渤海湾盆地低勘探程度凹陷特殊地质条件、成因类型及油气勘探意义
刘海涛 , 沈传波 , 于海涛 , 肖阳 , 孟涛 , 董晓伟 , 李聪 , 吴路路 , 葛翔 , 李婷婷
地球科学 ›› 2026, Vol. 51 ›› Issue (5) : 1619 -1635.
渤海湾盆地低勘探程度凹陷特殊地质条件、成因类型及油气勘探意义
Special Geological Conditions, Genetic Types, and Significance of Petroleum Exploration in Low Exploration Degree Depressions of Bohai Bay Basin
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为破解渤海湾盆地富油气凹陷储量接替压力,推动新区油气资源快速转化,本研究通过系统梳理各低勘探程度凹陷勘探与研究现状,结合地质分析与多维度分类评价方法,剖析其特殊地质条件、类型分布及勘探意义.结果表明,低勘探程度凹陷具备咸化湖盆优质烃源岩、深大断裂与异常热流改善成藏条件、与富油气凹陷协同演化等优势,基于主观原因、实施效果、结构类型、沉降类型、生烃机制、与主力凹陷协同演化关系等多维度可划分为多种类型,平面分区特征明显.结论认为,低勘探程度凹陷勘探前景良好,不同类型凹陷地质与勘探难点差异显著,经多维度分类评价与精准部署,通过揭示优势成藏条件有望实现油气突破,推动盆地油气资源有效接替.
To address the pressure of reserve replacement in the oil-rich sags of the Bohai Bay basin and promote the rapid conversion of oil and gas resources in new areas, this study systematically reviews the exploration and research status of various low exploration degree depressions, and analyzes their special geological conditions, type distribution, and exploration significance by combining geological analysis with multi-dimensional classification evaluation methods. The results indicate that low exploration depressions possess advantages such as high-quality hydrocarbon source rocks in salinized lake basins, improved reservoir-forming conditions due to deep faults and abnormal heat flow, and co-evolution with oil-rich sags. Based on multiple dimensions including subjective reasons, implementation effects, structural types, subsidence types, hydrocarbon generation mechanisms, and co-evolution relationships with major depressions, various types can be classified, with distinct planar zoning characteristics. It is concluded that low exploration degree depressions have good exploration prospects, and there are significant differences in geological and exploration difficulties among different types of depressions. Through multi-dimensional classification evaluation and precise deployment, it is expected to achieve oil and gas breakthroughs by revealing advantageous reservoir-forming conditions, thereby promoting effective succession of oil and gas resources in the basin.
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油气重大专项(2024ZD1400100)
黑龙江省自然科学基金项目(LH2024D007)
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