期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2012
卷号：46
期号：1
页码：164-169
出版社：Journal of Theoretical and Applied
摘要：Refracturing is an important technique for developing low-permeability reservoir economically and effectively. It is the stress field around well bore and fracture that plays a crucial role in determining new fracture creation and propagation. The calculation analysis of the stress induced by pore pressure variation is critical to evaluate the stress field distribution. By employing finite element analysis software ABAQUS, three-dimensional numerical calculation model for stress induced by pore pressure variation is established. It is proved that on the path orthogonal to the initial fracture, the stress induced by pore pressure variation will reduce the value of difference between two horizontal principal stresses. For a point near the initial fracture, the induced stress is mainly generated at the initial stage after the first fracturing treatment.
