Evolution characteristics of coal reservoir parameters in different adsorption gas extraction process

XU Jiang; LIU Long-rong; PENG Shou-jian; FENG Dan; SU Xiao-peng; ZHANG Lan

doi:10.16285/j.rsm.2017.06.013

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Evolution characteristics of coal reservoir parameters in different adsorption gas extraction process

更新时间：2026-06-25

- Evolution characteristics of coal reservoir parameters in different adsorption gas extraction process
- Vol. 38, Issue 6, Pages: 1647-1656(2017)
- 作者机构：
  
  1. 重庆大学煤矿灾害动力学与控制国家重点试验室
  2. 中煤科工集团重庆研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.06.013
  CLC： TD712.6
- Published：2017
- 稿件说明：
移动端阅览
[1]许江,刘龙荣,彭守建,冯丹,苏小鹏,张兰.不同吸附性气体抽采过程中煤储层参数演化特征研究[J].岩土力学,2017,38(06):1647-1656.

XU Jiang, LIU Long-rong, PENG Shou-jian, et al. Evolution characteristics of coal reservoir parameters in different adsorption gas extraction process[J]. 2017, 38(6): 1647-1656.
[1]许江,刘龙荣,彭守建,冯丹,苏小鹏,张兰.不同吸附性气体抽采过程中煤储层参数演化特征研究[J].岩土力学,2017,38(06):1647-1656. DOI： 10.16285/j.rsm.2017.06.013.

XU Jiang, LIU Long-rong, PENG Shou-jian, et al. Evolution characteristics of coal reservoir parameters in different adsorption gas extraction process[J]. 2017, 38(6): 1647-1656. DOI： 10.16285/j.rsm.2017.06.013.

摘要

利用自主研发的多场耦合煤层瓦斯抽采物理模拟试验系统

开展了不同吸附性气体抽采的物理模拟试验

探讨了煤层瓦斯抽采过程中煤储层气压、温度及煤层变形等参数的时空演化规律。结果表明:（1）煤储层气压在抽采前期下降较快并形成以钻孔为中心的气压等值面

距离抽采钻孔越远的区域煤层瓦斯流速越小

气压下降速率越低;（2）气体吸附性越强

抽采过程中的煤储层气压下降速率越低且持续时间越长;（3）煤储层温度的时间演化规律与气压基本一致

在抽采前期有显著的降低

在抽采后期受吸附态气体解吸吸热及热交换作用的影响

煤层温度出现先下降后小幅上升;（4）距离钻孔越近的区域气压下降量越大

煤层温度下降越明显

煤层所受有效应力越大

煤层变形量也越大;（5）抽采气体的吸附性越大

抽采所导致的煤层变形量越大。

Abstract

A self-developed multi-field coupling physical simulation testing system was employed to investigate the gas pressure

coal temperature

the deformation and other parameters evolution characteristics of coal reservoir during the process of extracting different adsorption gas.The results demonstrate that the gas pressure of coal reservoir decreased rapidly at the early stage of extraction

and formed a gas pressure equivalent plane with the center of the drill hole.The gas flow rate and pressure drop rate declined with the increase of distance.The stronger ability of adsorption

the lower the gas pressure drop rate and the longer the duration.The time evolution law of coal reservoir temperature and the time evolution law of gas pressure were consistent.Coal reservoir temperature decreased significantly at the early stage.At the late stage of extraction

under the influence of desorption of the adsorbed gas and heat exchange

the coal bed temperature appeared to decrease initially and then increase slightly.The closer position from extraction drill hole

the greater the pressure drop

the more obvious the coal bed temperature decreased and the greater the amount of coal deformation.The stronger the ability of adsorption is

the greater the deformation of the coal caused by gas extraction.

关键词

Keywords

references

Views

195

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Mechanical model and test study of sealed drilling for hydraulic fracturing in underground coal mines

Experimental research on concrete permeability of underground structure

Impact of PS on permeability of unsaturated ruins clay

Review of deformation mechanism and stability analysis of anti-dipped rock slopes

Nonlinear mechanical response of surrounding rock in compressed air energy storage cavern based on Hoek-Brown criterion

Related Author

CHEN JIU-fu

XIA Bin-wei

LU Yi-yu

MEI Xu-dong

GE Zhao-long

JIANG Ying-yu

ZHAN Xin-jie

LIN Wei-an

Related Institution

Songzao Coal-Electricity Co., Ltd., Chongqing Energy Investment Group

State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University

Suzhou Waterway Management Office

Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University

School of Civil Engineering, Zhejiang Sci-tech University

AI问答

⁰