Drill Stem Products
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1-800-999-1601 TOLL FREE IN THE U.S.A. AND CANADA
http://www.hydril.com
Headquarters Hydril Company P.O. Box 60458 ▼ Houston, TX 77205-0458 3300 N. Sam Houston Parkway East ▼ Houston, TX 77032-3411 Telephone: (281) 449-2000 ▼ Fax: (281) 985-3353
Drill Stem Valves KELLYGUARD™ DRILL STEM VALVES • CHECKGUARD® VALVES CATALOG DSV 2003 (REPLACES CATALOG PC 9701A)
For a Hydril Sales, Service or Manufacturing location nearest you, please check our website at www.hydril.com/locations
R 2M GRAPH 10/03
E
D
E
F
I
N
I
N
G
R
E
L
I
A
B
I
L
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KELLYGUARD™ VALVES
OF
CONTENTS
KELLYGUARD VALVES Standard Model and NACE Trim ................................2 Operational Advantages and ....................................4 Durable Components Kellyguard Valve Features ..........................................5
KELLYGUARD DRILL STEM VALVES Engineering Data........................................................6 Application Data ........................................................7 Parts List ....................................................................8 Detail View of Parts ....................................................9 Assembly Procedure ................................................10 Maintenance and Testing..........................................11
CHECKGUARD VALVES Applications and Operations ....................................12 Offshore Application ................................................13 Checkguard Valve Selection ....................................14 Features....................................................................16 Assembly Parts ........................................................17 Maintenance ............................................................18 Rubber Goods Storage for ......................................19 Checkguard and Kellyguard Valves
Standard Model and NACE Trim Kellyguard Valves
Rubber Goods Storage for Checkguard and Kellyguard Valves
Hydril’s Kellyguard is a drill stem valve. Drill stem valves facilitate well control and prevent mud spillage. Hydril produces Kellyguard valves to service both the traditional and top drive drilling applications. For traditional applications, they are attached above and below the kelly to close the bore to upward flow from the well, or downward flow while making a connection. For top drive applications, Hydril specializes in dual crank actuator driven valves.
The term rubber goods includes synthetic compounds, such as Nitrile Copolymers and Neoprene, as well as natural rubber parts. The ideal storage situation for rubber goods would be in vacuum-sealed containers maintained in a cool, dry, dark storage area. Atmosphere, light, and heat accelerate deterioration of rubber goods. The term aging means cumulative effects of all three attacking agents over a period of time. The rubber goods are also affected by stretching or bending from normal shape, extreme cold, or chemical reactions with solvents and petroleum products. The following recommendations will allow vendors and users of oil field equipment to maximize normally available storage facilities for rubber goods.
Upper Kellyguard valves are well suited for high flow rates, low to high-pressure sealing, and high tensile loads imposed upon upper kelly cocks. The upper Kellyguard valve has left hand-threaded connections, compatible with the swivel and upper kelly connections. The upper Kellyguard valve is used to close the bore if the drill string becomes stuck with the kelly in the rotary table.
1. Keep the rubber storage area as dark as possible – preferably indoors, not outdoors, and away from direct sunlight, skylights, windows, and direct artificial lighting. The ultraviolet content of the light spectrum accelerates cracking. 2. Select a cool location (ideally below 90°F) that is away from heaters, stoves and direct blasts of space heaters. Heat causes a gradual hardening of rubber goods. The process is greatly accelerated when ozone or oxygen is present. In extremely cold climates, some rubber goods become so brittle they will shatter when dropped or handled roughly. 3. Keep rubber goods away from electrical machinery (motors, switch gear, or any high voltage equipment producing corona). Avoid locations susceptible to drafts that will carry the atmosphere from electrical machinery to the rubber goods storage area. Exposure to the atmosphere allows ozone (O3), a very active form of oxygen, to react with and be especially detrimental to rubber goods. Two principal sources of ozone are (1) atmospheric ozone, and (2) ozone created by electrical discharges such as lighting, high voltage corona, and electrical machinery. Points of strain in rubber goods attacked by ozone are characterized by a hard skin, which eventually crazes into small cracks and may turn chalky or assume a bark-like appearance. 4. The practice of first-in, first-out inventory management is essential with rubber goods. 5. Store rubber goods in a relaxed position in their normal shape. Stretching or bending rubber goods will result in accelerated aging or cracking. For example, do not hang o-rings on pegs, glands, BOP testers, or operator parts. Periodically inspect to detect aging signs and treat the rubber goods that must be stored in a stretched attitude with age resistant compounds. 6. Rubber goods storage areas should be kept as dry as possible. Remove oil, grease or other foreign materials from the storage area to preclude spillage on rubber goods. Rubber goods, both
Lower Kellyguard valves are rated for the rugged applications of lower kelly cocks, including low and high-pressure sealing, high tensile strength, and high torsional strength. They have right hand threaded connections to mate with the lower kelly end and with drill pipe tool joints. The lower Kellyguard valve is positioned below the kelly to close the drill stem bore to hold a kick while preparing to circulate the kick out. It can also be used as a mud saver. Mud saver is the term applied to a lower Kellyguard valve when it is used to save drilling fluid during a connection. It saves mud costs and improves safety by reducing slippery mud on the rig floor. Drill pipe safety valves are lower Kellyguard valves with connections to mate with the drill pipe tool joint. Ratings are the same as lower Kellyguard valves. The valve assists stabbing operations due to its low operating torque for easy closing of the valve. When required, the open valve is stabbed onto the top tool joint, made-up, and manually closed. It is stored in the open position on the rig floor.
© 2003 Hydril Company LP All Rights Reserved.
2
Seals The Kellyguard valve is designed for 10,000 or 15,000 psi working pressure. It is tested at the factory to 15,000 or 22,500 psi. Hydril has selected high quality materials and dimensional fits to ensure greatest reliability. Each valve has three elastomeric sealing areas: between each seat and body, between crank and sleeve and between sleeve and body. The seat
7.
A) B) C)
D)
natural and synthetic, possess some degree of susceptibility to deterioration from various solvents, especially oil field liquid hydrocarbons, which cause swelling/shrinkage. If storage for extended periods is anticipated, sealed containers are recommended. Impervious surface coverings are recommended. Impervious surface coverings such as waxing will increase shelf life. Since the aging of a rubber product is dependent upon all of the above factors plus its size, specific composition, and function, no precise figure is available for "storage life." Generally, the greater the ratio of surface area to volume, the more susceptible a part is to being rendered useless by aging. For example, a relatively large part (by volume), such as a packing unit, might be expected to have a much longer useful shelf life than a large diameter O-ring. No general rule can be drawn regarding usability. A large, heavy part might suffer the same total amount of aging as a small, light piece and still be useful, whereas the light piece would be rendered useless. Thus, judgment becomes the rule and where there is doubt, replace the part. Prior to using rubber goods that have been stored for periods of time, these checks should be made: Is there "chalking" or "barking"? Has the part developed a "hard skin"? Do cracks appear? (Sometimes cracks will be obvious; stretch or bend the part in question so that any incipient cracks or very thin cracks will be revealed.) Will a suspect part pass a hardness test? (In the event that the hardness runs 15 points higher than the normal hardness of the part, it is considered non-usable.) Note: Hardness is affected by temperature, and readings should be taken with the rubber part at 70°F.
19
RUBBER GOODS STORAGE
TABLE
CHECKGUARD® VALVES
PACKER REPLACEMENT (1F) 1. Remove retainer ring (1I) and two retaining screws (1M) from valve body (1C). 2. Slide lower portion of valve from valve body. 3. Remove outer backup ring (1H), inner backup ring (1G), and packer (1F). 4. Check metal parts for damage. If in good condition, install new packer (1F) with square shouldered end down (toward ball). Do not oil or grease packer. 5. Install inner and outer backup rings (1H and 1G). 6. Slide lower portion of valve into valve body by hand. Install two retaining screws (1M) into valve body (1C). Ensure that screws are fully seated in groove on outside of ball seat (1B). 7. Install retainer ring (1I) over two retaining screws (1M) so that ring fits into slots on screws. VALVE REPLACEMENT (1N) 1. Remove set screw (1N) from ball cage (1A). 2. Unscrew and remove ball cage (1A) from ball seat (1B). 3. Remove ball (1L) and ball spring (1K). 4. Inspect ball seat to ensure good sealing surface. Repair if not smooth before replacing ball and spring. 5. Replace and tighten ball cage onto ball seat. 6. Install set screw (1N) into ball cage (1A). Ensure that screw is fully seated in groove on ball seat (1B).
7. Lubricate surfaces with light grease. 8. Install the O-ring (8) and back up rings (9) in the ring groove in the sub body. 9. Install the O-ring (7) into the landing sleeve (3) 10. Install the landing sleeve (3). 11. Install the upper split ring (4) into the sub body (2). 12. Install the retainer ring (5) and the retaining ring (6) into the upper split ring (4). CHECKGUARD VALVE STORAGE At the conclusion of each well or prior to placing the valve in storage for even a brief period, it is recommended that the Checkguard valve be disassembled, cleaned, inspected, lubricated thoroughly with non-petroleum base oil such as castor oil or silicon oil, and reassemble. Do not lubricate packer. Replacement of worn packer, seal rings and other parts can be made conveniently at this time.
seals are O-rings with backup rings on each side. The crank seal is a "T" with backup rings on each side. The sleeve seal is an O-ring with backup rings on each side.
use of chemical sulfide scavengers, and 3) use of a drilling fluid in which oil is the continuous phase." This configuration is designed for operating pressures of 10,000 or 15,000 psi.
The standard Kellyguard valve is intended for normal drilling environments and those described in NACE MR0175, section 11, which states: "The drilling environment is controlled by maintaining drilling fluid hydrostatic head and fluid density to minimize formation fluid in-flow and by the use of one or more of the following: 1) Maintenance of pH 10 or higher to neutralize H2S in the drilled formation, 2)
The NACE Trim Kellyguard valve is intended for normal and corrosive drilling environments and limited exposure to H2S. The limiting factors for H2S exposure includes H2S concentration, pH, time, and temperature. This configuration uses a standard Kellyguard valve body and NACE compliant internal parts and is rated for 10,000 psi operating pressure.
