Sledgehammer Ops Manual

www.sperry-sun.com

SLEDGEHAMMER

™

HYDRO-MECHANICAL DRILLING JAR UPHOLE UP HAMMER FACE

OPERATING MANUAL

UP ANVIL FACE

DOWN ANVIL FACE

DOWN HAMMER FACE

Sperry-Sun S l edg ehammer H MD J a r 80

35

L

60

T

HM

D

25

MK0089B

DOWNHOLE

METERING VALVE

91

D HM /4" 63 D HM " /2

&

D

8"

40

HM 61

15

30 10

D

" HM 4 3/4

20

5

Sperry-Sun, A Halliburton Company

/2"

50 20

9"

OIL

70

30

P UMP O PEN F ORCE

Direction the piston travels

10

Kgs X 1000

500

0 LBS X 1000

1000 50

1500 100

2000

2500 150

P RESSURE D ROP B ELOW J AR

PSI

BAR

200

SLEDGEHAMMER

™

HYDRO-MECHANICAL DRILLING JAR OPERATING MANUAL

P L E A S E

N O T E :

The documents in sections E, F, H, I, & J are samples only. If full size drawings are required they can be obtained through Sperry-Sun motor facilities or local operations offices.

HYDR0-MECHANICAL DRILLING JAR

SLEDGEHAMMERª HYDRO-MECHANICAL DRILLING JAR TOOL SIZES AVAILABLE OUTER DIAMETER (in.)

(mm)

4 3/4

121

6 1/2

165

6 3/4

171

8

203

9

229

9 1/2

241

ª Trademark of Dresser Industries, Inc. © Copyright ¥ 1995,1999 Sperry-Sun, A Halliburton Company © Registered Trademark of Baroid Technology, Inc. All rights reserved

3

HYDR0-MECHANICAL DRILLING JAR

SLEDGEHAMMERª Jar Features Hydraulic Up-Jar Mechanical Down-Jar ¥ Versatility in application, simplicity in use.

CONTENTS Section A - HOW JARS WORK

6

1 Mechanical 2 Hydraulic

Fully Temperature Compensated ¥ No deterioration of impact with high well temperatures or extended use.

Integral Sealed Design ¥ Maximizes seal and component life Ð no mud in jar.

Mechanical Latch System ¥ Keeps jar cocked, ready for immediate up or down jar. ¥ Eliminates accidental firing in all normal drilling operations.

Section B - THE SLEDGEHAMMERTM HYDRO-MECHANICAL JAR

10

1 Jar Description 2 Operation Quick Guide Section C - SPECIFYING JAR SETTINGS

11

Section D - OPERATION PROCEDURES

12

1 Start Up 2 Using The Jar When Stuck 3 Ideal Jar Placement 4 Checking For Accidental Unlatching 5 Close Down Section E - RIGSITE JAR WORKSHEET

22

Section F - SLEDGEHAMMER JAR TM

¥ Maximizes seal and component life by eliminating fretting.

DETAILED SPECIFICATIONS

23

Section G - PUMP OPEN FORCE CALCULATION AND GRAPH

24

Section H - JAR COMPONENT AND ASSEMBLY DRAWINGS

4

25

Section I - JAR PERFORMANCE REPORT

26

Section J - JAR SHIPPING CERTIFICATE

27

5

HYDR0-MECHANICAL DRILLING JAR

Section A

Principle of Mechanical Jar

How Jars Work A jar contains a hammer and anvil to deliver an impact (like a slide hammer), and a trigger mechanism. Under the influence of an applied load (drillstring tension or drillstring weight), when the jar trigger trips, the hammer travels the length of the jarÕs up or down free stroke as appropriate and strikes the anvil. The resultant impact is several times greater than the applied load. To jar again the jar is recocked and the procedure repeated until the drillstring comes free. The description ÒmechanicalÓ or ÒhydraulicÓ refers to the trigger mechanism. Apart from the trigger, mechanical and hydraulic jars are very similar.

1. Mechanical Jars The jar trigger is mechanical, and the load to trip the trigger up or down is preset. The jar will only trip when the applied load exceeds the setting and will then fire immediately. The jar is normally used latched at midstroke ready to jar up or down but can be used fully open or fully closed. If any load on the jar would tend to open it, the jar is Òin tensionÓ. If the load tends to close it it is Òin compressionÓ.

