大港油田埕北断阶带不整合与油气运聚
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摘要
大港油田埕北断阶带存在的多个不整合对于油气的长距离、大规模运移及油气的富集,具有十分重要的作用。地震剖面综合解释显示,埕北断阶带不整合可划分为削截不整合、断褶不整合、褶皱不整合、超覆不整合和平行不整合5种类型,油气沿不整合运移的规律受不整合类型控制。在测井曲线组合对比、分析的基础上,结合岩心观察,将不整合面上、下分为三段式结构:底砾岩、风化泥岩和半风化岩石。这种结构构成油气运移的双重通道,它将不同时代的储集层、断裂等连接起来,组成区域性的运移通道网络。埕北断阶带不整合不仅是油气运移的重要通道,而且是油气聚集的有利场所,受不整合纵向结构和类型控制形成了多种类型的油气藏。
There are manyunconformitysurfaces in Chengbei fault step belt ofDagangOilfield,which are very important for hydrocarbon to migrate with long-distance and in great-scale and to accumulate.Seismic section comprehensively interpreted to discover that patterns of unconformity sections in Chengbei fault step belt include truncation unconformity,fault-fold unconformity,fold unconformity,onlap unconformity and parallel unconformity.Each of them has the different distributing regularities,and the type of unconformity surface controls hydrocarbon migration.On the basis of analyzing log responses and cores,the unconformity surfaces in vertices are divided into three parts:basal conglomerate,weathering mudstone and semi-weathering rock,this structure forms the double paths of the hydrocarbon migration.It connects reservoirs and faults which formed in different times to construct the regional migrating network.The unconformity surfaces in Chengbei fault step belt not only are the important paths for the hydrocarbon migration,but also are the good places for the hydrocarbon accumulation.The Chengbei fault step belt forms various reservoirs under the control ofthe vertical structure and types ofunconformitysurface.
There are manyunconformitysurfaces in Chengbei fault step belt ofDagangOilfield,which are very important for hydrocarbon to migrate with long-distance and in great-scale and to accumulate.Seismic section comprehensively interpreted to discover that patterns of unconformity sections in Chengbei fault step belt include truncation unconformity,fault-fold unconformity,fold unconformity,onlap unconformity and parallel unconformity.Each of them has the different distributing regularities,and the type of unconformity surface controls hydrocarbon migration.On the basis of analyzing log responses and cores,the unconformity surfaces in vertices are divided into three parts:basal conglomerate,weathering mudstone and semi-weathering rock,this structure forms the double paths of the hydrocarbon migration.It connects reservoirs and faults which formed in different times to construct the regional migrating network.The unconformity surfaces in Chengbei fault step belt not only are the important paths for the hydrocarbon migration,but also are the good places for the hydrocarbon accumulation.The Chengbei fault step belt forms various reservoirs under the control ofthe vertical structure and types ofunconformitysurface.
引文
[1]查明,吴孔友,高长海,等.埕北断坡油气富集规律与资源潜力评价.中国石油大学(华东),2006.
[1]查明,吴孔友,高长海,等.埕北断坡油气富集规律与资源潜力评价.中国石油大学(华东),2006.
[1]张克银,艾华国,吴亚军.碳酸盐岩顶部不整合面结构层及控油意义[J].石油勘探与开发,1996,23(5):16-19.
[2]艾华国,兰林英,张克银,等.塔里木盆地前石炭系顶面不整合特征及其控油作用[J].石油实验地质,1996,18(1):1-12.
[3]吴亚军,张守安,艾华国.塔里木盆地不整合类型及其与油气藏的关系[J].新疆石油地质,1998,19(2):101-105.
[4]张守安,吴亚军,佘晓宇,等.塔里木盆地不整合油气藏的成藏条件及分布规律[J].新疆石油地质,1999,20(1):15-17.
[5]付广,吕延防.油气运移通道及其对成藏的控制[J].海相油气地质,1999,4(3):24-28.
[6]陈建平,查明,柳广第,等.准噶尔盆地西北缘斜坡区不整合面在油气成藏中的作用[J].石油大学学报(自然科学版),2000,24(4):75-78.
[7]翟光明,王建军.论油气分布的有序性[J].石油学报,2000,21(1):1-9.
[8]殷敬红,张辉,昝国军,等.内蒙古东部开鲁盆地钱家店凹陷铀矿成藏沉积因素分析[J].古地理学报,2000,2(4):76-82.
[9]杨立干.金湖凹陷古近系戴一段成藏条件和成藏模式研究[J].岩性油气藏,2008,20(3):34-38.
[10]陈中红,查明,朱筱敏.准噶尔盆地陆梁隆起不整合面与油气运聚关系[J].古地理学报,2003,5(1):120-126.
