含水煤岩渗透率演化规律及动态滑脱效应的作用机制

doi:10.13722/j.cnki.jrme.2021.0531

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (710 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to explore the evolution of permeability of coal with different water contents under the combined effect of effective stress and dynamic slippage，a gas-containing coal thermal-fluid-solid triaxial servo seepage device was used to measure the permeability of coal in the effective stress rise process under different water contents. A coal permeability model was established considering the effective stress，the water content and the dynamic slippage effect. The seepage characteristics and dynamic slippage effects of coal were further analyzed under different effective stresses and water contents. The research results show that，when the water content is a constant，the coal permeability decreases exponentially with increasing the effective stress，and that，when the effective stress is a constant，the greater the water content，the lower the coal permeability. A dynamic slippage factor model considering the changes of the effective stress and the water content is established. Under the conditions of various water contents，the coal fissure channels are gradually closed with increasing the effective stress and, at the same time，the slippage factor shows an increasing trend. In addition，under the same effective stress，the slippage factor increases with the water content，specifically，a slow increase while the water content less than 1.80% and then a sharp rise. A permeability model of water-bearing coal was constructed and its reliability was verified. The contribution of the slippage effect to the permeability was further quantified. A permeability model of coal considering the difference of fracture shapes in actual reservoirs was proposed. The permeability characteristics of coal under dry conditions were studied. The permeability of coal with circular fractures is the smallest，followed by square fractures and equilateral triangle fractures. The research on the migration law of coalbed methane in reservoir under the comprehensive action of multiple factors is helpful for improving the recovery of coalbed methane.

Key words： rock mechanics coal water content slippage effect permeability model effective stress

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	DUAN Shulei1
	LI Bobo1
	2
	3
	LI Jianhua1
	GAO Zheng1
	CHENG Qiaoyun1
	XU Jiang4

Cite this article:

DUAN Shulei1,LI Bobo1,2, et al. Permeability evolution of water-bearing coal considering dynamic slippage effect[J]. , 2022, 41(4): 798-808.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0531 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/I4/798

