spe-170831 going long - overcoming challenges in completing 3600 … 2014 roundtable... ·...
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SPE-170831
Going Long - Overcoming Challenges in
Completing 3600 m Laterals
R. Liston and C. Lynn, Shell, B. Layton – STEP Energy Services,
E. Fraser – ThruTubing Solutions
Presented at the ICoTA Roundtable – Oct. 29, 2014 by
L. Edillon, STEP Energy Services
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
PRESENTATION OUTLINE
� Overview of the Asset
� The Benefit of Longer Wells
� Introduce the Challenge
� Completion Objectives
� Equipment Design (Coiled Tubing / BHA Design)
� Operational Summary
� Conclusions and Recommendations
Slide 2
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
GROUNDBIRCH ASSET OVERVIEW
� Location: Northeast BC, Canada
� Montney Formation (shaly siltstone)
� Horizontal Wells
� 2,100 to 2,600 m TVD
� 4,500 to 6,300 m MD
� 114.3 mm or 139.7 mm casing
� Unconventional Gas Play (thousands
of wells planned)
� All planned completions activities
must be highly reliable and repeatable!
Slide 3
Gundy
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
THE BENEFIT TO LONGER WELLS
Dominance of Longer Wells in Unconventionals
1) Access more reserves with one wellbore [improved economics]
2) Reduced environmental footprint [HSE]
3) Reduced dead space in development
Groundbirch Conducted 5 Well Trial to Prove Technical Do-Ability
Slide 4
1
2
3
AO13
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Slide 4
AO13 if this gets blurry when its blown up on the projector, you will not be able to read it. and the two squares in the left corner should either be photo shopped out or not cut off, looks messy. Anna Ostrom, 10/7/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
Well PBTD
(m)
TVD (m) Lateral Length
(m)
MD/TVD
B 6,250 2,353 3,550 2.66
C 6,310 2,423 3,589 2.60
D 6,320 2,479 3,611 2.55
E 6,180 2,354 3,638 2.63
F 6,283 2,427 3,676 2.59
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
THE CHALLENGE – “GOING LONG”
Slide 6
� Increase lateral length 60% to 3600 m
� Key Design Considerations:
� Drilling (SPE-170888-MS) – 177.8mm x 139.7mm ← Modified design
� Effective stimulation of complete lateral ← Plug & Perf
� Effective cleanout of wellbore post-stimulation ← Limiting factor
Address the limitations:
Completion Objectives
Design Optimization
Execution
AO15
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Slide 6
AO15 the arrow in the first line needs to be fixed. this is also a fairly boring slide.Anna Ostrom, 10/7/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
SERVICE EQUIPMENT OPTIONS CONSIDERED
Slide 7
� Specific Requirements:
1. Depth: Achieve 6250 m w/ 250 daN to mill out deepest plug.
2. Annular Velocity: >40 m/min in vertical 177.8 mm Casing
3. Cost: Avoid increasing completion cost / meter of well in
development scenario
� Options considered:
Coiled Tubing Snubbing Unit Service Rig
BL2
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Slide 7
BL2 again this slide needs something to keep the audience. Creat boxes for options considered - possibly bought up with animationBen Layton, 10/8/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
Project Overview
Slide 8
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De
pth
(m
)Injector Weight (daN)
Force Limitation Utilizing 50.8 mm / 60.3 mm Coiled Tubing
60.3 mm 50.8 mm
Target Depth : 6250 m
AO12
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Slide 8
AO12 youve cut off the "slide 10" in the right corner. either make them all smaller or takethem out. Anna Ostrom, 10/7/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
Project Overview
Slide 9
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De
pth
(m
)Injector Weight (daN)
Force Limitation Utilizing 50.8 mm / 60.3 mm Coiled Tubing
60.3 mm 50.8 mm
Target Depth : 6250
Vertical portion of well
Heel portion of well
Horizontal portion of well
AO9
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Slide 9
AO9 change the referance lines to black. having the red may cause confusion.Anna Ostrom, 10/7/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
Slide 10
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De
pth
(m
)Injector Weight (daN)
Force Limitation Utilizing 66.7 mm Coiled Tubing
66.7 mm 60.3 mm 50.8 mm
Target Depth : 6250 m
Target Depth Not Reached
AO11
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Slide 10
AO11 same with this change the large arrow to black. Anna Ostrom, 10/7/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
CT SELECTION CRITERIA SUMMARY
Slide 11
CT Size
Specific Requirements
Meets Objectives
Depth:6250 m
required
Annular Velocity: >40 m/min
required
Cost:Complete all
wells with 1
string (CT
Fatigue)
60.3 mm 5400 m 33.6 m/min No Concern No
66.7 mm 6000 m 38.6 m/min Concern No
BL4
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Slide 11
BL4 Watch that the green is still legible when used with the projector.Change Slide to black - make meet objectives Dark bolded redBen Layton, 10/8/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
EXTENDED REACH TECHNIQUES CONSIDERED
Options Considered:
Coiled Tubing Tractor
Pipe Straightener
Slide 12
Hydraulically activated downhole pulling effect – up to 7000 lbs of additional force
� Risk of becoming stuck in hole from debris-
laden column.
