准噶尔盆地北缘哈拉阿拉特山构造带油气输导系统类型及运聚模式
发布时间：2019-07-08 10:22
【摘要】：准噶尔盆地北缘哈拉阿拉特山构造带经历多期构造运动的叠加改造,地质结构复杂,油气运聚规律复杂,极大地制约了油气勘探。以已发现油气藏为研究对象,采取地质解剖与地球化学分析相结合的方法,根据原油中生物标志化合物和含氮化合物等示踪指标在运移过程中的地质色层效应原理,对不同构造单元的油气输导特征进行研究。结果表明,超剥带与推覆—冲断带属于不同的油气输导系统,两者之间存在侏罗系八道湾组底不整合风化黏土层、不整合面之上灰(泥)质砾岩和推覆体顶部石炭系火山岩风化"硬壳"多重致密分隔层;且两者具有不同的油气来源和油气输导样式。浅层超剥带原油来源于玛湖凹陷风城组烃源岩,为远源"断—毯"横向输导模式;中深层推覆—冲断带油气来源于哈山地区风城组烃源岩,为近源"多断"联合垂向输导模式,其中,推覆叠置区为"断—缝"网状输导,冲断叠加区为"断—砂"阶梯输导,断褶变形区为断层优势输导。不同构造单元的输导要素差异配置控制了油气运聚成藏,形成了研究区立体含油的分布格局。
[Abstract]:The tectonic belt of the north margin of the Zhilerian basin is subjected to the superposition and transformation of the multi-period tectonic movement, the geological structure is complicated, the oil and gas migration and accumulation law is complicated, and the oil and gas exploration is greatly restricted. taking the discovered oil and gas reservoir as the research object, taking the method of combining the geological and geochemical analysis, and according to the principle of the geological color layer effect in the migration process of the trace indexes such as the biological marker compound and the nitrogen-containing compound in the crude oil, The characteristics of oil and gas transmission in different tectonic units were studied. The results show that the overstripping zone and the nappe thrust belt belong to different oil and gas transmission systems, and there is a multiple dense separation layer of the weathered "hard shell" of the carboniferous volcanic rock on the top of the upper Carboniferous volcanic rock in the upper part of the Jurassic Abay Formation. And the two have different oil and gas sources and oil and gas transmission patterns. The crude oil in the shallow layer is derived from the source rock of the Fengcheng Formation of the Mahu depression, and it is the lateral transport mode of the far-source "cut-off blanket". The oil and gas in the deep-layer thrust belt are derived from the source rock of the Fengcheng Formation in the area of Haisha and the vertical transport mode of the near-source "multi-break". The nappe overlap area is the "cut-off seam" mesh transmission, and the thrust and break overlap area is the "cut-off sand" step transmission, and the fault fold deformation area is the fault advantage transmission. The distribution pattern of three-dimensional oil-bearing distribution in the study area is formed by the differential configuration of the transmission factors of different tectonic units.
【作者单位】： 中国石化胜利油田分公司勘探开发研究院西部分院;
【基金】：国家科技重大专项“碎屑岩层系大中型油气田富集规律与勘探关键技术”(编号:2011ZX05002-002) 中国石化科技重大攻关课题“哈山构造带成藏主控因素研究”(编号:P13020)联合资助
【分类号】：P618.13
本文编号：2511519
[Abstract]:The tectonic belt of the north margin of the Zhilerian basin is subjected to the superposition and transformation of the multi-period tectonic movement, the geological structure is complicated, the oil and gas migration and accumulation law is complicated, and the oil and gas exploration is greatly restricted. taking the discovered oil and gas reservoir as the research object, taking the method of combining the geological and geochemical analysis, and according to the principle of the geological color layer effect in the migration process of the trace indexes such as the biological marker compound and the nitrogen-containing compound in the crude oil, The characteristics of oil and gas transmission in different tectonic units were studied. The results show that the overstripping zone and the nappe thrust belt belong to different oil and gas transmission systems, and there is a multiple dense separation layer of the weathered "hard shell" of the carboniferous volcanic rock on the top of the upper Carboniferous volcanic rock in the upper part of the Jurassic Abay Formation. And the two have different oil and gas sources and oil and gas transmission patterns. The crude oil in the shallow layer is derived from the source rock of the Fengcheng Formation of the Mahu depression, and it is the lateral transport mode of the far-source "cut-off blanket". The oil and gas in the deep-layer thrust belt are derived from the source rock of the Fengcheng Formation in the area of Haisha and the vertical transport mode of the near-source "multi-break". The nappe overlap area is the "cut-off seam" mesh transmission, and the thrust and break overlap area is the "cut-off sand" step transmission, and the fault fold deformation area is the fault advantage transmission. The distribution pattern of three-dimensional oil-bearing distribution in the study area is formed by the differential configuration of the transmission factors of different tectonic units.
【作者单位】： 中国石化胜利油田分公司勘探开发研究院西部分院;
【基金】：国家科技重大专项“碎屑岩层系大中型油气田富集规律与勘探关键技术”(编号:2011ZX05002-002) 中国石化科技重大攻关课题“哈山构造带成藏主控因素研究”(编号:P13020)联合资助
【分类号】：P618.13
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