[1]	邹才能，杨智，黄士鹏，等. 煤系天然气的资源类型、形成分布与发展前景[J]. 石油勘探与开发，2019，46(3)：433-442.(ZOU Caineng，YANG Zhi，HUANG Shipeng，et al. Resource types，formation，distribution and prospects of coal-measure gas[J]. Petroleum Exploration and Development，2019，46(3)：433-442.(in Chinese))
[2]	李立功，康天合，李彦斌. 考虑动态克林伯格系数的煤储层渗透率预测模型[J]. 地球物理学报，2018，61(1)：304-310.(LI Ligong，KANG Tianhe，LI Yanbin. Prediction model of permeability in coal reservoirs considering the dynamic Klinkenberg coefficient[J]. Chinese Journal of Geophysics，2018，61(1)：304-310.(in Chinese))
[3]	魏建平，位乐，王登科. 含水率对含瓦斯煤的渗流特性影响试验研究[J]. 煤炭学报，2014，39(1)：97-103.(WEI Jianping，WEI Le，WANG Dengke. Experimental study of moisture content influences on permeability of coal containing gas[J]. Journal of China Coal Society，2014，39(1)：97-103.(in Chinese))
[4]	SHI J Q，DURUCAN S. Changes in permeability of coal beds during primary recovery—part 1：Model formulation and analysis[C]// Proceedings of the Coal bed Methane Symposium. Tuscaloosa，Alabama：University of Alabama，2003：341.
[5]	WANG S G，DEREK E，LIU J S. Permeability evolution in fractured coal: The roles of fracture geometry and water-content[J]. International Journal of Coal Geology，2011，87(1)：13-25.
[6]	THARAROOP P，KAPPYN Z T，ERTEKIN T. Development of a material balance equation for coalbed methane reservoirs accounting for the presence of water in the coal matrix and coal shrinkage and swelling[J]. Journal of Unconventional Oil and Gas Resources，2015，9：153-162.
[7]	刘永茜，张浪，李浩荡，等. 含水率对煤层气渗流的影响[J]. 煤炭学报，2014，39(9)：1 840-1 844.(LIU Yongqian，ZHANG Lang，LI Haodang，et al. Effect of moisture content on CBM seepage[J]. Journal of China Coal Society，2014，39(9)：1 840-1 844.(in Chinese))
[8]	CONNELL L D. A new interpretation of the response of coal permeability to changes in pore pressure，stress and matrix shrinkage[J]. International Journal of Coal Geology，2016，162：169-182.
[9]	MCKEE C R，BUMB A C，KOENING R A. Stress-dependent permeability and porosity of coal[C]// Geology and Coal-bed Methane Resources of the Northern San Juan Basin. Colorado：Rocky Mountain As-sociation of Geologists Guidebook，1988：143-153.
[10]	XU H，TANG D Z，TANG S H，et al. A dynamic prediction model for gas-water effective permeability based on coalbed methane production data[J]. International Journal of Coal Geology，2014，121：44-52.
[11]	CHENG G X，JIANG B，LI M，et al. Effects of pore fracture structure of ductile tectonically deformed coals on their permeability：An experimental study based on raw coal cores[J]. Journal of Petroleum Science and Engineering，2020，193：231-246.
[12]	祝捷，王学，于鹏程，等. 有效应力对煤样变形和渗透性的影响研究[J]. 岩石力学与工程学报，2017，36(9)：2 213-2 219.(ZHU Jie，WANG Xue，YU Pengcheng，et al. Study on the effect of effective stress on deformation and permeability of coal samples[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(9)：2 213- 2 219.(in Chinese))
[13]	MOGHADAM A A，CHALATURNYK R. Expansion of the Klinkenberg’s slippage equation to low permeability porous media[J]. International Journal of Coal Geology，2014，123：2-9.
[14]	ZHANG S J，SANG Q，DONG M Z. Experimental study of pressure sensitivity in shale rocks: Effects of pore shape and gas slippage[J]. Journal of Natural Gas Science and Engineering，2021，89：103885.
[15]	JAVADPOUR F. Nanopores and apparent permeability of gas flow in mudrocks(Shales and Siltstone)[J]. Journal of Canadian Petroleum Technology，2009，48(8)：16-21.
[16]	东振，申瑞臣，薛华庆，等. 考虑滑脱效应的低阶煤动态渗透率预测新模型[J]. 岩土力学，2019，40(11)：4 270-4 278.(DONG Zhen，AHEN Ruichen，XUE Huaqing，et al. A new model for predicting low-rank coal dynamic permeability considering slippage effect[J]. Rock and Soil Mechanics，2019，40(11)：4 270-4 278.(in Chinese))
[17]	SI L L，LI Z H，YANG Y L. Evolution characteristics of gas permeability under multiple factors[J]. Transport in Porous Media，2019，127：415-432.
[18]	GHANIZADEH A，GASPARIK M，AMANN H A，et al. Experimental study of fluid transport processes in the matrix system of the European organic-rich shales：II.Posidonia Shale(Lower Toarcian，northern Germany)[J]. International Journal of Coal Geology，2014，123：20-33.
[19]	许江，彭守建，尹光志，等. 含瓦斯煤热流固耦合三轴伺服渗流装置的研制及应用[J]. 岩石力学与工程学报，2010，29(5)：907-914.(XU Jiang，PENG Shoujian，YIN Guangzhi，et al. Development and application of triaxial servocontrolled seepage device equipment for Thermal-Fluid-Solid coupling of coal containing methane[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(5)：907-914.(in Chinese))
