| 三维分层地应力模型与井眼岩石破裂准则 |
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| 引用本文： | 张毅,闫相祯,颜庆智. 三维分层地应力模型与井眼岩石破裂准则[J]. 西安石油大学学报(自然科学版), 2000, 15(4) |
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| 作者姓名： | 张毅 闫相祯 颜庆智 |
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| 作者单位： | 1. 胜利石油管理局采油工艺研究院,山东,东营,257000
2. 石油大学,建工系,山东,东营,257062 |
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| 摘 要： | 对油田开发分层地应力进行弹性力学分析 ,建立了分层地应力三维弹性力学计算模型 .分析模型综合考虑了垂向地应力与岩石特性对破裂压力的影响 ,给出考虑垂直应力影响的最小地应力计算公式 ,结果可用于油田开发设计 .另外 ,分别考虑地层垂向压力和岩石变形特性的影响 ,采用控制最小周向应变参数得到了井眼岩石破裂的准则 .
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| 关 键 词： | 油田开发 地应力 分层 构造应力 破裂压力 |
3D Mode l for the Stratified Calculation of Ground Stress and Fracture Criterion of Wellhole Rock |
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| ZHANG Yi,YAN Xiang-zhen,YAN Qing-zhi. 3D Mode l for the Stratified Calculation of Ground Stress and Fracture Criterion of Wellhole Rock[J]. Journal of Xian Shiyou University, 2000, 15(4) |
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| Authors: | ZHANG Yi YAN Xiang-zhen YAN Qing-zhi |
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| Abstract: | D mechanical model is established for the stratified calculation of ground stress based on elastic mechanics, and in it, the effects are considered of vertical ground stress and rock property on fracture pressure. The model can be used for oilfield development design. Fracture criterion of wellhole rock is gained by controlling the mininum of hoop strain. Vertical formation pressure and rock deformation are considered in the criterion. |
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| Keywords: | oilfield development ground stress stratification structural stress fracture pressure |
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