DISTRIBUTION OF THE SOURCE ROCKS AND MECHANISMS FOR PETROLEUM ENRICHMENT IN THE CONJUGATE BASINS ON THE SOUTH ATLANTIC PASSIVE MARGINS: CASES STUDIES FROM THE SANTOS AND NAMIBE BASINS
-
摘要: 巴西桑托斯盆地与西非纳米贝盆地属于南大西洋中部被动大陆边缘共轭盆地,其构造演化可划分为3个阶段:裂谷期、过渡期和后裂谷期,过渡期发育阿普特阶盐。南大西洋不对称裂开控制了桑托斯盆地和纳米贝盆地在盐下早白垩世裂谷地堑、盐发育和盐上晚白垩世地层厚度等方面的差异,这些差异控制了桑托斯盆地和纳米贝盆地盐下早白垩世湖相烃源岩发育及盐上晚白垩世海相烃源岩成熟度,进而控制了桑托斯盆地和纳米贝盆地油气富集规律。桑托斯盆地深水区盐下下白垩统构造或岩性圈闭是寻找巨型油气田的有利勘探方向;浅水区盐上上白垩统地堑深凹陷盐活动相关构造或岩性圈闭是寻找大中型油气田的有利勘探方向。Abstract: The Santos Basin in Brazil and the Namibe Basin in West Africa are the conjugate basins on the South Atlantic passive margin. The basins have undergone a complex history that can be divided into several basin evolution stages, i.e. the rift stage (Late Jurassic to Early Cretaceous), transitional stage (Early Cretaceous Aptian) and post-rift stage (Late Cretaceous to Holocene). A striking feature of the transitional stage is the widespread evaporite deposition of the Aptian salt. The characteristics of the Lower Cretaceous sub-salt rift, the thickness of the salt and the Upper Cretaceous supra-salt strata are controlled by the asymmetric extension of the South Atlantic. The mechanisms for petroleum enrichment in the Santos and Namibe Basins are controlled by the development of the Lower Cretaceous sub-salt lacustrine source rocks and the maturity of the Upper Cretaceous supra-salt marine source rocks. The Lower Cretaceous sub-salt structural and lithologic traps in the deep to ultra-deep water are the significant exploration targets for giant oil and gas fields and the Upper Cretaceous supra-salt structural and lithologic traps interrelated to the salt tectonics in the deep troughs under the shallow water are also the important for exploration of large and middle fields.
-
Key words:
- passive continental margins /
- asymmetric extension /
- salt /
- deep water /
- giant fields
-
-
[1] Katz B J, Mello M R. Petroleum systems of South Atlantic Marginal basins-an overview[C]//Mello M R, Katz B J (eds.). Petroleum Systems of South Atlantic Margins. AAPG Memoir,2000,73:1-13.
[2] Dickson W, Schiefelbein S, Zumberge J, et al. Basin analysis in Brazilian and West African conjugates:Combining disciplines to deconstruct petroleum systems[C]//GCSSEPM Foundation 25th Annual Bob F. Perkins Research Conference, Houston TX, 2005.
[3] Versfelt J W. South Atlantic margin rift basin asymmetry and implications for pre-salt exploration[C]//AAPG International Conference and Exhibition, Rio de Janeiro, Brazil, 2010.
[4] Lentini M R, Fraser S I, Sumner H S, et al. Geodynamics of the central South Atlantic conjugate margins:implications for hydrocarbon potential[J]. Petroleum Geoscience, 2010, 16(3):217-229.
[5] Zalán P V, Severino M do C G, Rigoti C A, et al. An entirely new 3d-view of the crustal and mantle structure of a South Atlantic Passive Margin-Santos, Campos and Espírito Santo Basins, Brazil[C]//AAPG Annual Convention and Exhibition, Houston, Texas, USA, 2011.
[6] Estrella G. Breaking paradigms giant and super-giant discoveries in Brazil[C]//AAPG Annual Convention & Exhibition, Denver, 2009.
[7] Mutti E, Carminatti M. Deep-water sands of the Brazilian offshore basins[C]//AAPG International Conference and Exhibition, Milan, Italy, 2011.
[8] Arbouille D, Andrus V, Piperi T, et al. Sub-salt and pre-salt plays-How much are left to be discovered?[C]//AAPG International Conference and Exhibition, Cartagena, Colombia, 2013.
