Drill Shoe by Weatherford
March 22, 2017 | Author: JohnSmith | Category: N/A
Short Description
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Description
Drilling with Casing (DwC™) Systems
IN D EX Introduction, Step Change Technology and Features
Rotating the Casing
DrillShoe™ I and Case Histories
DrillShoe™ II and Case Histories
DrillShoe™ III
XpandaBit™ and Case Histories
Specifications
Weatherford products and services are subject to Weatherford’s standard terms and conditions. For more information concerning the full line of Weatherford products and services, please contact your authorised Weatherford representative. Unless noted otherwise, trademarks and service marks noted herein are the property of Weatherford. The BBL stylised logo is a registered United Kingdom trademark of Weatherford
©2003 Weatherford.All rights reserved.
Introduction Rotating the Casing
DrillShoe™ System
DrillShoe I
NOVEL “DRILLING with CASING” (DwC™) TECHNOLOGY TRANSFORMS WELL CONSTRUCTION PRACTICE.
DrillShoe II
Weatherford offers a range of proprietary drillable drill bits, that are made up directly onto the casing using the casing as the drillstring. This procedure contrasts with competing drilling with casing systems, which do not operate by rotating the casing. These systems are complex and involve substantially sophisticated downhole equipment.
DrillShoe III
The DrillShoe System is a step-change technology which transforms well construction efficiency. There are many applications for Drilling with Casing (DwC) where operational problems can be avoided and financial savings can be realised.
XpandaBit
Introduction Page 1 2 3 4
©2003 Weatherford.All rights reserved.
Specifications
POTENTIAL APPLICATIONS EXIST IN EVERY OIL FIELD IN THE WORLD.
Introduction Rotating the Casing
What is a DrillShoe™? DrillShoe™ is our name for a Drillable Casing Drill Bit. The DrillShoe is made up to the casing in the same way as a conventional drill bit would be made up to a drill string. The DrillShoe has a two part construction; 1. A body made from steel, which has the casing connection and a tungsten carbide gauge section.
DrillShoe I
2. A nose made from aluminium alloy which incorporates a drillable cutting structure mounted on integral blades. The nose and the body are threaded and locked together and the tool is supplied as a unit, as shown.
1. 2. 3.
DrillShoe II
Three cutting structures are currently available. Two of these are drillable with standard oilfield drill bits, the third is displaced into the annulus after the casing has been drilled to total depth, removing all hard materials from the path of the subsequent bit. Dense, thin layer of tungsten carbide applied to integral aluminium alloy blades Thermally Stable Polycrystalline Diamond cutting structure mounted in integral aluminium alloy blades. PDC cutters mounted on steel blades which are displaced to the annulus by a simple pressure cycle.
DrillShoe III
Each of these cutting structures cuts the rock with a shearing action just as PDC cutters on a conventional PDC drill bit and each tool can be drilled through with standard oilfield drill bits or another DrillShoe on casing. The nose of the DrillShoe has drillable nozzless strategically positioned to clean and cool the cutting structure and flush away the cuttings up the annulus.
XpandaBit
The center of the unit is fully drillable with PDC or roller cone drill bits, or with another DrillShoe. Drill out can take between 10 minutes and 40 minutes, depending on size and style of the bit used. The installation of a separate float collar in the casing string allows the cementation operation to begin immediately TD has been reached, and to be completed as normal. After ‘waiting on cement’ the next drill bit is run and drills through the shoetrack and DrillShoe before entering virgin formation.
©2003 Weatherford.All rights reserved.
Specifications
Introduction Page 1 2 3 4
Introduction Rotating the Casing
STEP CHANGE TECHNOLOGY Operating Procedure
DrillShoe I
• The DrillShoe™ System uses casing as the drill string in a similar manner to a drill bit on drillpipe. Using a top drive, the casing is rotated. As the well is being drilled additional lengths of casing are added. • Once all the casing has been drilled in to the depth required, drilling stops and the assembly is cemented in place as normal.
