Transcript Document

A Noble Drilling
Corporation Subsidiary
Coiled-Tubing High Pressure
Jet Drilling System
April 19, 2001
Dr. William C. Maurer
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Exxon HP Field Test
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Exxon Jet
Bit
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Exxon HP Field Test
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Exxon High Pressure Drill Rig
HP Rotary Hose
HP Pump
HP Line
HP Seal
Tool-Joint
Seal
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HP Swivel
High Strength
Drill Pipe
HP Bit
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Comparison of Drilling Methods
Drilling Rate (ft/hr)
1200
1000
800
600
400
200
0
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Conventional
Drilling
Rotary
Motor
Motor/Jet Bit
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High Pressure CT Drilling System
(Single Flow)
CT Reel
Injector Head
LP & HP Pumps
Conventional
Coiled Tubing
HP Flow
Single Flow HP Motor
(Solid Rotor)
Single-Flow HP Bit
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Project Participants
Maurer Engineering - Motors and
Bits
 Quality Tubing - HP Coiled Tubing
 Stewart & Stevenson - CT Rig
 BJ Services - Field Operations
 Marathon - Operator Requirements
 ARCO - Operator Requirements

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A Noble Drilling
Corporation Subsidiary
HP Motor Design
Curtis Leitko
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High Pressure CT Motor (Single Flow)
Titanium Drive Shaft
PDC Thrust Bearings
2 3/8” CT
PDM Multilobe
Rotor/Stator (3 1/8”)
Solid Rotor
High Pressure Radial Bearings/
Jet Bit
Flow Restrictors
Solid Titanium
Flexshaft
Titanium
Flexshaft
Filter
High Pressure
Low Pressure
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Thrust Load on Bearing
10,000 PSI
Seal
Housing
34,000 lb
Force
Thrust Bearing
Bit
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Candidate Bearings
Ball Bearing
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PDC Bearing
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Bearing Load Comparison
20000
100 Hours @ 300 rpm
16,800
Load Capacity
15000
10000
5600
5000
0
Ball Bearing
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PDC Bearing
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Motor Labyrinth Seals
}
5”
Housing
Fluid
Flow
5”
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Upper Restrictor
Shaft
Lower Restrictor
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Motor Labyrinth Leakage
16
Flow Rate (gpm)
14
Four 5” Labyrinths
10,000 psi
w
12.1
12
10
8
8.1
6
4
2
0
0.004"
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Leakage Clearance (w)
0.006"
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Advanced Geothermal Turbodrill (AGT)
Bearing Pack
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Speed Reducer
Turbine
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Planetary Gears
Sun Gear
Planet Gears
Ring Gear
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Turbodrill Performance
7500
With Gear Box
Without Gear Box
1100
900
85
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Rotary Speed
Torque
(RPM)
(ft-lbs)
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HP Bit Design
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High Pressure Jet Bit
High Pressure Jets
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A Noble Drilling
Corporation Subsidiary
HP Coiled-Tubing Design
John H. Cohen
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Coiled Tubing Burst Pressure
(100,000 psi yield)
CT Diameter (in.)
Wall Thk. (in.)
Burst Pressure (psi)
1.00
0.109
20,800
1.25
0.156
24,160
1.50
0.175
22,670
1.75
0.188
20,910
2.00
0.203
19,800
2.375
0.203
16,670
2.875
0.203
13,770
3.500
0.203
11,310
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CT FATIGUE LIFE
Fatigue Life (trips)
200
(based on MEI CTLIFE model)
1.75"
2.00"
150
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100
50
0
6,000
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9,000
12,000
Internal Pressure (psi)
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Fiberspar Spoolable Products
 Production
Tubing - FS PT
Pipe - FS LP
 Coiled Tubing -FS CT (for Well Servicing)
 Line
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First FS CT Field String
6500 Ft. Length, 1.5” OD
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CT Burst Pressure
40000
Burst Pressure (psi)
2.00 inch OD
30000
20000
10000
0
QT-1000
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Incoloy-625
Composite
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Hybrid Coiled Tubing
Composite CT
Steel CT
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A Noble Drilling
Corporation Subsidiary
High Pressure Motor Tests
John H. Cohen
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Mud Motor Dynamometer Test Stand
Dynamometer
Flex
Shaft
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Leak Tank
Fluid Inlet
Motor
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2000 psi
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10,000 psi
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CT High Pressure Jet Drilling Rate
1800
1600
1600
Leauder Limestone
3-1/8” Bit
Drilling Rate
1400
1200
1000
800
600
300
400
200
150
0
Rotary
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Conventional
Motor
High Pressure
Motor
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A Noble Drilling
Corporation Subsidiary
DOE High-Pressure Coiled Tubing
Drilling System
Phase III Commercialization
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William C. Maurer
August 8, 2000
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Phase III Commercialization
 Start
Date
 Phase III Budget
 DOE Phase III Funding
Oct. 1, 2000
$3,152,498
$1,585,556
Objective: Field test and demonstrate
prototype CT Drilling System
Sub Contractors:
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BJ Services
Quality Tubing
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Phase III Tasks
 1.
Conduct shallow field test
 2.
Modify system
 3.
Conduct deep field test
 4.
Develop Commercialization Plan
 5.
Write Final Report
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Phase III Plans
 Shallow
 Deeper
field tests
field tests
 Commercial
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tests
- Catoosa
- Marathon Oil
- BJ Services
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Drilling (Vertical)
Conventional
Coiled Tubing
HP Flow
High Pressure Motor
High Pressure Bit
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Jet Slotting
Stimulation
Slots
Formation
Damage
High
Pressure Jets
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Formation Damage Mechanism
(Timmerman, 1982)
Pressure profile
in the formation
Dpskin = Pressure drop across
the damaged zone
Skin or zone
of damage
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“ In must homogeneous matrix
situations, the physical depth of
solids invasion tends to be
shallow (1-2 cm into the
formation)”
(Bennion et al., 2000)
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Well Bore Helical Slotting
Glacier Bluff Dolomite 10,000 psi Jet
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Texas Cream Limestone 10,000 psi Jet
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Tubing
Drilling Cement
High
Pressure Jets
Cement
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CT Cement Cleanout Rates
1200
1000
ROP (ft/hr)
1000
800
600
400
200
60
0
Low Pressure
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10,000 psi
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Cement Cleanout Assumptions
Conventional ROP = 60 ft/hr
 Jet ROP
= 600 ft/hr
 Conv. CT Rig
= $10,000/day
 Jet CT Rig
= $20,000/day
 Land Rig
= $5,000/day
 Offshore Rig
= $200,000/day
 Well Depth
= 10,000 ft.

