靖边油田梁镇油区延安组延9油藏精细描述

发布时间：2017-12-30 20:31

  本文关键词：靖边油田梁镇油区延安组延9油藏精细描述　出处：《西安石油大学》2017年硕士论文　论文类型：学位论文

  更多相关文章： 延9油层 油藏精细描述 储层评价

【摘要】：梁镇油区延9油层油藏天然能量不足,生产井产能低,产量递减快,很难达到长期稳产。由于目前对本区油藏的认识无法满足开发的需要,因此需要进行储层的油藏精细描述工作。本文运用石油地质学、层序地层学、沉积学等理论与技术方法,采用地质、地球物理测井、岩心分析等资料,从储层精细划分与对比、储层沉积相研究、储层特征研究、储层分类等方面进行分析,并结合生产实际建立了研究区储层综合分类评价标准。通过研究所取得的主要成果有:(1)本文采用测井曲线和等厚度法将延9油层从上到下划分为延91、延92和延933个小层。(2)研究区延9油层为曲流河相沉积系,主要发育曲流河道、天然堤、河漫滩三种沉积微相模式。(3)研究区储层主要表现为低孔,特低渗。延9油层三个小层层内非均质性程度相对较弱,但具有较强的层间非均质性,延91、延92小层平面非均质性较弱,延93小层平面非均质性较强。(4)根据研究区储层物性分类标准将研究区的井分为三类,延91Ⅰ类井占33%、Ⅱ类井占50%、Ⅲ类井占17%;延92Ⅰ类井占40%、Ⅱ类井占42%、Ⅲ类井占18%;延93Ⅰ类井占16%、Ⅱ类井占29%、Ⅲ类井占55%。且ⅠⅡⅢ类井的划分与实际生产数据吻合较好,储层分类符合实际情况。
[Abstract]:The reservoir of Yan9 reservoir in Liangzhen oil area is short of natural energy, low productivity of production well, and rapid decline of production, which makes it difficult to achieve long-term stable production. Because of the current understanding of reservoir in this area can not meet the needs of development. Therefore, it is necessary to carry out fine reservoir description. In this paper, the theory and technical methods of petroleum geology, sequence stratigraphy and sedimentology are used, and geological, geophysical logging and core analysis are used. From the reservoir fine division and correlation, reservoir sedimentary facies research, reservoir characteristics research, reservoir classification and other aspects of the analysis. Combined with the production practice, the comprehensive classification and evaluation standard of reservoir in the study area is established. The main results obtained through the research are as follows: 1) in this paper, Yan 9 reservoir is divided from top to bottom into Yan 91 by logging curve and equal thickness method. Yan92 and Yan933 sublayers. 2) the Yan9 oil layer in the study area is a meandering river facies sedimentary system, mainly developed meandering river channel and natural embankment. The reservoir in the study area is mainly characterized by low porosity and low permeability. The degree of heterogeneity in three small layers of Yan-9 reservoir is relatively weak, but it has strong interlayer heterogeneity, extension 91. According to the classification criteria of reservoir physical properties in the study area, the wells in the study area can be divided into three types, and the Yan91 鈪，

本文编号：1356412