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注二氧化碳提高煤层甲烷采收率的实验模拟
引用本文:唐书恒,马彩霞,叶建平,吴建光.注二氧化碳提高煤层甲烷采收率的实验模拟[J].中国矿业大学学报,2006,35(5):607-611,616.
作者姓名:唐书恒  马彩霞  叶建平  吴建光
作者单位:1. 中国地质大学,地质过程与矿产资源国家重点实验室,北京,100083;中国地质大学,岩石圈构造、深部过程及探测技术教育部重点实验室,北京,100083
2. 邯郸职业技术学院,建筑工程系,河北,邯郸,056001
3. 中联煤层气有限责任公司,北京,100011
基金项目:国家自然科学基金;国家重点基础研究发展计划(973计划)
摘    要:针对我国煤层气开发中存在的产气率低、回采周期长的问题,开展了注二氧化碳驱替煤层甲烷的实验模拟研究.根据实验数据,利用扩展Langmuir方程计算了驱替过程中CH4组分的产出特征,并与纯CH4的解吸过程进行了比较.结果表明,在CO2驱替实验中,CH4在单位压降下的解吸率,明显高于纯CH4解吸时单位压降下的解吸率.其中晋城煤层CH4单位压降下的解吸率提高了150%,潞安煤层CH4单位压降下的解吸率提高了270%.由此可见,采用二氧化碳注入技术,可以显著提高煤层甲烷的采收率.

关 键 词:二氧化碳注入  驱替实验  煤层甲烷  提高采收率
文章编号:1000-1964(2006)05-0607-05
收稿时间:2005-07-03
修稿时间:2005-07-03

A Modeling Experiment of Enhancing Coalbed Methane Recovery by Carbon Dioxide Injection
TANG Shu-heng,MA Cai-xia,YE Jian-ping,WU Jian-guang.A Modeling Experiment of Enhancing Coalbed Methane Recovery by Carbon Dioxide Injection[J].Journal of China University of Mining & Technology,2006,35(5):607-611,616.
Authors:TANG Shu-heng  MA Cai-xia  YE Jian-ping  WU Jian-guang
Affiliation:1. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China; 2. Key l.aboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, China University of Geosciences, Beijing 100083,China; 3. Department of Civil Engineering, Handan Polytechnic College, Handan, Hebei 056001, China; 4. China United Coal Bed Methane Co. Ltd, Beijing 100011, China
Abstract:In accordance with the problem of lower productivity and longer recovering period in coalbed methane exploitation of China,a modeling experiment of carbon dioxide displacing coalbed methane was accomplished.On the basis of experimental results,the production characteristics of CH_4 in displacing process was calculated using the extended-Langmuir equation.The compare research between displacing process and pure CH_4 desorption process was carried out.The results indicate that the desorption rate of CH_4 at unit pressure drop in the process of carbon dioxide displacement is obviously bigger than that in the process of pure CH_4 desorption.The coalbed methane desorption rate at unit pressure drop of Jincheng coal was increased by 150%,and that of Lu'an coal was increased by 270%.Hence,the recovery of coalbed methane can be efficiently enhanced by carbon dioxide injection.
Keywords:carbon dioxide injection  displacement experiment  coalbed methane  enhancing recoverv
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