Drill Shoe by Weatherford

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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
<less 10fthr thru’ Gumbo



Running Parameters

WOB
RPM
Torque
Flow
TFA
PD
HSI

DrillShoe II

Casing String
Distance Drilled
On Bottom Time
Average ROP

DrillShoe I






DrillShoe III

2-15 klbs
50-60
2-3 kftlb
930 gpm
1.18in³
465 psi
1.1 hhp/in³

XpandaBit

Drilled out with Smith Roller
Cone bit.
This run initiated design
modifications to improve ROP.

©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
Casing String
Distance Drilled
On-bottom time
ROP

13 3/8” Surface Casing
575 ft
5.1 ft
113 ft/hr



Running Parameters

WOB
RPM
Torque
Flow
TFA
PD
HSI

DrillShoe I






DrillShoe II

0-10 klbs
40-60
0-4 kftlb
670 gpm
0.78 in²
560 psi
1.0 hhp/in²

DrillShoe III

Third run in GOM.
XpandaBit

New design improved ROP thru
Gumbo.

©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
20” #94 Buttress
24”

-

156 ft (4 joints)
1-3 klb
20-40
800-1000gpm
1-5 kftlb (spikes up to 10 kftlb)

Footage
WOB
RPM
Flow Rate
Torque

DrillShoe II

Casing Size
DrillShoe OD

DrillShoe I




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

Introduction
Rotating the
Casing

DrillShoe™ II - Case History
INDONESIA
Casing String
Distance Drilled
On-bottom time
ROP

13 3/8” Surface Casing
821 ft
2.0 ft
410 ft/hr



Running Parameters

WOB
RPM
Flow
TFA
PD
HSI

DrillShoe I






DrillShoe II

8 klbs
32-55
560-930 gpm
0.78 in²
390-1100 psi
0.6-2.6 hhp/in²

DrillShoe III

Very fast run with wave profile.
XpandaBit

Slow connection times with
water bushing.

©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
INDONESIA
7” #26 Buttress
8½”
Indonesia

-

1121 ft
9.5
118 ft/hr

Footage
Hours
ROP

DrillShoe II

Casing Size
DrillShoe OD
Location

DrillShoe I





DrillShoe III

DrillShoe thru’ a DrillShoe™

©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

XpandaBit

New cutting structure drilled up the
shoetrack and out thru’ a 9 5/8”
DrillShoe tool in 2 hours, before
going onto drill 1121ft of formation
before casing was set.

Introduction
Rotating the
Casing

DrillShoe™ II - Case History
China - World’s longest rotary DwC run











Footage
WOB
RPM
Flow Rate
Hours
Torque
ROP
Pressure Drop
Hyd. Power

1666 ft (508m)
4-10 klb (2-5 tonne)
50-70
560 gpm (2550 l/min)
15.5
3300 ftlb (4.5 kNm)
108 ft/hr (33 m/hr)
107 psi
0.16 HHP

DrillShoe III

13 3/8” #68 Butt
17”
Seawater

DrillShoe II

Casing
DrillShoe OD
Drilling Fluid

DrillShoe I





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™ III
As a natural progression to Weatherford’s revolutionary DrillShoe
product line the displaceable DrillShoe III was developed.

DrillShoe I

Rotary Drilling with Casing (DwC™) has proven to provide operators
significant savings on both time and money in many applications. To
expand the horizons that DwC will encompass, there was a need to be
able to drill more competent formations than where previously
possible with DrillShoe I and II.

DrillShoe II

The design criteria was to develop a DrillShoe tool that would perform
like a conventional PDC drill bit, and also have the ability to be drilled
out with a PDC cutting structure.

DrillShoe III

This was achieved by placing a PDC cutting structure over a
pressure-cycled aluminium “piston”.

XpandaBit
©2003 Weatherford.All rights reserved.

Specifications

DrillShoe III Page 1 2 3

Introduction

A simple pressure cycle results in the cutting structure being displaced into the annulus and leaves the casing ready for cementation.
Drilling can then resume using a conventional PDC or another DrillShoe assembly.
PICK UP OFF BOTTOM
DROP AND LAND BALL

APPLY PRESSURE AND AT
1500psi PISTON BEGINS TO MOVE
DOWNWARDS AND LOCKS OUT,
EXPOSING CEMENTING PORTS.

