Successful Deployment of Long Gun String Via Coiled · PDF filetubing and 7 ⅝” liner...
Transcript of Successful Deployment of Long Gun String Via Coiled · PDF filetubing and 7 ⅝” liner...
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12/8/2013
© 2010 Baker Hughes Incorporated. All Rights Reserved. 1
Successful Deployment of a Long Gun String Via Intelligent
Coiled Tubing
Parry Hillis: Technical Manager BakerHughes
David Ayre: BP Well Perforation Specialist
Jim Gilliat: TCP/DST Business Development BakerHughes
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© 2010 Baker Hughes Incorporated. All Rights Reserved. 2
Background
•The lower open hole completion had to be abandoned due to a screen failure resulting in sand breakthrough and sand to surface.
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Objective
•Perforate an upper interval behind the 5 ½” production tubing and 7 ⅝” liner using 2.00” Intelligent coiled tubing
•Perforate the well with base oil as the completion fluid, holding back pressure to control the underbalance.
• Recover the gun system without killing the well.
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© 2010 Baker Hughes Incorporated. All Rights Reserved. 3
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Why Intelligent Coiled Tubing?
•Allowed deployment of entire 313 metre interval in one run.
•Accurate depth control of the perforating assembly.
•Concerns over sanding and rig time if wireline deployed.
•Only the first run on wireline would be underbalanced.
•Concerns over the reliability of tractors in this high debris environment.
•Projected 7 days to perforate this interval with wireline.
• It took less than 60 hours on coil.
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© 2010 Baker Hughes Incorporated. All Rights Reserved. 4
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Planning
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© 2010 Baker Hughes Incorporated. All Rights Reserved. 5
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Expected Weight Gauge and Operating Limits During RIH - 2.0" CT 37832Base Oil in Well & CT, Air in 300 m of 3.375" Guns, 0.24 FC, 1500 lbsF Stripper Drag
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ight
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BHA Depth [m]
Weight Gauge Friction Lock Limit Actual Weight Gauge Failure Limit
Project Title: 2" CT Gun Deployment
Field-Well: Chirag A-09 Z
Company-Client: BP Azerbaijan
File: \\bjsazb02\Engineering\Coiled Tubing\Deployment System - Snapshot\CIRCA\A-09z CT Perf.c32
Analysis: Monday, November 26, 2012 4:55:21 PM
Scenario: Simon Perf Guns TFA RIH on 2.0" CT 37832
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Expected Weight Gauge and Operating Limits During POOH - 2.0" CT 37832Base Oil in Well & CT, Air in 300 m of 3.375" Guns, 0.24 FC, 1500 lbsF Stripper Drag
We
ight
Gaug
e R
ea
din
g [lb
f]
BHA Depth [m]
Weight Gauge Friction Lock Limit Actual Weight Gauge Failure Limit
Project Title: 2" CT Gun Deployment
Field-Well: Chirag A-09 Z
Company-Client: BP Azerbaijan
File: \\bjsazb02\Engineering\Coiled Tubing\Deployment System - Snapshot\CIRCA\A-09z CT Perf.c32
Analysis: Monday, November 26, 2012 4:59:17 PM
Scenario: Simon Perf Guns TFA RIH on 2.0" CT 37832
Extensive modelling was
carried out to ensure the
coiled tubing could deploy and
recover the gun system.,
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Planning
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© 2010 Baker Hughes Incorporated. All Rights Reserved. 6
Gun shock on the coiled tubing was
a concern, the assembly was
modeled in a number of different
scenarios to predict possible
issues.
Hi speed data recorders were run
with the job to validate the models.
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The Perforating Equipment
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© 2010 Baker Hughes Incorporated. All Rights Reserved. 7
• Standard wireline firing head with a swivel.
• A PFC Gamma Ray/CCL tool for correlation.
• An optional hydraulic time delay firing head.
• 3 ⅜” OD 6 spf 60°phased perforating guns
with high performance deep penetrating
charges
• Live well deployment connectors to allow
retrieval under pressure.
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An HPHT Natural Completion Debris Recipe to test the functionality of the deployment connectors
•By Weight (with a total volume of 1400ml):
– 50% Barite powder
– 30% pipe dope (API 5A3)
– 1% lubriplate hi-temp grease to simulate slickline ops
– 1% WD40
– 15% gravel pack sand (40/60) (representing formation sand)
•By volume
– 3-7% Swarf (fine strands of metal no more than 0.5mm in diameter, 20-25mm long)
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Realistic case, live well connectors are very robust, baked to 350° then functioned.
