页岩气水平井组产量递减特征及动态监测
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摘要
国内外页岩气田大量采用水平井组开发模式,在提高了生产效率的同时也降低了管理成本。基于页岩气藏特殊渗流机理及解吸扩散规律,建立了页岩气多级压裂水平井渗流数学模型,并分析了其不稳定产量递减规律,结合平台式水平井组生产方式,模拟了水平井组内多井生产情况并分析了多井干扰对于水平井组生产效果的影响,进一步明确了在井组内存在不同井数和井距情况下的生产动态特征。通过多种方法对比,认为精细化的数值模拟法适用于页岩气水平井组的产量递减分析,并在此基础上进一步探索性地提出了页岩气水平井组动态监测方案。研究结果为页岩气水平井组开发技术政策制定及动态分析方法优选提供了借鉴。
Fractured horizontal well platform has been widely used in shale gas reservoirs' develop for its production efficiency and cost controlling improvement.This paper presents a transient analysis model of multi-stage fractured horizontal well with the consideration of special flow mechanism and diffusion characteristic in shale,simulated platform production with multiple-well inside,analyzed multiple-well interference.With the research,the characteristic of horizontal well group with different well number and well space has been established.The precise numerical simulation has been provided to analyze fractured horizontal well platform in shale.According to the defect of single well dynamic monitoring,an improved dynamic monitoring of platform in shale has been presented.The result of this paper can provide technical support for development of fractured horizontal well platform in shale gas reservoirs,improve the exploration of development mode choice and dynamic analysis method research.
Fractured horizontal well platform has been widely used in shale gas reservoirs' develop for its production efficiency and cost controlling improvement.This paper presents a transient analysis model of multi-stage fractured horizontal well with the consideration of special flow mechanism and diffusion characteristic in shale,simulated platform production with multiple-well inside,analyzed multiple-well interference.With the research,the characteristic of horizontal well group with different well number and well space has been established.The precise numerical simulation has been provided to analyze fractured horizontal well platform in shale.According to the defect of single well dynamic monitoring,an improved dynamic monitoring of platform in shale has been presented.The result of this paper can provide technical support for development of fractured horizontal well platform in shale gas reservoirs,improve the exploration of development mode choice and dynamic analysis method research.
引文
[1]Zhang Weidong,Guo Min,Yang Yanhui.Shalegas drilling technologies at a glance[J].Sino-Global Engery,2010,15(6):35-40.张卫东,郭敏,杨延辉.页岩气钻采技术综述[J].中外能源,2010,15(6):35-40.
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[12]Li Guofeng.Optimization and application of integral fracturing monitoring method of cluster horizontal well group[J].Journal of Chongqing University of Sience and Technology,2014,16(3):23-28.李国锋.丛式水平井组整体压裂裂缝监测方案优选及应用[J].重庆科技学院学报:自然科学版,2014,16(3):23-28.
[13]Guo Jianchun,Zhou Xinhao,Deng Yan.Distribution rules of earth stress during zipper fracturing of shale gas horizontal cluster wells[J].Natural Gas Industry,2015,35(7):44-48.郭建春,周鑫浩,邓燕.页岩气水平井组拉链压裂过程中地应力的分布规律[J].天然气工业,2015,35(7):44-48.
[14]Lv Yumin,Liu Yinghong,Qu Yingjie et al.Evaluation on factors to influence production capacity differences of coalbed methane well group[J].Coal Science and Technology,2015,43(12):80-84.吕玉民,柳迎红,曲英杰,等.煤层气井组产能差异的影响因素评价[J].煤炭科学技术,2015,43(12):80-84.
[15]Stehfest H.Numerical inversion of Laplace transform[J].Communications of the ACM,1970,13(1):47-49.
[16]Everdingen V,Hurst A F.The application of laplace transformation flow problems in reservoirs[J].Trans.AIME,1949,186:305-324.
[17]Liu Haixin.Role of microseism in shale-gas horizontal well fracturing[J].Journal of Jianghan Petroleum University of Stall and Workers,2016,29(2):17-21.刘海鑫.微地震在页岩气水平井压裂中的作用[J].江汉石油职工大学学报,2016,29(2):17-21.
[2]Arps J J.Analysis of decline curves[J].Trans.AIME,1945,(160):228-247.