DrillShoe I

DRILL TO TD

Rotating the
Casing

DrillShoe™ III

DrillShoe II
DrillShoe III
XpandaBit
©2003 Weatherford.All rights reserved.

Specifications

DrillShoe III Page 1 2 3

Introduction
Rotating the
Casing

DrillShoe™ III

DrillShoe I
DrillShoe II

Click her
heree to enter DrillShoe III Animation

DrillShoe III
XpandaBit

DrillShoe III Page 1 2 3

©2003 Weatherford.All rights reserved.

Specifications

The DrillShoe III animation will run better if all files on CD have been saved onto the hard drive
Press ESC at any time to quit animation

Introduction
Rotating the
Casing

XpandaBit™ System
INNOVATION LEADS
TO EXPANSION

DrillShoe I

Designed to overcome both reliability and capacity
problems the XpandaBit System is a mechanical
device, incorporating as many features of a standard
PDC drill bit as possible whilst drilling a 40% enlarged
hole size.

DrillShoe II

Its performance characteristics are designed to mirror the
existing BBL PDC bit range, as regards ROP, steerability,
and longevity.

Slimhole Construction Programs
Drilling Unstable Formations
Drilling With Casing
Under Reaming
Constructing Oversize Wellbores for
Expandable Tubulars

©2003 Weatherford.All rights reserved.

Specifications

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

XpandaBit







DrillShoe III

APPLICATIONS FOR THE
XpandaBit System
ARE NUMEROUS

Introduction
Rotating the
Casing

STEP CHANGE TECHNOLOGY
The XpandaBit™ System has been conceived after analysing
various customer requirements to drill “oversize” wellbores.

DrillShoe I

Oversize wellbore construction is required in order to overcome formation related
problems such as swelling shales, or shifting salts, as well as accommodating the
need for ‘slimhole’ construction or casing program optimisation.

DrillShoe II

A means of drilling wellbores up to 40% larger in diameter than the “pass through” size
of the last casing string has now become an industry requirement.

DrillShoe III

Traditional tools for this job have been “hole opener” devices and bi-centre drill bits.
Both of these systems have limitations. Whilst the reliability of hole openers has never
met expectations, most bi-centre products are designed to drill only 20-25% larger
wellbores.
Once the bit has drilled the required section length (with the 40% enlarged wellbore)
the bit will collapse back down to its original size for recovery, through the restricting
“pass through” diameter, back to surface.

XpandaBit

Future designs will be capable of drilling out the shoetrack.

The Xpandabit System is one example of Weatherford’s “step-change” innovations in drill bit technology.

©2003 Weatherford.All rights reserved.

Specifications

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

Introduction
Rotating the
Casing

OPERATION
• The XpandaBit™ System comprises of a body (head) having four or more arms (blades).

DrillShoe I

• These arms are hinged and are attached to the internal pivot housing to provide a split crown
profile.
• Displacement of the outer cylinder by hydraulic pressure causes the blades to
move between the open and closed positions. An internal compression spring returns the
tool to the standby closed position when pressure is removed and weight not applied.

DrillShoe II

• The tool is hydraulically actuated, due to a pressure drop created by throttling the flow
of drilling fluid by nozzles in the crown of the bit.
• Applying weight to the tool tends to expand the blades, but is not the principle
operating feature.

DrillShoe III

• This will ensure that the bit drills the intended oversize diameter at all times when the bit is
expanded.
• Fail safe blade closure when pulling out of hole.

XpandaBit

• The blades are constrained within the slots in the crown for greater rigidity. Guide
pins located in slots machined in the blades ensure that the blades return to the
closed position when circulation stops.

©2003 Weatherford.All rights reserved.

Specifications

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

Introduction
Rotating the
Casing

XpandaBit™ FEATURES

• Four bladed medium taper.
DrillShoe I

• 47 x 19mm Round Face Cutters.
• Total Cutter Count of 51.

DrillShoe II

• 8 x Series 75 (max 28/32).

DrillShoe III

• Optimum Nozzle Placement
Ensures Full Blade Cleaning.
• Junk Slot Area 26in² - collapsed,
82in² - expanded.

XpandaBit

• 7 5/8” Regular Pin Connection.
• Make Up Torque 40Klbs.

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

©2003 Weatherford.All rights reserved.

