中国石油大学学报（自然科学版）2016，Vol.40Issue(2)：129-134,6.DOI:10.3969/j.issn.1673-5005.2016.02.016
一低渗油藏径向水力射流压裂裂缝延伸规律
Research on fracturing extension by radial hydraulic jet in low permeability reservoirs
摘要
Abstract
Based on the extended finite element method and combining with the criterion of tensile resistance failure, a three-dimensional finite element model of radical hydraulic jet fracturing fracture was built to study the influences of drilling pore diameter, drilling pore azimuth and depth on formation fracturing pressure. The results show that, with the increase of drill-ing pore diameter, the initiation fracture pressure has a significant linearly decreasing tendency. The formation fracturing pressure increases with the increase of perforation azimuth. 40° is the allowed critical perforation azimuth to obtain the low formation fracturing pressure. A angle less than 40° between the optimizing bore and the maximum horizontal stress is better. The propagation law of fracturing fracture varies under different perforation angles.关键词
低渗透/径向水力射流/压裂/裂缝延伸Key words
low permeability/radical hydraulic jet/fracture/fracture extension分类
能源科技引用本文复制引用
张丁涌,袁士宝,田相雷,张伟,左家强..一低渗油藏径向水力射流压裂裂缝延伸规律[J].中国石油大学学报（自然科学版）,2016,40(2):129-134,6.基金项目
“十二五”国家科技重大专项(2011ZX05051) （2011ZX05051）