6 1D
5
1E
4
1J
3
7
SLIP DISASSEMBLY / ASSEMBLY (1E) 1. Unscrew and remove slip nut (1D) from valve body (1C). 2. Remove slip (1E) and slip spring (1J). 3. Clean and inspect disassembled parts. Replace any parts that are worn or damaged. 4. Lubricate surfaces with light grease. 5. Install slip spring (1J) and slip (1E). 6. Install slip nut (1D).
8
1M
1M 1I 1H 1G
1F
LANDING SUB DISASSEMBLY/ ASSEMBLY (2-9) 1. Remove the retaining ring (6) and the retainer ring (5) from the upper split ring (4). 2. Remove the upper split ring (4) from the sub body (2). 3. Remove the landing sleeve (3). 4. Remove the O-ring (7) from the landing sleeve. 5. Remove the O-ring (8) and back up rings (9) from the sub body. 6. Clean and inspect disassembled parts that are worn or damaged. 18
9
1C
2
1B Retrieving Tool
1L 1K 1N 1A
Cutaway View These are cutaway views of the valve in the closed position. Hydril offers Kellyguard: standard and NACE Trim models. In the Hydril NACE Trim, the internal parts only are NACE compatible. Contact your Hydril representative for more information regarding Hydril Kellyguard valves suitable for H2S sour gas service.
3
KELLYGUARD™ VALVES
Standard Model and NACE Trim Kellyguard Valves
Checkguard Valve Maintenance
KELLYGUARD™ VALVES
Hydril designed and developed the original one piece Kellyguard valve to fit the full range of kelly valve applications, and set the standard for the industry. The Kellyguard valve can serve as an upper kelly cock, top drive kelly cock, lower kelly cock, drill pipe safety valve, and mud saver. Minimum torque is needed to open the valve.
Pressure Balancing Allows Easy Opening. The Kellyguard valve is easily opened, even while sealing pressure. Operating torque is minimized by balancing pressures, above and below the ball. Pressure applied to the top of the ball equalizes well pressure acting on the ball from below. Because the ball is floating, the downward pressure acting on it reduces the friction between the ball and the seat. This reduction in friction decreases the torque required to rotate the ball, and thus allow opening of the valve.
Abrasion-Resistant Metal-toMetal Seals are Effective in Low or High Pressure. The sealing surfaces on the ball and seats are metal-to-metal providing reliable sealing from low to high pressure.
Designed for Demands of Modern Applications: Stainless Steel, Interchangeable Parts, Easy Maintenance, Long Service Life. Kellyguard valves require little maintenance. They have few operating parts, allowing easy repair. No lubrication is necessary except during assembly. All internal parts are stainless steel for corrosion resistance and long service life. They are precisely manufactured for interchangeability, allowing easy fitting of parts during assembly or repair. For traditional applications, Kellyguard valves are manufactured with enough length on each end to recut the connection in case of damaged threads or shoulders. The box and pin connections are cared for as any tool joint with periodic inspections.
Stainless steel ball and seats provide metal-to-metal sealing to ensure pressure integrity under a wide range of operating conditions.
10,000 or 15,000 psi Protection Kellyguard valves have a one piece compact body for easy handling and provide protection from 10,000 or 15,000 psi. For maximum safety, Hydril tests all bodies at 1 1/2 times rated working pressure.
Checkguard Valve Assembly Parts 1D
ITEM
DESCRIPTION
QTY
NO. 27
NO. 35
NO. 43
NO. 48
1A
CAGE, BALL
1
3132109
3132108
3132107
3131853
***1B
SEAT, BALL
1
3127085
3126408
3126450
3127110
1C
BODY
1
3126367
3125115
3126588
3127112
1D
NUT
1
3127090
3125116
3126586
3127113
1E
SLIP
1
3127036
3125117
3126587
3127052
***1F
PACKER
1
3126334
3125118
3126397
3126563
***1G
BACKUP RING, INNER
1
3127092
3126560
3126590
3127114
***1H
BACKUP RING, OUTER
1
3127093
3126561
3126589
3127115
1I
RETAINING RING
1
3126579-2
3126579-3
3126579-4
3126579-5
1J
SPRING, UPPER
1
3126660
3126516
3126518
3126520
***1K
SPRING, VALVE
1
3126515
3126517
3126519
3126521
***1L
BALL
1
1900754-2
1900754-3
1900754-4
1900754-5
1M
RETAINING SCREW
2
3125122-2
3125122-3
3125122-3
3125122-3
1N
SET SCREW
1
1900755-0603
1900755-0604
1900755-0604
1900755-0604
3133165
3133166
3133167
3133168
4
1J
1C
1M
REPAIR KIT
1M 1I 1H
1F
1G
1B 1L 1K
1N
1A
***Included in Repair Kit
6 5
LANDING SUB ASSEMBLY
4
ITEM
DESCRIPTION
QTY
2
SUB BODY
1
LANDING SLEEVE SPLIT RING
**3
5
Open and close positions are clearly indicated on all models. A stop mechanism ensures full 90 degrees rotation for full opening and closing. Proper positioning of the ball provides excellent performance and a long service life. Minimum torque is needed to open the valve because of the pressure balancing function.
1E
CHECK VALVE ASSEMBLY
4
Hydril manufacturing procedures meet the highest international standards of quality. Hydril's 9001 Certificate attests to its commitment to quality.
CHECKGUARD® VALVES
Operational Advantages and Durable Components Result in Low Cost of Ownership
NO. 27
NO. 35
NO. 43
NO. 48
1
3127095
3125119
3126392
3127117
1
3131099
3131101
3131103
3131105
3
RING RETAINER
1
3131150
3131152
3131154
3131156
**6
RING RETAINER-SPIRAL
1
1920003-231
1900149-148
1900149-159
1900149-161
*7
QUAD RING
1
1921173-230
1921173-234
1921173-240
1921173-244
*8
O RING
1
1900004-233
1900004-340
1900004-346
1900004-349
*9
BACKUP RING
2
1920069-233
1920069-340
1920069-346
1920069-349
**
SEAL KIT
3133149
3133148
3133147
3126357-SK
REPAIR KIT
3133152
3133151
3133150
3126357-RK
7 8
9
2
*Included in Seal Kit **Included in Repair Kit
RETRIEVAL TOOL (Not shown in this illustration) ITEM
DESCRIPTION
QTY
NO. 27
NO. 35
NO. 43
NO. 48
RETRIEVAL TOOL
1
1007225
1007425
1004625
1007725
17
CHECKGUARD® VALVES
Checkguard is a drop-in check valve for the drill string. The check valve remains top side until needed and is retrievable by wire line. It provides the driller a means to control the drill pipe pressure when required. The check valve prevents upward flow through the drill pipe, but allows fluid to be pumped downward to circulate the well. 15,000 psi Working Pressure Checkguard seals up to 15,000 psi working pressure; yet it is lightweight and easily handled. Maximized Flow Area Downward flow areas are maximized, allowing high flow capacity and long life. Installed As Needed The check valve remains on the drill floor until it is needed. Many downhole valves are part of the drill string and are constantly subject to abrasive wear. This
Kellyguard Valve Features
wear results in frequent replacement of valves and can prevent valve closure when needed. Checkguard is not exposed to premature deterioration. Only the landing sub is installed as the drill string is run. When control is needed, the check valve is pumped down the drill string where it latches automatically in the landing sub. Wire Line Retrieved Since the check valve can be wire line retrieved, it eliminates the need to trip the drill string for retrieval. Yet retrieval can also be accomplished after tripping out the drill string. Positive Closure Traveling down the drill string, the check valve lands on the landing sub sleeve and latches positively into place. The replaceable landing sleeve has recessed areas into which the check valve packer seals. Upward pressure is contained by the packer and ball.
KELLYGUARD™ VALVES
Checkguard Features
Well pressure creates primary seal. The primary seal is produced by forcing the ball against the upper seat. Sealing is efficient in high or low pressure. Under low pressure, the spring-loaded lower seat creates initial sealing. High pressure forces the ball against the upper seat.
Quality control measures are exacting. Here, the stainless steel ball is prepared for inspection. The precise shape of the ball is recorded using a Talyrond inspection device. Each and every ball is inspected for size, finish, and sphericity. Pressure balancing. With a closed valve containing well pressure from below, pressure applied from above equalizes the force on the ball. This pressure balancing significantly reduces operating torque necessary to open the valve, even at high pressure.
Kellyguard valves feature a replaceable operating crank sleeve. This sleeve protects the body from unnecessary wear to extend life and reduce costs. The crank operates inside the sleeve and is coated to reduce friction. The coating decreases torque and wear between the bearing surfaces. The sleeve also has a positive stop mechanism so the crank turns 90 degrees for full opening and closing. Operation is easy with the hex-operating wrench. Ball
T-shaped seal and backup rings provide a pressure seal and minimize rotational friction.
Downward pressure seal for mud saver. Pressure from above acts on the ball forcing it against the lower seat to provide a reliable seal. Landing sub in drill string. check valve is stored top side.
16
Check valve has landed in the sub. it is allowing circulation of drilling fluid.
The check valve has landed and latched in the sub and is containing well pressure. The ball closes against upward pressure.
O-ring seal and backup rings provide a seal between the body and sleeve.
Coupler Operating Crank Crank Dog
Sleeve
The retrieving tool is unlatching and lifting the check valve.
Open Position
Closed Position
5
KELLYGUARD™ DRILL STEM VALVES
Valve Size inches
6
ID inches
Weight
Hex Wrench
lbs.
inches
Connection
OD
Length
inches
inches
Checkguard Valve Selection
10,000 psi
10,000 psi NACE Trim
15,000 psi
Part Number
Part Number
Part Number
3
1 3/4
53
1/2
NC31 (2 7/8 IF)
4.25
16.50
3132183-1
3132185-1
3132184-1
3
1 3/4
69
1/2
NC38 (3 1/2 IF)
4.25
16.06
3132183-2
3132185-2
3132184-2
3
1 3/4
59
1/2
3 1/2 EUE 8R
4.25
15.50
3132183-3
3132185-3
3132184-3
3
1 3/4
59
1/2
2 7/8 EUE 8R
4.25
16.60
3132183-4
3132185-4
3132184-4
3
1 3/4
69
1/2
WT38
4.75
16.50
3132183-5
3132185-5
3132184-5
3
1 3/4
1/2
NC38 (3 1/2 IF)
4.75
25.00
3132183-6
3132185-6
3132184-6
3
1 3/4
3 1/2
2 1/4
80
1/2
XT39
5.00
15.51
5/8
NC38 (3 1/2 IF)
5.38
18.06
15,000 psi NACE TRIM CHECKGUARD ASSEMBLY (VALVE, SUB & TOOL) CHK L-SUB END ASSEMBLY NO. CONNECTION PART NO.
