1 fundamentals of drilling fishing – stuck pipe problems presentation no. 4 fundamentals of...
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Fundamentals of DrillingFishing –
Stuck Pipe Problemspresentation No. 4
Fundamentals of Onshore Drilling
references:
• Bernt S. Aadnoy, Iain Cooper, Stefan Z. Miska, Robert F. Mitchell, Michael L. Payne: Advanced Drilling and Well Technology. SPE 2009, ISBN: 978-1-55563-145-1.• Robello G. Samuel, Xiushan Liu: Advanced Drilling Engineering – Principles and Design. Gulf Publishing Company, Houston Texas, 2009,
ISBN: 978-1-933762-34-0.• Joe DeGeare, David Haughton, Mark McGurk: The Guide to Oilwell Fishing Operations (Tools, Techniques and Rules of Thumb). Gulf Drilling Guides, Houston, Texas, 2009, ISBN: 978-0-7506-7702-2.•A Primer of Oilwell Drilling. Petroleum Extension Service, Houston, Texas 2001, ISBN: 0-88698-194-8.• Robello, R. G.: Downhole Drilling Tools. Gulf Publishing Company, Houston, Texas 2007, ISBN: 978-1933762135.
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Causes for Fishing Operations
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Causes of Stuck Drill String
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1. Formation Related Causes of Stuck Drill String
Mobile Formations(salt, plastic shale)
UnconsolidatedFormations
(sands, gravels)
Fractured / FaultedFormations
(fault/rubble zones)
Reactive Formations(swelling clays)
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2. Drilling Operation Related Causes of Stuck Drill String
Junk in Hole(lost roller cone)
Poor HoleCleaning
Keyseat inDoglegs
Collapsed Casing
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2. Drilling Operation Related Causes of Stuck Drill String
Differential StickingMud Cake Too Thick
Undergauge HoleWorn Bit Gauge
Cement Related Flash Setting
of Cement
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Principle of Jarring Operation
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Techniques for Catching the Fish
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Principle of Overshot Operation
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Recovering or Removing Small Junk
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Various Types of Milling Tools
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Working Principle of a Junk Sub
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Catching Roller Cones with Junk Basket
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Catching Logging Cable with a Wire-Line Spear
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Fishing Tools
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Fishing Tools
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Fishing Tools
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THE END!!!
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Screwing / Unscrewing Drillpipe