南大西洋两岸含盐盆地裂谷层序油气地质特征与油气分布特征对比
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摘要
通过对南大西洋两岸南、北部含盐盆地裂谷层序构造演化、沉积充填、盆地结构、油气地质特征和油气分布、富集特征的对比研究,总结了两岸南、北部盆地构造演化与沉积充填、盆地结构、石油地质条件和油气分布的差异性。分析表明,两岸南、北部盆地裂谷期构造演化存在北早南晚、北长南短的时序特点;盐下盆地结构呈现东西分带、南北分块、隆坳相间的构造格局;北部盆地裂谷期发育2套湖相烃源岩,南部盆地仅发育了1套优质湖相烃源岩;储层平面分布具有"北砂南灰"的分区分布特征;西非一侧油气呈现"内油外气"的分布特征,而巴西桑托斯盆地则具有"内气外油"的分布特征,油气垂向富集受盐岩盖层控制,油气平面富集受烃源岩、储层和构造等多重因素制约。
Comparing the tectonic evolution,basin architecture,sedimentary filling,petroleum geology,and hydrocarbon accumulation of rift sequence in the salt basins on both sides of the South Atlantic Ocean,the article summarizes difference and similarity of these geological factors from south to north basins on both sides.This analogue analysis reveals that the age of rift tectonic evolution became earlier and longer from north to south on both sides of basins.The structure of the basins can be divided to differential tectonic zones from east to west and differential compartments from south to north.Alternating uplift and depression is developed obviously in the basin.The lacustrine source rock has been developed in two layers in the northern basins,which one layers in the southern basins.Sandstone is the main reservoir rock in northern basins,while in southern basins the reservoir rock is limestone.Also different hydrocarbon accumulations are found on the both sides of basins.On the Brazil side,gas is accumulated in the inner zones and the oil is mainly in outer zones in Santos Basin,which is contrast to the other side.On the West African side,oil is accumulated in the inner zones and the gas is mainly distributed in outer zones.In addition,the vertical hydrocarbon accumulation is mainly controlled by salt seal,and horizontally,it is controlled by source rock distribution,reservoir rock and structure.
Comparing the tectonic evolution,basin architecture,sedimentary filling,petroleum geology,and hydrocarbon accumulation of rift sequence in the salt basins on both sides of the South Atlantic Ocean,the article summarizes difference and similarity of these geological factors from south to north basins on both sides.This analogue analysis reveals that the age of rift tectonic evolution became earlier and longer from north to south on both sides of basins.The structure of the basins can be divided to differential tectonic zones from east to west and differential compartments from south to north.Alternating uplift and depression is developed obviously in the basin.The lacustrine source rock has been developed in two layers in the northern basins,which one layers in the southern basins.Sandstone is the main reservoir rock in northern basins,while in southern basins the reservoir rock is limestone.Also different hydrocarbon accumulations are found on the both sides of basins.On the Brazil side,gas is accumulated in the inner zones and the oil is mainly in outer zones in Santos Basin,which is contrast to the other side.On the West African side,oil is accumulated in the inner zones and the gas is mainly distributed in outer zones.In addition,the vertical hydrocarbon accumulation is mainly controlled by salt seal,and horizontally,it is controlled by source rock distribution,reservoir rock and structure.
引文
[1]汪伟光,喻莲,聂明龙.南大西洋两岸被动大陆边缘盆地油气地质特征对比[J].新疆石油地质,2012,33(2):250-255.
[2]秦雁群,张光亚,梁英波,等.南大西洋深水油气分布特征、聚集规律与勘探方向[J].天然气地球科学,2016,27(2):229-240.
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[5]杨永才,孙玉梅,李友川,等.南大西洋被动陆缘共轭盆地烃源岩分布与油气富集规律:以巴西桑托斯盆地和西非纳米贝盆地为例[J].海洋地质与第四纪地质,2015,35(2):157-167.
[6]陈安清,胡思涵,楼章华,等.西非加蓬海岸盆地盐构造及其对成藏组合的控制[J].天然气地球科学,2014,25(2):228-237.
[7]邓超,白国平,仲米虹,等.巴西桑托斯盆地含油气系统划分与评价[J].海相油气地质,2014,19(3):35-42.
[8]郭建宇,郝洪文,李晓萍.南美洲被动大陆边缘盆地的油气地质特征[J].现代地质,2009,23(5):916-922.
[9]何娟,何登发,李顺利,等.南大西洋被动大陆边缘盆地大油气田形成条件与分布规律:以巴西桑托斯盆地为例[J].中国石油勘探,2011,16(3):57-67.
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[11]梁英波,张光亚,刘祚冬,等.巴西坎普斯-桑托斯盆地油气差异富集规律[J].海洋地质前沿,2011,27(12):55-62.
[12]刘琼,陶维祥,于水,等.西非下刚果-刚果扇盆地圈闭类型和分布特征[J].地质科技情报,2013,32(3):107-117.
[13]邬长武.巴西桑托斯盆地盐下层序油气地质特征与有利区预测[J].石油实验地质,2015,4(1):53-56.
[14]熊利平,邬长武,郭永强,等.巴西海上坎波斯与桑托斯盆地油气成藏特征对比研究[J].石油实验地质,2013,35(4):419-425.
[15]Kristian E M,Cobbold P R,Mount V S.Segmentation of an obliquely rifted margin,Campos and Santos basins,southeastern Brazil[J].AAPG Bulletin,2001,85(11):1903-1924.
[16]刘深艳,胡孝林,李进波.巴西桑托斯盆地盐下大发现及其勘探意义[J].中国石油勘探,2011,16(4):74-81.
