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Reservoir heterogeneity study on Guan 104 Block of Dagang oil field

JIANG Xiang-yun,WU Sheng-he,WANG Shao-hua(Faculty of Geoscience,China University of Petroleum,Beijing 102249)  
This paper summarizes reservoir heterogeneity characteristic of Guan 104 Block and analyzes the reflection of oil production.Using the high-resolution sequence theory,we analyze the changes of base-level cycle controlling on the reservoir heterogeneity.Concerning on main production problems,which are the contradiction between layers and the heavy seeping of single layer during production stage of Guan 104 Block Dagang oil field,we mainly analyze the reservoir heterogeneity between layers.The study of strata cycle,facies distribution and the distribution of barriers are the main controlling factors of heterogeneity.And the distribution of barriers and facies were controlled by the deposit cycles.Changes of base-level faces make the change of the ratio of accommodation space and sedimentary alimentation(A/S).Low ratio means the light heterogeneity,high ratio causes the heavy heterogeneity.The testing data of producing liquid and inhaling water was used to check the reservoir heterogeneity,the direct of future exploit has been work out,the production can be guided.
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