南堡凹陷构造型油气藏分布主控因素及预测方法

doi:10.11743/ogg20120505

Abstract

Abstract:

Nanpu depression in Bohai Bay Basin has large petroleum exploration potential,and most of the reservoirs discovered in the depression are of structural type.However,the distribution pattern of petroleum resources is still unclear,so it is diffficult to effectively develop petroleum exploration.Geofacies,fluid potential and hydrocarbon kitchen are believed to be main factors controlling hydrocarbon distribution in Nanpu depression.Geofacies controlls hydrocarbon distribution by "favorable facies combined with high porosity and permeability" pattern, fluid potential controlls by "low potential" pattern,and hydrocarbon kitchen controlls by "near source" pattern.Based on these patterns,we established a comprehensive hydrocarbon accumulation model of "near source-favorable facies-low potential",which was applied to predict petroleum accumulation distributioin in Nanpu depression.Potential anticlinal reservoirs may occur in the first-order favorable area in Beipu structural belt and the second-order favorable area in Nanpu No.4 structural belt,whereas potential fault-block reservoirs may occur in the second-order favorable area in Beipu structural belt,second-order favorable area in Nanpu No.3 structural belt,second-order favorable area in Nanpu No.4 structural belt and third-order favorable area in Nanpu No.5 structural belt.

Key words: geofacies, fluid potential, hydrocarbon kitchen, structural reservoir, Nanpu depression, Bohai Bay Basin

CLC Number:

TE112.3

Huang Manning, Dong Yuexia, Pang Xiongqi, Hao Haijiang, Guo Jigang. Controlling factors of structural reservoir distribution and its prediction method in Nanpu depression, Bohai Bay Basin[J]. Oil & Gas Geology, 2012, 33(5): 695-704.

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Controlling factors of structural reservoir distribution and its prediction method in Nanpu depression, Bohai Bay Basin

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