[1]朱启朋,桑树勋,刘世奇,等.煤储层渗透率动态变化模型与模拟研究[J].西安科技大学学报,2015,(01):9-14.[doi:10.13800/j.cnki.xakjdxxb.2015.0102]
 ZHU Qi-peng,SANG Shu-xun,LIU Shi-qi,et al.Dynamic variation model of reservior permeability during the development of coalbed methane[J].Journal of Xi'an University of Science and Technology,2015,(01):9-14.[doi:10.13800/j.cnki.xakjdxxb.2015.0102]
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煤储层渗透率动态变化模型与模拟研究(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2015年01期
页码:
9-14
栏目:
出版日期:
2015-02-28

文章信息/Info

Title:
Dynamic variation model of reservior permeability during the development of coalbed methane
文章编号:
1672-9315(2015)01-0009-06
作者:
朱启朋1桑树勋2刘世奇2舒 姚1
1.四川省煤田地质局 一三七队,四川 达州 635000;
2.中国矿业大学 资源与地球科学学院,江苏 徐州 221116
Author(s):
ZHU Qi-peng1SANG Shu-xun2LIU Shi-qi2SHU Yao1
1.137 Geological Team,Sichuan Coalfield Geology Bureau,Dazhou 635000,China;
2. School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,China
关键词:
煤储层 渗透率 模型 模拟 动态变化
Keywords:
coalbed reservoir permeability model imitation dynamic variation
分类号:
P 618
DOI:
10.13800/j.cnki.xakjdxxb.2015.0102
文献标志码:
A
摘要:
为深入认识开发过程中煤储层渗透率的动态变化特征,修正前人基于有效应力与煤基质收缩耦合影响的煤储层孔隙度和渗透率动态变化理论模型,应用沁水盆地南部生产区块煤层气排采数据及煤储层相关参数,模拟研究区煤层气开发过程中煤储层孔隙度和渗透率动态变化特征,并进行了储层参数敏感性分析。研究表明:煤储层孔隙度和渗透率动态变化具有明显的阶段性,需要建立分阶段预测模型; 排采制度合理的情况下,煤储层孔隙度和渗透率会经历先降低后升高的阶段,且随着储层压力的降低,克林肯伯格效应作用明显,气相渗透率增加,煤储层渗透率改善效果明显好于孔隙度改善效果; 煤储层渗透率动态变化明显,受控于孔隙压缩系数、弹性模量和朗格缪尔体积,以弹性模量的影响最为显著。
Abstract:
To understand dynamic variation character of reservior permeability indevelopment process,revising predecessors's theoretical model on porosity and permeability which takes effective stress and shrinkage of coal matrix into account,applying CBM wells production data and the relevant parameters of coal reservoir in Fanzhuang block,the paper simulated dynamic variation character of reservior permeability and porosity,and analyzed reservior parameter's sensitivity.The analysis showed that dynamic variation of reservior porosity and permeability is staged and staging prediction model should be built; Under the condition of reasonable drainage system,reservior porosity and permeability will reduce first and rise then; With the loss of the reservoir pressure,the Klinkenberg effect becomes obvious,and the gas-phase permeability increases,and permeability's amplification exceeds porosity's; Dynamic variation of reservior porosity and permeability is influenced by pore compressibility,modulus of elasticity and Langmuir volume,especially modulus of elasticity.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目:国家自然科学基金项目(41272154); 国家自然科学基金青年科学基金(51104148) <
通讯作者:朱启朋(1988-),男,河南新乡人,硕士,助理工程师,E-mail:zhuqipeng.happy@163.com
更新日期/Last Update: 2015-01-15