| 椭圆形井眼的井壁稳定分析 |
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| 引用本文： | 陈永明.椭圆形井眼的井壁稳定分析[J].中国海上油气(工程),1996(5). |
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| 作者姓名： | 陈永明 |
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| 作者单位： | 胜利石油管理局钻井所 山东东营，257017 |
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| 摘 要： | 本文分析了由井眼崩落造成的椭圆形井眼的井壁稳定问题,推导出了椭圆形井眼的地层破坏压力和地层坍塌压力的计算式,结果表明椭圆形井眼的破裂压力和坍塌压力都比圆形井眼大,从而提高了钻井液密度的设计下限。
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| 关 键 词： | 椭圆井眼 井壁稳定 地层破裂压力 地层坍塌压力 |
Borehold Wall Stability Analysis of Elliptical Hole |
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| Chen Yongming.Borehold Wall Stability Analysis of Elliptical Hole[J].China Offshore Oil and Gas(Engineering),1996(5). |
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| Authors: | Chen Yongming |
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| Affiliation: | Chen Yongming |
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| Abstract: | The article analyzes the problem of the wall stability of elliptical hole arising from hole sloughing, and derives the formula for calculating the formation fracture pressure and formation collapse pressure of elliptical hole. The results indicate the formation fracture pressure and collapse pressure in elliptical hole are higher than that in circular hole. Thus, the design low limit for drilling fluid density are relaxed. |
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| Keywords: | elliptical hole wall stability formation fracture pressure formation collapse pressure |
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