Directional Drilling with Coil tubing - Drilling Engineering Association
Directional Drilling with Coil tubing - Drilling Engineering Association
Directional Drilling with Coil tubing - Drilling Engineering Association
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<strong>Drilling</strong> <strong>Engineering</strong> <strong>Association</strong> - Forth Quarter<br />
<strong>Coil</strong> Tubing <strong>Directional</strong> <strong>Drilling</strong><br />
Steve Carey<br />
INTEQ Product Line Manager<br />
Houston, November 20 th 2008
Content<br />
• Why <strong>Coil</strong> Tubing <strong>Directional</strong> <strong>Drilling</strong>?<br />
• Re-entry<br />
• Grass roots<br />
• Questions
Closed loop / Automated <strong>Drilling</strong> Systems<br />
<strong>Coil</strong>Trak ®<br />
TruTrak ®<br />
Slim AutoTrak ® RSS
What is <strong>Coil</strong>ed Tubing <strong>Drilling</strong>?<br />
• CT & Motor to drill, sidetrack, or deepen a well<br />
Efficiencies & economies compared <strong>with</strong> jt’d pipe<br />
• Types of CTD<br />
Non-directional i.e. ~90% Canada shallow
Why consider <strong>Coil</strong> Tubing <strong>Directional</strong> <strong>Drilling</strong>?<br />
• Reservoir access<br />
• Production<br />
• Recovery factor<br />
• Life of Field<br />
• Existing infrastructure<br />
• Unit lifting costs<br />
• Hostile environments<br />
• Environmental impact
Typical reentry CTD sidetrack<br />
Parent - 4 ½” production <strong>tubing</strong><br />
-7”liner<br />
Pre rig<br />
• Set 4 ½” x 7” whipstock<br />
• Squeeze cement to abandon perfs<br />
CTD<br />
• Mill window<br />
• Drill - 3 3/4” or 4 1/8” bicenter<br />
- 45° DLS common<br />
- Xanthan drilling fluid<br />
• Run 3 3/16” x 2 7/8” liner & cmt<br />
• Log CNL & Perforate<br />
2.3/8” slimhole option<br />
increases candidates<br />
7“ liner<br />
through<br />
<strong>tubing</strong><br />
whipstock<br />
23/8“liner<br />
41/2“production<br />
<strong>tubing</strong><br />
Top of 3 3/16“ in<br />
4 1/2” tailpipe<br />
liner cement<br />
CTD Sidetrack<br />
CTD “bighole“ completion<br />
33/16“liner<br />
liner crossover<br />
27/8“liner<br />
4 1/8“ or 3 3/4” openhole<br />
whipstock set in 3 3/16“ liner<br />
optional “slimhole“<br />
sidetrack from<br />
existing “bighole”<br />
sidetrack
Electronic Disconnect & Circulation (EDC)
Electro-Hydraulic Orienter (HOT)<br />
Oil Chamber #2<br />
Spiral Piston<br />
Stroke length<br />
corresponds to 400° rotation<br />
of spiral thread<br />
Oil Chamber #1
Oversized, quality?<br />
Most tortuous<br />
Least tortuous, longest reach
A case for Rib Steering
3” <strong>Coil</strong>Trak RSM<br />
Control Electronics<br />
Near bit Inclination 12.2ft (3.73m) behind bit<br />
Hydraulic Power Unit<br />
Bit RPM measurement<br />
• 4 <strong>Drilling</strong> Modes<br />
- “ribs off”<br />
X-treme motor section<br />
Steering Pads 1.3ft (0.4m) behind bit<br />
- “steer” (direction steer force)<br />
- “inclination hold” (target inclination + steer force)<br />
- “backreaming” (steer mode <strong>with</strong> SF = 0%)
RSM extends lateral and saves 6 days/$ - Alaska<br />
Well Data<br />
• North Slope<br />
• August 2008<br />
• 3 ¾” Re-entry<br />
• Sandstone<br />