[20]	LI B B，REN C H，WANG Z H，et al. Experimental study on damage and the permeability evolution process of methane-containing coal under different temperature conditions[J]. Journal of Petroleum Science and Engineering，2020，184：106509.
[21]	CHEN D，PAN Z J，LIU J S，et al. Modeling and simulation of moisture effect on gas transport in coal seams[J]. Energy and Fuels，2012，26(3)：1 695-1 706.
[22]	LIU S M，HARPALANI S. A new theoretical approach to model sorption-induced coal shrinkage or swelling[J]. AAPG Bulletin，2013，97：1 033-1 049.
[23]	李波波，成巧耘，李建华，等. 含水煤岩裂隙压缩特征及渗透特性研究[J]. 岩石力学与工程学报，2020，39(10)：2 069-2 078.(LI Bobo，CHENG Qiaoyun，LI Jianhua，et al. Study on fracture compression and permeability of coal with different moisture contents[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(10)：2 069-2 078.(in Chinese))
[24]	GUO P K，CHENG Y P，JIN K，et al. Impact of effective stress and matrix deformation on the coal fracture permeability[J]. Transport in Porous Media，2014，103：99-115.
[25]	BIOT M A. General theory of three-dimensional consolidation[J]. Applied Physics，1941，12(2)：155-164.
[26]	CONNELL L D，LU M，PAN Z J. An analytical coal permeability model for tri-axial strain and stress conditions[J]. International Journal of Coal Geology，2010，84(2)：103-114.
[27]	DAWSON G K W，GOLDING S D，ESTERLE J S，et al. Occurrence of minerals within fractures and matrix of selected Bowen and Ruhr Basin coals[J]. International Journal of Coal Geology，2012，94：150-166.
[28]	KLINKRNBERG L J. The permeability of porous media to liquids and gases[J]. API Drilling and Production Practice，1941，23(2)：200-213.
[29]	RANDOLPH P L，SOEDER D J，CHOWDIAH P. Porosity and permeability of tight sands[C]// SPE Unconventional Gas Recovery Symposium. Pittsburgh：Society of Petroleum Engineers，1984：13-15.
[30]	陈明义. 煤-气-水耦合作用下低阶烟煤力学损伤及渗透率演化机制研究[博士学位论文][D]. 徐州：中国矿业大学，2017.(CHEN Mingyi. Study on damage and permeability evolution mechanism of low rank bituminous coal under coupling effects of coal，gas and water[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2017.(in Chinese))
[31]	LEVINE J R. Model study of the influence of matrix shrinkage on absolute permeability of coal bed reservoirs[J]. Geological Society London Special Publications，1996，10919(1)：197-212.
[32]	聂百胜，柳先锋，郭建华，等. 水分对煤体瓦斯解吸扩散的影响[J].中国矿业大学学报，2015，44(5)：781-787.(NIE Baisheng，LIU Xianfeng，GUO Jianhua，et al. Effect of moisture on gas desorption and diffusion in coal mass[J]. Journal of China University of Mining and Technology，2015，44(5)：781-787.(in Chinese))
[33]	蒋长宝，段敏克，尹光志，等. 不同含水状态下含瓦斯原煤加卸载试验研究[J]. 煤炭学报，2016，41(9)：2 230-2 237.(JIANG Changbao，DUAN Minke，YIN Guangzhi，et al. Loading-unloading experiments of coal containing gas under the condition of different moisture contents[J]. Journal of China Coal Society，2016，41(9)：2 230-2 237.(in Chinese))
[34]	LIU T，LIN B Q，YANG W. Impact of matrix-fracture interactions on coal permeability：Model development and analysis[J]. Fuel，2017，207：522-532.
[35]	王环玲，徐卫亚，巢志明，等. 致密岩石气体渗流滑脱效应试验研究[J]. 岩土工程学报，2016，38(5)：777-785.(WANG Huanling，XU Weiya，CHAO Zhiming，et al. Experimental study on slippage effects of gas flow in compact rock[J]. Chinese Journal of Geotechnical Engineering，2016，38(5)：777-785.(in Chinese))
[36]	李波波，李建华，杨康，等. 考虑水分影响的煤岩渗透率模型及演化规律[J]. 煤炭学报，2019，44(11)：3 396-3 403.(LI Bobo，LI Jianhua，YANG Kang，et al. Coal permeability model and evolution law considering water influence[J]. Journal of China Coal Society，2019，44(11)：3 396-3 403.(in Chinese))
[37]	MENG Y，LI Z P. Triaxial experiments on adsorption deformation and permeability of different sorbing gases in anthracite coal[J]. Journal of Natural Gas Science and Engineering，2017，46：59-70.
[38]	陈代珣. 渗流气体滑脱现象与渗透率变化的关系[J]. 力学学报，2002，34(1)：96-100.(CHEN Daixun. Gas slippage phenomenon and change of permeability when gas flowes in tight porous media[J]. Acta Mechanica Sinica，2002，34(1)：96-100.(in Chinese))
[39]	杨昌永，常会珍，邵显华，等. 扫描电镜下不同煤体结构煤微孔隙特征研究[J]. 煤炭科学技术，2019，47(12)：194-200.(YANG Changyong，CHANG Huizhen，SHAO Xianhua，et al. Study on micro-pore characteristics of structural coal in different coal bodies under scanning electron microscopy[J]. Coal Science and Technology，2019，47(12)：194-200.(in Chinese))
[40]	LI J，CHEN Z X，WU K L，et al. Effect of water saturation on gas slippage in circular and angular pores[J]. American Institute of Chemical Engineers，2018，64：3 529-3 541.
[41]	SI L L，LI Z H，YANG Y L. Influence of the pore geometry structure on the evolution of gas permeability[J]. Transport in Porous Media，2018，123：321-339.