冀中坳陷地层岩性油气藏分布特征与主控因素
发布时间：2018-10-22 12:01
【摘要】：为了进一步弄清冀中坳陷不同类型凹陷地层岩性油气藏的分布规律与控制因素,根据各凹陷独特的地质结构和沉积特征,将其细分为继承型、偏移型和早盛型等3类。通过不同凹陷地层岩性油气藏的分布特征,指出继承型凹陷勘探面积最大、勘探前景最好,偏移型凹陷勘探潜力居中,而早盛型凹陷成藏条件相对较差,同时指出沉积体系与构造背景配置在缓坡带、陡坡带和洼槽区等不同区带均可形成不同类型的地层岩性油气藏分布聚集区。主控因素分析认为,地层超剥带、岩相过渡带、湖岸线变迁带均是形成多种岩性或地层圈闭的有利区带,不同类型的砂岩储集体发生岩性、物性及接触关系等变化强烈,为地层岩性圈闭发育提供了有利条件;有利成岩相带和有利岩相带共同控制了地层岩性油气藏"甜点"的成群成带富集,"五带"附近是深化地层岩性油气藏勘探的重要方向。
[Abstract]:In order to further understand the distribution and controlling factors of lithologic reservoirs in different types of sag in Jizhong depression, according to the unique geological structure and sedimentary characteristics of each sag, it can be divided into three types: inherited type, migration type and early flourishing type. According to the distribution characteristics of lithologic reservoirs in different sag, it is pointed out that the inherited sag has the largest exploration area, the best exploration prospect, the middle exploration potential of the migration depression, and the relatively poor reservoir forming condition in the Zusheng sag. At the same time, it is pointed out that different types of stratigraphic lithologic oil and gas reservoirs can be formed in different zones such as gentle slope zone, steep slope zone and depression zone. According to the analysis of main controlling factors, stratigraphic overstripping zone, lithofacies transitional zone and lacustrine line transition zone are all favorable zones for forming various lithology or stratigraphic traps. The lithology, physical properties and contact relationship of different types of sandstone reservoirs are changed strongly. The favorable diagenetic facies belt and favorable lithofacies belt together control the accumulation of stratigraphic lithologic reservoir "desserts" in groups, and the vicinity of "five zones" is the important direction to deepen the exploration of stratigraphic lithologic reservoirs.
【作者单位】： 中国石油大港油田分公司;中国石油华北油田分公司勘探开发研究院;中国石油大学(北京)地球科学学院;
【基金】：国家重大科技专项“冀中坳陷增储领域精细地质评价与勘探实践”(编号:2011ZX05006-005-003) 中国石油股份有限公司重大科技攻关项目“成熟盆地油气成藏机制与精细勘探目标评价”(编号:2011D-0703)联合资助
【分类号】：P618.13
[Abstract]:In order to further understand the distribution and controlling factors of lithologic reservoirs in different types of sag in Jizhong depression, according to the unique geological structure and sedimentary characteristics of each sag, it can be divided into three types: inherited type, migration type and early flourishing type. According to the distribution characteristics of lithologic reservoirs in different sag, it is pointed out that the inherited sag has the largest exploration area, the best exploration prospect, the middle exploration potential of the migration depression, and the relatively poor reservoir forming condition in the Zusheng sag. At the same time, it is pointed out that different types of stratigraphic lithologic oil and gas reservoirs can be formed in different zones such as gentle slope zone, steep slope zone and depression zone. According to the analysis of main controlling factors, stratigraphic overstripping zone, lithofacies transitional zone and lacustrine line transition zone are all favorable zones for forming various lithology or stratigraphic traps. The lithology, physical properties and contact relationship of different types of sandstone reservoirs are changed strongly. The favorable diagenetic facies belt and favorable lithofacies belt together control the accumulation of stratigraphic lithologic reservoir "desserts" in groups, and the vicinity of "five zones" is the important direction to deepen the exploration of stratigraphic lithologic reservoirs.
【作者单位】： 中国石油大港油田分公司;中国石油华北油田分公司勘探开发研究院;中国石油大学(北京)地球科学学院;
【基金】：国家重大科技专项“冀中坳陷增储领域精细地质评价与勘探实践”(编号:2011ZX05006-005-003) 中国石油股份有限公司重大科技攻关项目“成熟盆地油气成藏机制与精细勘探目标评价”(编号:2011D-0703)联合资助
【分类号】：P618.13
【参考文献】
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