Numerical Simulation of Fracturing Wells Considering Desorption and Diffusion Effect for Shale Gas with Gas-Water Two Phases

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  • 1.Southwest Petroleum University,Chendu 610500,China;
    2.Jiudong Operortion Area,Yumen Oilfield Company,Jiuquan 735000,China

Received date: 2014-09-25

  Revised date: 2014-12-23

  Online published: 2015-09-10

Abstract

Hydraulic fracturing is an essential technology to stimulate shale reservoirs,and accurate prediction of fractured shale gas well productivity is the basic for the efficient development of shale gas reservoir.This paper establishes a gas-water two-phase percolation mathematical model under the condition of desorption and diffusion by means of numerical simulation and calculation method.And the numerical model is given in this paper.By means of the simulator for post-fracturing performance of the shale gas reservoir is developed,and quantitative analysis of the influence of fracture parameters,physical parameters and desorption diffusion parameters to fractured shale gas well production is investigated.The research results show that hydraulic fracturing improves single well production,and it′s an effective measure to develop shale gas.Therefore the induced hydraulic fracture conductivity and natural fracture permeability are the main influence factors on shale gas production,and the higher the induced fracture conductivity and natural fracture permeability,the higher the gas and water production rate.Relatively speaking,the matrix permeability and diffusion coefficients have less effect on production.

Cite this article

ZHAO Jin-zhou,ZHOU Lian-lian,MA Jian-jun,LI Yong-ming . Numerical Simulation of Fracturing Wells Considering Desorption and Diffusion Effect for Shale Gas with Gas-Water Two Phases[J]. Natural Gas Geoscience, 2015 , 26(9) : 1640 -1645 . DOI: 10.11764/j.issn.1672-1926.2015.09.1640

References

[1]Li Jianzhong,Dong Dazhong,Chen Gengsheng,et al.Prospects and strategic position of shale gas resources in China[J].Natural Gas Industry,2009,29(5):11-16.[李建忠,董大忠,陈更生,等.中国页岩气资源前景与战略地位[J].天然气工业,2009,29(5):11-16.]
[2][ZK(]Qian Bozhang,Zhu Jianfang.Shale gas development:Today and tomorrow[J].Natural Gas Technology,2010,4(2):11-13.[钱伯章,朱建芳.页岩气开发的现状和前景[J].天然气技术,2010,4(2):11-13.]
[3][JP2]Qiu Zhen,Zou Caineng,Li Jianzhong,et al.Unconventional petroleum resources assessment:Progress and future prospects[J].Natural Gas Geoscience,2013,24(2):238-246.[邱振,邹才能,李建忠,等.非常规油气资源评价进展与未来展望[J].天然气地球科学,2013,24(2):238-246.]
[4]Wang Xiang,Liu Yuhua,Zhang Min,et al.Conditions offormation and accumulation for shale gas[J].Natural Gas Geoscience,2010,21(2):350-356.[王祥,刘玉华,张敏,等.页岩气形成条件及成藏影响因素研究[J].天然气地球科学,2010,21(2):350-356]
[5]Wang Weifeng,Liu Peng,Chen Chen,et al.The study of shale gas reservoir theory and resources evaluation[J].Natural Gas Geoscience,2013,24(3):429-438.[王伟锋,刘鹏,陈晨,等.页岩气成藏理论及资源评价方法[J].天然气地球科学,2013,24(3):429-438.]
[6]Mcdanlel B W,Surjaatmdja J B,Sutherland R J,et al.Evolving New Stimulation Process Proves Highly Effective in Level 1 Dual-Lateral Completion[R].SPE Eastern Regional Meeting held in Lexington,Kentucky,October 23-26 2006.SPE 78697,2006.
[7][JP2]Schein G W,Weiss S.Simultaneous fracturing takes off:Enormous multiwall fracs maximize exposure to shale reservoirs,achieving more production sooner[J].Hart′s E & P,2008,81(3):55-56.
[8]Maxwell S C,Waltman C K,Warpinski N R,et al.Imaging Seismic Deformation Induced by Hydraulic Fracture Complexity[R].SPE Annual Technical Conference and Exhibition held in San Antonio,Texas,September 24-27 2006.SPE 102801,2006.
[9][JP2]Duan Yonggang,Li Jianqiu.Transient pressure analysis of infinite conductivity fractured wells for shale gas[J].Natural Gas Industry,2010,30(3):26-29.[段永刚,李建秋.页岩气无限导流压裂井压力动态分析[J].天然气工业,2010,30(3):26-29.]
[10]Li Yongming,Yao Fengsheng,Zhao Jinzhou,et al.Shale gas reservoir nanometer-pore microscopic seepage dynamic research[J].Science Technology and Engineering,2013,13(10):2657-2661.[李勇明,姚锋盛,赵金洲,等.页岩气藏纳米孔隙微观渗流动态研究[J].科学技术与工程,2013,13(10):2657-2661.]
[11]Du Dianfa,Wang Yanyan,Zhang Qiong,et al.A comprehensive seepage model of shale gas reservoir and pressure behavior analysis[J].Natural Gas Geoscience,2014,25(4):612-617.[杜殿发,王妍妍,张琼,等.页岩气藏综合渗流模型及压力动态分析[J].天然气地球科学,2014,25(4):612-617.]
[12]Guo Xiao,Wang Weifeng.Seepage mechanism and transient pressure analysis of shale gas[J].Jaournal of Applied Mathematics,2013,4(1):197-203.
[13]Zhou Yulong,Zhang Liehui,Zhao Jinzhou.“Triple porosity” model of transient well test and rate decline analysis for multi-fractured horizontal well in shale gas reservoirs[J].Journal of Petroleum Science and Engineering,2013,110:253-262.
[14]OzkanE,Raghavan R.Modeling of Fluid Transfer From Shale Matrix to Fracture Network[R].SPE Annual Technical Conference and Exhibition,19-22 September,Florence,Italy.SPE 134830,2010.
[15]Han Dakuang,Chen Qinlei,Yan Cunzhang.The Basis for Reservoir Numerical Simulation[M].Beijing:Petroleum Industry Press,1999.[韩大匡,陈钦雷,闫存章.油藏数值模拟基础[M].北京:石油工业出版社,1999.]

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