a brief introduction to coiled tubing: what is it? what to do with it?, pumpsandpipesmdhc
TRANSCRIPT
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November 12, 2007
A Brief Introduction to Coiled TubingWhat is it? What do we do with it?
Li Gao, PhD
Research DepartmentHalliburton
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Outline• Halliburton Company• Coiled Tubing history• What is it? Equipment• What do we do with it? Applications • PE vs. MD
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• Funded in 1919• Offers the world's broadest
array of products, services and integrated solutions for oil and gas exploration, development and production.
• $35B market cap, $22B revenue in 2006
• Employs 100,000 people in more than 120 countries
Halliburton Company
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CTAT Time LineCoiled Tubing History: Military Origin
• D-Day, Pluto Project
– Pipe Line Under The Ocean
– British engineers developed long, continuous pipeline to supply Allied forces
– Twenty-three 3” pipelines across the English channel– 30 to 70 miles long– Fabricated from 4000’ sections, Butt welded together
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Coiled Tubing History: Military Origin
• Submarines– Antenna Deployment System
• Developed by Bowen Tool• Deployed 5/8” polyethylene antenna to surface from
submerged submarine• Packer device to seal around antenna
– Evolved into Coiled Tubing Injector Head
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1st Coiled Tubing Work in the Oilfield
• California Oil Company, 1962• Bowen Oil Tool fabricated reel and equipment
– Reel: 1.315” O.D. Pipe, 50’ sections butt welded, 15000’ total length
– Used for washing out sand bridges on oil and gas wells
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Coiled Tubing Unit
Tubing
Injector
Tubing Guide
Reel
ControlHouse
Well Control Equip.
Crane
Power Pack
Stripper
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Tubing
• Steel pipe 1” OD to 3.5” OD• Yield strengths of 70,000, 80,000, 90,000, 100,000 psi• Relatively thin wall• Finite life due to fatigue cycles (bending)
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• Hydraulically powered counter rotating chains
• Gripper blocks mounted in chain assembly
• Injector designation based on maximum pull capability, e.g 30K can pull 30,000 pounds
Injector
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• Guides tubing into injector• Large radius for best tubing life
Tubing Guide (Guide Arch)
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• Used to store tubing• Large radius for best tubing life• Level wind assembly to wrap
tubing on and off reel
Reel
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• Operator station for unit control• Typically mounted behind reel
Control House
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Coiled Tubing: What do we do with it?
• Uncoiled into live oil and gas wells to perform maintenance operations
– placement of chemicals– cleaning– manipulation of mechanical tools– milling / drilling– logging / perforating
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CT Applications
For vertical, horizontal and deviated wells, both on land and offshore:
• Drilling
• Logging
• Perforating
• Stimulation
• Fluid displacement
• Sand control
• CT conveyed perforating
• Wellbore cleanout
• Remedial cementing
• Setting and retrieving bridge plugs
• Permanent installations
• Running packers
• CT as flowline
• Removal of wax, hydrocarbon or hydrate plugs
• Flow control of horizontal and deviated completions
• Fishing
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A Comparison between …
• Sand, hydrates, etc. deposits • Cholesterol plaque built up
• Well intervention • Percutaneous Coronary Intervention (PCI)
• Well intervention engineer using Coiled Tubing
GoFlo® Flow Remediation Service
• Stenotic coronary arteries• Clogged/blocked wellbore/pipeline
PE’s world MD’s world
• Interventional Cardiologist
Laser Angioplasty
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Just Need to Shrink the Whole Coiled Tubing System…
• Call Prof. Wayne Szalinski• Inventor of the incredibly powerful Shrinking Machine