Study on Multi-clusters Fracturing interference by Finite Element Method in Tight Sandstone Reservoir

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Yang, Peng^1 ; Zhou, Jun^2 ; Zhang, Yang^1 ; Feng, Linsong^1 ; Guo, Lin^1

No.6 Oil Production Plant of Changqing Oilfield Company, CNPC, Dingbian

718606, China^1

Sinopec Research Institute of Petroleum Engineering, Beijing

100101, China^2

关键词: Disturbance effects;    Fracture distributions;    Induced stress;    Tight sandstone reservoirs;    Tight sandstones;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022070/pdf
DOI  :  10.1088/1755-1315/170/2/022070

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The disturbance effect between fractures enhanced by the characteristic of large scale and high fracture distribution density while staged multi-clusters fracturing technology has been widely applying in horizontal well of tight sandstone reservoirs. For tight sandstone well fracturing, treatment tools and bridge plug need to be set between stages, and this procedure takes no less than 4 hours, which provide plenty of time for fracturing fluid's leaking-off, generate the pore pressure decreasing around hydraulic fracture, and this will reduce the induced stress field strength. In this paper, finite element method (FEM) has been employed, combining with the actual treatment procedures, we analysed the distribution of induced stress field between stage and clusters space respectively.