� Cost of losing the tool downhole. Availability at
time of operation.
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
ALTERNATIVE EXTENDED REACH TECHNIQUES
Options Considered:
Coiled Tubing Tractor
Pipe Straightener
Slide 13
Straightens pipe to reduce residual bend and friction
� Additional mechanical bend increases fatigue
� Time constraints to design and develop for large OD CT
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
UNDERSTANDING CT LIMITATIONS – LITERATURE REVIEW
� Greater reaches obtained with tractors non viable for application
� Project exceeded conventional limitations w/o tractors (2.57 MD/TVD)
Slide 14
Reference (SPE#) Region CategoryCT Total Depth
CT Lateral Reach
MD/TVD
(md-m) (m)
94208 (Moore et al., 2005) Sakhalin, Russiawith Tractor
9,373 6,760 3.59
164237 (Arukhe et al., 2013) Saudi Arabia 9,113 6,217 3.15
170831 (Liston et al., 2014) W. Canada
without Tractor
6,198 3,612 2.57
159574 (Griffin and Nichols, 2012) Bakken Shale, US 5,520 2,939 2.14
127399 (Al-Buali et al., 2009) Saudi Arabia 3,694 2,390 1.99
168250 (Burke et al., 2014) Alaska
CT Drilling
4,077 1,309 1.47
106874 (Tongs et al., 2007) W. Canada 6,370 1,908 1.43
84162 (Patrick et al., 2003) W. Canada 6,605 1,025 1.21
AO8
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Slide 14
AO8 This chart may be too busy, some may have an issue reading this from the back of the room.Anna Ostrom, 10/7/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
The Answer: Benefits of an Engineered 73.0 mm Tapered String
Slide 15
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-10000 -8000 -6000 -4000 -2000 0 2000 4000 6000D
ep
th (
m)
Injector Weight (daN)
73.0 mm 66.7 mm 60.3 mm 50.8 mm
Target Depth : 6250 m
0.250”Wall
0.250”Wall
0.175”Wall
0.175”Wall
0.156”Wall
0.156”Wall
SimplifiedCT XC
SimplifiedCT XC
CT Size
Specific Requirements
Meets Objectives
Depth:6250 m
required
Annular Velocity: >40 m/min
required
Cost:Complete all
wells with 1
string (CT
Fatigue )
Tapered
73.0 mm6250 m 40.5 m/min Concern YES
BL5
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Slide 15
BL5 again watch this greenRemove 7 inch casing, enlarge font, make green text either more green or black with green shading in background. - make colors more pronoucned and legible.Ben Layton, 10/8/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
TOOL DESIGN – MAXIMIZE RATE AND MINIMIZE FATIGUE
Objectives:
Requirement: Improved BHA design
Slide 16
Maximize Velocity Increase TorqueMinimize Stalls / Circ. Pressure
Control Fatigue
Motor
Performance
Standard 2-7/8”
Design
New 3-1/8”
Design
% Improvement
Flow Range
(L/Min)190-650 380-800 25 %
Operating Pressure (kPa)
7,310 5,450 26 %
Stall Torque (Nm)
1,790 2,200 23 %
BL6
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Slide 16
BL6 may want to make this chart a little biggerCreate boxes for objectivesPercent improvement over previous designBen Layton, 10/8/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
COILED TUBING EQUIPMENT DESIGN
New trailer construction enabled:1) Additional pipe capacity2) Overcome transport limitations
from Houston to Site (4,400 kms)
Slide 17
73.0 mm ODReel
Capacity (m)
Weight (lbs)
Previous Design
5330 150,000
New Design 6800 180,000
BL7
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Slide 17
BL7 eliminate 60.3 and 66.7mmalude to transportation issues that forced the construction of new equipmentBen Layton, 10/8/2014
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SPE-170831
Going Long – Overcoming Challenges in Completing 3600m Laterals
OPERATIONAL SUMMARY
Slide 18AO3
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Slide 18
AO3 Same comment as slide 7Anna Ostrom, 10/7/2014