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走滑￣拉张断裂活动性量化表征及控藏作用
——以东营凹陷南坡金家地区为例
断块油气田
2021年 28卷 第2期
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Title
Quantitative characterization and reservoir control of strike-slip and extension fault activity: a case study of Jinjia area in the south slope of Dongying Sag
单位
中国石化胜利油田分公司物探研究院，山东 东营 257022
中国石化胜利油田分公司纯梁采油厂，山东 博兴 256504
Organization
Geophysical Research Institute, Shengli Oilfield Company, SINOPEC, Dongying 257022, China
Chunliang Oil Production Plant, Shengli Oilfield Company, SINOPEC, Boxing 256504, China
Abstract
12The discovery of Jinjia strike-slip and extension fault zone is of great significance in promoting the exploration of Kongdian Formation in the south slope of Dongying Depression. Based on seismic data, the structural characteristics of Jinjia strike-slip-extension fault zone are studied, and an evaluation method suitable for strike-slip-extension fault activity is proposed. The controlling effect of Jinjia fault zone on hydrocarbon accumulation is clarified. The study shows that the Jinjia fault zone is an inherited NE-trending dextral strike-slip and extension fault zone that began to develop in the early Mesozoic. In the early stage of development, the Jinjia fault zone is a single and steep strike-slip fault with large strike-slip displacement. Later the strike-slip strength weakened, and the fault zone evolved into en echelon assemblage style in the plane, and negative flower structure in the section. Jinjia strike-slip and extension fault zone is a NE-trending oil and gas transmission channel, and also controls a series of structural and structural lithologic reservoirs. The oil-bearing height decreases gradually from north to South and from fault zone to both sides, forming a model of oil and gas accumulation with transport in pressure relief zone and enrichment in the pressure increase zone.
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