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Geoscience ›› 2011, Vol. 25 ›› Issue (6): 1137-1144.

• geology of petroleum • Previous Articles     Next Articles

Type of Petroleum Migration Pathway System and Accumulation Model in Langgu Depression,Jizhong

 WANG  Zong-Li-1, 2 , LUO  Jiang-3, LI  Qing-Li-4, LI  Xiang-Yang-3, XIE  Jing-4, DIAO  Lei-4, CUI  Qiang-Qiang-3   

  1. 1 Faculty of Resources & Safety Engineering, China University of Mining and Technology, Beijing100083,China;
    2Langfang Branch, Research Institute of Petroleum Exploration and Development, PetroChina,Langfang, Hebei065007,China;
    3 Huabei Oilfield Company, PetroChina, Renqiu, Hebei062552,China;
    4School of Energy Resources,China University of Geosciences, Beijing100083,China
  • Received:2011-04-11 Revised:2011-07-30 Online:2011-12-14 Published:2011-12-15

Abstract:

Based on the problems that the reservoir formation mechanism of Langgu Depression is not clear and the hydrocarbon migration pathway system is indefinite currently, this paper filters parameters of affecting hydrocarbon migration and pathway, and emphasizes on the relationship between wax content, oil field water salinity and buried depth. Combining with its vertical assembling pattern, three petroleum migration pathway system types are summarized: A type(conventional chromatography),B type(express pathway),C type(porefracture), and the spatial distribution features of diverse reservoirs at various structural belts are studied. The control over the depth, scale and categories of reservoir and petroleum phase by pathway system types is researched. Finally, according to scheme of classification of migration pathway system, four models of hydrocarbon accumulation are established and petroleum accumulation unit is determined. It can provide significant information for the oil and gas reservoir simulation, exploration direction and exploration target prediction.

Key words: Langgu Depression, hydrocarbon migration parameter, migration pathway system type, petroleum accumulation model