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Fishing[1]
This document outlines fishing operations for stuck pipe, including determining the stuck point, parting the pipe string, and various tools used. It discusses cardinal rules like evaluating the situation, communicating, and gathering information. Methods of pipe sticking like sand, mud, and mechanical are identified. Techniques to free stuck pipe include backoff, chemical cuts, jet cuts, mechanical cuts, jarring, wash-over, and using mills or rotary shoes.
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Fishing[1]
- 1. PETE 406PETE 406 FishingOperationsFishing Operations
- 2. OutlineOutline • Cardinal RulesCardinalRules • Pipe StickingPipe Sticking • Determining the StuckDetermining the Stuck PointPoint • Parting the PipeParting the Pipe StringString • Catch ToolsCatch Tools • JarringJarring • Wash-overWash-over • Loose-JunkLoose-Junk • Mills and RotaryMills and Rotary ShoesShoes • Wireline FishingWireline Fishing • Stuck PackersStuck Packers • Fishing in CavitiesFishing in Cavities
- 3. Cardinal RulesCardinal Rules •Evaluate the situationEvaluate the situation • CommunicateCommunicate – Collect complete informationCollect complete information – Notify the fishing tool companyNotify the fishing tool company – All parties understand the situationAll parties understand the situation – Keep all parties informedKeep all parties informed
- 4. Cardinal RulesCardinal Rules •Gather informationGather information – OD, ID, length of fishing stringOD, ID, length of fishing string – Know limitations of fishing stringKnow limitations of fishing string – Accurate weight indicatorAccurate weight indicator – Locate the top of the fishLocate the top of the fish – Determine freepointDetermine freepoint – Leave one to two joints above freepointLeave one to two joints above freepoint
- 5. Cardinal RulesCardinal Rules •Keep track of pipe talliesKeep track of pipe tallies • Do not rotate fishing stringDo not rotate fishing string • Do not pull out of the rope socketDo not pull out of the rope socket
- 6. Pipe StickingPipe Sticking •Sand StickingSand Sticking • Mud StickingMud Sticking
- 7. Pipe StickingPipe Sticking •Mechanical StickingMechanical Sticking – Stuck packersStuck packers – Multiple strings wrap aroundMultiple strings wrap around – Crooked pipeCrooked pipe – Junk in the holeJunk in the hole
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- 9. Pipe StickingPipe Sticking •KeyseatKeyseat
- 10. Pipe StickingPipe Sticking •Cement StickingCement Sticking
- 11. Pipe StickingPipe Sticking •UndergaugeUndergauge HoleHole
- 12. Pipe StickingPipe Sticking •DifferentialDifferential StickingSticking
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- 14. Lost Circulation StickingLostCirculation Sticking
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- 16. Determining the StuckPointDetermining the Stuck Point ∀∆∆L= Pipe Stretch,inL= Pipe Stretch,in • L = Length of free pipe, ftL = Length of free pipe, ft • E = Modulus of ElasticityE = Modulus of Elasticity • a = cross section of pipea = cross section of pipe • SC = Stretch constantSC = Stretch constant • FPC = Free pointFPC = Free point constantconstantF FPCL L SCLFL aE LF L s ×Λ = ××=∆ × ×× =∆ 12
- 17. Determining the StuckPointDetermining the Stuck Point • SC = 0.4/aSC = 0.4/ass • FPC = 2500 X aFPC = 2500 X ass • There are stretch tables and stretchThere are stretch tables and stretch graphs availablegraphs available
- 18. Determining the StuckPointDetermining the Stuck Point • The best way though is with a Freepoint tool.The best way though is with a Freepoint tool. • This is a wireline tool that is run inside the stuckThis is a wireline tool that is run inside the stuck pipe.pipe. • Periodically (based on calculations) the pipe isPeriodically (based on calculations) the pipe is stretched and rotated.stretched and rotated. • The freepoint tool detects movement in the pipe.The freepoint tool detects movement in the pipe. • If there is no movement, the pipe is stuck.If there is no movement, the pipe is stuck. • The deepest point where the freepoint toolThe deepest point where the freepoint tool detects movement is the freepointdetects movement is the freepoint
- 19. Parting the PipeStringParting the Pipe String • BackoffBackoff • Chemical CutChemical Cut • Jet CutJet Cut • Mechanical CutMechanical Cut
- 20. BackoffBackoff • Blind backoffBlindbackoff • Backoff toolBackoff tool – InsideInside – outsideoutside
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- 24. Catch ToolsCatch Tools •OvershotOvershot • Basket GrappleBasket Grapple • Spiral GrappleSpiral Grapple
- 25. Catch ToolsCatch Tools •SpearSpear
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- 29. Mills and RotaryShoesMills and Rotary Shoes