MD区块高含水开发期剩余油分布规律研究

发布时间：2018-06-18 21:11

本文选题：高含水开发期 + 剩余油　；参考：《西安石油大学》2015年硕士论文

【摘要】：油田为实现高含水期持续性开发,剩余油分布规律研究是基础。综合目前勘探开发成果,在一个地区要预测优质储层发育带及正确评价油、气、水关系,就要系统研究其储层特征,因此,急需对主力油层进行正确的划分和对比,掌握油藏范围内储集砂体的纵、横向分布规律和沉积微相的发育特征,以及储层非均质性特征,分析储层特征并在此基础上进行剩余油分布规律研究。MD区块开发后期进入高含水开发期,进行剩余油研究意义重大,剩余油研究可以揭示油气分布和变化规律,明确调整挖潜的方向,为科学预测各项开发指标和挖潜方向奠定良好基础。利用研究区储层物性资料,结合前人有关地层划分对比方案,在现有地层划分方案基础上,开展s2储层地层划分与对比,确定统一分层标准并对研究区目的层段内所有钻井进行分层,并建立骨架剖面,为构造特征及后续研究提供基础。利用研究区岩心及测井资料,根据钻井岩芯观察、测井曲线特征分析研究三间房组地层沉积环境,绘制s2测井相图版,先分析单井沉积相,再分析剖面沉积相,结合沉积相类型及相展布特征,查明s2出储层主力砂体的展布特征,绘制s2各小层沉积微相平面图,描述不同类型砂体的发育特征及空间展布。研究区录井、测井、区域地质等资料,研究s2储层的岩石学特征醒、成岩作用、孔隙结构及类型、结构及物性变化规律,分析成岩作用对储层的影响,在此基础上对储层做出综合评价。通过对已发现油气藏的解剖,总结油藏成藏特征,通过对研究区控制油气分布的因素分析,逐一研究各成藏要素对油气分布的影响作用,并最终总结出研究区内油气分布的主控因素及剩余油富集规律。综合上述研究,我们可以得出MD区块内剩余油分布主要集中在小断块的顶角处,后期挖潜需对此类区域进行重点开发的结论。
[Abstract]:In order to realize sustainable development in high water cut period, the study of remaining oil distribution is the foundation. In order to predict the development zones of high quality reservoirs and to correctly evaluate the relationship between oil, gas and water in a region, it is necessary to study the reservoir characteristics systematically. Therefore, there is an urgent need for the correct division and correlation of the main reservoirs. Master the vertical and lateral distribution of reservoir sand bodies and the characteristics of sedimentary microfacies development, as well as reservoir heterogeneity, On the basis of analyzing reservoir characteristics and studying the distribution law of remaining oil, the research of remaining oil distribution and variation can be revealed in the later stage of development of MD block, and it is of great significance to study remaining oil and gas in the later stage of development, and the research on remaining oil and gas can reveal the distribution and variation of oil and gas. It is clear to adjust the direction of tapping potential and lay a good foundation for scientific prediction of each development index and the direction of tapping potential. Using the reservoir physical property data in the study area, combining with the previous related stratigraphic division and correlation schemes, and based on the existing stratigraphic classification schemes, the stratigraphic division and correlation of the S2 reservoir are carried out. The unified standard of stratification and the stratification of all drilling wells in the target zone of the study area are determined, and the skeleton section is established, which provides the basis for the structural characteristics and subsequent research. According to the core observation and logging data of the study area, the sedimentary environment of Sanjianfang formation is analyzed according to the core observation and logging curve characteristics, and the s2 log phase diagram is drawn. The single well sedimentary facies and then the profile sedimentary facies are analyzed. Combined with sedimentary facies types and facies distribution characteristics, the distribution characteristics of the main sand bodies in s2 reservoir are found out, and the sedimentary microfacies plans of each s2 layer are plotted to describe the development characteristics and spatial distribution of different types of sand bodies. To study the data of logging, logging and regional geology in the study area, to study the petrological characteristics, diagenesis, pore structure and type, structure and physical properties of the S2 reservoir, and to analyze the influence of diagenesis on the reservoir. On this basis, a comprehensive evaluation of the reservoir is made. By dissecting the discovered reservoirs, summarizing the reservoir forming characteristics and analyzing the factors controlling the distribution of oil and gas in the study area, the effects of each reservoir forming factor on the oil and gas distribution are studied one by one. Finally, the main controlling factors of oil and gas distribution and the law of remaining oil enrichment in the study area are summarized. Based on the above research, we can draw the conclusion that the remaining oil distribution in MD block is mainly concentrated at the top corner of the small fault block, and that it is necessary to develop this kind of area in the later stage.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE327

【相似文献】