Then, the influence of bottom hole pressure on the failure range of weak plane is analyzed for bore holes in naturally fractured formation, with the help of the local coordinate system.

通过建立局部坐标系，得到了裂缝性地层井壁发生失稳的弱面角度随井底压力变化的规律。

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Then, the influence of bottom hole pressure on the failure range of weak plane is analyzed for bore holes in naturally fractured formation, with the help of the local coordinate system.

通过建立局部坐标系，得到了裂缝性地层井壁发生失稳的弱面角度随井底压力变化的规律。

youdao