Study on Experiment Conditions of Seepage Law of Marine Shale Gas
Received date: 2014-12-02
Revised date: 2015-03-09
Online published: 2015-06-10
Two methods to hold the experiment pressure were adopted to select the best condition for testing the gas seepage law of the marine shale gas core in south China,which are constant confining pressure mode and constant net confining pressure mode.The influence of different confining pressure mode on the experiment results was analyzed.And the best mode was selected under the actual formation condition.The conclusions show that gas flow rate increases with the injection pressure,whatever by the way of constant confining pressure or constant net confining pressure.The gas seepage law curve of the marine shale gas core in south China is nonlinear.The curve is divided into two regions including segment curve and pseudo linear curve,and the inflection points are 1MPa and 1.3MPa,respectively.The values of average permeability damage rate are 52.41% and 40.56%,respectively.The slip effect was affected by the confining pressure control mode.The change of injection pressure caused stress sensitivity,and the stress sensitivity effect was more obvious in the actual formation under the constant confining pressure.The influence of the slip effect on seepage law of marine shale gas is more than the stress sensitivity under the condition of low effective stress.A complete seepage law curve can be obtained,and a period of the seepage situation in the formation can be simulated under the constant net confining pressure.The results provide meaningful guidance for the gas field.The net confining pressure mode was also affected by the confining pressure,and the flow rate would decrease with the increase of the confining pressure.Above all,the net confining pressure is the best way to test the seepage law of the marine shale gas core in south China.
ZHU Wei-yao，TIAN Wei，GAO Ying，DENG Jia，ZHANG Xue-ling，QI Qian，MA Qian . Study on Experiment Conditions of Seepage Law of Marine Shale Gas[J]. Natural Gas Geoscience, 2015 , 26(6) : 1106 -1112 . DOI: 10.11764/j.issn.1672-1926.2015.06.1106
［1］Li Taiwei,Guo Hekun,Li Haibo,et al.Research on movable fluids in shale gas reservoirs with NMR technology［J］.Special Oil and Gas Reservoirs,2012,19(1):107-109.［李太伟,郭和坤,李海波,等.应用核磁共振技术研究页岩气储层可动流体［J］.特种油气藏,2012,19(1):107-109.］
［2］Yao Tongyu,Huang Yanzhang,Li Jishan.Flow regim for shale gas in extra low permeability porous media［J］.Chinese Journal of Theoretical and Applied Mechanics,2012,44(6):990-995.［姚同玉,黄延章,李继山.页岩气在超低渗介质中的渗流行为［J］.力学学报,2012,44(6):990-995.］
［3］Song Hongqing,Liu Qipeng,Yu Mingxu,et al.Characteristics of gas flow and productivity of fractured wells in shale gas sediments［J］.Journal of University of Science and Technology Beijing,2014,36(2):139-144.［宋洪庆,刘启鹏,于明旭,等.页岩气渗流特征及压裂井产能［J］.北京科技大学学报,2014,36(2):139-144.］
［4］Li Yazhou,Li Yongming,Luo Pan,et al.Study on seepage mechanism and productivity of shale gas［J］.Fault-Block Oil & Gas Field,2013,20(2):186-190.［李亚洲,李勇明,罗攀,等.页岩气渗流机理与产能研究［J］.断块油气田,2013,20(2):186-190.］
［5］Li Zhiping,Li Zhifeng.Dynamic characteristics of shale gas flow on nanoscale pores［J］.Natural Gas Industry,2012,32(4):50-53.［李治平,李智锋.页岩气纳米级孔隙渗流动态特征［J］.天然气工业,2012,32(4):50-53.］
［6］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.］
［7］Li Zhifeng,Li Zhiping,Miao Lili,et al.Gas flow characteristic 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.］
［8］Yu Rongze,Zhang Xiaowei,Bian Yanan,et al.Low mechanism of shale gas reservoirs and influential factors of their productivity［J］.Natural Gas Industry,2012,32(9):10-15.［于荣泽,张晓伟,卞亚南,等.页岩气藏流动机理与产能影响因素分析［J］.天然气工业,2012,32(9):10-15.］
［9］Wei Yun,Zhao Zhibin.Percolation mechanism of shale gas［J］.Liaoning Chemical Industry,2013,42(2):152-153.［魏云,赵自斌.页岩气藏的渗流机理［J］.辽宁化工,2013,42(2):152-153.］
