Optimal design of fracturing initiation position and breakdown pressure in horizontal well fracturing

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Zhen, Huaibin^1 ; Zhang, Tianxiang^1 ; Guo, Zixi^2 ; Zhu, Weiping^1 ; Zhao, Yunxiang^3 ; Zhang, Huaiming^4

China United Coalbed Methane National Engineering Research Center, Beijing

100095, China^1

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan

610500, China^2

School of Science, Southwest Petroleum University, Chengdu, Sichuan

610500, China^3

211 Unit, Southwest Branch, BGP INC., China National Petroleum Corporation, Wusheng, Sichuan

611430, China^4

关键词: Breakdown pressure;    Calculation process;    Directional well;    Fracture initiation;    Fracture initiation pressures;    Horizontal well fracturing;    Optimal design;    Vertical wells;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/3/032013/pdf
DOI  :  10.1088/1755-1315/310/3/032013

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The fracture initiation mechanism of horizontal wells is significantly different from that of vertical wells and conventional directional wells. Therefore, the study of fracture initiation mechanism and fracture initiation pressure in horizontal wells is of great significance to the optimal design of hydraulic fracturing in horizontal wells. In order to determine the fracturing initiation pressure, the fracturing position and the initiation direction, the stress state and stress distribution of borehole are analyzed. The optimal model of fracture initiation position and breakdown pressure is established and the calculation process is proposed.