伊通盆地莫里青断陷地层压力演化与油气运移模拟
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摘要
应用钻井测试资料、地震资料和盆地模拟技术对伊通盆地莫里青断陷地层压力演化史和油气运移史进行了研究。莫里青断陷地层压力经历了3次"幕式"聚集与释放,压力演化与构造运动关系密切;莫里青断陷现今地层压力以常压为主,局部残留弱超压;岩相、沉积速率、生烃作用及断裂活动对地层压力差异分布有重要的影响;莫里青断陷超压释放期油气运移活跃,超压释放为油气运移提供了驱动力;渐新世中晚期是莫里青断陷油气运移的主要时期;尖山构造带和靠山凹陷处于双阳组油气运移的有利指向区;靠山凹陷西北部油气成藏条件优越,油气富集程度较高,是研究区油气勘探的有利区带。
Based on the drilling test data and seismic data,the basin modeling technique is applied to reconstruct the pressure evolution history and hydrocarbon migration in the Moliqing fault-depression in the Yitong Basin.Three episodic accumulations and releases of pressure occurred in the Moliqing fault-depression,and the excess pressure evolution has a close relation to tectonic movements.The formation pressure distribution is characterized by normal pressure in almost the entire fault-depression with weak residual overpressure locally.The difference of pressure distribution is mainly caused by the rock facies,sedimentation rate,hydrocarbon generation and fault activities.The hydrocarbon migration is more active during the release of the pressure,which mainly happened during the middle-late Oligocene and provided the driving force for hydrocarbon migration.The hydrocarbon migration was directed to the Shuangyang Formation within the Jianshan uplift and the Kaoshan Sag.With the good conditions of hydrocarbon accumulation and higher hydrocarbon concentration,the northwest part of the Kaoshan Sag is considered as a favorable area for the oil and gas exploration in the Moliqing fault-depression.
Based on the drilling test data and seismic data,the basin modeling technique is applied to reconstruct the pressure evolution history and hydrocarbon migration in the Moliqing fault-depression in the Yitong Basin.Three episodic accumulations and releases of pressure occurred in the Moliqing fault-depression,and the excess pressure evolution has a close relation to tectonic movements.The formation pressure distribution is characterized by normal pressure in almost the entire fault-depression with weak residual overpressure locally.The difference of pressure distribution is mainly caused by the rock facies,sedimentation rate,hydrocarbon generation and fault activities.The hydrocarbon migration is more active during the release of the pressure,which mainly happened during the middle-late Oligocene and provided the driving force for hydrocarbon migration.The hydrocarbon migration was directed to the Shuangyang Formation within the Jianshan uplift and the Kaoshan Sag.With the good conditions of hydrocarbon accumulation and higher hydrocarbon concentration,the northwest part of the Kaoshan Sag is considered as a favorable area for the oil and gas exploration in the Moliqing fault-depression.
引文
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[19]谢文彦,姜建群,史建南,等.大民屯凹陷压力场演化及其成藏意义[J].石油学报,2004,25(6):48-52.Xie Wenyan,Jiang Jianqun,Shi Jiannan,et al.Evolution of geopressure field in Damintun Sag and its significance on hydrocarbon accumulation[J].Acta Petrolei Sinica,2004,25(6):48-52.
[20]陈红汉,叶加仁,孙家振,等.伊通盆地构造、沉积及油气成藏综合评价[R].武汉:中国地质大学(武汉)资源学院石油系,2008.Chen Honghan,Ye Jiaren,Sun Jiazhen,et al.The integrated evaluation on the tectonic,sedimentation and hydrocarbon accumulation within the Yitong Basin[R].Wuhan:Department of Petroleum in the Faculty of Earth Resources,China University of Geosciences,2008.
[21]Sclater J G,Christie P A F.Continental stretching:An explanation of the post-mid-Cretaceous subsidence of the central North Sea Basin[J].Journal of Geophysical Research,1980,85:3711-3739.
[22]Lerche I.Basin analysis:Quantitative methods[M].San Diego:Academic Press,1990.
