Experimental research on influence of low temperature on coal permeability

YANG Zhao-zhong; ZHANG Yun-peng; JIA Min; LI Xiao-gang; WEI Zhuo; ZHANG Lu

doi:10.16285/j.rsm.2017.02.007

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Experimental research on influence of low temperature on coal permeability

更新时间：2026-06-25

- Experimental research on influence of low temperature on coal permeability
- Vol. 38, Issue 2, Pages: 354-360(2017)
- 作者机构：
  
  1. 西南石油大学油气藏地质及开发工程国家重点实验室,四川,成都,610500
  2. 中海油能源发展股份有限公司工程技术分公司,天津,300452
  3. 中国石油大学（北京）石油工程学院,北京,102249
  4. 中海石油（中国）有限公司天津分公司渤海石油研究院,天津,300452
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.02.007
  CLC： TU452
- Online First：05 June 2018，
  
  Published：2017
- 稿件说明：
移动端阅览
YANG Zhao-zhong, ZHANG Yun-peng, JIA Min, et al. Experimental research on influence of low temperature on coal permeability[J]. 2017, 38(2): 354-360.
DOI：

YANG Zhao-zhong, ZHANG Yun-peng, JIA Min, et al. Experimental research on influence of low temperature on coal permeability[J]. 2017, 38(2): 354-360. DOI： 10.16285/j.rsm.2017.02.007.

摘要

液氮压裂过程向地层注入液氮而产生的低温会对煤层岩石造成破坏，导致煤层渗透率升高。为揭示液氮注入地层过程对煤层渗透率影响的规律，采用压力脉冲衰减法开展了低温处理前、后煤岩渗透率测试试验。对比干燥与饱水煤岩在不同处理温度下的渗透率测试结果，-10、-25、-40 ℃及液氮（-195.8 ℃）低温处理30 min都会导致煤岩渗透率升高，饱水煤岩渗透率升高幅度高于干燥煤岩；随着处理温度的降低，煤岩渗透率升高幅度变大，拟合得到了渗透率升高率与煤岩处理温度之间的指数关系。通过试验结果分析，详细论述了低温导致煤岩破坏并提高煤层渗透率的原理。

Abstract

Liquid nitrogen fracturing is a technique using liquid nitrogen as a fracturing fluid to stimulate the reservoir. During the treatment of liquid nitrogen fracturing

the cryogenic nitrogen is injected into formation

which leads coal rocks damage and increases coal rocks permeability. To reveal the laws of permeability variation after cryogenic nitrogen injection

the permeability tests are conducted on coal rocks before and after cryogenic treatment with pressure pulse decay method. By comparing the permeability results of dry and saturated coal rocks at different temperatures

it is found that the permeabilities of coal rock are all improved after 30 minutes cryogenic treatment respectively at -10 ℃

-25 ℃

-40 ℃ and liquid nitrogen (-195.8 ℃). Saturated coal rocks have a higher increasing rate of permeability than dry coal rocks. With the decrease of temperature

the permeability of coal rocks increases by a large amplitude. An exponential relation between the increasing rate of coal rock permeability and the temperature is obtained. The test results are analyzed to reveal the principles of coal rocks damage and permeability enhance influenced by low temperature.

关键词

Keywords

references

Views

501

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Improved apparent permeability model based on equivalent fractures and variable slip effects analysis

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

Related Author

XIAO Zhi-yong

WANG Gang

LIU Jie

DENG Hua-feng

ZHENG Cheng-cheng

JIANG Feng

TIAN Kun-yun

ZHANG Rui-lin

Related Institution

Key Laboratory of Geological Hazards in Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University

School of Civil Engineering, Fujian University of Technology

Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology

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

School of Safty Science＆Engineering, Henan Institute of Engineering

AI问答

⁰