DrillShoe II
• The next drilling (conventional or DwC™) assembly is run in to drill out the cement. This assembly will drill through the center of the previous DrillShoe System without damage...typically in 10 to 30 minutes, and carry on drilling as required.
DrillShoe III
Benefits • Reduces rig time and operating costs. • Reduces flat time and operational time.
XpandaBit
• Improves and simplifies well construction operations. • Reduces hole problems. • Eliminates casing running problems.
©2003 Weatherford.All rights reserved.
Specifications
Introduction Page 1 2 3 4
Introduction Rotating the Casing
FEATURES
DrillShoe I
High Stand-Off “fishtail” blades with wave cutting profile
Hydraulic optimisation with fixed flow ports or interchangeable drillable nozzles
Tungsten Carbide cutting structure on DrillShoe™ I
Stabiliser pads with tungsten carbide gauge protection
PDC cutting structure on DrillShoe™ II
Backreaming feature
DrillShoe III
Fully drillable center nose section
DrillShoe II
DSI - drillable carbide DSII - diamond cutting structure DSIII - displaceable PDC cutting structure
©2003 Weatherford.All rights reserved.
Specifications
Introduction Page 1 2 3 4
XpandaBit
Weatherford is continuously improving DwC™ technology and introducing new product variations. Please contact us for the latest information.
Introduction Rotating the Casing
Rotating the Casing Water Bushing
DrillShoe I DrillShoe II
• A simple x-over between top drive and casing string. • Limited applications.
DrillShoe III
• Time consuming.
XpandaBit ©2003 Weatherford.All rights reserved.
Specifications
Rotating the Casing Page 1 2 3 4
Introduction Rotating the Casing
‘Water Bushing’ Crossover
DrillShoe I
A Water Bushing is the name given to a crossover from drill pipe (or Top Drive) to the Casing. It is simply a sub with a drill pipe connection (box) up and a casing connection (pin) down which is positioned between the Top Drive and the Casing String.
DrillShoe II
Although a Water Bushing meets all the technical requirements for Casing Drilling, it has one big disadvantage...TIME. As drilling progresses, every time a joint is added, one break out and two make up operations are required. Since casing connections take longer than drill pipe connections the time saving advantage of Drilling with Casing may be lost.
DrillShoe III
A Water Bushing is suitable ONLY for the following applications:
©2003 Weatherford.All rights reserved.
Specifications
Rotating the Casing Page 1 2 3 4
XpandaBit
• Short Casing Strings, say less than 500ft. • Very large casing string i.e. 20”+ • Jobs where reducing flat time is NOT the primary consideration, i.e. major hole problems.
Introduction
Casing Drilling Spear Assembly using tools from inventory
Spacer Sub
DrillShoe I
Spear Grapple with extended stop ring left hand release and bi-directional slips
Rotating the Casing
ROTATING THE CASING
Casing Spear
DrillShoe II
Double Pin Sub
Weatherford Casing Spear Assembly Spear Pack-Off
DrillShoe III
Cut box connection in Bull Nose
XpandaBit
Weatherford have developed a spear that replaces the conventional threaded crossover. Some existing spears can be modified to make them purpose fit for Drilling with Casing operations. Once modified, their operation is fast and simple. Stab the spear into the top of the casing joint rotate a quarter turn to the left. The Casing Drilling Spear is field proven and simple to use.
Stabilizer
Rotating the Casing Page 1 2 3 4
©2003 Weatherford.All rights reserved.
Specifications
Bull Nose
Introduction Rotating the Casing
PURPOSE BUILT DRILLING WITH CASING SPEAR
DrillShoe I DrillShoe II
Understanding the limitations of modified fishing spears, Weatherford developed a fit for purpose spear for Drilling with Casing. The casing drilling spear combines all the required elements and with an extended depth range.
DrillShoe III XpandaBit ©2003 Weatherford.All rights reserved.
