Lithologic Reservoirs ›› 2020, Vol. 32 ›› Issue (6): 12-21.doi: 10.12108/yxyqc.20200602

• PETROLEUM GEOLOGY • Previous Articles     Next Articles

Characteristics and hydrocarbon significance of lacustrine turbidite of Early Cretaceous Pointe Indienne Formation in Lower Congo Basin

YU Ye1,2, CAI Linghui1,2, YIN Taiju3, WANG Li2, ZHANG Xingqiang3, XU Jifeng3   

  1. 1. Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China;
    2. School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China;
    3. School of Geosciences, Yangtze University, Wuhan 430100, China
  • Received:2020-01-08 Revised:2020-02-20 Online:2020-12-01 Published:2020-10-30

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Abstract: In order to define the key subsalt exploration layer in the Lower Congo Basin,the characteristics and hydrocarbon significance of lacustrine turbidite of Early Cretaceous Pointe Indienne Formation in the Lower Congo Basin were investigated by using the relevant theories and methods of sedimentology and petroleum geology,combined with regional geological background, drilling and logging data and the test analysis results, and the development model of large turbidite fan of Pointe Indienne Formation was established. The results show that the turbidite was formed in the deep lake sedimentary environment,and its superimposed sandbody has typical turbidite sedimentary characteristics,such as typical Bauma sequence and characteristic sedimentary structure. The turbidite sandstone is feldspathic detrital quartz sandstone or greywacke with low component maturity and poor structural maturity,which is characterized by rapid accumulation of gravity flow sedimentation. A number of complete and incomplete Bauma sequences have been identified in the turbidite sandstone,showing the combination of thick massive turbidite and thin or micro turbidite,indicating the sedimentary characteristics of the inner,middle and outer fans of the turbidite fan. The turbidite sandstone is a medium porosity and low permeability reservoir,which is in contact with the thick and high-quality source rocks developed in the upper and lower part of Pointe Indienne Formation. It has good source reservoir cap assemblage,and is the key layer for the subsalt oil and gas exploration in the Lower Congo Basin.

Key words: turbidite, deep lacustrine facies, Pointe Indienne Formation, Early Cretaceous, Lower Congo Basin

CLC Number: 

