Desorption area and pressure-drop region of wells in a homogeneous coalbed

doi:10.1016/j.jngse.2015.11.026

IMECH-IR > 流固耦合系统力学重点实验室

	Desorption area and pressure-drop region of wells in a homogeneous coalbed
	Wan YZ; Liu YW(刘曰武); Ouyang WP; Liu WC; Han GF; Liu, YW (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
发表期刊	JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
	2016-01
卷号	28 页码:1-14
ISSN	1875-5100
摘要	The coalbed methane (CBM) desorption area is highly important in the placement of wells to produce an adequate working system. This paper develops a homogeneous seepage model of CBM that incorporates desorption and uses a finite-element method to obtain the pressure field in complex boundary cases influenced by adjacent wells. The pressure field is presented in a 2D and pseudo-3D form that visually demonstrates the shape of the pressure profile and the pressure expansion. A method of combined numerical computation and contour drawing technology is used to determine the CBM desorption area and pressure drop region. By analyzing the main factors that affect the CBM desorption region, we demonstrate that a higher value of critical desorption pressure yields a larger desorption area of the seam. The effect of the permeability is different from the value of the critical desorption. This effect is determined by the critical desorption pressure level and the intersection of pressure profiles with different permeabilities. Permeability anisotropy leads to a desorption area with an elliptical shape. We also demonstrate that a greater flux of methane will result in a greater desorption region, and the effects of the distance between wells and the desorption area are closely related to the permeability. The developed model is applied in a field case to predict the desorption area. (C) 2015 Elsevier B.V. All rights reserved.
关键词	Cbm Desorption Area Finite Element Method Contour
DOI	10.1016/j.jngse.2015.11.026
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000370457700002
关键词[WOS]	ORGANIC RANKINE-CYCLE ; SUPERCRITICAL CO2 ; TEMPERATURE ; CAPTURE ; REACTOR ; ENERGY ; SYSTEM
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical
项目资助者	The authors would like to acknowledge the funding by the project (Grant No. 51404232) sponsored by the Natural Science Foundation of China (NSFC), the National Science and Technology Major Project (Grant No. 2011ZX05038003) and the project (Grant No. 2014M561074) by the China Postdoctoral Science Foundation.
课题组名称	LMFS水环境流体力学(LEM)
论文分区	二类/Q2
力学所作者排名	False
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58669
专题	流固耦合系统力学重点实验室
通讯作者	Liu, YW (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Wan YZ,Liu YW,Ouyang WP,et al. Desorption area and pressure-drop region of wells in a homogeneous coalbed[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2016,28:1-14.
APA	Wan YZ,刘曰武,Ouyang WP,Liu WC,Han GF,&Liu, YW .(2016).Desorption area and pressure-drop region of wells in a homogeneous coalbed.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,28,1-14.
MLA	Wan YZ,et al."Desorption area and pressure-drop region of wells in a homogeneous coalbed".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 28(2016):1-14.

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