Tubular Mechanics in Oil-Gas Wells

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Tubular Mechanics in Oil-Gas Wells and Its Applications Zifeng Li Yanshan University, China 2012 Functions of piperod string in petroleum engineering Functions of the spine in the human body Supporting wellSupporting body Transmit information from well to surface Transmit information from body to head Transmit instruction from surface to well Transmit instruction from head to body Transmit energy and material from surface to well, produce oil and gas Trip in and out tools Functions of piperod string in petroleum engineering Functions of the spine in the human body = What important are these inpetroleum engineering? What are these pipes and rods used in oil and gas wells? What are these pipes and rods used for? Can these pipes and rods trip in and out safely? Are these pipes and rods designed economically? Is the surface equipment suitable for this operation? How to control well trajectory? How to prolong the life of these pipes and rods? How to know bottom hole condition from surface measures? .. To know these, Please Tubular Mechanics in Oil and Gas Wells. USA 1. Lubinski, A. 2. Stefan Miska 3. Hans C. Juvkam-Wold4. Johansick, C.A. 5. Ho,H-S 6. Walker,B.H. 7. Millheil,K.K. 8. Gibbls, S.G. 9. Mitchell,R.F. 10. China: 1. Yinao Su 2. Deli Gao 3. Guozhen Zhao4. Zhiyong Han 5. Wei Jiang 6. Qingyou Liu 7. Qinfeng Di 8. Shimin Dong 9. Zifeng Li 10. Famous Authors in This Area Rod and Pipe Used in Oil and Gas Wells Drill pipe Drill collar Casing Tubing Pumping rod Materials of Rod and Pipe Used in Oil and Gas WellsSymbolYield stress (lb/in2) Tensile stress (lb/in2)Uses D-555500095000 Drill pipe E-7575000100000 X-9595000105000 G-105105000115000 S-135135000145000 AISI414565000100000Drill collar H-404000060000 Casing, tubing J-555500075000 K-555500075000 C-757500095000 L-8080000100000 N-8080000100000 C-9090000100000 C-9595000105000 P-110110000125000 Q-125125000135000 K-83000 Pumping rodC-88000 D-138000 Drill String Drill collar Stabilizer Sub Drill bitSub Drill pipe Drill pipe Kelly Functions of Drill String (1) Provide a passage for drilling fluid from surface to bottom, and return back; (2) Provide weight on bit to break rock; (3) Transfer torque and rotation from surface to bottom; (4) Trip out and in of drill bit etc.; (5) Calculate the depth of the well drilled; (6) Observe down hole conditions; (7) Special operations (coring, fishing etc.); (8) Drill-Stem Testing. The Failure of Drill String DeformationFatigue and Break Wear Casing Drill string Corrosion Hydrogen embrittlement(Cracking) Casing Program Casing Casing body and joints Functions of Casing Surface casing (1) Protect or isolate shallow soft formation;(2) Install wellhead or hang other casing; Production casing (3) Protect formation, provide a path for production; Intermediate casing (4) isolate complex formation; Liner(5) Part of production casing or intermediate casing that is not extended to surface to save casing. Corrosion Wear casing drillstring The Failure of Casing Tension + squeeze compression + squeeze Deformation( Bending, buckling, collapse) Breaking Conventional tubing Body Diameter