冀中坳陷霸县凹陷文安斜坡潜山油气成藏模式与勘探发现
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摘要
利用已钻井资料及高精度叠前时间偏移三维地震资料,对冀中坳陷文安斜坡基岩结构特征、潜山内幕反射结构和已钻井分析表明,斜坡南段潜山内幕寒武系发育有多套储盖组合,油源来自霸县洼槽下第三系沙河街组和孔店组,大断层面、不整合面和渗透层构成油气运移通道。构建了"坡腹层状古储古堵古盖油气藏"潜山内幕成藏新模式,并发现落实了一批潜山内幕圈闭,优选钻探文古3井,于下寒武统府君山组获得高产工业油气流。回顾了构建潜山成藏新模式和文古3潜山油藏的勘探发现历程,并描述了该油藏的基本特征。
Based on the analysis of the textures and characteristics of the basement rock,the seismic reflection features of buried hills and drilling and logging data,it is known that three sets of source-reservoir-caprock assemblages develop from the top to the bottom in Cambrian inner buried hills of Wen'an Slop,Jizhong Depression.Hydrocarbon derives from Paleogene Shahejie and Kongdian source rocks and the permeable large fault planes and unconformable planes work as the pathways of hydrocarbon migration.After a new hydrocarbon accumulation model of inner buried-hills is recommended,a group of buried-hill traps were discovered in Wen'an slope.A risk prospecting well,Well Weng'an-3,was elected to drill and high-yielded commercial oil flew was obtained in the lower Cambrian Fujunshan buried-hill carbonate reservoir.The history how to set up the new model and to prospect and discover the Weng'an-3 reservoir is reviewed and the basic characteristics of the reservoir also depicted.
Based on the analysis of the textures and characteristics of the basement rock,the seismic reflection features of buried hills and drilling and logging data,it is known that three sets of source-reservoir-caprock assemblages develop from the top to the bottom in Cambrian inner buried hills of Wen'an Slop,Jizhong Depression.Hydrocarbon derives from Paleogene Shahejie and Kongdian source rocks and the permeable large fault planes and unconformable planes work as the pathways of hydrocarbon migration.After a new hydrocarbon accumulation model of inner buried-hills is recommended,a group of buried-hill traps were discovered in Wen'an slope.A risk prospecting well,Well Weng'an-3,was elected to drill and high-yielded commercial oil flew was obtained in the lower Cambrian Fujunshan buried-hill carbonate reservoir.The history how to set up the new model and to prospect and discover the Weng'an-3 reservoir is reviewed and the basic characteristics of the reservoir also depicted.
引文
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[2]华北石油会战指挥部石油勘探开发研究院,渤海湾地区石油地质研究所.渤海湾地区古潜山油、气田[M].北京:石油化学工业出版社,1978
[3]苏立萍,罗平,胡社荣,等.苏桥潜山带奥陶系碳酸盐岩储集层研究[J].石油勘探与开发.2003,30(6):54-57.
[4]肖丽华,孟元林,李臣,等.冀中坳陷文安斜坡古生界成藏史分析[J].石油勘探与开发.2004,31(2):43-45.
[5]郑亚斌,郑文兵,苑艳普,等.古潜山内幕油藏勘探[J].中国科技信息,2005,(22):96-98.
[6]杜金虎,邹伟宏,费宝生,等.冀中拗陷古潜山复式油气聚集区[M].北京:科学出版社,2002:457-474,601-603.
[7]费宝生,汪建红.中国海相油气田勘探实例之三:渤海湾盆地任丘古潜山大油田的发现与勘探[J].海相油气地质,2005,10(3)42-50.
[8]邹伟宏,张放,崔占堂,等.冀中油气区中元古—古生界及沉积环境[M].北京:石油工业出版社,2001:135-140.
[9]余家仁,陶洪兴,樊哲仁,等.华北潜山油藏碳酸盐岩储集层研究[M].北京:石油工业出版社,1993:50-60.
[10]高现俊,史英龙,张志国,等.叠前时间偏移特色配套处理技术研究及其在华北油田的应用[J].中国石油勘探,2008,13(2):45-52
[11]赵贤正,金凤鸣,王余泉,等.冀中坳陷长洋淀地区“古储古堵”潜山成藏模式[J].石油学报,2008,4(2)489-493.
[12]高程军,陈科贵,卫扬安,等.碳酸盐岩储层测井与录井评价技术[M].北京:石油工业出版社,2007.
[13]卢学军,刘华,王建瑞,等.渤海湾盆地霸县凹陷疏导体系与新近系油气运移特征[J].石油实验地质,2010,32(2):258-261.
[14]赵贤正,金凤鸣,王权,等.中国东部超深超高温碳酸盐岩潜山油气藏的发现及关键技术——以渤海湾盆地冀中坳陷牛东1潜山油气藏为例[J].海相油气地质2011,16(4):1-10.
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