Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (5): 1269-1277.doi: 10.13278/j.cnki.jjuese.201505101

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Oil and Gas Pool-Forming Law and Reservoir Model of LIanos Foreland Basin

Feng Fang1, Wang Xiaojie1, Lü Benxun2, Wu Xiaobin3, Li Haiyan4   

  1. 1. Sinopec International Petroleum Exploration and Production Corporation, Beijing 100269, China;
    2. Xinjiang Guanghui Petroleum Co., Ltd, Beijing 100055, China;
    3. School of Energy and Environmental Engineering, Yan'an University, Yan'an 716000, Shaanxi, China;
    4. College of Geosciences, China University of Petroleum, Beijing 102249, China
  • Received:2014-04-09 Online:2015-09-26 Published:2015-09-26

Abstract:

The MM oilfield is located in the eastern slope of LIanos foreland basin in Colombia, South America. It is made up of many micro amplitude, small scale lithologic-structural reservoirs far away from the western hydrocarbon source. A comprehensive analysis is conducted for the history of tectonic evolution of LIanos basin with full integration of geological logging and seismic data. The results show that the oil and gas pool was formed through "hydrocarbon migrated long distance through a complex transport system and accumulated by faults sheltered". The long distance transport system controls abundance of reservoirs, and lateral sealing faults control oil and gas distribution, while the size of trap and reservoir physical properties directly affect the reservoir scale. In the study area, for the hydrocarbon migration, the C7 formation of Carbonera group is the main lateral passage,and the faults are vertical passages. The matching relationship between the fault throw and the thickness of cap rock as well as the trap conditions jointly control MM oilfield reservoir model, fault nose, lithologic-fault, and fault-lithologic reservoir types.

Key words: LIanos foreland basin, oil and gas pool-forming law, fault sheltertd, fault lateral sealing, reservoir model

CLC Number: 

  • P613.8

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