[17]王力,屈红军,张功成,等.世界主要被动大陆边缘深水含油气盆地生储盖组合发育规律[J].海相油气地质,2011,16(4):22-31.
[18]郭建宇,郝洪文,李晓萍.南美洲被动大陆边缘盆地的油气地质特征[J].现代地质,2009,23(5):916-922.
[19]马中振,谢寅符,耿长波,等.巴西坎波斯盆地石油地质特征与勘探有利区分析[J].吉林大学学报:地球科学版,2011,41(4):1389-1396.
[20]Schiefelbein C E,Zumberge J E,Cameron N C,et al.Geochemical comparison of crude oil along the South Atlantic Margins∥Mello M R,Katzeds B J.Petroleum systems of South Atlantic margins.[S.l.]:AAPG Memoir,2000,73:15-26.
[21]Fetter M,de Ros L F,Bruhn C H L.Petrographic and seismic evidence for the depositional setting of giant turbidite reservoirs and the paleogeographic evolution of Campos Basin,offshore Brazil[J].Marine and Petroleum Geology,2009,26:824-853.
[22]陈凯,康洪泉,吴景富,等.巴西桑托斯盆地大型油气田富集主控因素[J].地质科技情报,2016,35(3):151-158.
[23]谢寅符,马中振,刘亚明,等.以成藏组合为核心的油气资源评价方法及应用:以巴西坎波斯(Campos)盆地为例[J].地质科技情报,2012,31(2):45-49.
[2]秦雁群,张光亚,梁英波,等.南大西洋深水油气分布特征、聚集规律与勘探方向[J].天然气地球科学,2016,27(2):229-240.
[3]汪伟光,童晓光,张亚雄,等.南大西洋重点被动大陆边缘盆地油气地质特征对比[J].中国石油勘探,2012,17(3):62-69.
[4]袁圣强,吴时国,马玉波,等.南大西洋深水盆地的构造沉积演化及含油气系统[J].天然气地球科学,2008,19(2):216-221.
[5]杨永才,孙玉梅,李友川,等.南大西洋被动陆缘共轭盆地烃源岩分布与油气富集规律:以巴西桑托斯盆地和西非纳米贝盆地为例[J].海洋地质与第四纪地质,2015,35(2):157-167.
[6]陈安清,胡思涵,楼章华,等.西非加蓬海岸盆地盐构造及其对成藏组合的控制[J].天然气地球科学,2014,25(2):228-237.
[7]邓超,白国平,仲米虹,等.巴西桑托斯盆地含油气系统划分与评价[J].海相油气地质,2014,19(3):35-42.
[8]郭建宇,郝洪文,李晓萍.南美洲被动大陆边缘盆地的油气地质特征[J].现代地质,2009,23(5):916-922.
[9]何娟,何登发,李顺利,等.南大西洋被动大陆边缘盆地大油气田形成条件与分布规律:以巴西桑托斯盆地为例[J].中国石油勘探,2011,16(3):57-67.
[10]胡湘瑜.西非被动大陆边缘盆地群大油气田形成条件与成藏模式[J].现代地质,2013,27(1):133-142.
[11]梁英波,张光亚,刘祚冬,等.巴西坎普斯-桑托斯盆地油气差异富集规律[J].海洋地质前沿,2011,27(12):55-62.
[12]刘琼,陶维祥,于水,等.西非下刚果-刚果扇盆地圈闭类型和分布特征[J].地质科技情报,2013,32(3):107-117.
[13]邬长武.巴西桑托斯盆地盐下层序油气地质特征与有利区预测[J].石油实验地质,2015,4(1):53-56.
[14]熊利平,邬长武,郭永强,等.巴西海上坎波斯与桑托斯盆地油气成藏特征对比研究[J].石油实验地质,2013,35(4):419-425.
[15]Kristian E M,Cobbold P R,Mount V S.Segmentation of an obliquely rifted margin,Campos and Santos basins,southeastern Brazil[J].AAPG Bulletin,2001,85(11):1903-1924.
[16]刘深艳,胡孝林,李进波.巴西桑托斯盆地盐下大发现及其勘探意义[J].中国石油勘探,2011,16(4):74-81.
[17]王力,屈红军,张功成,等.世界主要被动大陆边缘深水含油气盆地生储盖组合发育规律[J].海相油气地质,2011,16(4):22-31.
[18]郭建宇,郝洪文,李晓萍.南美洲被动大陆边缘盆地的油气地质特征[J].现代地质,2009,23(5):916-922.
[19]马中振,谢寅符,耿长波,等.巴西坎波斯盆地石油地质特征与勘探有利区分析[J].吉林大学学报:地球科学版,2011,41(4):1389-1396.
[20]Schiefelbein C E,Zumberge J E,Cameron N C,et al.Geochemical comparison of crude oil along the South Atlantic Margins∥Mello M R,Katzeds B J.Petroleum systems of South Atlantic margins.[S.l.]:AAPG Memoir,2000,73:15-26.
[21]Fetter M,de Ros L F,Bruhn C H L.Petrographic and seismic evidence for the depositional setting of giant turbidite reservoirs and the paleogeographic evolution of Campos Basin,offshore Brazil[J].Marine and Petroleum Geology,2009,26:824-853.
[22]陈凯,康洪泉,吴景富,等.巴西桑托斯盆地大型油气田富集主控因素[J].地质科技情报,2016,35(3):151-158.
[23]谢寅符,马中振,刘亚明,等.以成藏组合为核心的油气资源评价方法及应用:以巴西坎波斯(Campos)盆地为例[J].地质科技情报,2012,31(2):45-49.