| 欠平衡钻井井底合理压差的力学依据 |
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| 引用本文： | 杨虎.欠平衡钻井井底合理压差的力学依据[J].西部探矿工程,2000,12(4):62-63. |
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| 作者姓名： | 杨虎 |
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| 作者单位： | 新疆石油局钻井工艺研究院!新疆克拉玛依834000 |
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| 摘 要： | 根据力学理论从岩石抗强度（坚固程度）和岩抗拉强度（胶结强度）两个重要指标，推导出适应各种条件欠平衡钻井全理井底钢压差的判别式，并进行了现场实例计算，证明该判别式对欠平衡钻井现场应用具有一定的参考价值。
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| 关 键 词： | 欠平衡钻井 负压差 力学 计算 油田 |
Study on Mechanics Basis of Well Bottom Negative Pressure in Reason during UBD |
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| Yanghu.Study on Mechanics Basis of Well Bottom Negative Pressure in Reason during UBD[J].West-china Exploration Engineering,2000,12(4):62-63. |
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| Authors: | Yanghu |
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| Abstract: | This paper deduces Under Balance Drilling(UBD) negative pressure discriminates of well bottom in reason from two important guidelines;Rock pressure intention(firmness degree)and draw intention(cementation degree) on basis of mechanics theory.and carries out the calculation on the practice spot,which proves that these discriminates have some reference value on field application of the Under Balance Drilling. |
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| Keywords: | UBD negative pressure mechanics calculation example |
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