鄂尔多斯盆地延长气田山西组气藏地质模型研究

发布时间：2018-01-01 08:10

本文关键词：鄂尔多斯盆地延长气田山西组气藏地质模型研究　出处：《西安石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：延长气田区域构造隶属伊陕斜坡东南位置的稳定克拉通沉积之上,根据鄂尔多斯盆地沉积演化的基本规律大体可知道该地区地势上应为东部高东低的沉积大背景,研究区上古生界山西组可划分为山1段和山2段两个小层,各部位均可见天然气产出。为了对研究区山西组储层地质特征有一个全面、深入的认识,为下一步勘探开发、提高气藏采收率提供坚实的地质基础,以沉积学、构造地质学、石油地质学、测井地质学、数学及地质统计学的最新成果为理论基础,以现代计算机技术和地质建模软件为手段,综合钻井、录井、测井、试油等各类动静态资料、各种分析化验及地层测试资料,对延长气田山西组藏地质模型进行了研究。根据地层对比原则,通过测井相的分析,研究区山西组山1段、山2段气层组属于三角洲前缘水下分流河道砂体与河口坝沉积。分流河道砂体是主要的储集层。砂体一般呈北—南向,不同期主砂体分布有一定的继承性;研究区目的层岩性主要为石英砂岩、岩屑石英砂岩以及岩屑砂岩,砂岩以低孔、低渗为特征;山西组气藏的主要特征为广覆式生烃,弥漫式充注,近距离运移,岩性式聚集,大面积成藏,准连续型分布。最后在综合地质研究的基础上,选用petrel软件,利用相控建模和插值建模的方法,建立了研究区目的层的构造、沉积相、储层属性等地质模型,并验证了其合理性。结果表明,在相控条件下建立的模型与地质认识是较为符合的。可以为该区合理开发方案的编制和下一步油藏数值模拟提供地质依据。
[Abstract]:The regional structure of Yanchang gas field belongs to the stable craton deposit in the southeast of Yishan slope. According to the basic rules of sedimentary evolution in Ordos Basin, it is generally known that the topography of this area should be a sedimentary background of high, east and low in the east, and the Upper Paleozoic Shanxi formation in the study area can be divided into two sub-layers: Shan 1 and Shan 2. In order to have a comprehensive and in-depth understanding of the reservoir geological characteristics of Shanxi formation in the study area, it provides a solid geological basis for further exploration and development, and improves the recovery of gas reservoirs to provide a solid geological basis for sedimentology. Based on the latest achievements of tectonic geology, petroleum geology, logging geology, mathematics and geostatistics, this paper takes modern computer technology and geological modeling software as the means to synthesize drilling, logging and logging. This paper studies the reservoir geological model of Shanxi formation in Yanchang gas field. According to the principle of stratigraphic correlation, the well logging facies are analyzed. The gas reservoirs of Shan 1 member and Shan 2 member of Shanxi formation in the study area belong to delta front underwater distributary channel sand body and estuarine dam deposit. Distributary channel sand body is the main reservoir. The distribution of main sand bodies in different periods has certain inheritance; The lithology of the study area is mainly composed of quartz sandstone, lithic quartz sandstone and lithic sandstone, which are characterized by low porosity and low permeability. The main characteristics of Shanxi formation gas reservoir are extensive hydrocarbon generation, diffuse filling, short distance migration, lithologic accumulation, large area accumulation and quasi-continuous distribution. Finally, on the basis of comprehensive geological research. By using petrel software and the methods of phase control modeling and interpolation modeling, the geological models of the target layer, such as structure, sedimentary facies and reservoir properties, are established, and the rationality of the model is verified. The model established under the condition of facies control is in good agreement with the geological understanding and can provide geological basis for the formulation of reasonable development plan and the further numerical simulation of reservoir in this area.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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