气候变化领域集成服务门户(CCPortal): Improvement of Thick Coal Seam Gas Drainage Efficiency Using Highly Pressurized Multidischarge CO2 Gas Fracturing Technique

CCPortal

DOI	10.1021/acsomega.3c08651
	Improvement of Thick Coal Seam Gas Drainage Efficiency Using Highly Pressurized Multidischarge CO2 Gas Fracturing Technique
	Guo, Baohua; Zhong, Pengbo; Zhang, Zhezhe; Cheng, Shengjin; Wang, Chuanqi
发表日期	2024
ISSN	2470-1343
起始页码	9
结束页码	11
卷号	9 期号:11
英文摘要	Thick coal seam fracture stimulations were conducted to enhance pre-gas drainage efficiency through the use of a highly pressurized multidischarge carbon dioxide gas fracturing technique. This method also offers potential as a strategy for carbon dioxide sequestration, aiding in the reduction of atmospheric carbon dioxide levels and thereby contributing to the fight against climate change. This paper discusses findings from both field experiments and numerical simulations. Data from the field show that the multidischarge fracturing approach significantly improves permeability in thick coal seams, thereby boosting gas drainage effectiveness. Additionally, the impact of increasing the number of fracturing devices is more pronounced at distances of 2.5 or 7.5 m from the borehole but becomes more complex at 12.5 m or further. The numerical simulations reveal that this technique primarily enhances coal seam gas drainage by improving the seam permeability and establishing a gas pressure gradient within the seam. It is noted that the radius of failure around the borehole wall expands with higher discharge pressures, while the radius of effective drainage narrows as the gap between discharge heads increases. Moreover, adding more discharge sets significantly influences the deformation and permeability of the coal seam within a 5 m radius of the fracturing borehole, but the influence is not obvious after 10 m from the fracturing borehole. [GRAPHICS] .
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:001180640800001
来源期刊	ACS OMEGA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295044
作者单位	Henan Polytechnic University; Henan Polytechnic University
推荐引用方式 GB/T 7714	Guo, Baohua,Zhong, Pengbo,Zhang, Zhezhe,et al. Improvement of Thick Coal Seam Gas Drainage Efficiency Using Highly Pressurized Multidischarge CO2 Gas Fracturing Technique[J],2024,9(11).
APA	Guo, Baohua,Zhong, Pengbo,Zhang, Zhezhe,Cheng, Shengjin,&Wang, Chuanqi.(2024).Improvement of Thick Coal Seam Gas Drainage Efficiency Using Highly Pressurized Multidischarge CO2 Gas Fracturing Technique.ACS OMEGA,9(11).
MLA	Guo, Baohua,et al."Improvement of Thick Coal Seam Gas Drainage Efficiency Using Highly Pressurized Multidischarge CO2 Gas Fracturing Technique".ACS OMEGA 9.11(2024).