6

UPHOLE UP HAMMER FACE

UP ANVIL FACE

DOWN ANVIL FACE

DOWN HAMMER FACE DOWNHOLE

LATCH

7

HYDR0-MECHANICAL DRILLING JAR

2. Hydraulic Jars

Principle of Hydraulic Jar

An hydraulic jar has the same up and down free stroke as a mechanical jar, and the same anvil and hammer, but between the up and down stroke is a metering (delay) stroke. A typical jar has a total stroke of about 18Ó, split evenly three ways. When a load is applied to the jar it moves a piston in a cylinder. This forces (meters) oil slowly from one side of the piston to the other. At the end of the metering stroke (when T reaches L, see diagram) oil can bypass the metering valve, and the piston releases the hammer which strikes the anvil generating the impact. It works exactly like a pneumatic door-closer: the door closes slowly at first (meters), then slams under the applied load of a spring. The jar will trip at any load big enough to start the metering process (for example the weight of a drill collar above it in the derrick) but the metering delay allows time to set any load up to the jar maximum. The higher the setting, the harder the hit and the faster the metering process. Typically the delay time will be 10 to 40 seconds. At very low loads the delay time can be up to 5 minutes.

UPHOLE UP HAMMER FACE

UP ANVIL FACE

DOWN ANVIL FACE

DOWN HAMMER FACE

OIL Direction the piston travels

L T

METERING VALVE

DOWNHOLE

Most hydraulic jars have nothing to keep them at midstroke. If the jar is in tension (fully opened) it has to be cocked (displaced through the free stroke then through the length of the metering stroke) before a load can be applied to jar up. If it is in compression the same applies.

8

9

HYDR0-MECHANICAL DRILLING JAR

Section B SLEDGEHAMMERª Hydro-Mechanical Jars

NOTE: When the jar has been fired and before it is recocked, the jarÕs free stroke can be used to establish an accurate measurement of frictional drag acting on the free portion of the drillstring.

1. Jar General Description The SLEDGEHAMMERTM is an hydraulic up-mechanical down jar. The hydraulic up and mechanical down actions work as described above. The SLEDGEHAMMERTM Jar has an important extra feature. It has an additional mechanical latch in the up direction to maintain the jar at mid-stroke. This keeps the jar ready for immediate up or down jarring, and eliminates the risk of accidental jarring during all normal drilling operations.

2. Operation Quick Guide TO JAR UP Ñ Pick up enough string tension (overpull) to unlatch and start the hydraulic delay, adjust overpull to the desired level, and wait for the jar to fire. This will take some 10 to 40 seconds depending on the tension set. To jar again, first recock by slacking off until the jar begins to take any weight (more than 5000 lbs. (2250 daN) but less than the downlatch value), then repeat. TO JAR DOWN Ñ Set down enough string weight on the jar to unlatch. It will fire immediately. To jar again, recock by picking up until the jar begins to take an overpull (greater than 5000 lbs. (2250 daN) but less than the uplatch setting), then repeat.

10

Section C Specifying Jar Settings SLEDGEHAMMERTM jars may be shipped with a Òlatch ratioÓ of 2:1, (the uplatch setting is twice the downlatch setting) or with a 3:1 ratio. The standard latch settings can also be raised or lowered when the jar is built. The specification sheet in Section G shows the nominal shop settings which are suitable for the majority of applications. Whether or not different latch settings must be specified will depend on the placement decisions covered in the next section. NOTE: The manual sections are organized to satisfy first the information needed by the driller who is making up the jar in a specified bottom hole assembly and not in the order in which the complete decision and use process is carried out.

11

HYDR0-MECHANICAL DRILLING JAR This is given below: A) Design the BHA to drill the section. B) Meet as many of the placement conditions below as possible. (Section D, 2) C) Calculate the pick-up and set-down weight to jar up or down if stuck. (Section D, 1) D) Calculate whether or not the jar might unlatch accidentally. (Section D, 3) E) Specify different latch values or alter the BHA if necessary.

