Oil & Gas Geology ›› 2016, Vol. 37 ›› Issue (3): 363-371.doi: 10.11743/ogg20160308

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Petroleum accumulation systems and distribution of medium to large marine carbonate fields

Wang Dapeng1,2, Lu Hongmei3, Chen Xiaoliang1,2, Tao Chongzhi3, Meng Xiangjun4, Niu Xinjie5, Bai Guoping1,2   

  1. 1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, China;
    2. College of Geosciences, China University of Petroleum(Beijing), Beijing 102249, China;
    3. Petroleum Exploration & Production Research Institute, SINOPEC, Beijing 100083, China;
    4. No.3 Drilling Company of Daqing Drilling Engineering Company, PetroChina Daqing Oilfield Company, Daqing, Heilongjiang 163413, China;
    5. PetroChina Huabei Oilfield Company, Renqiu, Hebei 062552, China
  • Received:2014-12-17 Revised:2016-01-11 Online:2016-06-08 Published:2016-06-22

Abstract: A classification of petroleum accumulation systems (PAS) of marine carbonate fields was attempted by using the latest data of 199 medium to large marine carbonate fields from 53 petroliferous basins around the world and a “source-element” classification scheme.The result shows that PAS of the fields can be categorized into six types: one source-one element,one source-two elements,one source-three elements,two sources-two elements,two sources-three elements and three sources-three elements.The distribution patterns and characteristics of petroleum reserves for each of the 6 types of PAS were investigated and the dominate types with high hydrocarbon richness in marine carbonate petroliferous basins were identified,and their controls on hydrocarbon enrichment were revealed.Statistical analytical results show that one source-three elements PAS not only hosts the largest share of petroleum reserves but also occurs the most widely.It is followed by one source -two elements and two sources-three elements PAS.For other types of PAS,both the reserves and the numbers of occurrence are relatively small.One source-two element PAS is the most promising among all the types but it requires more favorable later preserving conditions.One-source-one element PAS presents itself mostly as unconventional reservoirs but is rarely found in marine carbonate rocks.

Key words: oil and gas distribution, petroleum accumulation system, marine carbonate, petroliferous basin

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