钻井减震稳定工具的研制与应用

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中图分类号：TE921文献标识码：A DOI：10.12473/CPM.202407081

Abstract：During drilling in medium to deep strata，the complexity and poor drillability of these formations maylead to buckling and jumping of drilling tool，resonance fatigueofdrillstring，and lowdrilling efficiency.To solve these problems，adriling shock absorptionand stabilization tool was developed.This tool enablesthe dril string toadaptto weightonbits（WOBs）andabsorb/reduce thedynamicaxial load generatedbydrillbit whiledrillingthrough the two-way movement of the disc spring.Itcan reduce the force generated by vibration through mechanical friction，thereby improving the rate of penetration （ROP）and prolonging the service lifeof drilling tool.The strength and stiffess ofthe disc spring，the keycomponentofthe drilling shock absorptionand stabilization tool，were analyzedandcalculated bynumerical simulation software.Itisverified that thedrilling shock absorption and stabilization tool is designed rationally，with the maximum working WOB up to 220kN and the disc spring stroke of（5O±15）mm，and meets the designed performance.Filed application in the Bohai Oilfield demonstrates thatthe tool structure isrelible，andthe wells withthedrillingshock absorption and stabilization tool yield the average stick-slip vibration value 30. 72% lower than that of the adjacent wells without such tool in the same interval of the same formation，indicating a noticeable effect of shock absorption.

Keywords：medium to deep strata；driling；shock absorption and stabilization tool；disc spring；stick-slip vibration

0 引言

在渤海油田的储量构成中，中深层油气资源占据了核心地位，其巨大的开发潜力对渤海油田实现年产4000万t的战略目标具有决定性意义。（剩余9126字）