[23]董伟良,张启明.中国含油气盆地中的超压体系[J].石油学报,2000,21(6):1-11.Dong Weiliang,Zhang Qiming.Overpressure system of hydrocarbon-bearing basins in China[J].Acta Petrolei Sinica,2000,21(6):1-11.
[24]付广,吕延防,薛永超,等.泥岩盖层压力封闭的演化特征及其研究意义[J].石油学报,2000,21(3):41-44.Fu Guang,LüYanfang,Xue Yongchao,et al.Evolution characteristics of pressure sealing of mudstone caprock and its research significance[J].Acta Petrolei Sinica,2000,21(3):41-44.
[25]曹强,叶加仁.伊通盆地莫里青断陷地温-地压系统与油气成藏关系[J].海洋地质与第四纪地质,2007,27(3):99-104.Cao Qiang,Ye Jiaren.Relation between geothermal-geopressure system and petroleum accumulation of Moliqing rift in Yitong Basin[J].Marine Geology&Quaternary Geology,2007,27(3):99-104.
[2]刘鸿友,彭苏萍,魏志平,等.伊通地堑原油特征与成熟度[J].石油勘探与开发,2002,29(3):21-24.Liu Hongyou,Peng Suping,Wei Zhiping,et al.Characteristics and maturity of crude oil in Yitong graben[J].Petroleum Exploration and Development,2002,29(3):21-24.
[3]邓守伟,曹强,叶加仁.伊通盆地莫里青断陷烃源岩特征及生排烃史[J].地质科技情报,2007,26(6):66-70.Deng Shouwei,Cao Qiang,Ye Jiaren.Characteristics and hydrocarbon generation-expulsion histories of source rocks in Moliqing rift of Yitong Basin[J].Geological Science and Technology Information,2007,26(6):66-70.
[4]段海岗,潘校华,罗曼,等.南里海盆地下库拉凹陷异常高压与油气成藏[J].石油勘探与开发,2009,36(4):487-493.Duan Haigang,Pan Xiaohua,Luo Man,et al.Abnormally high pressure and hydrocarbon accumulation in the lower Kura Sag,South Caspian Basin[J].Petroleum Exploration and Development,2009,36(4):487-493.
[5]张守春,张林晔,查明,等.东营凹陷压力系统发育对油气成藏的控制[J].石油勘探与开发,2010,37(3):289-296.Zhang Shouchun,Zhang Linye,Zha Ming,et al.Control of pressure system development on reservoir formation in the Dongying Sag,Shengli Oilfield,East China[J].Petroleum Exploration and Development,2010,37(3):289-296.
[6]Schegg R,Cornford C,Leu W.Migration and accumulation of hydrocarbons in the Swiss Molasse Basin:Implications of a2D basin modeling study[J].Marine and Petroleum Geology,1999,16(6):511-531.
[7]Vannucchi P.Monitoring paleo-fluid pressure through vein microstructures[J].Journal of Geodynamics,2001,32(4/5):567-581.
[8]Ye J R,Hao F,Chen J Y.Development of overpressure in the Tertiary Damintun depression,Liaohe basin,northern China[J].Acta Geologica Sinica:English Edition,2003,77(3):402-412.
[9]Fillippone W R.Estimation of formation parameters and the prediction of overpressures from seismic data[J].Geophysics,1983,48(4):482-483.
[10]刘震,张万选,张厚福,等.辽西凹陷北洼下第三系异常地层压力分析[J].石油学报,1993,14(1):14-23.Liu Zhen,Zhang Wanxuan,Zhang Houfu,et al.An analysis of abnormal formation pressures of Paleogene in the north sag of Liaoxi depression[J].Acta Petrolei Sinica,1993,14(1):14-23.
[11]Roedder E,Bodnor R J.Geological pressure determinations from fluid inclusion studies[J].Annual Review of Earth Planetary Science,1980,8:263-301.
[12]Aplin A C,Larter S R,Bigge M A.PVTX history of the North Sea’s Judy oilfield[J].Journal of Geochemical Exploration,2000,69-70:641-644.
[13]Swarbrick R E,Osborne M J,Grunberger D,et al.Integrated study of the Judy Field(Block30/7a):An overpressured central North Sea oil/gas field[J].Marine and Petroleum Geology,2000,17(9):993-1010.
