阿克库勒凸起古生界油气输导体系及运移脊线
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摘要
勘探成果表明,阿克库勒凸起受长期多次构造叠加影响,具有长期生烃、多期供烃的烃源特征,古生界油气输导体系复杂。在分析输导路径、输导能力及作用的基础上,将其分成断裂型、不整合型、岩溶网络型3类输导系统。利用地震和钻井资料恢复古地貌,分析输导体系的演化及配置关系,认识油气运移的动态过程,指出区域性深大断裂是油气垂向运移的主要通道,不整合面(T74、T07、T60)的叠置是油气侧向运移的关键因素,并且油气成藏关键时刻古构造脊线的展布特征决定了油气优先运移的方向和路径。由断层-不整合面-岩溶网络组成的"层-面-网"复式输导系统相互匹配,沿构造脊线呈立体网状阶梯式运移是研究区古生界油气输导体系最鲜明的特点。
The consequence of exploration shows the Akekule lobe has complicated pathway systems and resource rocks which have been providing hydrocarbon in Paleozoic due to many tectonic movements during the long period.On the basis of analyzing route,capability and function of path systems,the systems can be divided into three types,i.e.,fault,unconformity and karst network.By reconstructing the paleo tectonic structure with seismic data and well information and recognizing the dynamic process of oil-gas migration,the research points out that the local big faults are the main paths of vertical hydrocarbon transportation.The research also concludes that the superposition of unconformities(T47,T07,T06)are the key factors of horizontal hydrocarbon migration,furthermore,the geometrical formation during the critical period of hydrocarbon gathering,especially the distribution of paleo ridge,determines the predominant direction and path of hydrocarbon migration.The types of pathway systems of hydrocarbon migration by fault-unconformity-karst network along structure ridge in the form of three-dimensional ladder-shaped are the most distinct characteristic in work area.
The consequence of exploration shows the Akekule lobe has complicated pathway systems and resource rocks which have been providing hydrocarbon in Paleozoic due to many tectonic movements during the long period.On the basis of analyzing route,capability and function of path systems,the systems can be divided into three types,i.e.,fault,unconformity and karst network.By reconstructing the paleo tectonic structure with seismic data and well information and recognizing the dynamic process of oil-gas migration,the research points out that the local big faults are the main paths of vertical hydrocarbon transportation.The research also concludes that the superposition of unconformities(T47,T07,T06)are the key factors of horizontal hydrocarbon migration,furthermore,the geometrical formation during the critical period of hydrocarbon gathering,especially the distribution of paleo ridge,determines the predominant direction and path of hydrocarbon migration.The types of pathway systems of hydrocarbon migration by fault-unconformity-karst network along structure ridge in the form of three-dimensional ladder-shaped are the most distinct characteristic in work area.
引文
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[12]张达景,王英民,肖志高,等.塔里木盆地台盆区古生界油气输导体系与勘探方向[J].石油与天然气地质,2006,27(5):604-613.
[13]龚再升,杨甲明.油气成藏动力学及油气运移模型[J].中国海上油气(地质),1999,13(4):235-239.
[14]Chen Q,Kinzelbach W.An NMR study of single and two-phase flow in fault gouge filled fractures[J].Jour-nal of Hydrology,2002,25(6):236-245.
[2]王斌,祝春荣,丰勇.珠江口盆地番禺低隆起油气输导体系及运移脊线[J].海洋石油,2006,26(1):1-6.
[3]罗佳强,沈忠民.主运移通道控烃论[J].成都理工大学学报(自然科学版),2005,32(3):221-230.
[4]Galeazzi J S.Structural and stratigraphic evolution of the west Malvinas basin,Argentinal[J].AAPG Bulletin,1998,82(4):596-636.
[5]Hindle A D.Petroleum migration pathways and charge con-centration:a three-dimensional model[J].AAPG Bulletin,1997,81(9):1451-1481.
[6]郭维华,牟中海,赵卫军.准噶尔盆地不整合类型与油气运聚关系研究[J].西南石油学院学报,2006,28(2):1-4.
[7]刘静江,刘慧荣,谭琳,等.塔里木盆地轮南奥陶系古潜山油气成藏[J].地质科学,2004,39(4):532-542.
[8]黄志龙,柳广弟,郝石生.脉冲式混相涌流-天然气成藏的一种特殊运移方式[J].天然气工业,1998,18(2):7-9.
[9]陈强路,黄继文.塔河油田油气输导体系与运聚模式[J].新疆石油地质,2004,25(2):143-146.
[10]尹微,樊太亮,曾清波.塔里木盆地巴楚地区输导体系类型及油气成藏[J].石油实验地质,2006,28(4):340-344.
[11]赵文智,何登发,瞿辉,等.复合含油气系统中油气运移流向研究的意义[J].石油学报,2001,22(4):7-12.
[12]张达景,王英民,肖志高,等.塔里木盆地台盆区古生界油气输导体系与勘探方向[J].石油与天然气地质,2006,27(5):604-613.
[13]龚再升,杨甲明.油气成藏动力学及油气运移模型[J].中国海上油气(地质),1999,13(4):235-239.
[14]Chen Q,Kinzelbach W.An NMR study of single and two-phase flow in fault gouge filled fractures[J].Jour-nal of Hydrology,2002,25(6):236-245.
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