Section D Operation Procedures 1. Start Up The jar is delivered to the rig site latched and ready for use. No collar clamps are supplied or required (see below). No adjustments are necessary or possible. All body connections are accurately pretorqued in the shop and should not be altered or checked.

12

The uplatch and downlatch values are marked both on the jar and on the delivery ticket. The jar is run with the chromed spline mandrel upwards (see drawing Section H). No rig or chain tongs should be used on this highly finished surface. A worksheet is supplied with each jar (see Section E) which features a simple method of calculating pick-up and set-down weights to jar. Transfer the information recorded on the delivery ticket to the worksheet. SAFETY CONSIDERATIONS NOTE: The jar will not unlatch in the derrick unless: 1) a weight greater than the up-latch value is hung on the jar, or 2) a weight greater than the downlatch value is made up above the jar. PREPARATION

Record the uplatch and downlatch values on the worksheet. The values may differ from jar to jar depending on shop test results and customer specification. The uplatch value is always greater. Estimate drag and calculate Pump Open Force (see next page). Record the buoyant string weight below the jar to work out string weight above the jar by subtraction. Check that the buoyant weight below the jar is not more than the uplatch value. The jar will unlatch when tripping in if it is.

13

HYDR0-MECHANICAL DRILLING JAR

Hole drag below the jar acts to close it (fire it down) running in hole, and to open it (fire it up) pulling out. An allowance for drag below the jar is therefore added to or subtracted from the unlatch values depending on the calculation. Record hole drag when running in, pulling out or on connections so that the figures are available for the worksheet calculation. Once the jar has been fired, use the free stroke to establish an accurate estimate of drag on the free portion of the drillstring, that is the drag above the jar. Pump open force (POF) is the force generated by the pumps that acts to open the jar. High pump rate (high POF) will make unlatching to jar up easier and the impact higher. Low or no pump rate will make unlatching to jar down easier and the impact higher. First, calculate the total pressure drop below the jars at a circulation rate and a drilling rate (e.g., string losses); plus MWD pressure drop plus motor pressure drop plus bit pressure drop. Second, read off the equivalent POFÕs for the jar from the graph (worksheet or Section G) and record them on the worksheet.

14

2. Using The Jar When Stuck TO JAR UPÑ Hole drag up will resist unlatching. Pump open force will HELP unlatching. Weight indicator setting to unlatch equals: string weight above jar plus latch setting plus drag minus pump open force. NOTE: the jar will unlatch at a lower overpull if the pumps are ON.

For the maximum allowable weight indicator reading to jar up, substitute Òmaximum tensile load during hydraulic delayÓ (from specification sheet Section F) for ÒLatch settingÓ in the above equation or follow the method in the worksheet Section E. To relatch: slack off until the jar takes weight PLUS 5,000 lbs. (2250 daN), but less than the downlatch setting. TO JAR DOWNÑ Hole drag down will still resist unlatching. Pump open force will now RESIST unlatching.

15

HYDR0-MECHANICAL DRILLING JAR Weight indicator setting to unlatch jar equals: String weight above jar minus latch setting minus drag minus pump open force.

3. Ideal Jar Placement MAXIMIZING JARRING EFFICIENCY

1) The jar may be run in tension or compression. NOTE: The jar will unlatch at less set-down if the pumps are OFF. This is useful if drag is high: the pumps can be backed off to make unlatching easier (and increase impact), then restored to normal.

The maximum allowable weight indicator reading to jar down is the string weight. To relatch: pick up until the jar takes string weight PLUS more than 5,000 lbs. (2250 daN), but less than the uplatch setting. In both cases, after the first hit, the free stroke of the jar should be used to record an accurate measure of hole drag in the (free) string above the jar. The first hit has to be made on an estimate based on the recording of drag in the whole string. It is therefore NOT ADVISABLE to attempt to pull the maximum on a first hit up in case drag has been overestimated. Avoid jarring up or down before string torque is released. The combination of trapped torque and impact risks backing off a connection.