O.D. inches
BORE inches
WT lbs.
#27
1 11/16
5/8
5
#35
3132174-1
LANDING SUB
RETRIEVAL TOOL
PART NO.
O.D. inches
BORE inches
LENGTH inches
WT lbs.
PART NO.
WT
PART NO.
3126348
4 1/8
1 5/8
36
105
3126354-1
8
1007225
14
1007425
21
1004625
28
1007725
NC 31 (2 7/8 IF)
3126321-01
NC 38 (3 1/2 IF)
3126321-02
4 3/4
3126354-2
WT 38
3126321-03
5 1/8
3126354-3
XT 39
3126321-04
5
3126354-4
NC 38 (3 1/2 IF)
3126322-01
2 3/16
7/8
13
3126349
4 3/4
2 1/8
36
120
3126355-1
4 1/2 FH
3126322-02
6
3126355-2
NC 46 (IF)
3126322-03
6 1/4
3126355-3
NC 50 (4 1/2 IF)
3126322-04
6 3/8
3126355-4
3132173-1
4 1/2 RRH
3126322-05
5 3/4
3126355-5
4 1/2 RRHBXB
3126322-06
5 3/4
3126355-6
3 1/2 EUE
3126322-07
5
3126355-10
3132184-7 3132172-1
CHECK VALVE
3 1/2
2 1/4
115
5/8
4 1/2 FH
6.13
18.06
3132172-2
3132174-2
3132173-2
3 1/2
2 1/4
135
5/8
NC50 (4 1/2 IF)
6.38
17.56
3132172-3
3132174-3
3132173-3
3 1/2
2 1/4
120
5/8
NC46 (4 IF)
6.13
17.56
3132172-4
3132174-4
3132173-4
3 1/2
2 1/4
115
5/8
4 1/2 REG LH
6.13
17.82
3132172-5
3132174-5
3 1/2
2 1/4
80
5/8
NC40 (4" FH)
5.38
17.56
3132172-6
3132174-6
3 1/2
2 1/4
5/8
NC38 SHORT
5.38
15.50
3132172-9
3132174-11
4 1/2 NVAM
3126322-09
5
3126355-12
WT40
3126322-15
5 1/2
3126355-15
3132173-5
WT40 box x XT39 pin
3126322-16
5 3/8
3126355-16
3132173-6
WT40 box x HT38 pin
3126322-17
5 1/4
3126357-17
#43
NC 50 (4 1/2 IF)
3126323-01
NC 50 (4 1/2 IF)
3126323-02
2 11/16
1 3/8
18
3126350
6 1/8 6 1/4
2 5/8
36
230
3126356-1 3126356-2
NC 50 (4 1/2 IF)
3126323-03
6 3/8
3126356-3
3 1/2
2 1/4
5/8
WT 40
5.38
18.06
3132173-14
3 1/2
2 1/4
5/8
DS50
6.38
17.56
3132173-11
NC 50 (4 1/2 IF)
3126323-04
6 1/2
3126356-4
NC 46 (4 IF)
3126323-05
6 1/8
3126356-5
NC 46 (4 IF)
3126323-06
6 1/4
3126356-6
NC 46 (4 IF)
3126323-07
6 3/8
3126356-7
NC 46 (4 IF)
3126323-08
6 1/2
3126356-8
5 1/2 FH
3126323-10
7
3126356-10
4 1/4
2 13/16
130
7/8
NC46 (4 IF)
6.63
20.06
3132166-1
3132168-1
3132163-1
4 1/4
2 13/16
134
7/8
NC50 (4 1/2 IF)
6.63
20.06
3132166-2
3132168-2
3132163-2
4 1/4
2 13/16
228
7/8
5 1/2 IF
7.75
19.56
3132166-3
3132168-3
3132163-3
4 1/4
2 13/16
215
7/8
6 5/8 REG LH
7.75
19.56
3132166-4
3132168-4
3132163-4
4 1/4
2 13/16
117
7/8
NC50 SHORT
6.63
15.75
3132166-5
3132168-5
3132163-5
4 1/4
2 13/16
7/8
NC50 LONG
6.63
33.06
3132166-6
3132168-6
3132163-6
4 1/4
2 13/16
7/8
HT55 (400)
7.00
20.06
3133038
5 1/4
3 1/16
180
7/8
NC50 RH
7.38
20.06
3132169-1
3132171-1
3132170-1
5 1/4
3 1/16
192
7/8
5 1/2 FH
7.38
19.56
3132169-2
3132171-2
3132170-2
5 1/4
3 1/16
188
7/8
NC56
7.38
19.56
3132169-3
3132171-3
3132170-3
NC 50 (4 1/2 IF) #48
NC 50 (4 1/2 IF)
3126323-19 3126324-01
6 5/8 3
1 11/16
23
3126351
6 3/8
3126356-19 2 15/16
36
220
3126357-1
5 1/2 FH
3126324-02
7
3126357-2
6 5/8 RRH
3126324-03
7 3/4
3126357-3
6 5/8 RRH BXB
3126324-04
7 3/4
3126357-4
6 5/8 FH
3126324-05
8
3126357-5
6 5/8 RRH
3126324-06
8
3126357-6
NC 50 (4 1/2 IF)
3126324-08
6 5/8
3126357-8
6 5/8 FH
3126324-11
8 1/4
3126357-11
5 1/4
3 1/16
218
7/8
5 1/2 IF
7.75
19.56
3132169-4
3132171-4
3132170-4
5 1/4
3 1/16
218
7/8
6 5/8 REG LH
7.75
19.56
3132169-5
3132171-5
3132170-5
6 5/8 FH
3126324-12
8 1/2
3126357-12
5 1/4
3 1/16
7/8
6 5/8 REG RH
7.88
19.56
3132169-6
3132171-6
3132170-6
WT 56
3126324-14
7 3/4
3126357-14
5 1/4
3 1/16
140
7/8
6 5/8 REG RH SHORT
7.38
15.81
3132169-7
3132171-7
3132170-7
XT57
3126324-16
8
3126357-16
WT50 box X HT55 pin
3126324-19
7 1/8
3126357-19
5 1/4
3 1/16
205
7/8
6 5/8 FH
8.00
19.56
3132169-8
XT57
3126324-20
7 3/8
3126357-20
XT57 box X HT55 pin
3126324-21
7
3126357-21
5 1/4
3 1/16
5 1/4 5 1/4
270
7/8
7 5/8 REG RH
8.63
16.56
3132169-9
3132170-10
3 1/16
7/8
5 1/2 FH DSTJ pin X WT50 box
7.38
19.56
3132170-14
To Select correct Checkguard valve determine:
3 1/16
7/8
XT57
7.38
16.25
3132170-15
1. Smallest bore in drill string through which the check valve must pass. 2. Landing sub connection size and type. 3. Outside diameter of mating tool joints.
15
CHECKGUARD® VALVES
Kellyguard Sizes Engineering Data
CHECKGUARD® VALVES
Kellyguard Application Data MAKE-UP TORQUE FOR KELLYGUARD CONNECTION
Landing Sub After the correct size check valve is determined, choose a matching landing sub. Select a landing sub with threaded connections and outside diameter compatible with the mating tool joints of the drill string.
Retrieving Tool Fitted with a 5/8 API sucker rod connection (15/16-10 UNS) for connection to wireline. Check Valve Use the largest size check valve that can pass through the drill string to the landing sub to provide the largest flow area for circulation. Determine the smallest inside diameter through which the check valve must pass. Verify kelly, lower kelly valve, tool joints, and sometimes drill collars. The check valve OD must be at least 1/16 inch smaller than this inside diameter. Once smallest bore is determined, read across table for correct valve size.
CONNECTION
3
NC 31 (2 7/8 API IF)
5,900
8,700
NC 38 (3 1/2 API IF)
9,100
17,000
4 1/4
5 1/4
NC 38 (3 1/2 API IF)
4-1/4" – 10,000 PSI W.P. KELLYGUARD* VALVE
MAXIMUM MAKE-UP MAKE-UP TORQUE TORQUE (FT.-LBS)* (FT.-LBS)**
VALVE SIZE (IN.)
3 1/2
KELLYGUARD™ DRILL STEM VALVES
Checkguard Valve Selection
9,100
13,200
NC 46 (4 API IF)
17,000
28,900
4 1/2 FH
17,400
26,200
NC 50 (4 1/2 API IF)
18,900
39,300
4 1/2 API REG LH
20,300
22,700
NC 46 (4 API IF)
17,000
26,900
NC 50 (4 1/2 API IF)
18,900
34,100
6 5/8 API REG LH
41,700
56,700
NC 50 (4 1/2 API IF)
18,900
32,700
5 1/2 FH
28,000
47,800
6 5/8 API REG LH
41,700
54,000
**The Torque values listed are upper limits not to be exceeded. The correct make-up torque for a specific Kellyguard/Drill pipe connection will be the make-up torque recommended in API Spec RP 7G for the Drill Pipe/Tool Joint combination or the value listed above, which ever is lower.
The graph represents torque as a function of pressure. The line identified as (A) depicts torque required to open the valve with 0 pressure above the ball. Although this is infrequently done, it is of interest when compared to other manufacturer’s valves. Line (B) depicts the balance condition, i.e. pressure above and below ball are approximately equal. Note the reduction in torque requirement. *Graphs for other size and Kellyguard valves are similar.
