|本期目录/Table of Contents|

[1]张波,谢雄刚.煤层气开采过程中渗透率模型比较研究[J].中国安全生产科学技术,2018,14(9):50-54.[doi:10.11731/j.issn.1673-193x.2018.09.008]
　ZHANG Bo,XIE Xionggang.Comparative study on permeability models in coalbed methane exploitation[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(9):50-54.[doi:10.11731/j.issn.1673-193x.2018.09.008]
点击复制

煤层气开采过程中渗透率模型比较研究
分享到：

《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
14
期数:
2018年9期
页码:
50-54
栏目:
学术论著
出版日期:
2018-09-30

文章信息/Info

Title:
Comparative study on permeability models in coalbed methane exploitation
文章编号:
1673-193X(2018)-09-0050-05
作者:
张波1; 谢雄刚1; 2
（1.贵州大学 矿业学院，贵州 贵阳 550025；2.喀斯特地区优势矿产资源高效利用国家地方联合工程实验室，贵州 贵阳 550025）
Author(s):
ZHANG Bo1;  XIE Xionggang1; 2
(1. Mining College, Guizhou University, Guiyang Guizhou 550025, China; 2. National & Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas, Guiyang Guizhou 550025, China)
关键词:
煤层气开采; 渗透率模型; 水平有效应力; 孔隙压力; 吸附瓦斯膨胀应力
Keywords:
coalbed methane exploitation;  permeability model;  horizontal effective stress;  pore pressure;  adsorbed gas expansion stress
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2018.09.008
文献标志码:
A
摘要:
为了得到煤层气开采过程中渗透率的准确预测模型，分析了不同泊松比和孔隙压力下的储层孔隙率变化规律，通过理论分析对4种经典渗透率模型进行了比较研究。研究结果表明： P&M模型和C&B模型对泊松比敏感度较小，改进P&M模型和S&D模型对泊松比敏感度较大；改进P&M模型能有效反映渗透率变化趋势，在p＜1.4 MPa和p＞4.1 MPa时k/k0数值拟合度较高；P&M模型和S&D模型不能准确描述p＜1.4 MPa时k/k0变化情况，而在p＞1.4MPa时k/k0数值拟合度较高；煤层渗透率随孔隙压力增大表现为“U”型趋势，包含低孔隙压力骤减区、中孔隙压力稳定区和高孔隙压力稳步升高区3个阶段，改进P&M和S&D模型更能表现煤层气渗透率随孔隙压力变化趋势。
Abstract:
In order to obtain an accurate prediction model of permeability in the exploitation process of coalbed methane, the change laws of reservoir porosity under different Poisson's ratios and pore pressures were studied, and four classical permeability models were compared by the theoretical analysis. The results showed that the P&M model and C&B model were less sensitive to the Poisson's ratio, while the improved P&M and S&D model were more sensitive to the Poisson's ratio. The improved P&M model could effectively reflect the change trend of permeability, and the k/k0 numerical fitness were higher when p<1.4 MPa and p>4.1 MPa. The P&M model and S&D model could not accurately describe the change of k/k0 when p<1.4 MPa, however, the k/k0 numerical fitness was higher when p>1.4 MPa. The permeability of coal seam presented an “U” shape trend with the increase of pore pressure, including three stages of low pore pressure sharp reduction zone, medium pore pressure stability zone and high pore pressure steady rise zone. The improved P&M model and S&D model were more able to express the change trend of coalbed methane permeability with pore pressure.