16

2) Place the jar at least 30 feet (10m) above stabilizers or roller reamers or other components larger in diameter than the jar itself. 3) Place the jar close to and above the likeliest sticking point on the BHA. 4) Make up a MINIMUM of three collars, or the equivalent in joints of heavyweight drillpipe directly above the jar. Ideally, if collars are below the jar, collars should be above the jar. PLACEMENT CALCULATIONS

In a frictionless hole, the jar might fire up accidentally running in hole because of BHA weight below it, or fire down going on to bottom to drill because it is put into enough compression to unlatch it. In a real hole, drag and POF (above) must be considered. The drag below the jar is what is required for tripping calculations, but it will have to be estimated based on the total string drag.

17

HYDR0-MECHANICAL DRILLING JAR

4. Checking For Accidental Unlatching CASE 1 Ñ The jar unlatches running into hole under BHA weight. It meters off (trips), and ÒdropsÓ the BHA through the free stroke. The BHA may be hanging from slips or elevators when this happens. The jar will not unlatch if the uplatch value is higher than BHA weight (below jar) minus drag plus POF. (Hole drag up resists unlatching up, POF helps unlatching up.) For example: 6 1/2Ó jar with standard 2:1 uplatch setting 80,000 lbs. , BUOYANT BHA weight of 41,000 lbs., drag 5000 lbs., POF 20,000 lbs. Latch Setting: = 80,000 lbs. Unlatching Force: 41,000 - 5000 + 20,000 = 56,000 lbs. 56,000 lbs. is the net tension force on the latch. A negative number would mean that the jar was in compression. This gives a safety margin of 24,000 lbs. (80,000 56,000) with pumps on, 44,000 lbs. with no pumps. CASE 2 Ñ The jar unlatches going into compression as WOB is applied. It trips, and ÒfiresÓ the BHA against bottom. The jar will not unlatch if the downlatch setting is no greater than WOB plus drag minus BHA weight (below jar) and POF. (Hole drag down helps unlatching down, POF resists unlatching down.)

18

For example: 6 1/2Ó jar with standard downlatch setting 40,000 lbs., buoyant BHA weight of 41,000 lbs., drag 5000 lbs., POF 20,000 lbs., and 30,000 lbs. WOB. Unlatching force: 30,000 + 5000 - 41,000 - 20,000 = - 26,000 lbs. The result is negative, so the jar is still in tension by 26,000 lbs. This gives a safety margin of 66,000 lbs. with the pumps on (26,000 lbs. to overcome tension plus 40,000 lbs. to overcome the latch). With the pumps off the safety margin is 46,000 lbs. SAFETY MARGINS

In Case 1, the jar will not fire due to BHA weight running in hole. It could fire tripping out of hole if drag, now acting to open the jar, were to increase to more than 19,000 lbs. (41,000 + 19,000 + 20,000 = 80,000 lbs.). In that case, a 3:1 latch ratio can be specified, restoring the safety margin again. In Case 2, the jar will not fire going on bottom. Since the safety margin is already high, WOB could be raised or the BHA could be shortened if either of these were necessary or desirable. Note that much of the WOB is being compensated for by pump open force. Remember that when tripping, drag below is used; when firing, drag above is used.

19

HYDR0-MECHANICAL DRILLING JAR

5. Close Down After use, in accordance with good oilfield practice, clean all drilling mud from the jar body, particularly around the chrome mandrel. Check the jar visually for damage, missing oil-plugs, etc. Occasionally a jar may come out of the hole unlatched. Should that happen, proceed with the following: If the measured dimension is greater than dimension ÒAÓ, the jar is unlatched ÒopenÓ. When fully open ÒAÓ = 16.25 inches for 6.50 inch HMD2 jars and for all others ÒAÓ = 17 inches. If the jar is ÒopenÓ, either: 1) The jar was fired up immediately before tripping out; or 2) Drag and POF opened the jar. In this case, consider the need to change positioning of the jar to prevent this from happening. See Section D3 - Ideal Jar Placement. There may not be enough drill collar weight in the derrick to relatch it. If there is not, when racked back, the jar will close by approximately 6-10 inches from fully open under its own weight and any weight above it.