Specifications
Rotating the Casing Page 1 2 3 4
Introduction Rotating the Casing
DrillShoe™ I
DrillShoe I DrillShoe II
Since January 2000, this DrillShoe System has accumulated hundreds of successful runs to date. The target casing running depth has been achieved on every job. A rapid, damage-free drill out was also achieved with the subsequent bit run. Applications for the DrillShoe System include drilling very soft to soft unconsolidated rock; typically surface hole. Various product sizes are available from 95/8” to 30” casing, drilling from 11¾” to 36” hole.
DrillShoe III
The DrillShoe System is suitable for applications with standard “Buttress” or premium casing connections.
XpandaBit
DrillShoe I Page 1 2 3 4 5 6 7 8
©2003 Weatherford.All rights reserved.
Specifications
Click on Image to view Features
Introduction
Running Procedure: DrillShoe™ I
This tool is very aggressive and will drill quickly with low WOB. Aggressive drilling tools can generate high torque for low weight. It is recommended that WOB be kept to a minimum until the torque response of the DrillShoe I is known.
Making Up to the Casing Drilling String
Drilling Ahead
Stand the DrillShoe box up on a rubber mat or wooden board. Make up to normal casing torque. Pick up and run as per normal procedure.
Always kick in the pumps and rotate before going to bottom. Increase weight gradually to achieve desired ROP. Remember that excessive WOB will reduce tool life. Monitor pump pressure carefully, as an increase may indicate bit balling. If bit balling is suspected pick up off bottom, rotate at high rpm, and cycle the pumps several times to try to wash the DrillShoe tool clean of cuttings.
Drilling-out through shoe track and another DrillShoe tool
Drilling Out after Cementation
DrillShoe I is NOT designed to drill the shoe track. If this is a rquirement a DrillShoe II with diamond cutting structure is required.
Drill through the float equipment as per normal procedure. Before tagging the DrillShoe Nose, set rotary at 20-50rpm, pump at maximum rate. PDC can take 5-20 minutes with 1.5 - 3 tonnes WOB to exit the DrillShoe tool. Roller Cone can take up to one hour, use higher WOB. Be patient. If required to ream the DrillShoe body stop rotation before pulling back.
DrillShoe I Page 1 2 3 4 5 6 7 8
©2003 Weatherford.All rights reserved.
Specifications
Pump at high flow rate, rotate at about 40rpm. Zero the weight indicator, record pump pressure and torque. Run down slowly to tag bottom, carefully monitoring WOB, torque and pressure. It is recommended that the first few metres are drilled down with minimum weight to bed in the DrillShoe tool.
XpandaBit
Unpack the tool and make the following checks: Check and record the serial number, tool size and type. Confirm no damage to aluminium nose or cutting structure. Check that the ports / nozzles are clear. Remove thread protector and check for damage. Confirm that there is no debris inside the tool.
DrillShoe III
Initiating the Drilling Process in Open Hole
DrillShoe II
Preparation Prior to Running
DrillShoe I
Never set the tool on bottom unless full pump rate and rotation have been achieved.
Rotating the Casing
General Information and Recommendations The central portion of the nose of the tool is constructed from aluminium alloy, which is fully drillable with any type of oilfield drill bit. This is set with high density, HVOF tungsten carbide on the front of the blades.
Introduction Rotating the Casing
DrillShoe™ I - FEATURES
DrillShoe I
Drillable Carbide
High Stand-Off “fishtail” blades with wave cutting profile
Hydraulic optimisation with fixed flow ports or interchangeable drillable nozzles
DrillShoe II
Fully drillable center nose section
DrillShoe III
Stabiliser pads with tungsten carbide gauge protection
XpandaBit
Tungsten Carbide cutting structure
Backreaming feature
Return to DrillShoe I
©2003 Weatherford.All rights reserved.
Specifications
Weatherford is continuously improving DwC™ technology and introducing new product variations. Please contact us for the latest information.
