摘要
体积压裂技术在北美页岩油气藏的开发中取得了显著的效果。对体积压裂的概念和特点进行了总结,从地质和施工工艺两方面分析了体积压裂缝网形成的影响因素,明确了在不同储集层条件下的体积压裂技术施工要点。数值模拟研究表明,体积压裂的单井产能比常规压裂的单井产能要高得多,且其缝网系统可使压力波及更为均匀,开发效果优势非常明显。针对我国致密油藏特征,提出了从致密油藏成藏机理、压前储集层评价、诱导应力场和裂缝起裂机理等3个方面入手的研究思路,这将对我国致密油藏体积压裂技术的发展,具有一定的参考意义。
Network fracturing technology is widespread to development of shale oil-gas reservoirs in North America. with remarkable effec- tiveness and/or success. In this paper, the conception and characteristics of network fracturing technology are summarized. From geology and construction technology, the factors influencing the formation of complex network fractures are analyzed, and the key points of such a technology applied in different reservoir conditions are presented. The numerical simulation study indicates that the network fracturing can improve the single well productivity tremendously than the conventional fracturing technology, and fracture network system may allow the pressure sweep efficiency to be more uniform, with obvious advantages of development effect. Aiming at domestic tight oil reservoirs charac- teristics, the ideas should he studied from three aspects as follows： the tight oil accumulation mechanism, the evaluation of tight oil reser- voirs before fracturing and the induced stress field and fracture/crack initiation mechanism so that provide some references for the develop- ment of network fracturing technology for tight oil reservoirs in China.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2013年第3期345-348,共4页
Xinjiang Petroleum Geology
基金
中石油重大科技专项(2008E-1305)
关键词
体积压裂
致密油藏
缝网
开发效果
network fraeturing： tight oil reseroir
fracture network： development effect
作者简介
王文东（1986-），男．新疆克拉玛依人，在读博士研究生，油气气田开发工程，（Tel）13395321160（E—mail）ace211@163．com．