[11]夏景生,王志坤,陈刚,等.东营凹陷东部深层浊积扇油藏成藏条件与模式研究[J].岩性油气藏,2009,21(1):55-60.
[12]常波涛.陆相盆地中不整合体系与油气的不均一性运移[J].石油学报,2006,27(5):19-23.
[13]Levorsen A I.Geology of Petroleum[M].San Francisco:Freeman Company,1954:618-624.
[14]Surdam R C,Crossey L J,Hagen E S,et al.Organic-inorganic in-teraction and sandstone diagenesis[J].AAPG Bulletin,1989,73(1):1-23.
[15]曹剑,胡文瑄,张义杰,等.准噶尔盆地油气沿不整合运移的主控因素分析[J].沉积学报,2006,24(3):399-405.
[16]汤良杰,金之钧,庞雄奇.多期叠合盆地油气运聚模式[J].石油大学学报(自然科学版),2000,24(4):67-70.
[17]Bethke C M,Reed J D,Oltz D F.Long-range petroleum migration in the Illinois Basin[J].AAPG Bulletin,1991,75(5):925-945.
[18]高长海,查明.不整合运移通道类型及输导油气特征[J].地质学报,2008,82(8):1113-1120.
[19]何发岐.碳酸盐岩地层中不整合—岩溶风化壳油气田——以塔里木盆地塔河油田为例[J].地质论评,2002,48(4):391-397.
[20]吴孔友,查明,洪梅.准噶尔盆地不整合结构的地球物理响应及油气成藏意义[J].石油实验地质,2003,25(4):328-332.
[1]查明,吴孔友,高长海,等.埕北断坡油气富集规律与资源潜力评价.中国石油大学(华东),2006.
[1]张克银,艾华国,吴亚军.碳酸盐岩顶部不整合面结构层及控油意义[J].石油勘探与开发,1996,23(5):16-19.
[2]艾华国,兰林英,张克银,等.塔里木盆地前石炭系顶面不整合特征及其控油作用[J].石油实验地质,1996,18(1):1-12.
[3]吴亚军,张守安,艾华国.塔里木盆地不整合类型及其与油气藏的关系[J].新疆石油地质,1998,19(2):101-105.
[4]张守安,吴亚军,佘晓宇,等.塔里木盆地不整合油气藏的成藏条件及分布规律[J].新疆石油地质,1999,20(1):15-17.
[5]付广,吕延防.油气运移通道及其对成藏的控制[J].海相油气地质,1999,4(3):24-28.
[6]陈建平,查明,柳广第,等.准噶尔盆地西北缘斜坡区不整合面在油气成藏中的作用[J].石油大学学报(自然科学版),2000,24(4):75-78.
[7]翟光明,王建军.论油气分布的有序性[J].石油学报,2000,21(1):1-9.
[8]殷敬红,张辉,昝国军,等.内蒙古东部开鲁盆地钱家店凹陷铀矿成藏沉积因素分析[J].古地理学报,2000,2(4):76-82.
[9]杨立干.金湖凹陷古近系戴一段成藏条件和成藏模式研究[J].岩性油气藏,2008,20(3):34-38.
[10]陈中红,查明,朱筱敏.准噶尔盆地陆梁隆起不整合面与油气运聚关系[J].古地理学报,2003,5(1):120-126.
[11]夏景生,王志坤,陈刚,等.东营凹陷东部深层浊积扇油藏成藏条件与模式研究[J].岩性油气藏,2009,21(1):55-60.
[12]常波涛.陆相盆地中不整合体系与油气的不均一性运移[J].石油学报,2006,27(5):19-23.
[13]Levorsen A I.Geology of Petroleum[M].San Francisco:Freeman Company,1954:618-624.
[14]Surdam R C,Crossey L J,Hagen E S,et al.Organic-inorganic in-teraction and sandstone diagenesis[J].AAPG Bulletin,1989,73(1):1-23.
[15]曹剑,胡文瑄,张义杰,等.准噶尔盆地油气沿不整合运移的主控因素分析[J].沉积学报,2006,24(3):399-405.
[16]汤良杰,金之钧,庞雄奇.多期叠合盆地油气运聚模式[J].石油大学学报(自然科学版),2000,24(4):67-70.
[17]Bethke C M,Reed J D,Oltz D F.Long-range petroleum migration in the Illinois Basin[J].AAPG Bulletin,1991,75(5):925-945.
[18]高长海,查明.不整合运移通道类型及输导油气特征[J].地质学报,2008,82(8):1113-1120.
[19]何发岐.碳酸盐岩地层中不整合—岩溶风化壳油气田——以塔里木盆地塔河油田为例[J].地质论评,2002,48(4):391-397.
[20]吴孔友,查明,洪梅.准噶尔盆地不整合结构的地球物理响应及油气成藏意义[J].石油实验地质,2003,25(4):328-332.
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