| 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.
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| Source Publication | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
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| 2016-01 | |
| Volume | 28Pages:1-14 |
| ISSN | 1875-5100 |
| Abstract | 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. |
| Keyword | Cbm Desorption Area Finite Element Method Contour |
| DOI | 10.1016/j.jngse.2015.11.026 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000370457700002 |
| WOS Keyword | ORGANIC RANKINE-CYCLE ; SUPERCRITICAL CO2 ; TEMPERATURE ; CAPTURE ; REACTOR ; ENERGY ; SYSTEM |
| WOS Research Area | Energy & Fuels ; Engineering |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| Funding Organization | 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. |
| Department | LMFS水环境流体力学(LEM) |
| Classification | 二类/Q2 |
| Ranking | False |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/58669 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | Liu, YW (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China. |
| Recommended Citation 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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| a2016-102.pdf（684KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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