四川盆地东南部小河坝组优质储层的形成机制
发布时间：2019-06-09 11:55
【摘要】：探讨四川盆地东南部下志留统小河坝组砂岩形成优质储层的控制因素及形成机制。以野外剖面测量为基础,通过孔渗分析、薄片鉴定、阴极发光及扫描电镜等手段,结合前人的研究成果,对小河坝组海相碎屑岩的储层形成机制进行分析。认为沉积微相控制了储层形成的先决条件,水下分流河道和远砂坝主要沉积了一套粉砂岩,具有形成储层的先天条件;而分流间湾主要沉积了一套泥岩或粉砂质泥岩,不能形成储层。生烃中心对小河坝组储层具有重要的控制作用,砂岩中沥青的含量与生烃中心的距离具有明显的负相关性。岩性在纵向上的叠置关系也是影响储层形成的重要因素,具有砂泥互层的地层结构,因砂岩不易压实和胶结,可形成相对较好的储层;而厚层的砂岩因压实和胶结作用严重,反而难以形成好的储层。
[Abstract]:The controlling factors and formation mechanism of high quality reservoir formation of Lower Silurian Xiaoheba formation in southeastern Sichuan Basin are discussed. On the basis of field profile measurement, the reservoir formation mechanism of marine clastic rock in Xiaoheba formation is analyzed by means of porosity and permeability analysis, thin slice identification, cathodoluminescence and scanning electron microscope, combined with previous research results. It is considered that sedimentary microfacies control the prerequisites for reservoir formation, and a set of siltstone is mainly deposited in underwater shunt channel and far sand bar, which has the innate conditions for reservoir formation. The shunt bay mainly deposits a set of mudstone or silty mudstone, which can not form reservoir. The hydrocarbon generation center plays an important role in controlling the reservoir of Xiaoheba formation, and the content of asphalt in sandstone is negatively correlated with the distance of hydrocarbon generation center. The vertical superposition relationship of lithology is also an important factor affecting reservoir formation. It has the formation structure of sand and mud interlayer. Because sandstone is not easy to compaction and cement, it can form a relatively good reservoir. However, thick sandstone is difficult to form a good reservoir because of its serious compaction and cement formation.
【作者单位】： 中国石化勘探分公司;油气藏地质及开发工程国家重点实验室(成都理工大学);
【基金】：国家科技重大专项(2016ZX05002-004-004)
【分类号】：P618.13
本文编号：2495535
[Abstract]:The controlling factors and formation mechanism of high quality reservoir formation of Lower Silurian Xiaoheba formation in southeastern Sichuan Basin are discussed. On the basis of field profile measurement, the reservoir formation mechanism of marine clastic rock in Xiaoheba formation is analyzed by means of porosity and permeability analysis, thin slice identification, cathodoluminescence and scanning electron microscope, combined with previous research results. It is considered that sedimentary microfacies control the prerequisites for reservoir formation, and a set of siltstone is mainly deposited in underwater shunt channel and far sand bar, which has the innate conditions for reservoir formation. The shunt bay mainly deposits a set of mudstone or silty mudstone, which can not form reservoir. The hydrocarbon generation center plays an important role in controlling the reservoir of Xiaoheba formation, and the content of asphalt in sandstone is negatively correlated with the distance of hydrocarbon generation center. The vertical superposition relationship of lithology is also an important factor affecting reservoir formation. It has the formation structure of sand and mud interlayer. Because sandstone is not easy to compaction and cement, it can form a relatively good reservoir. However, thick sandstone is difficult to form a good reservoir because of its serious compaction and cement formation.
【作者单位】： 中国石化勘探分公司;油气藏地质及开发工程国家重点实验室(成都理工大学);
【基金】：国家科技重大专项(2016ZX05002-004-004)
【分类号】：P618.13
【相似文献】
相关期刊论文 前10条
1 崔可;;岩矿记忆信息可恢复基岩裂缝储层形成的力学环境[J];海相油气地质;1999年03期
2 王多云,郑希民,李风杰,王峰,刘自亮,王志坤,李树同;低孔渗油气富集区优质储层形成条件及相关问题[J];天然气地球科学;2003年02期
3 赵文智;汪泽成;陈孟晋;郑红菊;;鄂尔多斯盆地上古生界天然气优质储层形成机理探讨[J];地质学报;2005年06期
4 冯进来;曹剑;胡凯;陈琰;杨少勇;刘云田;边立曾;张国卿;;柴达木盆地中深层混积岩储层形成机制[J];岩石学报;2011年08期
5 罗艳杨;季春海;柯思;苟玲;;阿根廷内乌肯盆地海相火山岩储层形成的控制因素[J];内蒙古石油化工;2010年14期
6 刘长江;桑树勋;陈世悦;张守鹏;黄华州;;渤海湾盆地石炭—二叠纪沉积作用与储层形成[J];天然气工业;2008年04期
7 金振奎;苏妮娜;王春生;;华北地台东部石炭系—二叠系优质煤储层形成分布控制因素[J];地质学报;2008年10期
8 黄文明;刘树根;张长俊;王国芝;徐国盛;雍自权;马文辛;;四川盆地寒武系储层特征及优质储层形成机理[J];石油与天然气地质;2009年05期
9 刘腾;彭军;王伟东;;大邑构造须家河组致密砂岩成岩作用及优质储层形成机理探讨[J];油气地球物理;2013年02期
10 钟大康;朱筱敏;;克拉2气田储层特征及优质储层形成机理[J];天然气工业;2007年01期
，本文编号：2495535
本文链接：https://www.wllwen.com/kejilunwen/shiyounenyuanlunwen/2495535.html