[3]Guo J J,Zhang L H,Wang H T,et al.Pressure transient analysis for multi-stage fractured horizontal well in shale gas reservoirs[J].Transport in Porous Media,2012,106(3):635-653.
[4]Eric S C,James C M.Devonian Shale Gas Production:Mechanisms and Simple Models[C].Paper SPE 19311presented at the 1989SPE Eastern Regional Meeting held in Morgantown,WV,USA,21-23October,1989.
[5]Medeiros F,Kurtoglu B,Ozkan E.Analysis of Production Data From Hydraulically Fractured Horizontal Wells in Shale Reservoirs[C].Paper SPE 110848presented at the SPE Annual Technical Conference and Exhibition held in Anaheim,California,USA,11-14November,2012.
[6]Miao Heping,Wang Hongxun.Improvement of production and fracture number after hydrofracturing[J].Oil Drilling&Prouction Techology,1992,14(6):51-56.苗和平,王鸿勋.水平井压后产量预测及裂缝数优选[J].石油钻采工艺,1992,14(6):51-56.
[7]Lang Zhaoxin,Zhang Linhua,Cheng Linsong.Investigation on prodectivity of fractured horziontal well[J].Journal of the University of Petroleum:Edition of Natural Science,1994,18(2):43-46.郎兆新,张丽华,程林松.压裂水平井产能研究[J].石油大学学报:自然科学版,1994,18(2):43-46.
[8]Yang Long,Wang Xiaodong,Han Yongxin.Study of production decline cruve for wells with vertical fractures[J].Natural Gas Industry,2003,13(3):76-79.杨龙,王晓东,韩永新.垂直裂缝井产量递减曲线研究[J].天然气工业,2003,12(3):76-79.
[9]Li Jianqiu,Cao Jianhong,Duan Yonggang et al.Seepage mechanism and productivity decline of shale-gas well[J].Natural Gas Exploration&Development,2011,34(2):34-37.李建秋,曹建红,段永刚,等.页岩气井渗流机理及产能递减分析[J].天然气勘探与开发,2011,34(2):34-37.
[10]Zhang Diqiu,Li Zhiping,Su Hao.Production decline trend of shale gas[J].Lithologic Reservoirs,2015,27(6):138-144.张荻萩,李治平,苏皓.页岩气产量递减规律研究[J].岩性油气藏,2015,27(6):138-144.
[11]Zhang Xiaotao,Wu Jianfa,Feng Xi,et al.Numerical simulation of seepage flow characteristics of multi-stage fracturing(MSF)in horizontal shalge gas wells[J].Natural Gas Industry,2013,33(3):47-52.张小涛,吴建发,冯曦,等.页岩气藏水平井分段压裂渗流特征数值模拟[J].天然气工业,2013,33(3):47-52.
[12]Li Guofeng.Optimization and application of integral fracturing monitoring method of cluster horizontal well group[J].Journal of Chongqing University of Sience and Technology,2014,16(3):23-28.李国锋.丛式水平井组整体压裂裂缝监测方案优选及应用[J].重庆科技学院学报:自然科学版,2014,16(3):23-28.
[13]Guo Jianchun,Zhou Xinhao,Deng Yan.Distribution rules of earth stress during zipper fracturing of shale gas horizontal cluster wells[J].Natural Gas Industry,2015,35(7):44-48.郭建春,周鑫浩,邓燕.页岩气水平井组拉链压裂过程中地应力的分布规律[J].天然气工业,2015,35(7):44-48.
[14]Lv Yumin,Liu Yinghong,Qu Yingjie et al.Evaluation on factors to influence production capacity differences of coalbed methane well group[J].Coal Science and Technology,2015,43(12):80-84.吕玉民,柳迎红,曲英杰,等.煤层气井组产能差异的影响因素评价[J].煤炭科学技术,2015,43(12):80-84.
[15]Stehfest H.Numerical inversion of Laplace transform[J].Communications of the ACM,1970,13(1):47-49.
[16]Everdingen V,Hurst A F.The application of laplace transformation flow problems in reservoirs[J].Trans.AIME,1949,186:305-324.
[17]Liu Haixin.Role of microseism in shale-gas horizontal well fracturing[J].Journal of Jianghan Petroleum University of Stall and Workers,2016,29(2):17-21.刘海鑫.微地震在页岩气水平井压裂中的作用[J].江汉石油职工大学学报,2016,29(2):17-21.