INTERCHANGEABILITY OF ROTARY SHOULDER CONNECTIONS API CONNECTION
NC26
NC31
NC38
INTERNAL FLUSH
2 3/8
2 7/8
3 1/2
FULL HOLE
NC46
NC50
4
4 1/2
4 1/2
5
4
4 1/2
4
EXTRA HOLE
3 1/2
WIDE OPEN SLIM HOLE
NC40
3 1/2 2 7/8
3 1/2
4
4 1/2
Most Hydril Kellyguard end connections can be re-cut. Contact your Hydril representative for more information.
Hex Wrench Size, across flats
14
7
KELLYGUARD™ DRILL STEM VALVES
Checkguard Valve Offshore Application
Valve Item No. Qty. Size
Part Name
10M
10M NACE
15M
1 2 3 4 5 6 7 8 9 10 11 12
1* 1* 1* 1 1 1 1 1 1 1* 1* 1*
Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit
3132111 1007483 3132085 3131113 3131096 3131059 3131098 3131149 1920003-231 1007482 1004295-5 3131175 3132370
3132155 3132231 3132159 3131118 3131169 3131060 3131099 3131150 1920003-231 1007178 1007685-3 3131176 3132179
3132111 1007483 3132085 3131113 3131096 3131059 3131098 3131149 1920003-231 1007482 1004295-5 3131175 3132370
1 2 3 4 5 6 7 8 9 10 11 12
1* 1* 1* 1 1 1 1 1 1 1* 1* 1*
Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit
3132113 1004583 3132088 3131111 3131094 3131061 3131100 3131151 1920003-287 1006889 1004295-3 3131173 3132371
3132156 3132232 3132160 3131117 3131095 3131062 3131101 3131152 1920003-287 1007278 1007685-2 3131172 3132180
3132113 1004583 3132088 3131111 3131094 3131061 3131100 3131151 1920003-287 1006889 1004295-3 3131173 3132371
1 2 3 4 5 6 7 8 9 10 11 12
1* 1* 1* 1 1 1 1 1 1 1* 1* 1*
Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit
3132115 1001893 3132091 3131090 3131136 3131063 3131102 3131153 1920003-362 1004485 1004295-2 3131170 3132372
3132157 3132233 3132161 3131115 3131091 3131064 3131103 3131154 1900149-159 1007678 1007685-1 3131171 3132181
3132115 1001893 3132091 3131090 3131136 3131063 3131102 3131153 1920003-362 1004485 1004295-2 3131170 3132372
1 2 3 4 5 6 7 8 9 10 11 12
1* 1* 1* 1 1 1 1 1 1 1* 1* 1*
Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit
3132118 3109423 3132094 3131090 3131136 3131065 3131104 3131155 1920003-387 1004486 1004295-4 3131170 3132373
3132158 3132234 3132162 3131115 3131091 3131066 3131105 3131156 1900149-161 1007778 1007685-4 3131171 3132182
3132118 3109423 3132094 3131090 3131136 3131065 3131104 3131155 1920003-387 1004486 1004295-4 3131170 3132373
3
3 1/2
*
4 1/4
5 1/4
CHECKGUARD® VALVES
Kellyguard Parts List
Offshore applications A must for every shear ram application on floating and surface drilling
Drill pipe has been sheared after Checkguard valve has been landed in sub.
Shear / blind ram
Tool joint hangs on pipe ram
Checkguard valve in place
The Checkguard valve should be available to close off the drill string bore before shearing the drill pipe in subsea or surface drilling where shear / blind rams are applied. The check valve is pumped down to the landing sub prior to shearing the drill pipe. Later, reestablishment of well control will be simplified as the blind rams and annular BOP can be opened without experiencing flow up through the drill pipe.
* Included in Repair Kit 8
13
CHECKGUARD® VALVES
The Checkguard drop-in check valve is used in the drill string. The check valve remains top side until needed and is retrievable by wire line. It prevents upward flow through the drill pipe, but allows fluid to be pumped downward to circulate the well. The check valve provides the driller with a means to control the drill pipe pressures when required. Installing a Checkguard valve improves well control significantly. It serves as a check valve to prevent upward flow through the drill string while permitting downward mud pumping or flow from injectors. Latching the check valve into the landing sub contains the pressure in the drill pipe. While stripping drill pipe into the hole, checkguard valves control upward pressure in the drill pipe. Prior to shearing drill pipe, install the check valve to protect against the release of well pressure. Installation of the check valve simplifies well control, since formation pressures cannot communicate up the drill string. While tripping, Checkguard valves contain upward well bore pressure in the drill pipe, allowing the top connection to be open. Checkguard valves use a spring and ball design. Fluid can be pumped through the valve from the top. But when fluid tries to flow from the bottom to the top, the spring-loaded ball seals it.
Kellyguard Detail View of Parts
INSTALLATION AND RETRIEVAL Spiral wound retainer ring
Install the landing sub in the drill string while tripping into the hole. Position the landing sub in the lower end of the drill string. Install the check valve by dropping it into an open tool joint. Connect the kelly and pump the check valve into the landing sub. Use the drill pipe safety Kellyguard valve and lower Kellyguard valve if excessive back flow exists. Retrieve the check valve by installing a sinker bar above the retrieving tool and using a wire line. Use normal wire line procedures. Another way is to trip the drill string and remove the check valve from the landing sub with the retrieval tool.
12
Upper O-ring with backups
Lower split retainer ring
9 Upper seat 8 Included in item No.10
Ball 7 Operating Crank
Lower seat
3
6
For better operation, ensure the rubber packer is clean and pliable. Check for foreign substances such as paint, grease, and dirt on the packer surface. Check for cracking and embrittlement of packer. Never oil the rubber packer. Replace packer if condition requires. The check valve should be disassembled, cleaned, and lubricated once it is retrieved from the landing sub after downhole use. A suitable O-ring lubricant such as castrol oil may be used.The valve should be stored in a protected area, away from UV-rays and other harsh elements, while not in use. This protects working part.
Upper split retainer ring
Retainer ring
Lower seat spring
Crank Sleeve
4 2
Lower O-ring with backups
Body
1 Cutaway view of standard Hydril Kellyguard valve in open position. 11
5 12
Included in item No.10
Body
New Abrasion Resistant Materials for the Checkguard The ball seat has been improved with the addition of a Tungsten Carbide coated sealing surface. A new ceramic ball has been incorporated. These new components are added to increase the abrasion resistance of the valve to mud flow through it, thus increasing its life. A large rubber packer provides sealing when fluid attempts to flow around the valve. The tapered body engages the packer. The body is driven upward by pressure from below. As the drill string pressure increases, the pressure from below forces a tighter seal.
KELLYGUARD™ DRILL STEM VALVES
Checkguard Valve Applications and Operations
Included in item No.10
Exploded parts view of Hydril Kellyguard Valve
9
KELLYGUARD™ DRILL STEM VALVES
Kellyguard Maintenance and Testing MAINTENANCE
DISASSEMBLY 1. Rotate the ball to the open position. 2. Remove the spiral-wound retaining ring (figure 7-2) and the solid retaining ring (figure 7-3). 3. Compress the lower seat spring with the assembly tool (figure 7-4) and remove the upper split retainer ring.
4. Use the assembly tool to pull the upper seat (figure 7-5). 5. Compress the lower seat spring and remove the lower split retainer ring (figure 7-6). 6. Rotate the ball to the closed position and remove. 7. Press the crank assembly
(sleeve, crank, coupler and seals) into the bore and remove. 8. Remove the lower seat (figure 7-7). 9. Remove upper O-ring and backup rings.
VALVE SERIES
ASSEMBLY TOOL PART NO.
3 - 3 1/2
1006175
4 1/4 - 5 1/4
1005693
6 1/4
3123539
7 1/4
3120299
Figure 7-2
Figure 7-1 Assembly Tool
The Kellyguard valve requires very little maintenance. The box and pin connections should be cared for just as any other tool joint. Periodic inspection of connections is suggested. It should be greased during assembly. The seals in the valve should be replaced at a regular interval. The type of service the valve is given will affect the length of time between seal changes. If the valve is used with oilbase muds, the seals should be changed more often than with water-base muds. Six to nine months is a normal interval for seal changes under most conditions. Whenever the valve is disassembled, all elastomeric seals should be changed (see section 5 for assembly-disassembly instructions).
TESTING 1. Rotate ball to open position. 2. Install test plug and test cap in box and pin ends. 3 Measure torque to close and open valve. Torque shall be as shown in Table 1. 4. Mount valve in the vertical position with the ball and bleed valve open and fill valve cavity with soluble oil mixture. Once the system is filled, cycle the valve five (5) times to bleed the air. Overflow
Figure 7-3
Figure 7-4
Figure 7-5
Figure 7-6
5.
6. 7. 8.
9. 10.
the system for five (5) seconds and close bleed the valve. Pressurize valve cavity to rated working pressure. After five (5) minutes at the rated working pressure, observe crank seal for fluid leakage. No leakage is allowed. Drop pressure to zero. With bleed valve open and system filled, rotate the ball to the closed position. Pressurize the lower valve cavity to the rated working pressure and allow system to stabilize for five (5) minutes after system has stabilized. The maximum allowable pressure drop is 100 psi. Depressurize and drain valve. Torque shall be as shown in Table 1. When all tests are successfully completed, drain all fluid from the valve assembly and blow dry. Fill and drain all internal cavities with hydraulic oil. Install thread protectors on ends. Table 1 Size
Torque (Ft-Lbs)
3
5-25
3 1/2
10-35
4 1/4
15-40
5 1/4
14-45
Figure 7-7
ASSEMBLY Lubricate All Parts Prior to Assembly. 1. Insert the lower seat assembly (seat, seals, and spring) into the body and pull into place with the assembly tool. 2. Press the crank assembly into the hole from the bore and rotate to closed position. 3. Rotate the ball to a closed
10
position and insert. 4. Install the upper O-ring and backup rings. 5. Install the lower split retainer ring in the lowest groove. 6. Install the upper seat using the assembly tool. 7. Install the upper split retainer
ring and the solid retainer ring. Release the assembly tool. 8. Install the spiral-wound retaining ring. 9. Pressure test the valve. It is ready for service.
