Abstract

The process flow chart of hydraulic impact on coal and rock mass is examined. The double-sided packer design is presented for the implementation of the chart in uncased wells of large and varied diameters. The laboratory tests of axial displacement of packer seals are described. The DEM-based stress–strain analysis is performed in rock mass in the vicinity of a well subjected to pressure from packer seal. The pressures at the packer seal–well wall interface are calculated.

中文翻译：

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煤层水力压裂中的帕克封口-井筒相互作用

摘要

考察了水力作用对煤和岩体的影响的工艺流程图。提出了双面封隔器设计，以便在大直径和不同直径的无套管井中实施图表。描述了封隔器密封件轴向位移的实验室测试。基于DEM的应力-应变分析是在受到封隔器密封压力的井附近的岩体中进行的。计算了封隔器密封件与井壁之间的界面处的压力。