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Coiled Tubing Drilling from a Vessel
P&A Seminar October 30th
By Vidar Haugen
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Island Offshore Coil Tubing
studies TOPTENSION
INJECTOR &
STRIPPER
CT-INJECTOR
FRAME
CT-CURSOR/
RISER
HANGOFF
FRAME
LOWER
CURSORFRAME
MOONPOOL
HATCHES
COIL LOOP
SUPPORT
WELL SERVICE
PUMPS
PROCESSING UNIT
KILL REEL &
KILLHOSE
CT - REEL
INTEGRATED
OPERATIONAL
CONTROL CABIN
IRON
ROUGHNECK
CATWALK
MACHINE ON
PALLETS
PIPERACK
w/ RISER
LRP / WCP
QUICK-
CON.
SURFACE
BOP
FLOW-
TEE
EDP -BASED ON
MODIFIED
LLP AND
- RETAINER VALVE
- BREAKAWAY JOINT
- STRESS MEASUREMENT
ULP
LUB
LLP
T-RING
HSET
LUB
SWIVEL
WEAK
LINK
STRESSJ.
RET.
VALVE
&
LLP
(EDP)
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Rogfast Coiled Tubing Drilling & Coring
3
scope of delivery
Island Offshore:
• Deck and handling equipment
• Passive compensator
• Subsea injector
• Baseplate
• ROV Service
Baker Huges:
• CT equipment on deck
• Pumps
• 2 7/8" Coiled tubing
• Directional Drilling and Coring equipment
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Rogfast
• 25.5km subsea tunnel from Randaberg to Bokn
• Area with no reliable bedrock information
• Collect core samples to Statens Vegvesen
• Baker Hughes delivered CT, Drilling & Pumping service
• Finish project October 2014
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Vessel: Island Performer
• Loa: 130m
• B: 25m
• 300T tower – 140Te winch – 29m lifting height
• 250T offshore crane
• 2 off ROVs
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Injector Parking & Tool Handling Skid
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Launching & Landing of Subsea Gide Base
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Subsea Injector Operation, ROV Panel
Gauges for Injector
functions.
Receptacles for
Inductive couplers
Receptacle for High-Flow
coupler.
Gauges for Load-
Cells
Receptacle for
Low-Flow
functions
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Subsea injector operator panel
• Weight on bit
• Coiled Tubing running/pulling speed
• Heave monitoring, position of vessel compensator
• Hydraulic pressure from power unit
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Drilling & Coring
Directional Drilling - «standard» oilfield CT drilling equipment
• Equipment:
• 5 7/8” Hughes Christensen rock bit
• AutoTrak X-treme 3D RSS driven by a 4 ¾” X-treme motor
• 4 ¾” Ultra X-treme LS (400-1200LPM)(50-155RPM) max 4450Nm
• 3 1/8” CoilTrak contingency drilling assembly (not used)
• HT-10 Coring system driven by 4 ¾” Ultra X-treme LS motor
• The primary AutoTrak assembly have proven to have a dogleg capability of 15 degrees / 30 meters in the Rogfast project with full formation evaluation capabilities
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Well no: 1
Water depth: 250
Length: 172 meter
Deg inc: 41°
Well no: 2
Water depth: 200
Length: 260 meter
Deg inc: 52°
Well no: 3
Water depth: 286
Length: 169 meter
Deg inc: 34,5°
• Well cemented after
collect core samples
Rogfast wells
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RISERLESS LIGHT WELL
INTERVENTION (RLWI)
• Plug and Abandonment of Subsea wells
• Pilot-hole drilling with Coiled Tubing
• Open water completion
• Well Intervention from vessel
Mechanical and hydraulic tool operation
Pumping and injection
Well cleaning and circulation