20

It will then be sitting on its latches, and will close no further. In this case, care must be taken when picking the jar up to allow it to bleed through the 4 inch metering stroke before the 6 inch free stroke. It will bleed slowly through the metering stroke, then fall through the free stroke to fully open. Allow this to happen before attempting to stab in. Once set in the slips it will close again, but will not fire. Pick up slowly to allow it to bleed through again before picking out of the slips and running in. It can be relatched on bottom. If the measured dimension is smaller than dimension ÒAÓ, the jar is unlatched ÒclosedÓ. In this case the jar should be changed out. No normal combination of circumstances can cause this. Maintaining and improving product quality and performance depends on good communication between field and shop. Please make time to complete and return to Sperry-Sun the jar performance report (Section ÒIÓ of this manual).

21

HYDR0-MECHANICAL DRILLING JAR

Section E Rigsite Jar Worksheet Sample of Rigsite Jarring Work Sheet S L E D G E H A M M E R

Customer Rig: Jar serial no: Dimension "A" Jar relatches from open at: Jar relatches from closed at: A) B) 1) 2) 3) 4) 5A) 5B)

H M D

Well no: Depth in Jar length IN /MM LB/DAN

FT / M FT / M S PLINE MANDREL

LB/DAN

Buoyant BHA weight below top of jar Buoyant total drill string weight Jar uplatch settings Jar downlatch settings Drag up (observed ) Drag down (observed ) Pump Open Force at Pump Open Force at

D IM A

S PLINE CAP

E XPOSED CHROME

LB/DAN LB/DAN LB/DAN LB/DAN LB/DAN LB/DAN G PM / L PM

LB/DAN

G PM / L PM

LB/DAN

WEIGHT INDICATOR READING TO JAR UP Drill string weight above jar (B-A) Jar uplatch setting (1) Drag up (3) Subtotal Pump Open Force (5) Minimum weight indicator reading to jar up Max tensile load during delay ( spec sheet ) Subtotal MINUS up latch setting

(+) (+) (-) LB/DAN

(+)

LB/DAN LB/DAN

(-)

Maximum weight indicator reading to jar up

LB/DAN LB/DAN

WEIGHT INDICATOR READING TO JAR DOWN

Drill string weight above jar (B-A) Jar downlatch setting (2) Drag down (4) Subtotal Pump Open Force (5) Total Maximum (Available String Weight)

(-) (-) (-) LB/DAN LB/DAN

PUMPS ON:

DECREASES OVERPULL TO JAR UP INCREASES IMPACT TO JAR UP

PUMPS OFF:

DECREASES SET DOWN TO JAR DOWN INCREASES IMPACT TO JAR DOWN

22

¨

A Halliburton Company

Fold

Section F SLEDGEHAMMERª Detailed Specifications 4-3/4

Tool Size

6-1/2

6-3/4

8

9

9-1/2

Outer Diameter

in. (mm)

4.82 (122)

6.50 (165)

6.87 (175)

8.12 (206)

9.12 (232)

9.62 (244)

Inner Diameter

in. (mm)

2.00 (51)

2.50 (64)

2.75 (70)

2.75 (70)

3.00 (76)

3.00 (76)

NC 38 (3-1/2")

NC 46 (4" IF or

5 H 90

6-5/8" REG

7-5/8" REG

7-5/8" REG

Standard Tool Joint

NC 50 (4-12" IF) Overall length (in latched position)

in. (m)

20' 6'' (6.25)

21'5" (6.53)

21'8" (6.60)

22'4" (6.81)

22'6" (6.86)

22'6" (6.86)

Weight

lbm. (kg)

900 (405)

1890 (850)

2050 (930)

2950 (1325)

3750 (1690)

4200 (1890)

Up Latch Release Force (Maximum)

lbf. (daN)

80,000 (36,000)

120,000 (54,000)

135,000 (60,000)

150,000 (71,000)

150,000 (71,000)

150,000 (71,000)

3:1 Latch

(Typical)

lbf. (daN)

Not Available

120,000 (54,000)

120,000 (54,000)

135,000 (60,000)

135,000 (60,000)

135,000 (60,000)

2:1 Latch

(Typical)

lbf. (daN)

50,000 (22,000)

80,000 (36,000)

80,000 (36,000)

90,000 (40,000)

90,000 (40,000)

90,000 (40,000) 45,000 (20,000)

Down Latch Release Force (Typical)

lbf. (daN)

25,000 (11,000)

40,000 (18,000)

40,000 (18,000)

45,000 (20,000)

45,000 (20,000)