Introduction Rotating the Casing
DrillShoe™ I - Case History THAILAND: First DrillShoe I run Casing String Distance Drilled Total / On Bottom Average ROP Flow Rate
9 5/8” Surface Casing 690 ft 4.3 / 2.3 hrs 300 ft/hr 790 gpm
•
Running Parameters
WOB RPM Torque Flow
DrillShoe I
• • • • •
DrillShoe II
0-10 klbs 60-150 2-7 kftlb 700 gpm
DrillShoe III
Successful DrillShoe I run.
XpandaBit
BB452 drilled-out very quickly but was damaged pulling back into shoe after successful drill-out. Design and Operating procedure changed.
©2003 Weatherford.All rights reserved.
Specifications
DrillShoe I Page 1 2 3 4 5 6 7 8
Introduction Rotating the Casing
DrillShoe™ I - Case History THAILAND 9 5/8” Surface Casing Buttress 780 ft 5.0 / 1.5 hrs 520 ft/hr
•
Running Parameters
WOB 2-10 klbs RPM 50-120 Torque 2 kftlb (up to 8 kftlb if stringers present) Flow 800 gpm
DrillShoe II
Casing String Casing Thread Distance Drilled Total / On Bottom Average ROP
DrillShoe I
• • • • •
DrillShoe III
Drilled-out with PDC bit in 15 minutes. No damage to bit.
XpandaBit ©2003 Weatherford.All rights reserved.
Specifications
DrillShoe I Page 1 2 3 4 5 6 7 8
Introduction Rotating the Casing
DrillShoe™ I - Case History THAILAND Casing String Distance Drilled Total / On Bottom Average ROP
9 5/8” Surface Casing 780 ft 6.0 / 1.3 hrs 607 ft/hr
•
Running Parameters
WOB RPM Torque Flow
DrillShoe I
• • • •
DrillShoe II
2-12 klbs 50-90 1-2 kftlb 870 gpm
DrillShoe III
First run with re-designed Drillshoe I (reduced TFA/Higher Flow). Very fast run.
XpandaBit
Drilled out with BB452 in 10 minutes.
DrillShoe I Page 1 2 3 4 5 6 7 8
©2003 Weatherford.All rights reserved.
Specifications
No damage to bit.
Introduction Rotating the Casing
DrillShoe™ I - Case History THAILAND 9 5/8” Surface Casing 703 ft 1.4 hr 502 ft/hr 870 gpm
•
Running Parameters
WOB RPM Torque Flow
DrillShoe II
Casing String Distance Drilled On Bottom Time Average ROP Flow Rate
DrillShoe I
• • • • •
2-8 klbs 50-200 1-2 kftlb (8kftlb spike) 870 gpm
DrillShoe III
Very successful run.
©2003 Weatherford.All rights reserved.
Specifications
DrillShoe I Page 1 2 3 4 5 6 7 8
XpandaBit
ROP failing off towards end of run. Successfull drill-out using a PDC bit.
Introduction Rotating the Casing
DrillShoe™ I - Case History THAILAND Casing String Distance Drilled Total / On Bottom Average ROP
9 5/8” Surface Casing 825 ft 4.5 / ~1.5 hrs ~550 ft/hr
•
Running Parameters
WOB RPM
DrillShoe I
• • • •
DrillShoe II
4-14 klbs 50-80
DrillShoe III XpandaBit ©2003 Weatherford.All rights reserved.
Specifications
DrillShoe I Page 1 2 3 4 5 6 7 8
Introduction Rotating the Casing
DrillShoe™ I - Case History THAILAND Casing String Distance Drilled Total / On-Bottom Average ROP
13 3/8” Surface Casing 715 ft 11.8 / 8.6 hrs 83 ft/hr
•
Running Parameters
WOB RPM Torque Flow
DrillShoe I
• • • •
DrillShoe II
1-12 klbs 20-80 0.5-1.5 kftlb 830 gpm
DrillShoe III
Slowed down over last 200ft. Probably caused by bit balling.
