苏北泰兴黄桥地区剥蚀厚度恢复及其意义
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摘要
苏北泰兴黄桥地区的二叠系孤峰组灰黑色页岩和龙潭组黑色泥岩与煤层是一套重要的海相—海陆过渡相生烃层系,受印支期挤压造山、燕山期断陷、喜马拉雅早期断陷等构造运动影响,它们经历了复杂的埋藏和生烃作用。虽然在北部深陷区埋深达万米以上,可能发生了持续的生烃,但其他大部分凸起构造上的现今埋深只有200～2000m,凹陷和斜坡构造上埋深2000～5000m,不同构造部位的生烃强度与剥蚀厚度和埋藏史有关。根据井点最大厚度估算的该区印支期的最大剥蚀厚度为2256m。钻井泥岩声波时差法和地震剖面上地层趋势外推法恢复的该区燕山期和喜马拉雅早期最大剥蚀厚度分别为900m和550m,主要剥蚀区位于东、南、西次凸斜坡带,随时间推移较大剥蚀厚度位置向东、西方向扩展。根据恢复的剥蚀厚度和埋藏—构造热演化分析得知,北部和西部凹陷主体区的二叠系烃源岩在燕山期末至今达到了主生烃期,斜坡和次级凸起区处于低成熟—未成熟阶段。
The dark-gray shale of Permian Gufeng Formation and black shale and coal of Permian Longtan Formation in the Huangqiao area, Taixing City, northern Jiangsu, compose an important marine and marine—continental transitional hydrocarbon layer system. Being controlled by the tectonic movement of the Indosinian crumpling orogenesis, the Yanshanian rift and the early Himalayan rift and so on, they experienced a complex burial and hydrocarbon generation. Although its depth has more than10 kilometers in the northern deep depression and may have a continuous hydrocarbon generation, its current depth are only 200~2000 meters in horsts and 2000~5000 meters in depressions and slopes. The hydrocarbon generation intensity in different structural position is related to erosion thickness and its burial history. Based on the thickness of well sites, the estimated largest eroded thickness is 2256 meters in Indosinian movement, and the methods of shale interval transit time and seismic erosion interpretation have showed that its largest erosion thickness is 900 meters in Yanshanian movement and 550 meters in Himalayan movement.The main eroded area is located in the eastern, southern and western horsts, and the newly eroded thickness was larger eastward and westward. The recovered eroded thickness and burial—tectonic—thermal evolution analysis showed that the Permian source rocks in the northern and western depression began to generate hydrocarbon in Yanshanian stage. Source rocks in slopes and horsts do not mature in present.
The dark-gray shale of Permian Gufeng Formation and black shale and coal of Permian Longtan Formation in the Huangqiao area, Taixing City, northern Jiangsu, compose an important marine and marine—continental transitional hydrocarbon layer system. Being controlled by the tectonic movement of the Indosinian crumpling orogenesis, the Yanshanian rift and the early Himalayan rift and so on, they experienced a complex burial and hydrocarbon generation. Although its depth has more than10 kilometers in the northern deep depression and may have a continuous hydrocarbon generation, its current depth are only 200~2000 meters in horsts and 2000~5000 meters in depressions and slopes. The hydrocarbon generation intensity in different structural position is related to erosion thickness and its burial history. Based on the thickness of well sites, the estimated largest eroded thickness is 2256 meters in Indosinian movement, and the methods of shale interval transit time and seismic erosion interpretation have showed that its largest erosion thickness is 900 meters in Yanshanian movement and 550 meters in Himalayan movement.The main eroded area is located in the eastern, southern and western horsts, and the newly eroded thickness was larger eastward and westward. The recovered eroded thickness and burial—tectonic—thermal evolution analysis showed that the Permian source rocks in the northern and western depression began to generate hydrocarbon in Yanshanian stage. Source rocks in slopes and horsts do not mature in present.
引文
白云风,程日辉,孔庆莹,唐华风,崔坤宁,刘鹏.2007.下扬子地区晚白垩世浦口期沉积古地理及地质背景.吉林大学学报,37(4):684～688.
陈安定,刘东鹰,刘子满.2001.江苏下扬子区海相中、古生界烃源岩晚期生烃的论证与定量研究.海相油气地质,6(4):27～32.
陈安定.2002.苏皖下扬子区中、古生界油气勘探方向.南方油气,15(3～4):16～20.
陈安定.2006.江苏下扬子区下古生界源岩二次生烃.南方油气,19(1):8～14.
程石麟.1987.苏北黄桥地区二氧化碳气藏的地质特征和成因讨论.石油与天然气地质,8(2):214～218.
胡少华.2004.基于地震资料的构造—沉积综合分析法—一种剥蚀厚度恢复新方法.石油地球物理勘探,39(4):478～483.
黄捍东,罗群,王春英.2006.柴北缘西部中生界剥蚀厚度恢复及其地质意义.石油勘探与开发,33(1):44～48.
刘东鹰.2003.苏皖下扬子区中古生界油气勘探方向.江汉石油学院学报,25(增刊):46～47.
