Study on parameters optimization of coalbed gas drilling drainage by high pressure water jet

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Liu, Jialiang^1,2,3 ; Li, Kunyuan^1

School of Civil Engineering, Chongqing Jiaotong University, Chongqing, China^1

Engineering Research Center of Bridge Structure and Materials in Mountain Area, Chongqing Jiaotong University, Chongqing, China^2

National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing, China^3

关键词: Coal-bed gas;    Gas drillings;    High flexibility;    High-pressure water jets;    Non-conventional energy;    Orthogonal design test;    Parameters optimization;    Water jet parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022097/pdf
DOI  :  10.1088/1755-1315/170/2/022097

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Coalbed gas is a kind of non-conventional energy with non-pollution and high-quality. High pressure water jet technology has many advantages in coalbed gas drilling drainage, due to no heat effect, high flexibility, and high surface quality. To reduce the energy consumption of this technology, especially for the hard coal rock, the water jet parameters optimization is studied in this paper. Based on an established three-dimensional damage numerical model and the orthogonal design tests, it analyzes the influence characteristic of different water jet parameters on coal bed gas drilling drainage and obtains the optimal water jet parameters combination finally. The results could improve the efficiency of high pressure water jet drilling drainage.