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Systems and methods to identify and inhibit spider web borehole failure in hydrocarbon wells

机译:识别和抑制油气井中蜘蛛网钻孔失败的系统和方法

摘要

Determining, based on asymmetric spalling of rock at a wall of a wellbore of a hydrocarbon well, that the wellbore is experiencing a spider web borehole failure (SWBF); and in response to the determination: generating a forward model of rock strength for the well (including a rock strength reduction function defining a rock strength reduction factor (r) as a function of angular width of a borehole failure (W)); determining an angular width of the SWBF (WSWBF); determining, based on application of the angular width of the SWBF (WSWBF) to the rock strength reduction function, a rock strength reduction factor (r) for the well; determining, based on the rock strength reduction factor (r) and an unconfined compressive strength of intact rock (Co), an unconfined compressive strength of fractured rock (Cfrm); and operating the well based on the unconfined compressive strength of fractured rock (Cfrm).
机译:基于在烃井的井眼壁处的岩石的不对称剥落,确定井眼正经历蜘蛛网钻孔故障(SWBF);并响应于该确定:生成井的岩石强度的正向模型(包括将岩石强度降低因子(r)定义为井眼破坏的角度宽度(W)的函数的岩石强度降低函数);确定SWBF的角宽度(W SWBF );基于将SWBF的角宽度(W SWBF )应用于岩石强度降低函数,确定井的岩石强度降低因子(r);根据岩石强度折减系数(r)和完整岩石的无侧限抗压强度(C o )确定裂缝岩石的无侧限抗压强度(C frm ) ;根据裂隙岩石的无侧限抗压强度(C frm )进行作业。

著录项

  • 公开/公告号US10753203B2

    专利类型

  • 公开/公告日2020-08-25

    原文格式PDF

  • 申请/专利权人 SAUDI ARABIAN OIL COMPANY;

    申请/专利号US201816031374

  • 发明设计人 MOHAMMED S. AMEEN;

    申请日2018-07-10

  • 分类号E21B49;E21B47/002;E21B47/14;

  • 国家 US

  • 入库时间 2022-08-21 11:30:38

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