Specifications

• WOB 4,000lbs to 30,000lbs, Max 40,000lbs.

8 3/8" TO 12¼" (213mm TO 311mm)

BIT TYPE

4 BLADED EXPANDABLE - MEDIUM TAPER

IADC CODE

S615

DOWNWARD NOZZLES

8

TYPE OF MANUFACTURE

MACHINED FORGINGS

METALLURGY

CORROSION RESISTANT ALLOYS

MAKE UP LENGTH

OPEN 38.3in (974mm), CLOSED 40.3in (1024mm)

OVERALL LENGTH

42.6in (1082mm)

GAUGE LENGTH

2.5in (63.5mm)

JUNK SLOT AREA

OPEN 49in² (31892mm²), CLOSED 1.2in² (768mm²)
178in³ (292,000mm³)
4½" REGULAR

FISHING NECK O.D.

7.5in (190mm)
7.5in (190mm)
550lbs (250kg)

RE-RUN POTENTIAL

FULLY RECONDITIONABLE

SHAPE OF CUTTERS

ROUND

SIZE OF CUTTERS

16mm & 13mm

DrillShoe II

FISHING NECK LENGTH
SHIPPING WEIGHT

DrillShoe I

OPEN FACE VOLUME
PIN CONNECTION

Rotating the
Casing

XpandaBit™
SPECIFICATIONS
83/8” - 12¼”
EXP420

SIZE

Introduction

GEN ER AL D ATA

CUTTER DETAILS

36

TOTAL CUTTERS AND TRIMMERS

20

FACE CUTTER MOUNT

CYLINDER

GAUGE PROTECTION

TSP & TC BLOCKS

DrillShoe III

NUMBER OF FACE CUTTERS

OPERATING PARAMETERS
20,000lbs (27kNm)

TOTAL FLOW AREA

0.61 TO 2.45in² (394 TO 1580mm²)

CIRCULATION RATE

350 TO 800gpm (1350 TO 3030l/min)

PRESSURE DROP ACROSS BIT

UP TO 1500psi (UP TO 103bar) (UP TO 10345kPa)

ROTARY TABLE

60 TO 220 rpm

DOWNHOLE MOTOR

200 TO 600 rpm
UP TO 1000 rpm
2,000 TO 20,000lbs (1.0 TO 9.0TONNES) (888 TO 8880daN)

MAXIMUM WEIGHT ON BIT

35,000lbs (16 TONNES) (15540daN)

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

©2003 Weatherford.All rights reserved.

Specifications

TURBINE
WEIGHT ON BIT

XpandaBit

MAKE UP TORQUE

8 3/8" TO 12¼" (213mm TO 311mm)

BIT TYPE

4 BLADED EXPANDABLE - MEDIUM TAPER

IADC CODE

S615

DOWNWARD NOZZLES

8

TYPE OF MANUFACTURE

MACHINED FORGINGS

METALLURGY

CORROSION RESISTANT ALLOYS

MAKE UP LENGTH

OPEN 38.3in (974mm), CLOSED 40.3in (1024mm)

GAUGE LENGTH

2.5in (63.5mm)
OPEN 49in² (31892mm²), CLOSED 1.2in² (768mm²)
178in³ (292,000mm³)

PIN CONNECTION

4½" REGULAR

FISHING NECK O.D.

7.5in (190mm)

FISHING NECK LENGTH

7.5in (190mm)

SHIPPING WEIGHT

550lbs (250kg)

RE-RUN POTENTIAL

FULLY RECONDITIONABLE

DrillShoe I

JUNK SLOT AREA
OPEN FACE VOLUME

Rotating the
Casing

XpandaBit™
SPECIFICATIONS
83/8” - 12¼”
EXP450

SIZE

Introduction

GEN ER AL D ATA

OVAL & ROUND
19mm x 13mm & 13mm

NUMBER OF FACE CUTTERS

43

TOTAL CUTTERS AND TRIMMERS

4

FACE CUTTER MOUNT

CYLINDER

GAUGE PROTECTION

TSP & TC BLOCKS

DrillShoe III

SHAPE OF CUTTERS
SIZE OF CUTTERS

DrillShoe II

CUTTER DETAILS

OPERATING PARAMETERS
MAKE UP TORQUE

20,000lbs (27kNm)
0.61 TO 2.45in² (394 TO 1580mm²)
350 TO 800gpm (1350 TO 3030l/min)

PRESSURE DROP ACROSS BIT

UP TO 1500psi (UP TO 103bar) (UP TO 10345kPa)

ROTARY TABLE

60 TO 220 rpm
200 TO 600 rpm

TURBINE

UP TO 1000 rpm

WEIGHT ON BIT

2,000 TO 20,000lbs (1.0 TO 9.0TONNES) (888 TO 8880daN)

MAXIMUM WEIGHT ON BIT

35,000lbs (16 TONNES) (15540daN)

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

©2003 Weatherford.All rights reserved.