[14]米敬奎,肖贤明,刘德汉,等.利用储层流体包裹体的PVT特征模拟计算天然气藏形成古压力:以鄂尔多斯盆地上古生界深盆气藏为例[J].中国科学:D辑,2003,33(7):679-685.Mi Jingkui,Xiao Xianming,Liu Dehan,et al.Using the PVT data in the oil inclusion of reservoir to calculate the paleopressure when the gas accumulated:Take the Palaeozoic deep basin gas accumulation in Ordos basin for example[J].Science in China:Series D,2003,33(7):679-685.
[15]邹海峰.大港探区前第三系古流体和古温压特征及演化[D].长春:吉林大学,2000.Zou Haifeng.The characteristic and evolution of palaeofluid,palaeotemperature and palaeopressure from the pre-Tertiary in the Dagang exploration area[D].Changchun:Jilin University,2000.
[16]刘福宁.异常高压区的古沉积厚度和古地层压力恢复方法探讨[J].石油与天然气地质,1994,15(2):180-185.Liu Funing.An approach to reconstruction of paleo-sedimentary thickness and paleo-formation pressure in abnormal high pressure region[J].Oil&Gas Geology,1994,15(2):180-185.
[17]李善鹏,邱楠生.利用盆地模拟方法分析昌潍坳陷古压力[J].新疆石油学院学报,2003,15(4):5-8.Li Shanpeng,Qiu Nansheng.Analyzing the paleopressure of Changwei depression by the use of basinmodeling method[J].Journal of Xinjiang Petroleum Institute,2003,15(4):5-8.
[18]解习农,焦赳赳,熊海河.松辽盆地十屋断陷异常低压体系及其成因机制[J].地球科学:中国地质大学学报,2003,29(5):589-595.Xie Xinong,Jiao Jiujiu,Xiong Haihe.Underpressure system and forming mechanism in the Shiwu depression of Songliao basin[J].Earth Science:Journal of China University of Geosciences,2003,29(5):589-595.
[19]谢文彦,姜建群,史建南,等.大民屯凹陷压力场演化及其成藏意义[J].石油学报,2004,25(6):48-52.Xie Wenyan,Jiang Jianqun,Shi Jiannan,et al.Evolution of geopressure field in Damintun Sag and its significance on hydrocarbon accumulation[J].Acta Petrolei Sinica,2004,25(6):48-52.
[20]陈红汉,叶加仁,孙家振,等.伊通盆地构造、沉积及油气成藏综合评价[R].武汉:中国地质大学(武汉)资源学院石油系,2008.Chen Honghan,Ye Jiaren,Sun Jiazhen,et al.The integrated evaluation on the tectonic,sedimentation and hydrocarbon accumulation within the Yitong Basin[R].Wuhan:Department of Petroleum in the Faculty of Earth Resources,China University of Geosciences,2008.
[21]Sclater J G,Christie P A F.Continental stretching:An explanation of the post-mid-Cretaceous subsidence of the central North Sea Basin[J].Journal of Geophysical Research,1980,85:3711-3739.
[22]Lerche I.Basin analysis:Quantitative methods[M].San Diego:Academic Press,1990.
[23]董伟良,张启明.中国含油气盆地中的超压体系[J].石油学报,2000,21(6):1-11.Dong Weiliang,Zhang Qiming.Overpressure system of hydrocarbon-bearing basins in China[J].Acta Petrolei Sinica,2000,21(6):1-11.
[24]付广,吕延防,薛永超,等.泥岩盖层压力封闭的演化特征及其研究意义[J].石油学报,2000,21(3):41-44.Fu Guang,LüYanfang,Xue Yongchao,et al.Evolution characteristics of pressure sealing of mudstone caprock and its research significance[J].Acta Petrolei Sinica,2000,21(3):41-44.
[25]曹强,叶加仁.伊通盆地莫里青断陷地温-地压系统与油气成藏关系[J].海洋地质与第四纪地质,2007,27(3):99-104.Cao Qiang,Ye Jiaren.Relation between geothermal-geopressure system and petroleum accumulation of Moliqing rift in Yitong Basin[J].Marine Geology&Quaternary Geology,2007,27(3):99-104.
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