Pressure Transient Analysis of Fractured Horizontal Well in Composite Shale Gas Reservoir
Received date: 2015-02-01
Revised date: 2015-04-04
Online published: 2015-12-10
As a significant index to evaluate the development of shale gas reservoirs,stimulated reservoir volume(SRV)has a great impact on pressure responses.We present a composite reservoir model where inner region and outer region are both regarded as dual porosity media to take into account of the effect of SRV.Multiple migration mechanisms of shale gas were also considered including desorption,diffusion and seepage.Line source function,Laplace transformation and the principle of superposition were used to obtain pressure responses of fractured horizontal well in composite shale gas reservoirs.Then the impact of wellbore storage and skin factor were considered by the Duhamel principle.Applying Stehfest numerical inversion algorithm,the bottom-hole pressure in real time domain can be calculated.Type curves were plotted and different flow regimes were identified.The effects of SRV radius,fracture number,fracture half length,facture spacing,diffusion coefficient,storability coefficient,adsorption index,permeability coefficient and mobility ratio on pressure responses were investigated.This model is more comprehensive and the results can provide more accurate instructions for economic reservoir development.
JIANG Rui-zhong,TENG Wen-chao,QIAO Xin,XU Jian-chun,SUN Zhao-bo,GAO Yi-hua,FAN Haijun . Pressure Transient Analysis of Fractured Horizontal Well in Composite Shale Gas Reservoir[J]. Natural Gas Geoscience, 2015 , 26(12) : 2336 -2342 . DOI: 10.11764/j.issn.1672-1926.2015.12.2336
[1]Yan Cunzhang,Huang Yuzhen,Ge Chunmei,et al.Shale gas:Enormous potential of unconventional natural gas resources[J].Natural Gas Industry,2009,29(5):1-6.[闫存章,黄玉珍,葛春梅,等.页岩气是潜力巨大的非常规天然气资源[J].天然气工业,2009,29(5):1-6.]
[2]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.]
[3]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.]
[4]Wang Feiyu,He Zhiyong,Meng Xiaohui,et al.Occurrence of shale gas and prediction of original gas in-place (OGIP)[J].Natural Gas Geoscience,2011,22(3):501-510.[王飞宇,贺志勇,孟晓辉,等.页岩气赋存形式和初始原地气量(OGIP)预测技术[J].天然气地球科学,2011,22(3):501-510.]
[5]Li Zhifeng,Li Zhiping,Miao Lili,et al.Gas flow characteristics in nanoscale pores of shale gas[J].Natural Gas Geoscience,2013,24(5):1042-1047.[李智锋,李治平,苗丽丽,等.页岩气藏纳米孔隙气体渗流特征分析[J].天然气地球科学,2013,24(5):1042-1047.]
[6]Wang Yonghui,Lu Yongjun,Li Yongping,et al.Progress and application of hydraulic fracturing technology in unconventional reservoir[J].Acta Petrolei Sinica,2012,33(supplement1):149-158.[王永辉,卢拥军,李永平,等.非常规储层压裂改造技术进展及应用[J].石油学报,2012,33(S1):149-158.]
[7]Tang Ying,Zhang Jinchuan,Zhang Qin,et al.An analysis of hydraulic fracturing technology in shale gas wells and its application[J].Natural Gas Industry,2010,30(10):33-38.[唐颖,张金川,张琴,等.页岩气井水力压裂技术及其应用分析[J].天然气工业,2010,30(10):33-38.]
[8]Hou Bing,Chen Mian,Li Zhimeng,et al.Propagation area evaluation of hydraulic fracture networks in shale gas reservoirs[J].Petroleum Exploration and Development,2014,41( 6):763-768.[侯冰,陈勉,李志猛,等.页岩储集层水力裂缝网络扩展规模评价方法[J].石油勘探与开发,2014,41(6):763-768.]
[9]Li Yongming,Peng Yu,Wang Zhongze.Analysis of shale gas fracture stimulation mechanism and operating techniques[J].Journal of Southwest Petroleum University,2013,35(2):90-96.[李勇明,彭瑀,王中泽.页岩气压裂增产机理与施工技术分析[J].西南石油大学学报,2013,35(2):90-96.]
[10]Bello R O,Watenbargen R A.Multi-stage Hydraulically Fractured Horizontal Shale Gas Well Rate Transient Analysis[R].North Arica Technical Conference and Exhibition.Cairo,Egypt.SPE Paper 126754.2010.
[11]Crosby D G,Rahman M M,Rahman M K,et al.Single and multiple transverse fracture initiation from horizontal wells[J].Journal of Petroleum Science and Engineering,2002,35 (3/4):191-204.
[12]Medeiros F,Ozkan E,Kazemi H.Productivity and drainage area of fractured horizontal wells in tight gas reservoirs[J].SPE Reservoir Evaluation & Engineering,2008,11(5):902-911.
[13]Wang H T.Performance of multiple fractured horizontal wells in shale gas reservoirs with consideration of multiple mechanisms[J].Journal of Hydrology,2014,510:299-312.
[14]Ren Junjie,Guo Ping,Wang Delong,et al.Productivity model of fractured horizontal wells in shale gas reservoirs and analysis of influential factors[J].Journal of Northeast Petroleum University,2012,36(6):76-81.[任俊杰,郭平,王德龙,等.页岩气藏压裂水平井产能模型及影响因素[J].东北石油大学报,2012,36(6):76-81.]
[15]Ozkan E,Brown M,Raghavan R.,et al.Comparison of Fractured Horizontal-well Performance in Conventional and Unconventional Reservoirs[R].SPE Western Regional Meeting,San Jose,California,USA.SPE Paper 121290.2009.
[16]Stalgorova E,Mattar L.Practical Analytical Model to Simulate Production of Horizontal Wells with Branch Fractures[R].SPE Canadian Unconventional Resource Conference,Calgary,Alberta,Canada.SPE 162515.2012.
[17]Zhao Y L,Zhang L H,Zhao J Z,et al.“Triple porosity” modeling 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.
[18]Van-Everdingen A F,Hurst W.The application of the Laplace transformation to flow problem in reservoirs[J].Journal of Petroleum Technology,1949,1(12):305-324.
[19]Stehfest H.Numerical inversion of Laplace transform[J].Communications of the ACM,1970,13(1):47-49.
/
〈 |
|
〉 |