[9] Halbouty M T. Giant Oil and Gas Fields of the Decade1990-1999[C]//AAPG Memoir, 2003, 78:15-105.
[10] 张功成,米立军,屈红军,等. 全球深水盆地群分布格局与油气特征[J]. 石油学报,2011,32(3):369-378.
[ZHANG Gongcheng, MI Lijun, QU Hongjun, et al. A basic distributional framework of global deepwater basins and hydrocarbon characteristics[J]. Acta Petrolei Sinica, 2011, 32(3):369-378.]
[11] 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.
[YUAN Shengqiang, WU Shiguo, MA Yubo, et al. Tectono-sedimentary evolution and petroleum systems of the deepwater basin along South Atlantic Ocean Margin[J]. Natural Gas Geoscience, 2008, 19(2):216-221.]
[12] 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.
[LIU Shenyan, HU Xiaolin, LI Jinbo. Great discovery and its significance for exploration in subsalt reservoir in Santos Basin, Brazil[J]. China Petroleum Exploration, 2011, 16(4):74-81.]
[13] 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):55-61.
[LIANG Yingbo, ZHANG Guangya, LIU Zuodong, et al. Hydrocarbon enrichment in the Campos and Santos basins in Brazil[J]. Marine Geology Frontier, 2011, 27(2):55-61.]
[14] 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):57-66.
[HE Juan, HE Dengfa, LI Shunli, et al. Formation and distribution of giant oil and gas fields in passive continental margin of South Atlantic Ocean:A case study of Santos Basin in Brazil[J]. China Petroleum Exploration, 2011, 16(3):57-66.]
[15] 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.
[WANG Weiguang, YU Lian, NIE Minglong. Comparison of hydrocarbon geological characteristics of intercoastal passive continental margin basins, South Atlantic Ocean[J]. Xinjiang Petroleum Geology, 2012, 33(2):250-255.]
[16] Moulin M, Aslanian D, Unternehr P. A new starting point for the South and Equatorial Atlantic Ocean[J]. Earth-Science Reviews, 2010, 98(1):1-37.
[17] Heine C, Zoethout J, Muller R D. Kinematics of the South Atlantic rift[J]. Solid Earth, 2013, 4:215-253.
[18] Guardado L R, Spadini A R, Brandao J S L, et al. Petroleum systems of the Compos basin[C]//Mello M R, Katz B J. Petroleum Systems of South Atlantic Margins. AAPG Memoir, 2000, 73, 317-324.
[19] Schiefelbein C F, Zumberge J E, Cameron N C, et al. Geochemical comparison of crude oil along South Atlantic Margins[C]//Mello M R, Katz B J (eds). Petroleum Systems of South Atlantic Margins. AAPG Memoir, 2000, 73, 15-26.
[20] Holtar E, Forsberg A W. Postrift development of the Walvis Basin, Namibia:Results from the exploration campaign in Quadrant 1911[C]//Mello M R, Katz B J (eds.). Petroleum Systems of South Atlantic Margins. AAPG Memoir, 2000, 73, 429-446.
[21] Bray R, Lawrence S. Nearby finds brighten outlook[J]. The Leading Edge, 1999, 18(5):608-614.
[22] Koike L, Kiang C H, Reis F de A M. Organic geochemistry of Santos Basin oil, Brazil[C]//Farrimond P. The Abstracts of the 23rd International Meeting on Organic Geochemistry, Torquay, England, 2007:921-922.
[23] Mohriak W U, Szatmari P, Anjos S. Salt:geology and tectonics of selected Brazilian basins in their global context[C]//Alsop G I, Archer S G, Hartley A J (eds). Salt Tectonics, Sediments and Prospectivity. London:Geological Society Special Publications, 2012, 363:131-158.
[24] Feijó F J. Santos Basin:40 years from shallow to deep to ultra-deep water[C]//AAPG International Conference and Exhibition, Cartagena, Colombia, 2013.
[25] Schenk C J, Brownfield M, Charpentier R R, et al. U.S. Geological survey 2011 assessment of undiscovered oil and gas resources of the World[C]//AAPG Annual Convention and Exhibition, Long Beach, California, 2012.
-
计量
- 文章访问数: 1049
- PDF下载数: 9
- 施引文献: 0
下载: