南黄海盆地南五凹古近系戴南组沉积相及储盖组合分析
|
摘要
南五凹是南黄海盆地南部坳陷最具勘探潜力的凹陷之一,是一个南断北超的典型箕状断陷湖盆,其中古近系戴南组为河湖相砂泥岩地层。综合应用测井、岩心、地震剖面等资料,共识别出3种主要的沉积体系:三角洲、湖泊、扇三角洲沉积体系,其基本继承了南部物源为主的沉积格局,北部三角洲不太发育,凹陷中部为滨浅湖相沉积。沉积相在平面上分布范围明确,纵向上既有差异性又有继承性。戴南组发育三套储盖组合,从矿物成分、实测孔隙度及砂岩厚度看储层发育,由丰富的油气显示体现了盖层的有效性,最有利的储盖组合是戴一段下部的组合。
The Nan 5 Sag is one of the most important potential oil and gas exploration areas in the south depression of Nanhuanghai basin,and is a typical dustpan shaped subsidence lacustrine basin with a fault as its south boundary and a slope to the north.The Dainan formation in the Nan 5 Sag is mainly comprises fluvial-lacustrine sandstone and mudstone.Based on data of log,core and seismic profile,There are three kinds of sedimentary systems,including delta,fan delta and lacustrine system,fan delta in the south fault is the main provenance inheritance,delta in the north is restricted,shallow lacustrine system is the largest area in the depression.The sedimentary facies were developed in specific places in plane and shows differences and inheritance in vertical evolution.There are three reservoir-seal assemblages in Dainan formation.The mineral composition,porosity and sandstone thickness show that the reservoir is good.The presence of oil and gas show that the seal is availability,where the best reservoir-seal assemblage is the lower member of Dainan formation.
The Nan 5 Sag is one of the most important potential oil and gas exploration areas in the south depression of Nanhuanghai basin,and is a typical dustpan shaped subsidence lacustrine basin with a fault as its south boundary and a slope to the north.The Dainan formation in the Nan 5 Sag is mainly comprises fluvial-lacustrine sandstone and mudstone.Based on data of log,core and seismic profile,There are three kinds of sedimentary systems,including delta,fan delta and lacustrine system,fan delta in the south fault is the main provenance inheritance,delta in the north is restricted,shallow lacustrine system is the largest area in the depression.The sedimentary facies were developed in specific places in plane and shows differences and inheritance in vertical evolution.There are three reservoir-seal assemblages in Dainan formation.The mineral composition,porosity and sandstone thickness show that the reservoir is good.The presence of oil and gas show that the seal is availability,where the best reservoir-seal assemblage is the lower member of Dainan formation.
引文
蔡乾忠.1995.中国东部与朝鲜大地构造单元对应划分[J].海洋地质与第四纪地质,15(1):7-19.
蔡乾忠.1998.中国海域及邻区主要含油气盆地与成藏地质条件[J].海洋地质与第四纪地质,18(4):1-10.
陈兆荣,侯明才,董桂玉,等.2008.川西前陆盆地上侏罗统蓬莱镇组沉积特征[J].东华理工大学学报:自然科学版,31(4):325-331.
董荣鑫.1999.高邮凹陷戴南-三垛组古生物与沉积环境演变[J].同济大学学报:自然科学版,27(3):366-370.
冯志强,姚永坚,曾祥辉,等.2004.对黄海中、古生界地质构造及油气远景的新认识[J].中国海上油气,16(6):367-373.
龚再升.1997.中国近海大油气田[M].北京:石油工业出版社.
郭玉贵.1997.中国近海地质(黄海、东海地质及邻域地质构造特征)[M].北京:地质出版社.
刘世丽.2010.金湖凹陷戴南组沉积相研究[J].石油天然气学报,32(3):193-196.
秦蕴珊,赵一阳.1989.黄海地质(黄海海底与地壳结构)[M].北京:海洋出版社.
任小庆,侯明才,邓敏,等.2011.鄂尔多斯盆地麻黄山西区块长61油层组沉积相研究[J].东华理工大学学报:自然科学版,34(1):25-32.
孙和清,朱平.1993.中国北部海域活动断裂特征[J].海洋地质与第四纪地质,13(增刊):63-71.
汪龙文.1989.南黄海的基本地质构造特征和油气远景[J].海洋地质与第四纪地质,9(3):41-50.
魏祥峰,张廷山,梁兴,等.2012.海安凹陷曲塘、海北次凹戴南组-三垛组一段沉积特征及演化[J].石油与天然气地质,33(2):265-276.
沿海大陆架及毗邻海域油气区石油地质志编写组.1990.中国石油地质志(卷十六上册):沿海大陆架及毗邻海域油气区[M].北京:石油工业出版社.
姚永坚,冯志强,郝天珧,等.2008.对南黄海盆地构造层特征及含油气性的新认识[J].地学前缘,15(6):232-240.
袁义善,朱履熹.1989.江苏高邮凹陷马家咀-黄珏地区下第三系渐新统戴南组和三垛组一段含油气砂体沉积相特征[J].华东师范大学学报:自然科学版,(3):65-77.
张喜林,朱筱敏,钟大康,等.2005.苏北盆地高邮凹陷古近系戴南组沉积相及其对隐蔽油气藏的控制[J].古地理学报,7(2):207-218.
蔡乾忠.1998.中国海域及邻区主要含油气盆地与成藏地质条件[J].海洋地质与第四纪地质,18(4):1-10.
陈兆荣,侯明才,董桂玉,等.2008.川西前陆盆地上侏罗统蓬莱镇组沉积特征[J].东华理工大学学报:自然科学版,31(4):325-331.
董荣鑫.1999.高邮凹陷戴南-三垛组古生物与沉积环境演变[J].同济大学学报:自然科学版,27(3):366-370.
冯志强,姚永坚,曾祥辉,等.2004.对黄海中、古生界地质构造及油气远景的新认识[J].中国海上油气,16(6):367-373.
龚再升.1997.中国近海大油气田[M].北京:石油工业出版社.
郭玉贵.1997.中国近海地质(黄海、东海地质及邻域地质构造特征)[M].北京:地质出版社.
刘世丽.2010.金湖凹陷戴南组沉积相研究[J].石油天然气学报,32(3):193-196.
秦蕴珊,赵一阳.1989.黄海地质(黄海海底与地壳结构)[M].北京:海洋出版社.
任小庆,侯明才,邓敏,等.2011.鄂尔多斯盆地麻黄山西区块长61油层组沉积相研究[J].东华理工大学学报:自然科学版,34(1):25-32.
孙和清,朱平.1993.中国北部海域活动断裂特征[J].海洋地质与第四纪地质,13(增刊):63-71.
汪龙文.1989.南黄海的基本地质构造特征和油气远景[J].海洋地质与第四纪地质,9(3):41-50.
魏祥峰,张廷山,梁兴,等.2012.海安凹陷曲塘、海北次凹戴南组-三垛组一段沉积特征及演化[J].石油与天然气地质,33(2):265-276.
沿海大陆架及毗邻海域油气区石油地质志编写组.1990.中国石油地质志(卷十六上册):沿海大陆架及毗邻海域油气区[M].北京:石油工业出版社.
姚永坚,冯志强,郝天珧,等.2008.对南黄海盆地构造层特征及含油气性的新认识[J].地学前缘,15(6):232-240.
袁义善,朱履熹.1989.江苏高邮凹陷马家咀-黄珏地区下第三系渐新统戴南组和三垛组一段含油气砂体沉积相特征[J].华东师范大学学报:自然科学版,(3):65-77.
张喜林,朱筱敏,钟大康,等.2005.苏北盆地高邮凹陷古近系戴南组沉积相及其对隐蔽油气藏的控制[J].古地理学报,7(2):207-218.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心