【作者】 殷有泉； 吴向军； 刁建快； 蒋阗； 单文文；

【Author】 Yin Youquan Wu xiangjun Diao Jiankuai (Dept.of Mechanics,Peking University Beijing 100871) Jiang Tian Shan Wenwen (Langfang Branch,Research Institute of Petroleum E.&D.Langfang 102801)

【机构】 北京大学力学与工程科学系； 石油开发科学研究院廊坊分院；

【摘要】 本文用有限元方法数值地研究了水力压裂的支撑裂缝对储层应力场的影响,从而探讨了重复压裂产生新缝的可能性。结果表明,通常的支撑裂缝导致的附加应力场,在井孔附近仅有几兆帕的量级,仅在远场主应力σ_H和σ_h相差不大时才有可能重复压裂产生新缝。更多还原

【Abstract】 The paper studies an effect of the prop-fracture in hydraulic fracturing to a stress distribution in reservoir by finite element method and so discusses a possibility of new fracture production in refracturing.Results demonstrate that an induced stress due to the prop-fracture is usually less than 10Mpa in the vicinity of the bore hole,and only when an intial difference of the horizontal principal stress is small,it is able to produce new fractures under refracturing.更多还原