［10］Ning Zhengfu,Wang Bo,Yang Feng,et al.Microscale effect of microvadose in shale reservoirs［J］.Petroleum Exploration and Development,2014,41(4):445-452.［宁正福,王波,杨峰,等.页岩储集层微观渗流的微尺度效应［J］.石油勘探与开发,2014,41(4):445-452.］
［11］Yang Feng,Ning Zhengfu,Hu Changpeng,et al.Characterization of microscopic pore structures in shale reservoirs［J］.Acta Petrolei Sinica,2013,34(2):301-311.［杨峰,宁正福,胡昌蓬,等.页岩储层微观孔隙结构特征［J］.石油学报,2013,34(2):301-311.］
［12］Guo Yinghai,Zhao Difei.The micro-heterogeneity characteristic of pores and fissures in marine shale gas reservoir［J］.Journal of China University of Mining & Technology,2015,44(2):250-257.［郭英海,赵迪斐.微观尺度海相页岩气储层微观非均质性研究［J］.中国矿业大学学报,2015,44(2):250-257.］
［13］Wang Jilin,Liu Guijian,Wang Weizhong,et al.Characteristics of pore-fissure and permeability of shales in the Longmaxi Formation in southeastern Sichuan Basin［J］.Journal of China Coal Society,2013,38(5):772-777.［汪吉林,刘桂建,王维忠,等.川东南龙马溪组页岩孔裂隙及渗透性特征［J］.煤炭学报,2013,38(5):772-777.］
［14］Xiong Wei,Gao Shusheng,Hu Zhiming,et al.An experimental study on the percolation characteristics of single phase gas in low and ultra-low permeability sandstone gas reservoirs［J］.Natural Gas Industry,2009,29(9):75-77.［熊伟,高树生,胡志明,等.低、特低渗透砂岩气藏单相气体渗流特征实验［J］.天然气工业,2009,29(9):75-77.］
［15］Ruan Min,Wang Liangang.Low permeability oilfield development and pressure sensitive effect［J］.Acta Petrolei Sinica,2002,23(3):73-76.［阮敏,王连刚.低渗透油田开发与压敏效应［J］.石油学报,2002,23(3):73-76.］
［16］Liu Jianjun,Liu Xiangui.The effect of effective pressure on porosity and permeability of low permeability porous media［J］.Journal of Geomechanics,2001,7(1):41-44.［刘建军,刘先贵.有效应力对低渗透多孔介质孔隙度、渗透率的影响［J］.地质力学学报,2001,7(1):41-44.］
［17］Kang Yili,Zhang Hao,Chen Yijian,et al.Comprehensive research of tight sandstones gas reservoirs stress sensitivity in Daniudi Gasfield［J］.Natural Gas Geoscience,2006,17(3):335-338.［康毅力,张浩,陈一健,等.鄂尔多斯盆地大牛地气田致密砂岩气层应力敏感性综合研究［J］.天然气地球科学,2006,17(3):335-338.］
［18］Jones F O.A laboratory study of the effect of confining pressure on fracture flow and storage capacity in carbonate rock［J］.Journal of Petroleum Technology,1975,21(2):21-27.
［19］Li Daqi,Kang Yili,You Lijun.Experimental study on permeability stress sensitivity of carbonate rocks[J］.Natural Gas Geoscience,2014,25(3):409-413.［李大奇,康毅力,游利军.碳酸盐岩储层渗透率应力敏感性实验研究［J］.天然气地球科学,2014,25(3):409-413.］
［20］Tian Wei,Zhu Weiyao,Zhu Huayin,et al.The selection of confining pressure mode in starting pressure test for tight sandstone［J］.Special Oil and Gas Reservoirs,2014,21(2):107-110.［田巍,朱维耀,朱华银,等.致密砂岩启动压力测试中围压模式的优选［J］.特种油气藏,2014,21(2):107-110.］
［21］Ali H S,Al-Marhoun M A,Abu-Khamsin S A,et al.The Effect of Overburden Pressure on Relative Permeability［R］.Middle East Oil Show,7-10 March,Bahrain.SPE 15730,1987.
［22］He Wenxiang,Yang Le,Ma Chaoya,et al.Effect of micro-pore structure parameter on seepage characteristics in ultra-low permeability reservoir:A case from Chang 6 reservoir of Ordos Basin［J］.Natural Gas Geoscience,2011,22(3):477-481.［何文祥,杨乐,马超亚,等.特低渗透储层微观孔隙结构参数对渗流行为的影响——以鄂尔多斯盆地长6储层为例［J］.天然气地球科学,2011,22(3):477-481.］
［23］Tian Wei,Zhu Weiyao,Zhu Huayin,et al.Influencing factors of threshold pressure gradient value for tight sandstone［J］.Fault-Block Oil & Gas Field,2014,21(5):611-614.［田巍,朱维耀,朱华银,等.致密砂岩启动压力梯度数值的影响因素［J］.断块油气田,2014,21(5):611-614.］
［24］He Jingang,Kang Yili,You Lijun,et al.Effects of mineral composition and microstructure on stress sensitivity of mudrocks［J］.Natural Gas Geoscience,2012,23(1):129-134.［何金钢,康毅力,游利军,等.矿物成分和微结构对泥质岩储层应力敏感性的影响［J］.天然气地球科学,2012,23(1):129-134.］
［25］Li Min,Xiao Wenlian,Zhao Chunlan,et al.Net stress can not be used to evaluate the stress sensitivity in the low permeability sandstone［J］.Journal of Southwest Petroleum University:Science & Technology Edition,2009,31(5):183-186.［李闽,肖文联,赵春兰,等.不能用净应力评价低渗砂岩岩石应力敏感性［J］.西南石油大学学报:自然科学版,2009,31(5):183-186.］
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