Max. Tensile Load during Hydraulic Delay

lbf. (daN)

80,000 (36,000)

135,000 (60,000)

150,000 (71,000)

220,000 (98,000)

250,000 (98,000)

250,000 (110,000)

Max. Tensile Load after Jarring

lbf. (daN)

300,000 (130,000)

650,000 (290.000)

750,000 (340,000)

950,000 (425,000)

1,000,000 (450,000)

1,200,000 (530,000)

Maximum Torsion Load (Yield)

ft-lbf. (N-m)

15,000 (20,500)

36,500 (49,500)

43,000 (58,500)

70,000 (95,000)

96,000 (128,000)

97,500 (130,000)

Mandrel Area (to calculate Pump Open Force)

in^2 (cm^2)

11.0 (71)

18.7 (121)

20.7 (133.7)

23.8 (154)

30.7 (198)

30.7 (198)

Total Stroke

in. (mm)

17.0 (432)

16.25 (413)

17.0 (432)

17.0 (432)

17.0 (432)

17.0 (432)

Free Stroke (Up)

in. (mm)

5.2 (132)

6.0 (152)

6.0 (152)

6.0 (152)

6.0 (152)

6.0 (152)

Metering Stroke (Up)

in. (mm)

5.8 (148)

5.0 (128)

5.0 (128)

5.0 (128)

5.0 (128)

5.0 (128)

Free Stroke (Down)

in. (mm)

6.0 (152)

5.25 (134)

6.0 (152)

6.0 (152)

6.0 (152)

6.0 (152)

Maximum Temperature (Standard)

deg F (C)

250 (121)

250 (121)

250 (121)

250 (121)

250 (121)

250 (121)

deg F (C)

400 (204)

400 (204)

400 (204)

400 (204)

400 (204)

400 (204)

(High Temp)

23

Fold

HYDR0-MECHANICAL DRILLING JAR

Section G Pump Open Force Calculations and Graph

80

Pump Open Force is calculated by multiplying the pressure drop below the jar by the mandrel area (from the specification table see page 23).

70

EXAMPLE:

60

Pressure loss is BHA below jar .................... 350 psi ( 24.1 bar )

™

Sperry-Sun SLEDGEHAMMER HMD Jar 35

HM D

25 91

/2"

50

8

40

"

HM

61

15

Pressure drop across MWD ......................... 350 psi ( 24.1 bar )

D

HM /4" 3 6 D HM /2" D

&

20

9"

P UMP O PEN F ORCE

30

Pressure drop across motor ......................... 500 psi ( 34.5 bar )

30 10

MD

20

5

43

Pressure drop across bit ............................... 950 psi ( 65.5 bar )

H /4"

10

Kgs X 1000

Total, Pressure drop below jar .................... 2150 psi ( 148.3 bar ) 500

0 LBS X 1000

1000 50

1500 100

2000

2500 150

P RESSURE D ROP B ELOW J AR

24

PSI

BAR

200

Mandrel area ( assume 6 -1/2" jar ) ........... 18.7 sq in/121 cm2 Pump Open Force = 2150 x 18.7 = 40,000 lbs. ( 18,000 kg )

¨

HYDR0-MECHANICAL DRILLING JAR

Section H Jar Component and Assembly Drawings SAMPLE SHOWS 6 1/2" TOOL SIZE SEE NOTE 1 2.50 TOOL MIN I.D.

API TOOL JOINT

6.50 6.50

18.10 MAX

SPLINE MANDREL

27.855

SPLINE CAP 4.63

SPLINE CAP

SPLINE MANDREL

60.91

SPLINE HOUSING

6.50

39.625 SPLINE HOUSING 7.00

4.99 KNOCKER HOUSING

6.50 3.87

38.88

HYDRAULIC HOUSING

KNOCKER MANDREL

METERING VALVE

30.63 34.63

KNOCKER HOUSING

HYDRAULIC MANDREL

4.13 6.50

4.50

HYDRAULIC HOUSING

6.13 3.50

44.00

LATCH MANDREL

LATCH HOUSING

PISTON HOUSING

4.00

6.50 MANDREL EXTENSION

BALANCE PISTON

4.63

32.50 LATCH HOUSING

3.50

28.50

31.20 BOTTOM SUB

MANDREL EXTENSION

51.75

MECHANICAL LATCH

MECHANICAL LATCH

4.00

6.50 5.25

6.50 47.00 24.88 MAX

BOTTOM SUB

API TOOL JOINT

25

PISTON HOUSING

43.00

HYDR0-MECHANICAL DRILLING JAR

Section I

Section J

Jar Performance Report

Jar Shipping Certificate

SLEDGEHAMMERª Jar Performance Report 1

Jar Serial #

4

Dir. Driller(s)

