在石油钻井工程中，影响井壁稳定性的因素较多。

Many factors can influence stability of well wall in the area of petroleum drilling engineering.

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提高取心率与保持井壁稳定性是对油页岩充分评价的关键性技术。

Increased core rate and to maintain borehole stability obtained is crucial to fully evaluate the oil shale.

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泥页岩井壁失稳的化学与力学耦合作用是井壁稳定性研究中较为关注的问题。

Shale stability coupling with mechanics and chemistry is a focus of attention in the field of borehole wall stability study.

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