A Poroelastic PKN Hydraulic Fracture Model Incorporating Dislocation Theory

摘要：

Characterization of hydraulic fracturing directly through well injection pressure is widely applied to determination of minimum field stress in geo-mechanics. This hydraulic fracturing technique is also used in the oil and gas industry to increase gas and oil production. A variety of models have been developed in this area, but few of them take account of poroelastic effects induced by leak-off of the fracturing fluid. Hydrofracturing results in a volumetric increases and , in turn, induces an instantaneous undrained change in pore fluid pressures in the surrounding porous host. With shrinkage of the fracture volume, hydrofracturing is capable of depressing pore pressure and this is a common observation after well injection stops. A poroelastic PKN hydraulic fracture model using dislocation theory is formulated in this paper and the results agree with the data on site very well.

关键词： field stresses pore pressure hydraulic fracturing dislocation theory

作者: OUYANG Zhihua LI Qiang WANG Shengkai QUAN Zhongxue

作者单位: Department of Mining Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China

会议类型: 国际会议

会议名称: The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)

会议地点: 河南焦作

会议语种:英文

页码: 384-390

在线出版日期: 2007-04-17（万方平台首次上网日期，不代表论文的发表时间）