Research on dynamic variation effect of coal reservoirs permeability

CHEN Jin-gang; XU Ping; LAI Yong-xing; DU Yun-hai

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Research on dynamic variation effect of coal reservoirs permeability

更新时间：2026-06-25

- Research on dynamic variation effect of coal reservoirs permeability
- Vol. 32, Issue 8, (2011)
- 作者机构：
  
  1. 郑州大学工程力学系,郑州,450001
  2. 郑州大学水利与环境学院,郑州,450001
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV139.1
- Online First：16 August 2011，
  
  Published：2011
- 稿件说明：
移动端阅览
CHEN Jin-gang, XU Ping, LAI Yong-xing, et al. Research on dynamic variation effect of coal reservoirs permeability[J]. 2011, 32(8).
DOI：

CHEN Jin-gang, XU Ping, LAI Yong-xing, et al. Research on dynamic variation effect of coal reservoirs permeability[J]. 2011, 32(8). DOI：

摘要

基于现代测试技术和煤层气井实测排采数据，采用物理模拟和数值模拟研究方法，探讨了开采过程中煤储层渗透率动态变化效应。研究结果表明，试验模拟和数值模拟渗透率数值相差较大，可达1～2个数量级；煤储层渗透率动态变化效应呈现出两种相反的规律，即数值模拟渗透率随流体压力降低而衰减，试验模拟渗透率随流体压力降低而增大，两种模拟渗透率动态变化特征看似相互矛盾，实则相互衔接，预示煤储层渗透率在排采过程中会逐渐得以改善。根据分析，揭示了二者差异性的根本原因。提出在整个排采过程中，应采用动态渗透率指标，不断调整和优化工作制度

Abstract

Based on the modern testing technologies and actual measuring data of coalbed methane (CBM) well

using physical and numerical simulation methods

the dynamic variation effect of coal reservoirs permeability during gas recovery has been discussed. The results indicate that permeability has larger difference

which may reach 1-2 order of magnitude; the two opposite regularities of dynamic variation of coal reservoirs permeability are presented between experimental simulation and numerical simulation; that is to say

numerical simulation permeability decreases with the decrease of fluid pressure; while experimental simulation permeability increases with the decrease of fluid pressure. Dynamic characteristics of permeability for two methods seem contradictory; but in fact interrelated. Coal reservoir permeability will be improved gradually during gas recovery. According to comparative analysis

the causes of differences between two methods are revealed. During the whole process

dynamic permeability index should be used to adjust and optimize the work system continuously.

关键词

Keywords

references

Views

1504

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Research on triaxial stress seepage experiment device loaded by high pressure water and negative pressure

Relevant experiments, models and environmental effect of shale gas production

Methods for testing permeability of deep mudstone and analysis of data reliability of each method

Analysis of reservoir deformation and fluid transportation induced by injection of CO2 into saline aquifer: (I) Two-phase flow-reservoir coupling model

Experimental study of permeability characteristics of multiscale rock

Related Author

TIAN Kun-yun

ZHANG Rui-lin

ZHANG Hong-xue

LIU Wei-qun

LIU Wei

LI Yin-ping

ANG Chun-he

MA Hong-ling

Related Institution

School of Resources and Safty Engineering, China University of Mining and Technology(Beijing)

School of Safty Science＆Engineering, Henan Institute of Engineering

State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining and Technology

College of Sciences, Anhui University of Science & Technology

State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

AI问答

⁰