Conv. Land Cost =
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($10,000 + $5,000) x 10,000
60 x 24
= $104,000
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Cement Cleanout Costs
Cleanout Costs ($ 1000's)
(Land Well)
120
104
Conventional
Jet
100
80
60
40
21
20
0
Cost
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Cement Cleanout Costs
Cleanout Costs ($Millions)
(Offshore Well)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.46
Conventional
Jet
0.15
Cost
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Tubing
Barite Scale Removal
High
Pressure Jets
Barite Scale
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Jetting slots
Cleaning Slotted Liners
Open slots
Tubing
High
Pressure Jets
Plugged slots
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Hole Reaming/Cleaning
Reamed Hole
Hole Guide
High
Pressure Jets
Predrilled Hole
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Under Reaming
Casing
High
Pressure Jets
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Drilling (Horizontal)
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Phase III Commercialization
 BJ
Services
 CT
field operations
 Quality
 High
Tubing
Pressure CT
 Marathon
 Field
test sites
 Maurer
 HP
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Oil
Engineering
motor/bit development
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Potential Market
Applications
Drilling
Open-Hole Slotting
Cement Cleanout
Number
Wells
Income
Per Well
Annual
Income
500
$100,000
$50 Million
1000
$30,000
$30 Million
100
$50,000
$5 Million
Total Income = $85 million/year
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