2019 2nd International Conference of Green Buildings and Environmental Management | |
Influences of proppant on fracture making ability and fracture conductivity in coalbed methane | |
生态环境科学 | |
Sun, Bin^1 ; Guo, Zixi^2 ; Zhang, Yi^1 ; Zhen, Huaibin^1 ; Zhang, Shuling^3 ; Zeng, Qinggang^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 | |
Sichuan Kehong Oil and Gas Engineering Limited Corporation, Chengdu, Sichuan | |
610051, China^4 | |
关键词: Acid fracturing; Calculation models; Coalbed methane production; Flow experiments; Fracture conductivities; Fracture width; | |
Others : https://iopscience.iop.org/article/10.1088/1755-1315/310/3/032012/pdf DOI : 10.1088/1755-1315/310/3/032012 |
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学科分类:环境科学(综合) | |
来源: IOP | |
【 摘 要 】
The fracture conductivity is one of the most important factors affecting coalbed methane production. The size of proppant, the number of proppant placement layers and the embedment all affect the permeability, thus affecting the fracture conductivity. However, exist research ignored the influence of fracture width. Therefore, according to the formula for calculating the fracture width of acid fracturing, the formula for calculating the fracture width is deduced. According to Carman-Kozeny formula, the fracture conductivity calculation models with and without embedment are respectively established. Through conducting the flow experiment on the coal core, the influence of the number of placement layers and embedment degree on the fracture conductivity is analyzed. The results show that the larger the particle size of proppant is, the more layers are laid, and the wider the fracture width is, thus the greater the fracture conductivity is. The smaller the embedment degree of proppant, the greater the fracture conductivity.
【 预 览 】
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Influences of proppant on fracture making ability and fracture conductivity in coalbed methane | 603KB | download |