[1]段利江,唐书恒,刘洪林,等.煤储层物性对甲烷解吸及采出的影响[J].西安科技大学学报,2008,(04):680-683.
 DUAN Li-jiang,TANG Shu-heng,LIU Hong-lin,et al.Impact of coal reservoir physical property on coalbed methane desorption and production[J].Journal of Xi'an University of Science and Technology,2008,(04):680-683.
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煤储层物性对甲烷解吸及采出的影响()
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2008年04期
页码:
680-683
栏目:
出版日期:
2008-12-31

文章信息/Info

Title:
Impact of coal reservoir physical property on coalbed methane desorption and production
文章编号:
1672-9315(2008)04-0680-05
作者:
段利江1唐书恒1刘洪林2鲁人齐1
1.中国地质大学北京能源学院,北京,100083; 2.中国石油勘探开发研究院 廊坊分院,河北 廊坊,065007
Author(s):
DUAN Li-jiang1 TANG Shu-heng1 LIU Hong-lin2 LU Ren-qi1
1. Energy Resources School, China University of Geosciences, Beijing 100083,China; 2. Langfang Branch, Research Institute of Petroleum Exploration and Development, CNPC, Langfang 065007,China
关键词:
煤层气 储层 物性 煤阶 解吸
Keywords:
coalbed methane reservoir physical property coal rank desorption
分类号:
P618.11
文献标志码:
A
摘要:
响煤层气解吸采出的诸多因素作用于煤储层,体现为煤储层允许煤层气扩散渗流或导流的能力,所以在研究气体解吸特性时煤储层自身的物性值得重点探讨。基于这一点,对比研究了高低煤阶煤的物性差异,探讨了其对气体解吸采出的影响。研究表明,低煤阶煤分子结构较松散,孔隙度高,高煤阶煤分子结构紧密,孔隙度低,降压解吸过程中低煤阶煤物性变好,高煤阶煤物性变差。罐装煤样解吸和室内模拟实验揭示,物性是决定气体解吸的关键要素,这也是低煤阶煤储层含气量低但仍具有很大开发潜力的根本原因。低煤阶煤层孔渗较好,压降传播快,在开采过程中可形成自
Abstract:
The factors influencing coalbed methane(CBM)desorption and production act on coal reservoir, and are reflected as the ability of reservoir allowing CBM to diffuse and permeate. So the coal reservoir physical property should be paid more attention when doing research on gas desorption. For this reason, the physical property differences between high and low rank coal reservoirs were studied, and the impact of physical property differences on gas desorption and production were discussed. The results show that the molecular structure of low rank coal is loose, and the porosity is high. However, the molecular structure of high rank coal is tight, and the porosity is low.The physical property of low rank coal is better, whereas, that of high rank coal is worse during gas desorption. Both canister desorption of coal and simulation experiment imply that reservoir physical property is the key element of influencing gas desorption, which is also the underlying reason of low rank coal's high development potential despite low gas content. The low rank coal has better porosity and permeability, and in which the pressure spreads fast, so self-relieving pressure effect can be formed easily during exploitation. The high rank coal has poor porosity and permeability, and in which the pressure spreads slowly,so massive fracturing and multilateral well technique should be adopted in order to increase single well yield.

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备注/Memo

备注/Memo:
基金项目: 国家自然科学基金项目(40772096); 国家863专题课题(2006AA06Z235),国家973计划课题(2002CB211702)和教育部新世纪优秀人才支持计划 作者简介:(1982-),男,河南商丘人,博士生,主要从事煤层气地质与开发方面的研究.
更新日期/Last Update: 2008-12-31