Micro-pilot test for optimized pre-extraction boreholes and enhanced coalbed methane recovery by injection of liquid carbon dioxide in the Sangshuping coal mine

doi:10.1016/j.psep.2019.12.036

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Micro-pilot test for optimized pre-extraction boreholes and enhanced coalbed methane recovery by injection of liquid carbon dioxide in the Sangshuping coal mine
	Wen, Hu 1,4; Cheng, Xiaojiao 1,4; Chen, Jian 3; Zhang, Chunru 3; Yu, Zhijin 1,4; Li, Zhenbao 2; Fan, Shixing 1,4; Wei, Gaoming 1,4; Cheng, Bangkai 3
刊名	Process Safety and Environmental Protection
	2020-04-01
卷号	136 页码:39-48
关键词	Boreholes Carbon dioxide Coal Coal bed methane Coal deposits Coal industry Coal mines Efficiency Extraction Firedamp Liquefied gases Liquid methane Metal recovery Natural gas wells Displacement method Enhanced coalbed methane recoveries Extraction efficiencies Liquid carbon dioxide Pilot tests Pressure conditions Pressure swing adsorption Sorption/Desorption
ISSN号	09575820
DOI	10.1016/j.psep.2019.12.036
英文摘要	The extraction efficiency of high-gas coal seams is low in China with a large number of pre-drainage boreholes. In this study, we analyze the coal seam gas displacement mechanism using liquid carbon dioxide by combining theoretical analysis, experiments, and field tests. Changes of gas displacement efficiency with time under different displacement flow and pressure conditions are determined. We propose a coalbed methane displacement method using liquid carbon dioxide and apply the model in a field test carried out in well No. 2 of the Sangshuping coal mine. The results show that the injection of liquid carbon dioxide in coal seams is a pressure swing adsorption process. The effective displacement radius from the in-situ tests reaches 20 m. The maximum CH4 extraction concentration in the test area is 65%, which is 2.41 times higher than that of the original coal seam (27%). The maximum methane extraction flux rate is 0.884 m3/min, which is 2.34 times that of original coal seam (0.377). Implementation of liquid carbon dioxide displacement coalbed methane technology optimizes borehole arrangement and enhances coalbed methane extraction. © 2020 Institution of Chemical Engineers
WOS研究方向	Engineering
语种	英语
出版者	Institution of Chemical Engineers
WOS记录号	WOS:000522394400004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115802]
专题	石油化工学院
作者单位	1.College of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an; 710054, China; 2.College of Petro-chemical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 3.Huainan Mining Group Co, Huainan Anhui; 232001, China; 4.Shaanxi Key Laboratory of Prevention and Control of Coal Fire, Xi'an; 710054, China;
推荐引用方式 GB/T 7714	Wen, Hu,Cheng, Xiaojiao,Chen, Jian,et al. Micro-pilot test for optimized pre-extraction boreholes and enhanced coalbed methane recovery by injection of liquid carbon dioxide in the Sangshuping coal mine[J]. Process Safety and Environmental Protection,2020,136:39-48.
APA	Wen, Hu.,Cheng, Xiaojiao.,Chen, Jian.,Zhang, Chunru.,Yu, Zhijin.,...&Cheng, Bangkai.(2020).Micro-pilot test for optimized pre-extraction boreholes and enhanced coalbed methane recovery by injection of liquid carbon dioxide in the Sangshuping coal mine.Process Safety and Environmental Protection,136,39-48.
MLA	Wen, Hu,et al."Micro-pilot test for optimized pre-extraction boreholes and enhanced coalbed methane recovery by injection of liquid carbon dioxide in the Sangshuping coal mine".Process Safety and Environmental Protection 136(2020):39-48.