XpandaBit
Recommendation to increase hydraulic horsepower.
©2003 Weatherford.All rights reserved.
Specifications
DrillShoe I Page 1 2 3 4 5 6 7 8
Introduction Rotating the Casing
DrillShoe™ II
DrillShoe I
The DrillShoe II was launched in July 2000 as the second generation tool. It is designed to drill “consolidated” formations beyond the scope of DrillShoe I. This tool incorporates PDC cutters on the shoulder together with a proprietary diamond cutting structure bonded onto central “drillable” blades.
DrillShoe II
The DrillShoe II is available in a wide range of sizes from 5” to 30” and can be run on most standard casing or liner systems. In order to optimise the hydraulic performance of these tools, a range of interchangeable “drillable” nozzles are available.
DrillShoe III XpandaBit
DrillShoe II Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
©2003 Weatherford.All rights reserved.
Specifications
Click on Image to view Features
Introduction
Running Procedure: DrillShoe™ II
This tool is very aggressive and will drill quickly with low WOB. Aggressive drilling tools can generate high torque for low weight. It is recommended that WOB be kept to a minimum until the torque response of the DrillShoe II is known.
Making Up to the Casing Drilling String
Drilling Ahead
Stand the DrillShoe box up on a rubber mat or wooden board. Make up to normal casing torque. Pick up and run as per normal procedure.
Always kick in the pumps and rotate before going to bottom. Increase weight gradually to achieve desired ROP. Remember that excessive WOB will reduce tool life. Monitor pump pressure carefully, as an increase may indicate bit balling. If bit balling is suspected pick up off bottom, rotate at high rpm, and cycle the pumps several times to try to wash the DrillShoe tool clean of cuttings.
Drilling-out through shoe track and another DrillShoe tool
Drilling Out after Cementation
Tag the cement / plug and pick up a few inches. Pump at max flow rate, rotate at very low rpm. Gradually increase weight until progress is established. Monitor torque carefully, if any spikes are seen or vibration noted, pick up and re-run to bottom. Do NOT force it, there is only 6” drilling to exit the DrillShoe cutting segment.
Drill through the float equipment as per normal procedure. Before tagging the DrillShoe Nose, set rotary at 20-50rpm, pump at maximum rate. PDC can take 5-20 minutes with 1.5 - 3 tonnes WOB to exit the DrillShoe tool. Roller Cone can take up to one hour, use higher WOB. Be patient. If required to ream the DrillShoe body stop rotation before pulling back.
DrillShoe II Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
©2003 Weatherford.All rights reserved.
Specifications
Pump at high flow rate, rotate at about 40rpm. Zero the weight indicator, record pump pressure and torque. Run down slowly to tag bottom, carefully monitoring WOB, torque and pressure. It is recommended that the first few metres are drilled down with minimum weight to bed in the DrillShoe tool.
XpandaBit
Unpack the tool and make the following checks: Check and record the serial number, tool size and type. Confirm no damage to aluminium nose or cutting structure. Check that the ports / nozzles are clear. Remove thread protector and check for damage. Confirm that there is no debris inside the tool.
DrillShoe III
Initiating the Drilling Process in Open Hole
DrillShoe II
Preparation Prior to Running
DrillShoe I
Never set the tool on bottom unless full pump rate and rotation have been achieved.
Rotating the Casing
General Information and Recommendations The central portion of the nose of the tool is constructed from aluminium alloy, which is fully drillable with any type of oilfield drill bit. This is set with a combination of small Thermally Stable Diamond cutting elements and high density, HVOF tungsten carbide on the front of the blades. The outer flanks have PDC cutters.
Introduction Rotating the Casing
DrillShoe™ II - FEATURES
DrillShoe I
Diamond cutting structure
High Stand-Off “fishtail” blades with wave cutting profile
Hydraulic optimisation with fixed flow ports or interchangeable drillable nozzles
DrillShoe II
Fully drillable center nose section
DrillShoe III
Stabiliser pads with tungsten carbide gauge protection
XpandaBit
PDC cutting structure
Backreaming feature
Return to DrillShoe II
©2003 Weatherford.All rights reserved.