参考文献/References:

［1］李辛子，王运海，姜昭琛，等.深部煤层气勘探开发进展与研究［J］.煤炭学报，2016，41(1) : 24-31. LI Xinzi, WANG Yunhai, JIANG Zhaoshen，et al. Progress and research on deep coalbed methane exploration and development ［J］.Journal of China Coal Society, 2016, 41(1): 24-31.
［2］袁亮，薛俊华，张农，等.煤层气抽采和煤与瓦斯共采关键技术现状与展望［J］.煤炭科学技术，2013，41(9)：6-11. YUAN Liang，XUE Junhua，ZHANG Nong，et al. Current status and prospects of key technologies for coalbed methane extraction and coal and gas co-production［J］. Coal Science and Technology, 2013, 41(9): 6-11.
［3］PALMER I, MANSOORI J. How permeability depends on stress and pore pressure incoalbeds: A new model［J］. SPE Reservoir Evaluation & Engineering, 1996, 1(6):539-544.
［4］PAIMER I. Permeability changes in coal: Analytical modeling［J］. International Journal of Coal Geology, 2009, 77(1):119-126.
［5］CLARKSON C R, JORDAN C L, GIERRHART RR, et al. Production data analysis of coalbed-methane wells［J］. SPE Reservoir Evaluation & Engineering, 2008, 11(2):311-325.
［6］CLARKSON C R, PAN Z, PALMER I, et al. Predicting sorption-induced strain and permeability increase with depletion for CBM reservoirs［J］. SPE Journal, 2010, 15(1):152-159.
［7］SHI J Q, DURUCAN S. Drawdown induced changes in permeability ofcoalbeds: A new interpretation of the reservoir response to primary recovery［J］. Transport in Porous Media, 2004, 56(1):1-16.
［8］SHI J Q, DURUCAN S. Exponential growth in San Juan Basinfruitland coalbed permeability with reservoir drawdown: Model match and new insights［J］. SPE Reservoir Evaluation & Engineering, 2010, 13(6):914-925.
［9］SHI J Q, DURUCAN S.Modelling laboratory horizontal stress and coal permeability data using S&D permeability model［J］. International Journal of Coal Geology, 2014, 131:172-176.
［10］CUI X, BUSTIN R M. Volumetric strain associated with methane desorption and its impact oncoalbed gas production from deep coal seams［J］. Aapg Bulletin, 2005, 89(89):1181-1202.
［11］肖伟晶, 王晓军, 李士超,等. 渗透压力作用下岩石三轴压缩过程变形特性分析［J］. 中国安全生产科学技术, 2017，13(12):38-42. XIAO Weijing, WANG Xiaojun, LI Shichao, et al. Analysis of deformation characteristics of rock under triaxial compression under osmotic pressure ［J］. Journal of Safety Science and Technology, 2017, 13 (12): 38-42.
［12］张波，谢雄刚，刘洋成.基于热流固耦合工作面前方瓦斯渗流数值模拟［J］ .中国安全生产科学技术，2018，14（3）：89-94. ZHANG Bo，XIE Xionggang，LIU Yangcheng.Numerical simulation on gas seepage in front of working face based on fluid-solid-heat coupling［J］. Journal of Safety Science and Technology,2018,14(3):89-94.
［13］COLETTA M, SICCO M. Permeability increase in Bowen Basin coal as a result of matrix shrinkage during primary depletion［J］. International Journal of Coal Geology, 2012, 96-97(6):109-119.
［14］MITRA A，HARPALANI S, LIU S. Laboratory measurement and modeling of coal permeability with continued methane production: Part 1-laboratory results［J］. Fuel, 2012, 94(1):110-116.
［15］MITRA A，HARPALANI S, LIU S. Laboratory measurement and modelling of coal permeability with continued methane production: Part 2-laboratory results［J］. Fuel, 2012, 94(1):117-124.

相似文献/References:

备注/Memo

备注/Memo:
收稿日期： 2018-07-02；数字出版日期：2019-09-19
基金项目： 国家自然科学基金项目（51864009）；贵州省科技厅项目（黔科合支撑［2017］2821）；贵州省科技厅社发攻关项目（黔科合SY字［2015］3001）
作者简介： 张波，硕士研究生，主要研究方向为矿山安全与灾害防治。
通信作者： 谢雄刚，博士，教授，主要研究方向为煤矿安全开采技术和煤与瓦斯突出灾害防治。
更新日期/Last Update: 2018-10-09