井壁稳定新观点——能量守恒  

A New Idea of Wellbore Stability:Conservation of Energy

作　　者：徐加放[1] 邱正松[1] 李云贵[2] 亢德峰[2] 

机构地区：[1]中国石油大学(华东)石油工程学院 [2]胜利油田渤海钻井二公司

出　　处：《钻井液与完井液》2007年第5期12-14,共3页Drilling Fluid & Completion Fluid

基　　金：山东省自然科学基金资助项目(Y2006F66)

摘　　要：提出了利用能量守恒原理分析井壁稳定的新观点,该观点能够解释通常室内实验破坏机理和现场遇到的大多数问题,并得到了许多现场实例的验证。探讨了定量确定与钻井过程有关的主要能量形式的理论模型及其定量确定的简单方法,分析了不同能量形式对井壁稳定的影响,给出了减少井壁失稳的建议和措施。A new idea of wellbore stability employing the conservation of energy was suggested in this paper. This idea can be used in explaining the rock failure mechanism in laboratory experiments and field practices and was validated by case histories. The theoretical model for the major energy forms involved in drilling engineering was discussed and a quantitative method for determining the energies was presented. Based on the analyses of the effects of different energy forms on wellbore stability, suggests and measures concerning minimizing wellbore instability were offered.

关 键 词：井壁稳定 能量守恒 钻柱振动 疲劳破坏 

分 类 号：TE28[石油与天然气工程—油气井工程]