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钻井复杂情况
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钻井复杂情况
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drilling complicacy
钻井复杂情况
钻遇地层时,由于井身结构不合理、钻井液类型或性能与地层不相适应、钻具组合不匹配、形成井眼质量差等原因,造成无法进行正常钻进及其他作业的事件。
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