Specifications

DOWNHOLE MOTOR

XpandaBit

TOTAL FLOW AREA
CIRCULATION RATE

8 3/8" TO 12¼" (213mm TO 311mm)

BIT TYPE

4 BLADED EXPANDABLE - MEDIUM TAPER

IADC CODE

S615

DOWNWARD NOZZLES

8

TYPE OF MANUFACTURE

MACHINED FORGINGS

METALLURGY

CORROSION RESISTANT ALLOYS

MAKE UP LENGTH

OPEN 38.3in (974mm), CLOSED 40.3in (1024mm)

GAUGE LENGTH

2.5in (63.5mm)
OPEN 49in² (31892mm²), CLOSED 1.2in² (768mm²)
178in³ (292,000mm³)

PIN CONNECTION

4½" REGULAR

FISHING NECK O.D.

7.5in (190mm)

FISHING NECK LENGTH

7.5in (190mm)

SHIPPING WEIGHT

550lbs (250kg)

RE-RUN POTENTIAL

FULLY RECONDITIONABLE

DrillShoe I

JUNK SLOT AREA
OPEN FACE VOLUME

Rotating the
Casing

XpandaBit™
SPECIFICATIONS
83/8” - 12¼”
EXP470

SIZE

Introduction

GEN ER AL D ATA

ROUND
13mm

NUMBER OF FACE CUTTERS

43

TOTAL CUTTERS AND TRIMMERS

4

FACE CUTTER MOUNT

CYLINDER

GAUGE PROTECTION

TSP & TC BLOCKS

DrillShoe III

SHAPE OF CUTTERS
SIZE OF CUTTERS

DrillShoe II

CUTTER DETAILS

OPERATING PARAMETERS
MAKE UP TORQUE

20,000lbs (27kNm)
0.61 TO 2.45in² (394 TO 1580mm²)
350 TO 800gpm (1350 TO 3030l/min)

PRESSURE DROP ACROSS BIT

UP TO 1500psi (UP TO 103bar) (UP TO 10345kPa)

ROTARY TABLE

60 TO 220 rpm
200 TO 600 rpm

TURBINE

UP TO 1000 rpm

WEIGHT ON BIT

2,000 TO 20,000lbs (1.0 TO 9.0TONNES) (888 TO 8880daN)

MAXIMUM WEIGHT ON BIT

35,000lbs (16 TONNES) (15540daN)

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

©2003 Weatherford.All rights reserved.

Specifications

DOWNHOLE MOTOR

XpandaBit

TOTAL FLOW AREA
CIRCULATION RATE

SIZE

12¼" - 14¾" (311mm - 375mm)

BIT TYPE

4 BLADED EXPANDABLE - MEDIUM TAPER

IADC CODE

O614

DOWNWARD NOZZLES

8

TYPE OF MANUFACTURE

MACHINED FORGINGS

METALLURGY

CORROSION RESISTANT ALLOYS

MAKE UP LENGTH

OPEN 44.5in (1131mm), CLOSED 47.0in (1196mm)

GAUGE LENGTH

3.2in (81mm)

JUNK SLOT AREA

OPEN 45.8in³ (29550mm³), CLOSED 6.5in³ (4194mm³)
6 5/8" REGULAR
8.86in (225mm)

FISHING NECK LENGTH

7.3in (187mm)

SHIPPING WEIGHT

895lbs (406kg)

RE-RUN POTENTIAL

FULLY RECONDITIONABLE

DrillShoe I

PIN CONNECTION
FISHING NECK O.D.

