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 .
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.
出处
《西安石油学院学报（自然科学版）》
EI
2000年第4期42-43,85,共3页
Journal of Xi'an Petroleum Institute（Natural Science Edition)
关键词
油田开发
地应力
三维分层
模型
井眼岩石破裂
oilfield development, ground stress, stratification, structural stress, fracture pressure