  • P618.13
[1] KUENEN P H, MIGLIORINI C I. Turbidity currents as a cause of graded bedding. The Journal of Geology, 1950, 58(2):91-127.
[2] BOUMA A H, KUENEN P H, SHEPARD F P. Sedimentology of some flysch deposits. Amsterdam, New York:Elsevier Pub. Co., 1962:168.
[3] MIDDLETON G V, HAMPTON M A. Sediment-gravity flows:Mechanics of flow and deposition//MIDDLETON G V, BOUMA A H. Turbidites and deep water sedimentation. Los Angeles:Society of Economic Paleontologists and Mineralogists, 1973:1-38.
[4] HAMPTON M A. Competence of fine-grained debris flows. Journal of Sedimentary Research, 1975, 45(4):834-844.
[5] LOWE D R. Sediment gravity flows:Their classification and some problems of application to natural flows and deposits? DOYLE L J, PILKEY O H. Geology of continental slopes. Tulsa:Society of Economic Paleontologists and Mineralogists, 1979(27):75-82.
[6] WALKER R G. Deep-water sandstone facies and ancient submarine fans:Models for exploration for stratigraphic traps. AAPG Bulletin, 1978, 62(8):932-966.
[7] SHANMUGAM G. High-density turbidity currents:Are they sandy debris flows? Journal of Sedimentary Research, 1996, 66(1):2-10.
[8] SHANMUGAM G. 50 years of the turbidite Paradigm(1950 s-1990 s):Deep-water processes and facies models-a critical perspective. Marine and Petroleum Geology, 2000, 17(2):285-324.
[9] 刘为, 杨希冰, 张秀苹, 等.莺歌海盆地东部黄流组重力流沉积特征及其控制因素.岩性油气藏, 2019, 31(2):75-82. LIU W, YANG X B, ZHANG X P, et al. Characteristics and controlling factors of gravity flow deposits of Huangliu Formation in eastern Yinggehai Basin. Lithologic Reservoirs, 2019, 31(2):75-82.
[10] 李相博, 刘化清, 潘树新, 等.中国湖相沉积物重力流研究的过去、现在与未来.沉积学报, 2019, 37(5):904-921. LI X B, LIU H Q, PAN S X, et al. The Past,present and future of research on deep-water sedimentary gravity flow in lake basins of China. Acta Sedimentologica Sinica, 2019, 37(5):904-921.
[11] 邹才能, 赵政璋, 杨华, 等.陆相湖盆深水砂质碎屑流成因机制与分布特征:以鄂尔多斯盆地为例.沉积学报, 2009, 27(6):1065-1075. ZOU C N, ZHAO Z Z, YANG H, et al. Genetic mechanism and distribution of sandy debris flows in terrestrial lacustrine basin. Acta Sedimentologica Sinica, 2009, 27(6):1065-1075.
[12] 傅强, 李璟, 邓秀琴, 等.沉积事件对深水沉积过程的影响:以鄂尔多斯盆地华庆地区长6油层组为例.岩性油气藏, 2019, 31(1):20-29. FU Q, LI J, DENG X Q, et al. Influence of sedimentary events on deep water sedimentation process:a case of Chang 6 reservoir in Huaqing area, Ordos Basin. Lithologic Reservoirs, 2019, 31(1):20-29.
[13] 杨仁超, 尹伟, 樊爱萍, 等.鄂尔多斯盆地南部三叠系延长组湖相重力流沉积细粒岩及其油气地质意义. 古地理学报, 2017, 19(5):791-806. YANG R C, YIN W, FAN A P, et al. Fine-grained, lacustrine gravity-flow deposits and their hydrocarbon significance in the Triassic Yanchang Formation in southern Ordos Basin. Journal of Palaeogeography, 2017, 19(5):791-806.
[14] 潘树新, 郑荣才, 卫平生, 等.陆相湖盆块体搬运体的沉积特征、识别标志与形成机制.岩性油气藏, 2013, 25(2):9-18. PAN S X, ZHENG R C, WEI P S, et al. Deposition characteristics, recognition mark and form mechanism of mass transport deposits in terrestrial lake basin. Lithologic Reservoirs, 2013, 25(2):9-18.
[15] 潘树新, 刘化清, CARLOS Z, 等. 大型坳陷湖盆异重流成因的水道-湖底扇系统:以松辽盆地白垩系嫩江组一段为例. 石油勘探与开发, 2017, 44(6):860-870. PAN S X, LIU H Q, CARLOS Z, et al. Sublacustrine hyperpycnal channel-fan system in a large depression basin:a case study of Nen 1 member, Cretaceous Nenjiang Formation in the Songliao Basin, NE China. Petroleum Exploration and Development, 2017, 44(6):860-870.
[16] 鲜本忠, 万锦锋, 姜在兴, 等.断陷湖盆洼陷带重力流沉积特征与模式:以南堡凹陷东部东营组为例.地学前缘, 2012, 19(1):121-135. XIAN B Z, WAN J F, JIANG Z X, et al. Sedimentary characteristics and model of gravity flow deposition in the depressed belt of rift lacustrine basin:a case study from Dongying Formation in Nanpu Depression. Earth Science Frontiers, 2012, 19(1):121-135.
[17] 蒲秀刚, 周立宏, 韩文中, 等.歧口凹陷沙一下亚段斜坡区重力流沉积与致密油勘探.石油勘探与开发, 2014, 41(2):138-149. PU X G, ZHOU L H, HAN W Z, et al. Gravity flow sedimentation and tight oil exploration in lower first member of Shahejie Formation in slope area of Qikou Sag, Bohai Bay Basin. Petroleum Exploration and Development, 2014, 41(2):138-149.
[18] 刘化清, 洪忠, 张晶, 等.断陷湖盆重力流水道地震沉积学研究:以歧南地区沙一段为例.石油地球物理勘探, 2014, 49(4):784-794. LIU H Q, HONG Z, ZHANG J, et al. Seismic sedimentology research on fault depressed lacustrine basin gravity flow channels of Oligocene Es1 in Qi'nan area, Qikou Sag. Oil Geophysical Prospecting, 2014, 49(4):784-794.
[19] 逄林安.西非下刚果盆地大型湖相浊积岩特征及勘探意义. 海洋地质前沿, 2018, 34(4):41-48. PANG L A. Characteristics and exploration potential of lacustrine turbiditic sandstone in Lower Congo Basin of West Africa. Marine Geology Frontiers, 2018, 34(4):41-48.
[20] 鲜本忠, 安思奇, 施文华.水下碎屑流沉积:深水沉积研究热点与进展.地质论评, 2014, 60(1):39-51. XIAN B Z, AN S Q, SHI W H. Subaqueous debris flow:Hotspots and advances of deep-water sedimention. Geological Review, 2014, 60(1):39-51.
[21] WANG L L, WANG Z Q, YU S, et al. Seismic responses and controlling factors of Miocene deepwater gravity-flow deposits in block A, Lower Congo Basin. Journal of African Earth Sciences, 2016, 120:41-43.
[22] 范洪耀, 陶维祥, 于水, 等.下刚果盆地油气成藏条件及勘探潜力分析.海洋石油, 2012, 32(2):16-20. FAN H Y, TAO W X, YU S, et al. Analysis of hydrocarbon accumulation conditions and exploration potentials in Lower Congo Basin. Offshore Oil, 2012, 32(2):16-20.
[23] 杨晓娟, 李军, 于炳松. 下刚果盆地构造特征及油气勘探潜力.地球物理学进展, 2012, 27(6):2585-2593. YANG X J, LI J, YU B S. Structural feature and exploratory potential of the Lower Congo Basin. Progress in Geophysics, 2012, 27(6):2585-2593.
[24] BATE R H. Non-marine ostracod assemblages of the Pre-Salt rift basins of West Africa and their role in sequence stratigraphy//CAMERON N R, BATE R H, CLURE V S. The oil and gas habitats of the South Atlantic. Geological Society London Special Publications, 1999, 153:283-292.
[25] POROPAT S F, COLIN J. Early Cretaceous ostracod biostratigraphy of eastern Brazil and western Africa:an overview. Gondwana Research, 2012, 22:772-798.
[26] HARRIS N B, FREEMAN K H, PANCOST R D, et al. The character and origin of lacustrine source rocks in the Lower Cretaceous synrift section, Congo Basin, west Africa. AAPG Bulletin, 2004, 88(8):1163-1184.
[27] 赵澄林, 朱筱敏.沉积岩石学.北京:石油工业出版社, 2000:57-71. ZHAO C L, ZHU X M. Sedimentary petrology. Beijing:Petroleum Industry Press, 2000:57-71.
[28] HUANG Y Q. Sedimentary characteristics of turbidite fan and its implication for hydrocarbon exploration in Lower Congo Basin. Petroleum Research, 2018, 3:189-196.
[29] 仲米虹, 唐武.前陆盆地隆后坳陷区湖底扇沉积特征及主控因素:以塔北轮南地区三叠系为例. 岩性油气藏, 2018, 30(5):18-28. ZHONG M H, TANG W. Sedimentary characteristics and controlling factors of sublacustrine fans in backbulge zone of foreland basin:Triassic in Lunnan area, Tarim Basin. Lithologic Reservoirs, 2018, 30(5):18-28.
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