Rotating the
Casing

XpandaBit™
SPECIFICATIONS
12¼” - 14¾”
EXP440

Introduction

GEN ER AL D ATA

SHAPE OF CUTTERS

ROUND

SIZE OF CUTTERS

19mm
36

TOTAL CUTTERS AND TRIMMERS

65

FACE CUTTER MOUNT

CYLINDER

GAUGE PROTECTION

TSP

DrillShoe III

NUMBER OF FACE CUTTERS

DrillShoe II

CUTTER DETAILS

OPERATING PARAMETERS
MAKE UP TORQUE

32,000ftlbs (61kNm)

TOTAL FLOW AREA

0.46 TO 4.8in² (297 TO 3097mm²)

ROTARY TABLE

60 TO 220 rpm

DOWNHOLE MOTOR

200 TO 600 rpm

TURBINE

UP TO 1000 rpm

WEIGHT ON BIT

2,000 TO 25,000lbs (1.0 TO 11.0TONNES) (888 TO 1124daN)

MAXIMUM WEIGHT ON BIT

30,000lbs (14 TONNES) (13349daN)

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

©2003 Weatherford.All rights reserved.

Specifications

500 TO 1600gpm (1893 TO 6050l/min)
UP TO 1500psi (UP TO 103bar) (UP TO 10345kPa)

XpandaBit

CIRCULATION RATE
PRESSURE DROP ACROSS BIT

SIZE

12¼" - 17"

BIT TYPE

4 BLADED EXPANDABLE - MEDIUM TAPER

IADC CODE

O614

DOWNWARD NOZZLES

8

TYPE OF MANUFACTURE

MACHINED FORGINGS

METALLURGY

CORROSION RESISTANT ALLOYS

MAKE UP LENGTH

OPEN 44.5in (1131mm), CLOSED 47.0in (1196mm)

GAUGE LENGTH

3.2in (81mm)

JUNK SLOT AREA

OPEN 89.3in² (57613mm²), CLOSED 6.5in² (4194mm²)
6 5/8" REGULAR
8.86in (225mm)

FISHING NECK LENGTH

7.3in (187mm)

SHIPPING WEIGHT

895lbs (406kg)

RE-RUN POTENTIAL

FULLY RECONDITIONABLE

DrillShoe I

PIN CONNECTION
FISHING NECK O.D.

Rotating the
Casing

XpandaBit™
SPECIFICATIONS
12¼” - 17”
EXP440

Introduction

GEN ER AL D ATA

SHAPE OF CUTTERS

ROUND

SIZE OF CUTTERS

19mm
42

TOTAL CUTTERS AND TRIMMERS

66

FACE CUTTER MOUNT

CYLINDER

GAUGE PROTECTION

TSP

DrillShoe III

NUMBER OF FACE CUTTERS

DrillShoe II

CUTTER DETAILS

OPERATING PARAMETERS
MAKE UP TORQUE

32,000lbs (61kNm)

TOTAL FLOW AREA

0.46 TO 4.8in² (297 TO 3097mm²)

ROTARY TABLE

60 TO 220 rpm

DOWNHOLE MOTOR

200 TO 600 rpm

TURBINE

UP TO 1000 rpm

WEIGHT ON BIT

2,000 TO 25,000lbs (1.0 TO 11.3 TONNES) (890 TO 11124daN)

MAXIMUM WEIGHT ON BIT

30,000lbs (13.6 TONNES) (13349daN)

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

©2003 Weatherford.All rights reserved.

Specifications

500 TO 1600gpm (1893 TO 6050l/min)
UP TO 1500psi (UP TO 103bar) (UP TO 10340kPa)

XpandaBit

CIRCULATION RATE
PRESSURE DROP ACROSS BIT

Introduction
Rotating the
Casing

XpandaBit™ CASE HISTORY

DrillShoe I
DrillShoe II

Indonesia
Attaka L-32HZ
362ft (110m)
0.62hr (on bottom)
6.2 - 6.8 klb
210 (motor & rotary)
584ft/hr (177m/hr)
Normal ROP in this area was 350ft/hr.
Excellent performance

XpandaBit
©2003 Weatherford.All rights reserved.

Specifications

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

DrillShoe III

Location
Well
Footage
Hours
WOB
RPM
On-bottom ROP
Comments

Introduction
Rotating the
Casing

XpandaBit™ CASE HISTORY

DrillShoe I
DrillShoe II

Indonesia
Attaka West AW1
729ft (222m)
1.55hr
1 - 4 klb (0.5 - 2 tonnes)
250 (motor & rotary)
820 - 1000gpm (seawater)
470ft/hr (143m/hr)
643ft/hr (196m/hr)
Performed as expected

XpandaBit
©2003 Weatherford.All rights reserved.

Specifications

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

DrillShoe III

Location
Well
Footage
Hours
WOB
RPM
Flow Rate
IADC ROP
On-bottom ROP
Comments

Introduction
Rotating the
Casing

XpandaBit™ System
FULLY COLLAPSED

DrillShoe I

Figure 1 Illustrates an expandable bit
in the closed position. In this position
the bit is capable of drilling float and
shoe equipment.

DrillShoe II

PARTIALLY OPEN

DrillShoe III

Figure 2 Illustrates the movement of
the outer cylinder upon application of
hydraulic pressure operating the
hinged arms to the open position.

XpandaBit

FULLY EXPANDED
Figure 3 Illustrates full expansion. The
drilling load applied to the bit is taken
entirely through the inner mandrel.

©2003 Weatherford.All rights reserved.

Specifications

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

Introduction
Rotating the
Casing

XpandaBit™ System

DrillShoe I
DrillShoe II

Click her
heree to enter XpandaBit System Animation

DrillShoe III
XpandaBit
©2003 Weatherford.All rights reserved.

Specifications

XpandaBit Page 1 2 3 4 5 6 7 8 9 10 11 12 13

Introduction

3

4

5

6

7

1

8

2

5.56

24.25

48.49

0.3927

6.35

31.67

0.4970

7.14

40.08

0.0376

0.0752

0.1127

0.1503

0.1879

0.2255

0.2631

0.3007

8

0.0491

0.0982

0.1473

0.1964

0.2454

0.2945

0.3436

9

0.0621

0.1243

0.1864

0.2485

0.3106

0.3728

0.4349

3

4

5

6

72.74

96.99

121.23

145.48

63.34

95.01

126.68

158.35

80.16

120.24

160.33

200.41

7

8

169.73

193.97

190.02

221.69

253.35

240.49

280.57

320.65

0.0767

0.1534

0.2301

0.3068

0.3835

0.4602

0.5369

0.6136

7.94

49.48

98.97

148.45

197.93

247.42

296.90

346.38

395.87

11

0.0928

0.1856

0.2784

0.3712

0.4640

0.5568

0.6496

0.7424

8.73

59.87

119.75

179.62

239.50

299.37

359.25

419.12

479.00

12

0.1104

0.2209

0.3313

0.4418

0.5522

0.6627

0.7731

0.8836

13

0.1296

0.2592

0.3889

0.5185

0.6481

0.7777

0.9074

1.0370

9.53

71.26

142.51

213.77

285.02

356.28

427.54

498.79

570.05

10.32

83.63

167.25

250.88

334.51

418.13

501.76

585.39

669.01

11.11

96.99

193.97

290.96

387.95

484.94

581.92

678.91

775.90

11.91

111.34

222.67

334.01

445.35

556.69

668.02

779.36

890.70

12.70

126.68

253.35

380.03

506.71

633.39

760.06

886.74 1013.42

14.29

160.33

320.65

480.98

641.30

801.63

961.95 1122.28 1282.61

15.88

197.93

395.87

593.80

791.73

989.67 1187.60 1385.53 1583.46

958.00 1197.50 1436.99 1676.49 1915.99

14

0.1503

0.3007

0.4510

0.6013

0.7517

0.9020

1.0523

1.2026

15

0.1726

0.3451

0.5177

0.6903

0.8629

1.0354

1.2080

1.3806

16

0.1964

0.3927

0.5891

0.7854

0.9818

1.1781

1.3745

1.5708

18

0.2485

0.4970

0.7455

0.9940

1.2425

1.4910

1.7395

1.9880

20

0.3068

0.6136

0.9204

1.2272

1.5340

1.8408

2.1476

2.4544

22

0.3712

0.7424

1.1137

1.4849

1.8561

2.2273

2.5986

2.9698

17.46

239.50

479.00

718.50

24

0.4418

0.8836

1.3254

1.7672

2.2089

2.6507

3.0925

3.5343

19.05

285.02

570.05

855.07 1140.09 1425.12 1710.14 1995.17 2280.19

26

0.5185

1.0370

1.5555

2.0739

2.5924

3.1109

3.6294

4.1479

20.64

334.51

669.01 1003.52 1338.03 1672.53 2007.04 2341.55 2676.06

28

0.6013

1.2026

1.8040

2.4053

3.0066

3.6079

4.2093

4.8106

22.23

387.95

775.90 1163.85 1551.80 1939.74 2327.68 2715.64 3103.59

DrillShoe III

NOZZLE SIZE IN mm

10

DrillShoe II

NOZZLE SIZE IN 32nds

2

7

DrillShoe I

1

Rotating the
Casing

TECHNICAL DATA

XpandaBit
©2003 Weatherford.All rights reserved.

Specifications

Specifications Page 1 2 3

Introduction
Rotating the
Casing

TECHNICAL DATA
US E F UL CO NVE R S IO N FA CTO R S
TO OB TAIN

LENGTH

Feet
Metres

0.3048
3.2808

Metres
Feet

MUD WEIGHT

kg/m³
lb/gal

0.00835
119.83

lb/gal
kg/m³

PRESSURE

psi
bars
psi
kPa

0.0689
14.504
6.895
0.145

bars
psi
kPa
psi

FLOW RATE

gal/min
litres/min

3.785
0.264

litres/min
gal/min

POWER

KW (kilowatts)
Hp

1.341
0.746

Hp
KW

TORQUE

Nm
ft/lbs

0.7376
1.3558

ft/lbs
Nm

DrillShoe III

BY

DrillShoe II

MU LTIPLY

DrillShoe I

PR OPER TY

XpandaBit
©2003 Weatherford.All rights reserved.

Specifications

Specifications Page 1 2 3

Introduction

DrillShoe™ System
C asing Siz e
(in)

Tool OD
(in)

C asing Siz e
(mm)

Tool OD
(mm)

N oz z les

TFA R ange
(in²)

Flow -B y Area
(in²)

D S1-095120

95/8"

12"

244

305

3

0.23 - 1.56

22.07

D S1-133170

133/8"

17"

340

432

6

0.46 - 3.11

49.40

185/8"

21"

473

533

6

0.46 - 3.11

39.08

185/8"

24"

473

610

9

0.69 - 4.67

76.95

D S1-200240

20"

24"

508

610

9

0.69 - 4.67

78.85

D S2-044061

4½"

61/8"

114

156

3

0.23 - 1.56

7.43

D S2-050061

5"

61/8"

127

156

3

0.23 - 1.56

4.01

D S2-054077

5½"

77/8"

140

200

3

0.23 - 1.56

13.90

D S2-070084

7"

8½"

178

216

3

0.23 - 1.56

7.57

D S2-075084

75/8"

8½"

194

216

3

0.23 - 1.56

7.00

D S2-095105-S1

95/8"

105/8"

244

270

4

0.31 - 2.07

11.18

95/8"

12"

244

305

3

0.23 - 1.56

23.50

D S2-095122

95/8"

12¼"

244

311

3

0.23 - 1.56

23.15

D S2-097105-S1

97/8"

105/8"

251

270

4

0.31 - 2.07

10.83

D S2-133170

133/8"

17"

340

432

6

0.46 - 3.11

49.14

D S2-133172

133/8"

17¼"

340

438

6

0.46 - 3.11

54.37

D S2-133174

133/8"

17½"

340

444

6

0.46 - 3.11

59.71

D S2-160194

16"

19½"

406

495

6

0.46 - 3.11

50.18

D S2-200260

20"

26"

660

9

0.69 - 4.67

147.13

508
D S1 = C arbide

DrillShoe II

D S2-095120

DrillShoe I

D S1-185210
D S1-185240

Rotating the
Casing

Tool Style

D S2 - TSP D iamond

DrillShoe III
XpandaBit

OTHER PRODUCTS OFFERED
Lateral Jet™ PDC Bits - High performance drill bits
SlickSleeve™ - Torque and Drag reduction systems
ReamerShoe™ - Casing guide and reaming tools
DiamondBlade™ Stabilizer - long life stabilizer
GaugeAlert™ - Drill Bit gauge wear indicator

©2003 Weatherford.All rights reserved.

Specifications

Specifications Page 1 2 3

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