Casing used in the oven
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Latch subs after unlatching
j-slots are
compacted
with the
debris
mixture
Severe
Well
Conditions
Realistic
Well
Conditions
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Intelligent Coiled Tubing
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© 2010 Baker Hughes Incorporated. All Rights Reserved. 11
Communication system that allows direct
electrical link to downhole tools
Three main components:
• TeleCoil wire and injection system
• Surface equipment for data
recording and display
• Allows accurate depth control for
CT operations
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Typical Coiled Tubing Surface Stack
QUICK CONNECT SUB
STRIPPER
COILED TUBING INJECTOR HEAD
COILED TUBING BOP
FLOW TEE & RISER SECTIONS AS REQUIRED
GATE VALVES x 3 c/w EQUALIZING JUMPER HOSES
DEPLOYMENT BOP
COILED TUBING SHEAR / SEAL BOP
WELLHEAD XMAS TREE
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Deployment BOP
Disconnect Ram
No-Go Ram
with Internal
Lock Ram
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Deployment BHA
COILED TUBING BHA
FLUTED CENTRALISER
SWIVEL
DEPLOYMENT LATCH SUB
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Gun Connector
LATCH SUB
RAM SUB
RECEPTACLE
LATCH KEY ASSEMBLY
AUTO J - SLOT
LOCK GROOVE
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Deployment Sequence
•CT tag Stripper & zero counter.
•Open Xmas Tree Valves. Open Gate Valves. Open BOP Rams.
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Deployment Sequence
•RIH with 1st Gun Assembly & position mid Ram Sub across the No-Go Rams
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Deployment Sequence
•Close No-Go Rams around Ram Sub. Observe rams fully closed.
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Deployment Sequence
•Verify correct positioning by picking up on CT and performing a pull test. Check CT depth tallies with pre-calculated deployment depth.
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Deployment Sequence
•RIH with CT and set down weight on the No-Go Rams. Check CT depth tallies with pre-calculated deployment depth.
•Close Internal Lock Rams
•Close Manual Locks.
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Deployment Sequence
•Close Disconnect Rams. Pick up on CT and confirm clear.
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Deployment Sequence
•CT POOH & Tag the Stripper.
•Open Disconnect Rams.
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Deployment Sequence
•Close Lower Gate Valve.
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Deployment Sequence
•Bleed down WHP above Lower Gate Valve.
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Deployment Sequence
•Close middle Gate Valve.
•Break out at Quick Connect Sub & prepare to run next assembly.
•Stab on Injector Head. Perform pressure test on Quick Connect Sub. Confirm CT tagged and counter zeroed.
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Deployment Sequence
•Equalize WHP across Gate Valves & Riser using Jumper Lines.
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Deployment Sequence
•Open Gate Valves.
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Deployment Sequence
•CT RIH & latch into Receptacle . Check CT depth tallies with pre-calculated latch depth.
•Open Internal Lock Rams.
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Deployment Sequence
•Confirm successful latch by picking up & performing a pull test against the No-Go Rams. Check CT depth tallies with pre-calculated deployment depth.
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Deployment Sequence
•RIH to position mid Ram Sub across No-Go Rams.
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Deployment Sequence
•Open Manual Locks. Open No-Go Rams.
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Deployment Sequence
•RIH to position next connector across No-Go Rams.
•Repeat steps until all assemblies are deployed & hanging off in the BOP.
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The Job
• Dead well deployment with rig, barriers in place
• A gun connector on every other gun body.
• The snap latch feature reduced run time significantly, 3 hours to deploy 313 metres of guns.
• PFC used for real time depth correlation of the perforating assembly.
• Good indication of gun detonation, perforating string pulled up hole before tubing pressure bled down to prevent sand issues
• Wellhead pressure increased to 1,450 psi.
• Assembly recovered in 48 hours with all shots fired and no damage to the coiled tubing as predicted by the computer model.
12/8/2013
© 2010 Baker Hughes Incorporated. All Rights Reserved. 33
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High Speed Recorder Data Overlay
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When permeability and skin were adjusted the overlay was very accuarte
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© 2010 Baker Hughes Incorporated. All Rights Reserved. 35
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Gauge data overlay
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Conclusion
•Deployment of long gun strings on 2.00” intelligent coil is a viable alternative to wireline or tubing conveyed perforating
•Modeling the job is a must and can help mitigate risk
•High speed recorders are excellent tools for model validation.
•Deployment connectors allow the safe recovery of long gun strings without killing the well, thus maintaining productivity.
12/8/2013
© 2010 Baker Hughes Incorporated. All Rights Reserved. 36