Lithologic Reservoirs ›› 2008, Vol. 20 ›› Issue (2): 48-53.doi: 10.3969/j.issn.1673-8926.2008.02.008

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Heterogeneity models and hydrocarbon distr ibution in Chang 6 member of Yanchang Formation in Gongdatan ar ea, Ganguyi Oilfield

WANG Hui, WANG Fengqin   

  1. School of Petroleum Resources, Xi’an Shiyou University, Xi’an 710065, China
  • Online:2008-06-15 Published:2008-06-15

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Abstract:

Based on the geology, logging and the data of core analysis and production test, three macro-heterogeneity models of inner layer, interlayer and horizon in the reservoirs are established for Chang 6 member in Gongdatan area, Ganguyi Oilfield. The relationship between the hydrocarbon distribution rule and the reservoir heterogeneity is studied. The research shows that the macro-heterogeneity of Chang 6 member is strong. The hydrocarbons of inner layer, horizon and interlayer mainly distribute respectively in the lower part of positive rhythm sand bodies and the upper part of the reverse rhythm sand bodies, in the delta plain and front distributary channel and in the first sand group of Chang 6 member which has good physical property and weak heterogeneity. It is shown that the macro-heterogeneity of Chang 6
member controls the lateral and vertical petroleumformation and distribution.

Key words: Niudong fault, sequence stratigraphy configuration, Paleogene, Baxian Sag

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