Specifications
Weatherford is continuously improving DwC™ technology and introducing new product variations. Please contact us for the latest information.
Introduction Rotating the Casing
DrillShoe™ II DS2-095105 9 5/8” x 10 5/8”
DrillShoe I DrillShoe II DrillShoe III XpandaBit ©2003 Weatherford.All rights reserved.
Specifications
DrillShoe II Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Rotating the Casing
9 5/8” x 10 5/8”
Introduction
SPECIFICATION
DrillShoe II DS2-095105
GENERAL DATA 10 5/8” (270mm) 9 5/8” (244.5mm) as per PO as per PO to API 5CT to API 5CT 2.20ft (671mm) 193lb (88kg) 223lb (101kg)
DrillShoe I
OD Casing Size Connection Casing Weight Casing ID Casing Drift Length Tool Weight Shipping Weight
TECHNICAL DATA 3 6 240 off 3mm Thermally Stable Diamond Cubes 20 off 9mm Premium Quality PDC Discs 8” (200mm) ‘QuickTip’ Tungsten Carbide Brickettes As per nozzle selection 11.1in² (72cm²)
DrillShoe II
Number of Blades Number of Nozzles Cutting Structure (on Nose) Cutting Structure (on Body) Gauge Length Gauge Protection TFA Junk Slot Area
RECOMMENDED OPERATING PARAMETERS
DrillShoe III
WOB Torque Rotary Speed Maximum Flow Rate Maximum Pressure Drop HSI
25,000lb (11.3 tonnes) 12,000ft/lb (17,000Nm) 30-100rpm 1,200gpm (4,400 l/min) 1200psi 9.48
DRILLSHOE STRENGTH LIMITS
XpandaBit
Ultimate Compressive Load* Ultimate Tensilte Load* Torque to Failure*
>210,000lb (>139 tonnes) >450,000lb (>290 tonnes) >45,000ft/lb (>60,000Nm)
*These are tool body ratings, depending on style, string connections may be weaker
MATERIALS
DrillShoe II Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
AISI4145 (110ksi yield/135ksi UTS) Aluminium Alloy
©2003 Weatherford.All rights reserved.
Specifications
Body Material Nose Material
Introduction Rotating the Casing
DrillShoe™ II DS2-095122 9 5/8” x 12 1/4”
DrillShoe I DrillShoe II DrillShoe III XpandaBit ©2003 Weatherford.All rights reserved.
Specifications
DrillShoe II Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Rotating the Casing
9 5/8” x 12 1/4”
Introduction
SPECIFICATION
DrillShoe II DS2-095122
GENERAL DATA 12¼” (311mm) 9 5/8” (244mm) as per PO as per PO to API 5CT to API 5CT 2.12ft (645mm) 205lb (93kg) 258lb (117kg)
DrillShoe I
OD Casing Size Connection Casing Weight Casing ID Casing Drift Length Tool Weight Shipping Weight
TECHNICAL DATA 3 6 6mm Thermally Stable Diamond Discs 18 off 13mm Premium Quality PDC Discs 6.5” (166mm) ‘QuickTip’ Tungsten Carbide Brickettes As per nozzle selection 25.4in² (164cm²)
DrillShoe II
Number of Blades Number of Nozzles Cutting Structure (on Nose) Cutting Structure (on Body) Gauge Length Gauge Protection TFA Junk Slot Area
RECOMMENDED OPERATING PARAMETERS
DrillShoe III
WOB Torque Rotary Speed Maximum Flow Rate Maximum Pressure Drop HSI
15,000lb (7 tonnes) 10,000ft/lb (14,000Nm) 40-150rpm 900 gpm (3,300l/min) 1200 psi 3.5
DRILLSHOE STRENGTH LIMITS
XpandaBit
Ultimate Compressive Load* Ultimate Tensilte Load* Torque to Failure*
>440,000lb (>200 tonnes) >1,000,000lb (>440 tonnes) >30,000ft/lb (>40,000Nm)
*These are tool body ratings, depending on style, string connections may be weaker
MATERIALS 72ksi yield/95ksi UTS Aluminium Alloy
DrillShoe II Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
©2003 Weatherford.All rights reserved.
