摘要
地应力场、岩石物性、孔隙压力、射孔和天然裂缝是控制水力压裂裂缝起裂和扩展的主要因素。根据滨南油田660区块和853区块的实际工况,通过数值模拟和真三轴水力压裂物理模拟,结合岩石的抗拉破坏准则,模拟了射孔方位角和地应力状态等因素对水力压裂过程中起裂压力和裂缝扩展过程的影响,结果表明射孔方位角和地应力场控制着起裂压力、裂缝扩展方位和形态,成果可对油田水力压裂设计、施工提供参考。
Hydraulic fracturing technology is one of economic and effective means to enhance the low permeability reservoir production.The primary factors of influencing the initiation and propagation of fracture,in-situ stress field,physical parameters of rock,pore pressure,perforation and inartificial fractures play the important role.Based on the actual situation of 853 and 660 areas of Binnan Oilfield,numerical and physical modeling test together with the tensile criterion of rock material are employed.The controlling effect of perforation orientation and in-situ stress field to the break pressure and process of propagation were researched. The results show that the break pressure ,propagation process of fracture and the style are controlled by perforation orientation and in-situ stress field,it provides a valuable guidance to the designing hydraulic fracturing treatment and the operation of the oilfield.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2009年第5期374-377,共4页
Journal of Oil and Gas Technology
基金
中国地质科学院基本科研业务费(Ywf060717)
地质力学所基本科研业务费资助(DZLXJK200705)
关键词
地应力场
水力压裂
数值模拟
物理模拟试验
滨南油田
in-situ stress field
hydraulic fracturing
numerical simulation
physical model experiment