鲁雪松,蒋有录,常振恒.2007.东濮凹陷东营组地层剥蚀厚度估算及其意义.地质科技情报,26(2):8～12.
蒲仁海,姚宗慧,张艳春.2000.鄂尔多斯盆地古构造演化在气田形成中的作用及意义.天然气工业,20(6):27～29.
邱旭明,刘玉瑞,傅强.2006.苏北盆地上白垩统—第三系层序地层与沉积演化.北京:地质出版社,7～11.
任以发.2005.黄桥二氧化碳气田成藏特征与进一步勘探方向.天然气地球科学,16(5):632～636.
王武元.1997.江苏泰兴黄桥二氧化碳气田的基本特征及开发利用前景.江苏地质,21(3):187～192.
王开扬.2006.江苏黄桥二氧化碳气田及其成藏模式.海洋地质动态,22(4):17～20.
王杰,刘文汇,秦建中,张隽,申宝剑.2006.苏北盆地黄桥CO2气田成因特征及成藏机制.天然气地球科学,19(6):826～834.
徐田武,王英民,魏水建,杨立干,袁书坤,耳闯.2008.苏北盆地始新统三垛运动剥蚀厚度恢复.江汉石油学院学报,30(6):56～59.
姚柏平,陆红,郭念发.1999.论下扬子区多期构造格局叠加及其油气地质意义.石油勘探与开发,26(4):2～3.
袁玉松,郭彤楼,付孝悦,卢庆治,胡圣标.2006.下扬子地区热历史与海相烃源岩二次生烃潜力.现代地质,20(2):283～289.
张建球.1996.下扬子区中、古生界构造演化与油气藏形成史.石油与天然气地质,17(2):147～148.
朱光,刘国生,李双应,牛漫兰.2000.下扬子地区盆地的“四层楼”结构及其动力学机制.合肥工业大学学报,23(1):2～5.
Magara K.1976.Thickness of removal sediments,paleo-pore pressure andpaleo-temperature,southwestern part of Western Canada basin.AAPG Bulletin.60(4):554～565.
陈安定,刘东鹰,刘子满.2001.江苏下扬子区海相中、古生界烃源岩晚期生烃的论证与定量研究.海相油气地质,6(4):27～32.
陈安定.2002.苏皖下扬子区中、古生界油气勘探方向.南方油气,15(3～4):16～20.
陈安定.2006.江苏下扬子区下古生界源岩二次生烃.南方油气,19(1):8～14.
程石麟.1987.苏北黄桥地区二氧化碳气藏的地质特征和成因讨论.石油与天然气地质,8(2):214～218.
胡少华.2004.基于地震资料的构造—沉积综合分析法—一种剥蚀厚度恢复新方法.石油地球物理勘探,39(4):478～483.
黄捍东,罗群,王春英.2006.柴北缘西部中生界剥蚀厚度恢复及其地质意义.石油勘探与开发,33(1):44～48.
刘东鹰.2003.苏皖下扬子区中古生界油气勘探方向.江汉石油学院学报,25(增刊):46～47.
鲁雪松,蒋有录,常振恒.2007.东濮凹陷东营组地层剥蚀厚度估算及其意义.地质科技情报,26(2):8～12.
蒲仁海,姚宗慧,张艳春.2000.鄂尔多斯盆地古构造演化在气田形成中的作用及意义.天然气工业,20(6):27～29.
邱旭明,刘玉瑞,傅强.2006.苏北盆地上白垩统—第三系层序地层与沉积演化.北京:地质出版社,7～11.
任以发.2005.黄桥二氧化碳气田成藏特征与进一步勘探方向.天然气地球科学,16(5):632～636.
王武元.1997.江苏泰兴黄桥二氧化碳气田的基本特征及开发利用前景.江苏地质,21(3):187～192.
王开扬.2006.江苏黄桥二氧化碳气田及其成藏模式.海洋地质动态,22(4):17～20.
王杰,刘文汇,秦建中,张隽,申宝剑.2006.苏北盆地黄桥CO2气田成因特征及成藏机制.天然气地球科学,19(6):826～834.
徐田武,王英民,魏水建,杨立干,袁书坤,耳闯.2008.苏北盆地始新统三垛运动剥蚀厚度恢复.江汉石油学院学报,30(6):56～59.
姚柏平,陆红,郭念发.1999.论下扬子区多期构造格局叠加及其油气地质意义.石油勘探与开发,26(4):2～3.
袁玉松,郭彤楼,付孝悦,卢庆治,胡圣标.2006.下扬子地区热历史与海相烃源岩二次生烃潜力.现代地质,20(2):283～289.
张建球.1996.下扬子区中、古生界构造演化与油气藏形成史.石油与天然气地质,17(2):147～148.
朱光,刘国生,李双应,牛漫兰.2000.下扬子地区盆地的“四层楼”结构及其动力学机制.合肥工业大学学报,23(1):2～5.
Magara K.1976.Thickness of removal sediments,paleo-pore pressure andpaleo-temperature,southwestern part of Western Canada basin.AAPG Bulletin.60(4):554～565.
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