INTEQ Solution<br />
• 3” RSM and <strong>Coil</strong>Trak<br />
• 3 ¾” Hughes Christensen Bit (HCM 304Z)<br />
Objectives<br />
•Extended lateral<br />
•Decrease tortuosity and drag<br />
•Meet AFE $/time<br />
•Increase production<br />
Results – Answers While <strong>Drilling</strong><br />
•AFE –6 days<br />
•Additional sidetrack drilled<br />
•Minimize tortuosity + extend lateral<br />
•Improved weight-to-bit transfer<br />
•Improved bore-hole quality<br />
•Increased production<br />
True Vertical Depth (ft)<br />
850<br />
0<br />
900<br />
0<br />
6000<br />
800<br />
0<br />
950<br />
0<br />
6500<br />
7000<br />
North (ft)<br />
7 inch<br />
7500<br />
0<br />
8000<br />
500<br />
TD 14,750ft MD<br />
P1-24L 1<br />
TD 14,017ft MD<br />
P1-24L 1-01<br />
1000<br />
2000<br />
1500<br />
East (ft)<br />
2500<br />
3000<br />
C 2008 Copyright Baker Hughes Inc. All righ
A case for Reservoir navigation<br />
Shaley sand <strong>with</strong> poor markers. What if dip or faulting different than<br />
expected? Porpoise = lost pay and in some cases OH sdtk.
Multiple Propagation Resistivity<br />
• Frequencies 400kHz & 2MHz<br />
• Pilot fleet
TruTrak CTDD - DJ Basin
TruTrak Automated <strong>Directional</strong> <strong>Drilling</strong><br />
• Unmatched X-treme<br />
motor power<br />
+<br />
• Reliable VertiTrak hardware<br />
+<br />
• Superior AutoTrak<br />
steering concept<br />
MWD System<br />
Adapter Sub<br />
Pulser Sub<br />
Control Sub<br />
X-treme<br />
Power Section<br />
Steering Head
A Slide Only Experience<br />
Downlink System<br />
Commands:<br />
– Maintain Verticality<br />
– Kick-Off and Build to 30 O<br />
– Hold Inclination<br />
– Drop back to Vertical<br />
– Maintain Verticality
TruTrak on <strong>Coil</strong> Tubing<br />
Tool size 9-1/2“ 8“ 6-3/4“ 4-3/4“<br />
Max. Inclination 30° 30° 30° 90°<br />
Max Build up rate 2° / 100 ft 2° / 100 ft 3° / 100 ft 5° / 100 ft<br />
Possible to run<br />
on coil<br />
no<br />
no<br />
Under certain<br />
conditions<br />
yes<br />
Commercial yes yes yes Pilot phase
TruTrak: New Well Profiles<br />
a) b) c)
4.3/4 TruTrak on CT<br />
Results<br />
• 21 wells ~ 118,000ft (14 <strong>with</strong> 3.1/2” CT)<br />
• Exceptional HS&E<br />
– fewer crew; less handling; automation<br />
• Ave. 3 - 4 days drilling /well (8,000ft)<br />
• 500 fph instantaneous / 200 fph average ROP<br />
• Precise directional control “painting the line”<br />
• Excellent bore-hole quality<br />
• HD404z optimized bit / hydraulics<br />
• Case histories awaiting approval<br />
• Continue CTD <strong>with</strong> TruTrak 2 nd rig<br />
• Further optimize CTDD operation
TruTrak advantages<br />
• Precise well placement via automated control<br />
– High-quality, vertical section<br />
– Smooth build/drops <strong>with</strong> minimal doglegs<br />
– Efficient tangent drilling in auto-inclination hold mode<br />
• Improved bore-hole quality<br />
– Minimal doglegs<br />
– Reduced tortuosity<br />
• Lower torque and drag<br />
– In-gauge hole<br />
– No spiraling<br />
– Time saving<br />
• Improve gross ROP vs. conventional motors<br />
– No correction runs<br />
– Simple casing run and reduced wear
Questions?
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