11
KELLYGUARD™ DRILL STEM VALVES
Kellyguard Assembly Procedure
KELLYGUARD™ DRILL STEM VALVES
Kellyguard Maintenance and Testing MAINTENANCE
DISASSEMBLY 1. Rotate the ball to the open position. 2. Remove the spiral-wound retaining ring (figure 7-2) and the solid retaining ring (figure 7-3). 3. Compress the lower seat spring with the assembly tool (figure 7-4) and remove the upper split retainer ring.
4. Use the assembly tool to pull the upper seat (figure 7-5). 5. Compress the lower seat spring and remove the lower split retainer ring (figure 7-6). 6. Rotate the ball to the closed position and remove. 7. Press the crank assembly
(sleeve, crank, coupler and seals) into the bore and remove. 8. Remove the lower seat (figure 7-7). 9. Remove upper O-ring and backup rings.
VALVE SERIES
ASSEMBLY TOOL PART NO.
3 - 3 1/2
1006175
4 1/4 - 5 1/4
1005693
6 1/4
3123539
7 1/4
3120299
Figure 7-2
Figure 7-1 Assembly Tool
The Kellyguard valve requires very little maintenance. The box and pin connections should be cared for just as any other tool joint. Periodic inspection of connections is suggested. It should be greased during assembly. The seals in the valve should be replaced at a regular interval. The type of service the valve is given will affect the length of time between seal changes. If the valve is used with oilbase muds, the seals should be changed more often than with water-base muds. Six to nine months is a normal interval for seal changes under most conditions. Whenever the valve is disassembled, all elastomeric seals should be changed (see section 5 for assembly-disassembly instructions).
TESTING 1. Rotate ball to open position. 2. Install test plug and test cap in box and pin ends. 3 Measure torque to close and open valve. Torque shall be as shown in Table 1. 4. Mount valve in the vertical position with the ball and bleed valve open and fill valve cavity with soluble oil mixture. Once the system is filled, cycle the valve five (5) times to bleed the air. Overflow
Figure 7-3
Figure 7-4
Figure 7-5
Figure 7-6
5.
6. 7. 8.
9. 10.
the system for five (5) seconds and close bleed the valve. Pressurize valve cavity to rated working pressure. After five (5) minutes at the rated working pressure, observe crank seal for fluid leakage. No leakage is allowed. Drop pressure to zero. With bleed valve open and system filled, rotate the ball to the closed position. Pressurize the lower valve cavity to the rated working pressure and allow system to stabilize for five (5) minutes after system has stabilized. The maximum allowable pressure drop is 100 psi. Depressurize and drain valve. Torque shall be as shown in Table 1. When all tests are successfully completed, drain all fluid from the valve assembly and blow dry. Fill and drain all internal cavities with hydraulic oil. Install thread protectors on ends. Table 1 Size
Torque (Ft-Lbs)
3
5-25
3 1/2
10-35
4 1/4
15-40
5 1/4
14-45
Figure 7-7
ASSEMBLY Lubricate All Parts Prior to Assembly. 1. Insert the lower seat assembly (seat, seals, and spring) into the body and pull into place with the assembly tool. 2. Press the crank assembly into the hole from the bore and rotate to closed position. 3. Rotate the ball to a closed
10
position and insert. 4. Install the upper O-ring and backup rings. 5. Install the lower split retainer ring in the lowest groove. 6. Install the upper seat using the assembly tool. 7. Install the upper split retainer
ring and the solid retainer ring. Release the assembly tool. 8. Install the spiral-wound retaining ring. 9. Pressure test the valve. It is ready for service.
11
KELLYGUARD™ DRILL STEM VALVES
Kellyguard Assembly Procedure
CHECKGUARD® VALVES
The Checkguard drop-in check valve is used in the drill string. The check valve remains top side until needed and is retrievable by wire line. It prevents upward flow through the drill pipe, but allows fluid to be pumped downward to circulate the well. The check valve provides the driller with a means to control the drill pipe pressures when required. Installing a Checkguard valve improves well control significantly. It serves as a check valve to prevent upward flow through the drill string while permitting downward mud pumping or flow from injectors. Latching the check valve into the landing sub contains the pressure in the drill pipe. While stripping drill pipe into the hole, checkguard valves control upward pressure in the drill pipe. Prior to shearing drill pipe, install the check valve to protect against the release of well pressure. Installation of the check valve simplifies well control, since formation pressures cannot communicate up the drill string. While tripping, Checkguard valves contain upward well bore pressure in the drill pipe, allowing the top connection to be open. Checkguard valves use a spring and ball design. Fluid can be pumped through the valve from the top. But when fluid tries to flow from the bottom to the top, the spring-loaded ball seals it.
Kellyguard Detail View of Parts
INSTALLATION AND RETRIEVAL Spiral wound retainer ring
Install the landing sub in the drill string while tripping into the hole. Position the landing sub in the lower end of the drill string. Install the check valve by dropping it into an open tool joint. Connect the kelly and pump the check valve into the landing sub. Use the drill pipe safety Kellyguard valve and lower Kellyguard valve if excessive back flow exists. Retrieve the check valve by installing a sinker bar above the retrieving tool and using a wire line. Use normal wire line procedures. Another way is to trip the drill string and remove the check valve from the landing sub with the retrieval tool.
12
Upper O-ring with backups
Lower split retainer ring
9 Upper seat 8 Included in item No.10
Ball 7 Operating Crank
Lower seat
3
6
For better operation, ensure the rubber packer is clean and pliable. Check for foreign substances such as paint, grease, and dirt on the packer surface. Check for cracking and embrittlement of packer. Never oil the rubber packer. Replace packer if condition requires. The check valve should be disassembled, cleaned, and lubricated once it is retrieved from the landing sub after downhole use. A suitable O-ring lubricant such as castrol oil may be used.The valve should be stored in a protected area, away from UV-rays and other harsh elements, while not in use. This protects working part.
Upper split retainer ring
Retainer ring
Lower seat spring
Crank Sleeve
4 2
Lower O-ring with backups
Body
1 Cutaway view of standard Hydril Kellyguard valve in open position. 11
5 12
Included in item No.10
Body
New Abrasion Resistant Materials for the Checkguard The ball seat has been improved with the addition of a Tungsten Carbide coated sealing surface. A new ceramic ball has been incorporated. These new components are added to increase the abrasion resistance of the valve to mud flow through it, thus increasing its life. A large rubber packer provides sealing when fluid attempts to flow around the valve. The tapered body engages the packer. The body is driven upward by pressure from below. As the drill string pressure increases, the pressure from below forces a tighter seal.
KELLYGUARD™ DRILL STEM VALVES
Checkguard Valve Applications and Operations
Included in item No.10
Exploded parts view of Hydril Kellyguard Valve
9
KELLYGUARD™ DRILL STEM VALVES
Checkguard Valve Offshore Application
Valve Item No. Qty. Size
Part Name
10M
10M NACE
15M
1 2 3 4 5 6 7 8 9 10 11 12
1* 1* 1* 1 1 1 1 1 1 1* 1* 1*
Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit
3132111 1007483 3132085 3131113 3131096 3131059 3131098 3131149 1920003-231 1007482 1004295-5 3131175 3132370
3132155 3132231 3132159 3131118 3131169 3131060 3131099 3131150 1920003-231 1007178 1007685-3 3131176 3132179
3132111 1007483 3132085 3131113 3131096 3131059 3131098 3131149 1920003-231 1007482 1004295-5 3131175 3132370
1 2 3 4 5 6 7 8 9 10 11 12
1* 1* 1* 1 1 1 1 1 1 1* 1* 1*
Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit
3132113 1004583 3132088 3131111 3131094 3131061 3131100 3131151 1920003-287 1006889 1004295-3 3131173 3132371
3132156 3132232 3132160 3131117 3131095 3131062 3131101 3131152 1920003-287 1007278 1007685-2 3131172 3132180
3132113 1004583 3132088 3131111 3131094 3131061 3131100 3131151 1920003-287 1006889 1004295-3 3131173 3132371
1 2 3 4 5 6 7 8 9 10 11 12
1* 1* 1* 1 1 1 1 1 1 1* 1* 1*
Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit
3132115 1001893 3132091 3131090 3131136 3131063 3131102 3131153 1920003-362 1004485 1004295-2 3131170 3132372
3132157 3132233 3132161 3131115 3131091 3131064 3131103 3131154 1900149-159 1007678 1007685-1 3131171 3132181
3132115 1001893 3132091 3131090 3131136 3131063 3131102 3131153 1920003-362 1004485 1004295-2 3131170 3132372
1 2 3 4 5 6 7 8 9 10 11 12
1* 1* 1* 1 1 1 1 1 1 1* 1* 1*
Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit
3132118 3109423 3132094 3131090 3131136 3131065 3131104 3131155 1920003-387 1004486 1004295-4 3131170 3132373
3132158 3132234 3132162 3131115 3131091 3131066 3131105 3131156 1900149-161 1007778 1007685-4 3131171 3132182
3132118 3109423 3132094 3131090 3131136 3131065 3131104 3131155 1920003-387 1004486 1004295-4 3131170 3132373
3
3 1/2
*
4 1/4
5 1/4
CHECKGUARD® VALVES
Kellyguard Parts List
Offshore applications A must for every shear ram application on floating and surface drilling
Drill pipe has been sheared after Checkguard valve has been landed in sub.
Shear / blind ram
Tool joint hangs on pipe ram
Checkguard valve in place
The Checkguard valve should be available to close off the drill string bore before shearing the drill pipe in subsea or surface drilling where shear / blind rams are applied. The check valve is pumped down to the landing sub prior to shearing the drill pipe. Later, reestablishment of well control will be simplified as the blind rams and annular BOP can be opened without experiencing flow up through the drill pipe.
* Included in Repair Kit 8
13
CHECKGUARD® VALVES
Kellyguard Application Data MAKE-UP TORQUE FOR KELLYGUARD CONNECTION
Landing Sub After the correct size check valve is determined, choose a matching landing sub. Select a landing sub with threaded connections and outside diameter compatible with the mating tool joints of the drill string.
