... hole gauge 内口量具 hole instability 井壁不稳定 hole migration 空穴迁徙 ...
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The instability of the horizontal hole in unconsolidated sand reservoir is the main topic which must be considered during the horizontal well drilling operation.
在疏松砂岩油藏中钻水平井首先要解决的是井眼失稳问题。
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