中国石油大学学报（自然科学版）2016，Vol.40Issue(5)：79-86,8.DOI:10.3969/j.issn.1673-5005.2016.05.009
水力深穿透射孔对压裂裂缝形态影响的数值模拟
Numerical simulation of hydraulic deep jet perforation on fracture propagation and orientation
摘要
Abstract
A fracture propagation model in the process of deep jet perforation was established based on the anisotropic elastic-ity theory and the principles of fluid mechanics in porous media, and a method for determining the propagation angle of the fractures was proposed referring to the maximum hoop stress theory. A Newton method was used to solve the numerical mod-el, which has been verified by case studies. The results show that the radius of the reoriented fractures increases with the in-crease of the jet perforation length and jet angle, and it also increases with the increase of the pumping rate and viscosity of the fracturing fluid. Symmetric jet perforation is better than the perforation in one side. The fracture reorientation radius in-creases with the anisotropic ratio and the elastic modules, while it decreases with the increase of the stress difference.关键词
水力深穿透射孔/水力压裂/裂缝扩展形态/弹性模量/各向异性Key words
hydraulic deep jet perforation/hydraulic fracture/fracture propagation morphology/elastic module/anisotropic分类
管理科学引用本文复制引用
仲冠宇,王瑞和,周卫东,陈贵春,万春浩..水力深穿透射孔对压裂裂缝形态影响的数值模拟[J].中国石油大学学报（自然科学版）,2016,40(5):79-86,8.基金项目
国家“973”项目(2014CB239202) （2014CB239202）