Retrieving Tool Fitted with a 5/8 API sucker rod connection (15/16-10 UNS) for connection to wireline. Check Valve Use the largest size check valve that can pass through the drill string to the landing sub to provide the largest flow area for circulation. Determine the smallest inside diameter through which the check valve must pass. Verify kelly, lower kelly valve, tool joints, and sometimes drill collars. The check valve OD must be at least 1/16 inch smaller than this inside diameter. Once smallest bore is determined, read across table for correct valve size.
CONNECTION
3
NC 31 (2 7/8 API IF)
5,900
8,700
NC 38 (3 1/2 API IF)
9,100
17,000
4 1/4
5 1/4
NC 38 (3 1/2 API IF)
4-1/4" – 10,000 PSI W.P. KELLYGUARD* VALVE
MAXIMUM MAKE-UP MAKE-UP TORQUE TORQUE (FT.-LBS)* (FT.-LBS)**
VALVE SIZE (IN.)
3 1/2
KELLYGUARD™ DRILL STEM VALVES
Checkguard Valve Selection
9,100
13,200
NC 46 (4 API IF)
17,000
28,900
4 1/2 FH
17,400
26,200
NC 50 (4 1/2 API IF)
18,900
39,300
4 1/2 API REG LH
20,300
22,700
NC 46 (4 API IF)
17,000
26,900
NC 50 (4 1/2 API IF)
18,900
34,100
6 5/8 API REG LH
41,700
56,700
NC 50 (4 1/2 API IF)
18,900
32,700
5 1/2 FH
28,000
47,800
6 5/8 API REG LH
41,700
54,000
**The Torque values listed are upper limits not to be exceeded. The correct make-up torque for a specific Kellyguard/Drill pipe connection will be the make-up torque recommended in API Spec RP 7G for the Drill Pipe/Tool Joint combination or the value listed above, which ever is lower.
The graph represents torque as a function of pressure. The line identified as (A) depicts torque required to open the valve with 0 pressure above the ball. Although this is infrequently done, it is of interest when compared to other manufacturer’s valves. Line (B) depicts the balance condition, i.e. pressure above and below ball are approximately equal. Note the reduction in torque requirement. *Graphs for other size and Kellyguard valves are similar.
INTERCHANGEABILITY OF ROTARY SHOULDER CONNECTIONS API CONNECTION
NC26
NC31
NC38
INTERNAL FLUSH
2 3/8
2 7/8
3 1/2
FULL HOLE
NC46
NC50
4
4 1/2
4 1/2
5
4
4 1/2
4
EXTRA HOLE
3 1/2
WIDE OPEN SLIM HOLE
NC40
3 1/2 2 7/8
3 1/2
4
4 1/2
Most Hydril Kellyguard end connections can be re-cut. Contact your Hydril representative for more information.
Hex Wrench Size, across flats
14
7
KELLYGUARD™ DRILL STEM VALVES
Valve Size inches
6
ID inches
Weight
Hex Wrench
lbs.
inches
Connection
OD
Length
inches
inches
Checkguard Valve Selection
10,000 psi
10,000 psi NACE Trim
15,000 psi
Part Number
Part Number
Part Number
3
1 3/4
53
1/2
NC31 (2 7/8 IF)
4.25
16.50
3132183-1
3132185-1
3132184-1
3
1 3/4
69
1/2
NC38 (3 1/2 IF)
4.25
16.06
3132183-2
3132185-2
3132184-2
3
1 3/4
59
1/2
3 1/2 EUE 8R
4.25
15.50
3132183-3
3132185-3
3132184-3
3
1 3/4
59
1/2
2 7/8 EUE 8R
4.25
16.60
3132183-4
3132185-4
3132184-4
3
1 3/4
69
1/2
WT38
4.75
16.50
3132183-5
3132185-5
3132184-5
3
1 3/4
1/2
NC38 (3 1/2 IF)
4.75
25.00
3132183-6
3132185-6
3132184-6
3
1 3/4
3 1/2
2 1/4
80
1/2
XT39
5.00
15.51
5/8
NC38 (3 1/2 IF)
5.38
18.06
15,000 psi NACE TRIM CHECKGUARD ASSEMBLY (VALVE, SUB & TOOL) CHK L-SUB END ASSEMBLY NO. CONNECTION PART NO.
O.D. inches
BORE inches
WT lbs.
#27
1 11/16
5/8
5
#35
3132174-1
LANDING SUB
RETRIEVAL TOOL
PART NO.
O.D. inches
BORE inches
LENGTH inches
WT lbs.
PART NO.
WT
PART NO.
3126348
4 1/8
1 5/8
36
105
3126354-1
8
1007225
14
1007425
21
1004625
28
1007725
NC 31 (2 7/8 IF)
3126321-01
NC 38 (3 1/2 IF)
3126321-02
4 3/4
3126354-2
WT 38
3126321-03
5 1/8
3126354-3
XT 39
3126321-04
5
3126354-4
NC 38 (3 1/2 IF)
3126322-01
2 3/16
7/8
13
3126349
4 3/4
2 1/8
36
120
3126355-1
4 1/2 FH
3126322-02
6
3126355-2
NC 46 (IF)
3126322-03
6 1/4
3126355-3
NC 50 (4 1/2 IF)
3126322-04
6 3/8
3126355-4
3132173-1
4 1/2 RRH
3126322-05
5 3/4
3126355-5
4 1/2 RRHBXB
3126322-06
5 3/4
3126355-6
3 1/2 EUE
3126322-07
5
3126355-10
3132184-7 3132172-1
CHECK VALVE
3 1/2
2 1/4
115
5/8
4 1/2 FH
6.13
18.06
3132172-2
3132174-2
3132173-2
3 1/2
2 1/4
135
5/8
NC50 (4 1/2 IF)
6.38
17.56
3132172-3
3132174-3
3132173-3
3 1/2
2 1/4
120
5/8
NC46 (4 IF)
6.13
17.56
3132172-4
3132174-4
3132173-4
3 1/2
2 1/4
115
5/8
4 1/2 REG LH
6.13
17.82
3132172-5
3132174-5
3 1/2
2 1/4
80
5/8
NC40 (4" FH)
5.38
17.56
3132172-6
3132174-6
3 1/2
2 1/4
5/8
NC38 SHORT
5.38
15.50
3132172-9
3132174-11
4 1/2 NVAM
3126322-09
5
3126355-12
WT40
3126322-15
5 1/2
3126355-15
3132173-5
WT40 box x XT39 pin
3126322-16
5 3/8
3126355-16
3132173-6
WT40 box x HT38 pin
3126322-17
5 1/4
3126357-17
#43
NC 50 (4 1/2 IF)
3126323-01
NC 50 (4 1/2 IF)
3126323-02
2 11/16
1 3/8
18
3126350
6 1/8 6 1/4
2 5/8
36
230
3126356-1 3126356-2
NC 50 (4 1/2 IF)
3126323-03
6 3/8
3126356-3
3 1/2
2 1/4
5/8
WT 40
5.38
18.06
3132173-14
3 1/2
2 1/4
5/8
DS50
6.38
17.56
3132173-11
NC 50 (4 1/2 IF)
3126323-04
6 1/2
3126356-4
NC 46 (4 IF)
3126323-05
6 1/8
3126356-5
NC 46 (4 IF)
3126323-06
6 1/4
3126356-6
NC 46 (4 IF)
3126323-07
6 3/8
3126356-7
NC 46 (4 IF)
3126323-08
6 1/2
3126356-8
5 1/2 FH
3126323-10
7
3126356-10
4 1/4
2 13/16
130
7/8
NC46 (4 IF)
6.63
20.06
3132166-1
3132168-1
3132163-1
4 1/4
2 13/16
134
7/8
NC50 (4 1/2 IF)
6.63
20.06
3132166-2
3132168-2
3132163-2
4 1/4
2 13/16
228
7/8
5 1/2 IF
7.75
19.56
3132166-3
3132168-3
3132163-3
4 1/4
2 13/16
215
7/8
6 5/8 REG LH
7.75
19.56
3132166-4
3132168-4
3132163-4
4 1/4
2 13/16
117
7/8
NC50 SHORT
6.63
15.75
3132166-5
3132168-5
3132163-5
4 1/4
2 13/16
7/8
NC50 LONG
6.63
33.06
3132166-6
3132168-6
3132163-6
4 1/4
2 13/16
7/8
HT55 (400)
7.00
20.06
3133038
5 1/4
3 1/16
180
7/8
NC50 RH
7.38
20.06
3132169-1
3132171-1
3132170-1
5 1/4
3 1/16
192
7/8
5 1/2 FH
7.38
19.56
3132169-2
3132171-2
3132170-2
5 1/4
3 1/16
188
7/8
NC56
7.38
19.56
3132169-3
3132171-3
3132170-3
NC 50 (4 1/2 IF) #48
NC 50 (4 1/2 IF)
3126323-19 3126324-01
6 5/8 3
1 11/16
23
3126351
6 3/8
3126356-19 2 15/16
36
220
3126357-1
5 1/2 FH
3126324-02
7
3126357-2
6 5/8 RRH
3126324-03
7 3/4
3126357-3
6 5/8 RRH BXB
3126324-04
7 3/4
3126357-4
6 5/8 FH
3126324-05
8
3126357-5
6 5/8 RRH
3126324-06
8
3126357-6
NC 50 (4 1/2 IF)
3126324-08
6 5/8
3126357-8
6 5/8 FH
3126324-11
8 1/4
3126357-11
5 1/4
3 1/16
218
7/8
5 1/2 IF
7.75
19.56
3132169-4
3132171-4
3132170-4
5 1/4
3 1/16
218
7/8
6 5/8 REG LH
7.75
19.56
3132169-5
3132171-5
3132170-5
6 5/8 FH
3126324-12
8 1/2
3126357-12
5 1/4
3 1/16
7/8
6 5/8 REG RH
7.88
19.56
3132169-6
3132171-6
3132170-6
WT 56
3126324-14
7 3/4
3126357-14
5 1/4
3 1/16
140
7/8
6 5/8 REG RH SHORT
7.38
15.81
3132169-7
3132171-7
3132170-7
XT57
3126324-16
8
3126357-16
WT50 box X HT55 pin
3126324-19
7 1/8
3126357-19
5 1/4
3 1/16
205
7/8
6 5/8 FH
8.00
19.56
3132169-8
XT57
3126324-20
7 3/8
3126357-20
XT57 box X HT55 pin
3126324-21
7
3126357-21
5 1/4
3 1/16
5 1/4 5 1/4
270
7/8
7 5/8 REG RH
8.63
16.56
3132169-9
3132170-10
3 1/16
7/8
5 1/2 FH DSTJ pin X WT50 box
7.38
19.56
3132170-14
To Select correct Checkguard valve determine:
3 1/16
7/8
XT57
7.38
16.25
3132170-15
1. Smallest bore in drill string through which the check valve must pass. 2. Landing sub connection size and type. 3. Outside diameter of mating tool joints.
