苏里格气田苏25区块盒8-山1段沉积相与储层特征研究

发布时间：2018-04-13 04:32

本文选题：鄂尔多斯盆地 + 苏里格气田　；参考：《西北大学》2015年硕士论文

【摘要】：本文以鄂尔多斯盆地伊陕斜坡北缘的苏25区块盒8段和山1段地层为研究对象,运用沉积学、石油地质学理论及科学研究方法,在对研究区取得的测井、录井、钻井取心及分析化验资料等深入分析的基础上,对苏25区块盒8段和山1段沉积特征进行了深入分析,取得了以下成果与认识：1.苏25区块的目的层段盒8段与山1段的岩石类型由于沉积相的不同而有所差异：在盒8段,岩石类型按观测到的岩石碎屑含量从高到低依次排列,分别为岩屑石英砂岩、石英砂岩以及岩屑砂岩；山1段则仍以岩屑石英砂岩最为发育,其次为岩屑砂岩,石英砂岩发育最少。2.研究区盒8下段为辫状河沉积,主要发育心滩和洪泛平原；盒8上段与山1段为曲流河沉积,主要发育河道和河漫沉积。3.苏25区块气藏类型为低孔低渗的岩性气藏,具有叠置的特点。4.苏25区的沉积相对储层展布具有控制作用,储层展布与含气层分布正相关,所以本次研究认为沉积相对气藏的分布有一定的间接控制作用。
[Abstract]:In this paper, the stratigraphy of Bo8 and Shan 1 member of Su25 block in the northern margin of Yi-shan slope in Ordos Basin is taken as the research object. The logging and logging obtained in the study area are carried out by using the theory of sedimentology, petroleum geology and scientific research methods.On the basis of deep analysis of drilling coring and analysis of laboratory data, the sedimentary characteristics of Bo8 member and Shan1 member in Su25 block are analyzed, and the following results and understanding are obtained.The rock types of Bo8 member and Shan1 member in Su25 block are different because of the different sedimentary facies. The rock types are arranged according to the observed rock clastic content from high to low in order of lithic quartz sandstone, respectively.Quartz sandstone and lithic sandstone are the most developed in Shan 1, followed by lithic sandstone, quartz sandstone is the least developed.In the study area, the lower member of Bo8 is braided river deposition, which is mainly developed in Xintan and flood plain, and the upper member of Bo8 and Shan 1 is meandering river deposition, which mainly develops channel and river diffuse sedimentation .3.The type of gas reservoir in Su25 block is lithologic gas reservoir with low porosity and low permeability, which has the characteristics of superposition.The distribution of sedimentary relative reservoir in Su25 area is controlled, and the distribution of reservoir is positively related to the distribution of gas-bearing reservoir, so it is considered that the distribution of sedimentary relative gas reservoir has some indirect control function.
【学位授予单位】：西北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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