Specifications
Body Material Nose Material
Introduction Rotating the Casing
DrillShoe™ II DS2-133170 13 3/8” x 17”
DrillShoe I DrillShoe II DrillShoe III XpandaBit ©2003 Weatherford.All rights reserved.
Specifications
DrillShoe II Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Rotating the Casing
13 3/8” x 17”
Introduction
SPECIFICATION
DrillShoe II DS2-133170
GENERAL DATA 17” (432mm) 13 3/8” (340mm) as per PO as per PO to API 5CT to API 5CT 2.31ft (705mm) 425lb (193kg) 512lb (233kg)
DrillShoe I
OD Casing Size Connection Casing Weight Casing ID Casing Drift Length Tool Weight Shipping Weight
TECHNICAL DATA 3 6 6mm Thermally Stable Diamond Discs 18 off 13mm Premium Quality PDC Discs 12” (305mm) ‘QuickTip’ Tungsten Carbide Brickettes As per nozzle selection 50.5in² (326cm²)
DrillShoe II
Number of Blades Number of Nozzles Cutting Structure (on Nose) Cutting Structure (on Body) Gauge Length Gauge Protection TFA Junk Slot Area
RECOMMENDED OPERATING PARAMETERS
DrillShoe III
WOB Torque Rotary Speed Maximum Flow Rate Maximum Pressure Drop
20,000lb (9 tonnes) 12,000ft/lb (17,000Nm) 20-100rpm 1200 gpm 1200 psi
DRILLSHOE STRENGTH LIMITS
XpandaBit
Ultimate Compressive Load* Ultimate Tensilte Load* Torque to Failure*
>450,000lb (>204 tonnes) >1,020,000lb (>461 tonnes) >45,000ft/lb (>60,000Nm)
*These are tool body ratings, depending on style, string connections may be weaker
MATERIALS
DrillShoe II Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Steel (80ksi yield/95ksi UTS) Aluminium Alloy
©2003 Weatherford.All rights reserved.
Specifications
Body Material Nose Material
Introduction Rotating the Casing
DrillShoe™ II - Case History INDONESIA: First DrillShoe II Run Casing String Distance Drilled On Bottom Average ROP
13 3/8” Surface Casing 458 ft 1.7 hrs 322 ft/hr
•
Running Parameters
WOB RPM Torque Flow
DrillShoe I
• • • •
DrillShoe II
2-15 klbs 20-75 2.5-4.5 kftlb 870 gpm
DrillShoe III
Drilled stringers at 30-50ft/hr. Drilled out with Roller Cone Bit.
XpandaBit ©2003 Weatherford.All rights reserved.
Specifications
DrillShoe II Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Introduction Rotating the Casing
DrillShoe™ II - Case History AUSTRALIA: First Liner Run Casing String Distance Drilled
7” Liner x 8½” Hole 179m (587ft)
•
Running Parameters
Flow
DrillShoe I
• •
DrillShoe II
105-150 gpm
Two 100m cement plugs were set to stabilise the well. DrillShoe III
Cement plugs were drilled successfully. The DrillShoe tool stayed on track in the pre-drilled hole.
XpandaBit
Reamed 640m (2100ft) unstable hole to get Liner to bottom @ 3090m Drilled out with 6” BB457 PDC bit.
©2003 Weatherford.All rights reserved.
Specifications
DrillShoe II Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Introduction Rotating the Casing
DrillShoe™ II - Case History USA 13 3/8” Surface Casing 729 ft 17 hrs 43 ft/hr up to 450ft/hr in Sand
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