15
CHECKGUARD® VALVES
Kellyguard Sizes Engineering Data
CHECKGUARD® VALVES
Checkguard is a drop-in check valve for the drill string. The check valve remains top side until needed and is retrievable by wire line. It provides the driller a means to control the drill pipe pressure when required. The check valve prevents upward flow through the drill pipe, but allows fluid to be pumped downward to circulate the well. 15,000 psi Working Pressure Checkguard seals up to 15,000 psi working pressure; yet it is lightweight and easily handled. Maximized Flow Area Downward flow areas are maximized, allowing high flow capacity and long life. Installed As Needed The check valve remains on the drill floor until it is needed. Many downhole valves are part of the drill string and are constantly subject to abrasive wear. This
Kellyguard Valve Features
wear results in frequent replacement of valves and can prevent valve closure when needed. Checkguard is not exposed to premature deterioration. Only the landing sub is installed as the drill string is run. When control is needed, the check valve is pumped down the drill string where it latches automatically in the landing sub. Wire Line Retrieved Since the check valve can be wire line retrieved, it eliminates the need to trip the drill string for retrieval. Yet retrieval can also be accomplished after tripping out the drill string. Positive Closure Traveling down the drill string, the check valve lands on the landing sub sleeve and latches positively into place. The replaceable landing sleeve has recessed areas into which the check valve packer seals. Upward pressure is contained by the packer and ball.
KELLYGUARD™ VALVES
Checkguard Features
Well pressure creates primary seal. The primary seal is produced by forcing the ball against the upper seat. Sealing is efficient in high or low pressure. Under low pressure, the spring-loaded lower seat creates initial sealing. High pressure forces the ball against the upper seat.
Quality control measures are exacting. Here, the stainless steel ball is prepared for inspection. The precise shape of the ball is recorded using a Talyrond inspection device. Each and every ball is inspected for size, finish, and sphericity. Pressure balancing. With a closed valve containing well pressure from below, pressure applied from above equalizes the force on the ball. This pressure balancing significantly reduces operating torque necessary to open the valve, even at high pressure.
Kellyguard valves feature a replaceable operating crank sleeve. This sleeve protects the body from unnecessary wear to extend life and reduce costs. The crank operates inside the sleeve and is coated to reduce friction. The coating decreases torque and wear between the bearing surfaces. The sleeve also has a positive stop mechanism so the crank turns 90 degrees for full opening and closing. Operation is easy with the hex-operating wrench. Ball
T-shaped seal and backup rings provide a pressure seal and minimize rotational friction.
Downward pressure seal for mud saver. Pressure from above acts on the ball forcing it against the lower seat to provide a reliable seal. Landing sub in drill string. check valve is stored top side.
16
Check valve has landed in the sub. it is allowing circulation of drilling fluid.
The check valve has landed and latched in the sub and is containing well pressure. The ball closes against upward pressure.
O-ring seal and backup rings provide a seal between the body and sleeve.
Coupler Operating Crank Crank Dog
Sleeve
The retrieving tool is unlatching and lifting the check valve.
Open Position
Closed Position
5
KELLYGUARD™ VALVES
Hydril designed and developed the original one piece Kellyguard valve to fit the full range of kelly valve applications, and set the standard for the industry. The Kellyguard valve can serve as an upper kelly cock, top drive kelly cock, lower kelly cock, drill pipe safety valve, and mud saver. Minimum torque is needed to open the valve.
Pressure Balancing Allows Easy Opening. The Kellyguard valve is easily opened, even while sealing pressure. Operating torque is minimized by balancing pressures, above and below the ball. Pressure applied to the top of the ball equalizes well pressure acting on the ball from below. Because the ball is floating, the downward pressure acting on it reduces the friction between the ball and the seat. This reduction in friction decreases the torque required to rotate the ball, and thus allow opening of the valve.
Abrasion-Resistant Metal-toMetal Seals are Effective in Low or High Pressure. The sealing surfaces on the ball and seats are metal-to-metal providing reliable sealing from low to high pressure.
Designed for Demands of Modern Applications: Stainless Steel, Interchangeable Parts, Easy Maintenance, Long Service Life. Kellyguard valves require little maintenance. They have few operating parts, allowing easy repair. No lubrication is necessary except during assembly. All internal parts are stainless steel for corrosion resistance and long service life. They are precisely manufactured for interchangeability, allowing easy fitting of parts during assembly or repair. For traditional applications, Kellyguard valves are manufactured with enough length on each end to recut the connection in case of damaged threads or shoulders. The box and pin connections are cared for as any tool joint with periodic inspections.
Stainless steel ball and seats provide metal-to-metal sealing to ensure pressure integrity under a wide range of operating conditions.
10,000 or 15,000 psi Protection Kellyguard valves have a one piece compact body for easy handling and provide protection from 10,000 or 15,000 psi. For maximum safety, Hydril tests all bodies at 1 1/2 times rated working pressure.
Checkguard Valve Assembly Parts 1D
ITEM
DESCRIPTION
QTY
NO. 27
NO. 35
NO. 43
NO. 48
1A
CAGE, BALL
1
3132109
3132108
3132107
3131853
***1B
SEAT, BALL
1
3127085
3126408
3126450
3127110
1C
BODY
1
3126367
3125115
3126588
3127112
1D
NUT
1
3127090
3125116
3126586
3127113
1E
SLIP
1
3127036
3125117
3126587
3127052
***1F
PACKER
1
3126334
3125118
3126397
3126563
***1G
BACKUP RING, INNER
1
3127092
3126560
3126590
3127114
***1H
BACKUP RING, OUTER
1
3127093
3126561
3126589
3127115
1I
RETAINING RING
1
3126579-2
3126579-3
3126579-4
3126579-5
1J
SPRING, UPPER
1
3126660
3126516
3126518
3126520
***1K
SPRING, VALVE
1
3126515
3126517
3126519
3126521
***1L
BALL
1
1900754-2
1900754-3
1900754-4
1900754-5
1M
RETAINING SCREW
2
3125122-2
3125122-3
3125122-3
3125122-3
1N
SET SCREW
1
1900755-0603
1900755-0604
1900755-0604
1900755-0604
3133165
3133166
3133167
3133168
4
1J
1C
1M
REPAIR KIT
1M 1I 1H
1F
1G
1B 1L 1K
1N
1A
***Included in Repair Kit
6 5
LANDING SUB ASSEMBLY
4
ITEM
DESCRIPTION
QTY
2
SUB BODY
1
LANDING SLEEVE SPLIT RING
**3
5
Open and close positions are clearly indicated on all models. A stop mechanism ensures full 90 degrees rotation for full opening and closing. Proper positioning of the ball provides excellent performance and a long service life. Minimum torque is needed to open the valve because of the pressure balancing function.
1E
CHECK VALVE ASSEMBLY
4
Hydril manufacturing procedures meet the highest international standards of quality. Hydril's 9001 Certificate attests to its commitment to quality.
CHECKGUARD® VALVES
Operational Advantages and Durable Components Result in Low Cost of Ownership
NO. 27
NO. 35
NO. 43
NO. 48
1
3127095
3125119
3126392
3127117
1
3131099
3131101
3131103
3131105
3
RING RETAINER
1
3131150
3131152
3131154
3131156
**6
RING RETAINER-SPIRAL
1
1920003-231
1900149-148
1900149-159
1900149-161
*7
QUAD RING
1
1921173-230
1921173-234
1921173-240
1921173-244
*8
O RING
1
1900004-233
1900004-340
1900004-346
1900004-349
*9
BACKUP RING
2
1920069-233
1920069-340
1920069-346
1920069-349
**
SEAL KIT
3133149
3133148
3133147
3126357-SK
REPAIR KIT
3133152
3133151
3133150
3126357-RK
7 8
9
2
*Included in Seal Kit **Included in Repair Kit
RETRIEVAL TOOL (Not shown in this illustration) ITEM
DESCRIPTION
QTY
NO. 27
NO. 35
NO. 43
NO. 48
RETRIEVAL TOOL
1
1007225
1007425
1004625
1007725
17
CHECKGUARD® VALVES
PACKER REPLACEMENT (1F) 1. Remove retainer ring (1I) and two retaining screws (1M) from valve body (1C). 2. Slide lower portion of valve from valve body. 3. Remove outer backup ring (1H), inner backup ring (1G), and packer (1F). 4. Check metal parts for damage. If in good condition, install new packer (1F) with square shouldered end down (toward ball). Do not oil or grease packer. 5. Install inner and outer backup rings (1H and 1G). 6. Slide lower portion of valve into valve body by hand. Install two retaining screws (1M) into valve body (1C). Ensure that screws are fully seated in groove on outside of ball seat (1B). 7. Install retainer ring (1I) over two retaining screws (1M) so that ring fits into slots on screws. VALVE REPLACEMENT (1N) 1. Remove set screw (1N) from ball cage (1A). 2. Unscrew and remove ball cage (1A) from ball seat (1B). 3. Remove ball (1L) and ball spring (1K). 4. Inspect ball seat to ensure good sealing surface. Repair if not smooth before replacing ball and spring. 5. Replace and tighten ball cage onto ball seat. 6. Install set screw (1N) into ball cage (1A). Ensure that screw is fully seated in groove on ball seat (1B).