6

Location

9

2

7 10

Well Number ft m

14

Depth In

18

Application Details

15

Rig

SLEDGEHAMMER™ Jar Shipping Certificate

HMD - PR #

i nch mm

Jar Size 5

Job #

8

Operator

3

Date 1

ft m

16

17

Date In

Date Out

A SSEMBLY DETAILS JAR AS SUPPLIED

19

2

Customer

Job Number

J A R I N F O R M AT I O N

Cumulative Bit Run #

Depth Out

SC #

J O B I N F O R M AT I O N

3

Jar Serial Number

4

Jar Size (OD)

7

Top Connection

9

BHA Configuration to Unlatch Up

lb N

23 Relatch

lb N

21 Force

to Unlatch Down

lb N

24 Relatch

lb N

25 Hydraulic

Delay

5

Jar ID (minimum)

8

Bottom Connection

in mm

12

6

10 in mm

Dimension "A" in latched position (see diagram)

11 This

20 Force

in mm

Jar Type

Face to Face Length

in mm

jar was shipped in the latched position by: 13

Tester's Name

14

Signature

Date

Seconds i nch mm

22 Length 26 Dimension

Di m e n s i o n " A " ( i n l a t c h e d p o s i t i o n )

"A" (exposed chrome length in latched position)

O PERATING DATA 27

Jarring Occured?

Yes

[ If "NO" Omit Incidence Of Jarring Report ]

No

28 29

lb kg

Weight of BHA Below (Wb)

30

31

Inclination Start

H OURS

Inclination End Fa c e t o F a c e L e n g t h

M UD PUMPING DATA

Drilling Hours

37

Mud Weight

l b/gal kg m3

31

Circulating Hours

38

Standpipe Pressure

p si kP a

32

Reaming Hours

39

Pressure Loss (Jar to Bit)

p si kP a

30

33

40

Total Hours This Run

34 Previous

41 Jar

Cumulative Hours

p si kP a

Pressure Loss (Across Bit)

p si kP a

Pump Open Pressure (DP)

35

New Cumulative Hours

42

Jar Pump Open Force

lb N

36

Days on Jar This Run

43

DP x (Mandrel Area)

lb N

44

Hole Drag Up/Down

lb N

PERFORMANCE SETTINGS 15

Mechanical Latch Up

16

Up Latch Release Setting

lb daN

17

Down Latch Release Setting

lb daN

18

Relatch Setting

lb daN

19

Relatch Setting

lb daN

20

Hydraulic Delay Up@ Up Latch Release Setting

Seconds

21

Hydraulic Delay Up@ Up Latch Release Setting

Seconds

I NCIDENCE OF JARRING REPORT 45

Maximum Jarring Load Up

46

Maximum Jar Tension Post Impact

47 Time

Duration While Jarring

2: 1 Latch Ra t i o

3: 1 Latch Ra t i o

SPECIAL NOTES OR COMMENTS

lb N

50

Maximum Jarring Load Down

lb N

51

Approx. Numbers of Times Jar Fired Down

lb N

H ours

48

Approx. Numbers of Times Jar Fired Up

49

Hydraulic Delay at Maximum Load

52

Comments on Jar Performance

53

Problem Perceived?

52

Customer Representative's Signature:

S econds

23

Yes

No

54

Problem Data

55

HMD PPR Reference #

22

Mechanic (s)

N ote: if a problem is perceived, a "Perceived Problem Report" MUST be raised.

26

27

Date (Summary)

HYDR0-MECHANICAL DRILLING JAR

Notes

Notes

28

29

HYDR0-MECHANICAL DRILLING JAR

Notes

Notes

30

31

HYDR0-MECHANICAL DRILLING JAR

Notes