7. Lubricate surfaces with light grease. 8. Install the O-ring (8) and back up rings (9) in the ring groove in the sub body. 9. Install the O-ring (7) into the landing sleeve (3) 10. Install the landing sleeve (3). 11. Install the upper split ring (4) into the sub body (2). 12. Install the retainer ring (5) and the retaining ring (6) into the upper split ring (4). CHECKGUARD VALVE STORAGE At the conclusion of each well or prior to placing the valve in storage for even a brief period, it is recommended that the Checkguard valve be disassembled, cleaned, inspected, lubricated thoroughly with non-petroleum base oil such as castor oil or silicon oil, and reassemble. Do not lubricate packer. Replacement of worn packer, seal rings and other parts can be made conveniently at this time.
seals are O-rings with backup rings on each side. The crank seal is a "T" with backup rings on each side. The sleeve seal is an O-ring with backup rings on each side.
use of chemical sulfide scavengers, and 3) use of a drilling fluid in which oil is the continuous phase." This configuration is designed for operating pressures of 10,000 or 15,000 psi.
The standard Kellyguard valve is intended for normal drilling environments and those described in NACE MR0175, section 11, which states: "The drilling environment is controlled by maintaining drilling fluid hydrostatic head and fluid density to minimize formation fluid in-flow and by the use of one or more of the following: 1) Maintenance of pH 10 or higher to neutralize H2S in the drilled formation, 2)
The NACE Trim Kellyguard valve is intended for normal and corrosive drilling environments and limited exposure to H2S. The limiting factors for H2S exposure includes H2S concentration, pH, time, and temperature. This configuration uses a standard Kellyguard valve body and NACE compliant internal parts and is rated for 10,000 psi operating pressure.
6 1D
5
1E
4
1J
3
7
SLIP DISASSEMBLY / ASSEMBLY (1E) 1. Unscrew and remove slip nut (1D) from valve body (1C). 2. Remove slip (1E) and slip spring (1J). 3. Clean and inspect disassembled parts. Replace any parts that are worn or damaged. 4. Lubricate surfaces with light grease. 5. Install slip spring (1J) and slip (1E). 6. Install slip nut (1D).
8
1M
1M 1I 1H 1G
1F
LANDING SUB DISASSEMBLY/ ASSEMBLY (2-9) 1. Remove the retaining ring (6) and the retainer ring (5) from the upper split ring (4). 2. Remove the upper split ring (4) from the sub body (2). 3. Remove the landing sleeve (3). 4. Remove the O-ring (7) from the landing sleeve. 5. Remove the O-ring (8) and back up rings (9) from the sub body. 6. Clean and inspect disassembled parts that are worn or damaged. 18
9
1C
2
1B Retrieving Tool
1L 1K 1N 1A
Cutaway View These are cutaway views of the valve in the closed position. Hydril offers Kellyguard: standard and NACE Trim models. In the Hydril NACE Trim, the internal parts only are NACE compatible. Contact your Hydril representative for more information regarding Hydril Kellyguard valves suitable for H2S sour gas service.
3
KELLYGUARD™ VALVES
Standard Model and NACE Trim Kellyguard Valves
Checkguard Valve Maintenance
KELLYGUARD™ VALVES
OF
CONTENTS
KELLYGUARD VALVES Standard Model and NACE Trim ................................2 Operational Advantages and ....................................4 Durable Components Kellyguard Valve Features ..........................................5
KELLYGUARD DRILL STEM VALVES Engineering Data........................................................6 Application Data ........................................................7 Parts List ....................................................................8 Detail View of Parts ....................................................9 Assembly Procedure ................................................10 Maintenance and Testing..........................................11
CHECKGUARD VALVES Applications and Operations ....................................12 Offshore Application ................................................13 Checkguard Valve Selection ....................................14 Features....................................................................16 Assembly Parts ........................................................17 Maintenance ............................................................18 Rubber Goods Storage for ......................................19 Checkguard and Kellyguard Valves
Standard Model and NACE Trim Kellyguard Valves
Rubber Goods Storage for Checkguard and Kellyguard Valves
Hydril’s Kellyguard is a drill stem valve. Drill stem valves facilitate well control and prevent mud spillage. Hydril produces Kellyguard valves to service both the traditional and top drive drilling applications. For traditional applications, they are attached above and below the kelly to close the bore to upward flow from the well, or downward flow while making a connection. For top drive applications, Hydril specializes in dual crank actuator driven valves.
The term rubber goods includes synthetic compounds, such as Nitrile Copolymers and Neoprene, as well as natural rubber parts. The ideal storage situation for rubber goods would be in vacuum-sealed containers maintained in a cool, dry, dark storage area. Atmosphere, light, and heat accelerate deterioration of rubber goods. The term aging means cumulative effects of all three attacking agents over a period of time. The rubber goods are also affected by stretching or bending from normal shape, extreme cold, or chemical reactions with solvents and petroleum products. The following recommendations will allow vendors and users of oil field equipment to maximize normally available storage facilities for rubber goods.
Upper Kellyguard valves are well suited for high flow rates, low to high-pressure sealing, and high tensile loads imposed upon upper kelly cocks. The upper Kellyguard valve has left hand-threaded connections, compatible with the swivel and upper kelly connections. The upper Kellyguard valve is used to close the bore if the drill string becomes stuck with the kelly in the rotary table.
1. Keep the rubber storage area as dark as possible – preferably indoors, not outdoors, and away from direct sunlight, skylights, windows, and direct artificial lighting. The ultraviolet content of the light spectrum accelerates cracking. 2. Select a cool location (ideally below 90°F) that is away from heaters, stoves and direct blasts of space heaters. Heat causes a gradual hardening of rubber goods. The process is greatly accelerated when ozone or oxygen is present. In extremely cold climates, some rubber goods become so brittle they will shatter when dropped or handled roughly. 3. Keep rubber goods away from electrical machinery (motors, switch gear, or any high voltage equipment producing corona). Avoid locations susceptible to drafts that will carry the atmosphere from electrical machinery to the rubber goods storage area. Exposure to the atmosphere allows ozone (O3), a very active form of oxygen, to react with and be especially detrimental to rubber goods. Two principal sources of ozone are (1) atmospheric ozone, and (2) ozone created by electrical discharges such as lighting, high voltage corona, and electrical machinery. Points of strain in rubber goods attacked by ozone are characterized by a hard skin, which eventually crazes into small cracks and may turn chalky or assume a bark-like appearance. 4. The practice of first-in, first-out inventory management is essential with rubber goods. 5. Store rubber goods in a relaxed position in their normal shape. Stretching or bending rubber goods will result in accelerated aging or cracking. For example, do not hang o-rings on pegs, glands, BOP testers, or operator parts. Periodically inspect to detect aging signs and treat the rubber goods that must be stored in a stretched attitude with age resistant compounds. 6. Rubber goods storage areas should be kept as dry as possible. Remove oil, grease or other foreign materials from the storage area to preclude spillage on rubber goods. Rubber goods, both
Lower Kellyguard valves are rated for the rugged applications of lower kelly cocks, including low and high-pressure sealing, high tensile strength, and high torsional strength. They have right hand threaded connections to mate with the lower kelly end and with drill pipe tool joints. The lower Kellyguard valve is positioned below the kelly to close the drill stem bore to hold a kick while preparing to circulate the kick out. It can also be used as a mud saver. Mud saver is the term applied to a lower Kellyguard valve when it is used to save drilling fluid during a connection. It saves mud costs and improves safety by reducing slippery mud on the rig floor. Drill pipe safety valves are lower Kellyguard valves with connections to mate with the drill pipe tool joint. Ratings are the same as lower Kellyguard valves. The valve assists stabbing operations due to its low operating torque for easy closing of the valve. When required, the open valve is stabbed onto the top tool joint, made-up, and manually closed. It is stored in the open position on the rig floor.
© 2003 Hydril Company LP All Rights Reserved.
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Seals The Kellyguard valve is designed for 10,000 or 15,000 psi working pressure. It is tested at the factory to 15,000 or 22,500 psi. Hydril has selected high quality materials and dimensional fits to ensure greatest reliability. Each valve has three elastomeric sealing areas: between each seat and body, between crank and sleeve and between sleeve and body. The seat
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natural and synthetic, possess some degree of susceptibility to deterioration from various solvents, especially oil field liquid hydrocarbons, which cause swelling/shrinkage. If storage for extended periods is anticipated, sealed containers are recommended. Impervious surface coverings are recommended. Impervious surface coverings such as waxing will increase shelf life. Since the aging of a rubber product is dependent upon all of the above factors plus its size, specific composition, and function, no precise figure is available for "storage life." Generally, the greater the ratio of surface area to volume, the more susceptible a part is to being rendered useless by aging. For example, a relatively large part (by volume), such as a packing unit, might be expected to have a much longer useful shelf life than a large diameter O-ring. No general rule can be drawn regarding usability. A large, heavy part might suffer the same total amount of aging as a small, light piece and still be useful, whereas the light piece would be rendered useless. Thus, judgment becomes the rule and where there is doubt, replace the part. Prior to using rubber goods that have been stored for periods of time, these checks should be made: Is there "chalking" or "barking"? Has the part developed a "hard skin"? Do cracks appear? (Sometimes cracks will be obvious; stretch or bend the part in question so that any incipient cracks or very thin cracks will be revealed.) Will a suspect part pass a hardness test? (In the event that the hardness runs 15 points higher than the normal hardness of the part, it is considered non-usable.) Note: Hardness is affected by temperature, and readings should be taken with the rubber part at 70°F.
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RUBBER GOODS STORAGE
TABLE
1-800-999-1601 TOLL FREE IN THE U.S.A. AND CANADA
http://www.hydril.com
Headquarters Hydril Company P.O. Box 60458 ▼ Houston, TX 77205-0458 3300 N. Sam Houston Parkway East ▼ Houston, TX 77032-3411 Telephone: (281) 449-2000 ▼ Fax: (281) 985-3353
Drill Stem Valves KELLYGUARD™ DRILL STEM VALVES • CHECKGUARD® VALVES CATALOG DSV 2003 (REPLACES CATALOG PC 9701A)
For a Hydril Sales, Service or Manufacturing location nearest you, please check our website at www.hydril.com/locations
R 2M GRAPH 10/03
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