乌尔禾百口泉组低渗油藏流体分布特征及合理开发研究

发布时间：2018-06-13 23:22

本文选题：低渗透 + 流体分布特征　；参考：《成都理工大学》2017年硕士论文

【摘要】：我国低渗透油藏原油资源量大、分布广、开发前景广阔,但低渗透油藏也具有孔隙度小、渗透率低、孔隙结构复杂、储层非均质强等特点,储层流体分布情况受这些因素影响而更加复杂。所以,对油藏储层流体分布特征进行分析研究对合理开发油藏具有极其重要的意义。故本文以乌尔禾乌5井区百口泉组油藏为例,收集研究区各项资料,在大量调研储层流体分布研究方法相关文献的基础上,主要开展了如下研究:(1)根据研究区油藏地质相关资料对油藏地理位置、储层构造、沉积环境、四性特征、渗流特征等各项特征进行了分析,进而确定了研究区百口泉组油藏油藏类型;(2)通过大量调研储层流体定性识别方法与流体饱和度定量分析方法,结合研究区资料收集情况选取了直观判别法、曲线重叠法、交会图法开展储层流体定性识别研究,选取含油高度法和阿尔奇法开展流体饱和度定量分析研究;(3)一方面,从定性角度构建了孔隙度-深浅双侧向电阻比交会图定性识别储层流体特征;另一方面,从定量角度先利用含油高度法宏观分析了储层流体分布特征,确定了主力油层宏观油水分布特征,其次对研究区阿尔奇公式进行了修正,构建出了修正后的阿尔奇公式交会图版,定量分析了储层流体饱和度;通过分析研究区储层流体饱和度分布情况与储量分布情况,对其分布差异进行了分析,并进一步分析了储层流体饱和度分布影响因素;(4)通过分析研究区生产现状及单井产能,对研究区产能分布情况进行了分析,结合流体分布情况将研究区分为东、中、西、南四个分区,并对研究区影响产能的相关因素进行了分析与确定;(5)在以上研究的基础上对研究区分为已开发区(东、中、西)与未开发区(南)开展了合理开发对策研究,通过不同分区典型井区合理开发方式的确定对已开发区合理开发方式进行了论证,确定了分区开发开发效果更好;南区则根据饱和度分布进行了井网部署研究,取得了较好开发效果。
[Abstract]:Low permeability reservoirs in China are characterized by large amount of crude oil resources, wide distribution and broad prospects for development. However, low permeability reservoirs are also characterized by small porosity, low permeability, complex pore structure, strong heterogeneity and so on. The distribution of reservoir fluid is complicated by these factors. Therefore, the analysis of reservoir fluid distribution is of great significance to the rational development of reservoir. Therefore, this paper takes Baikouquan formation reservoir in Wuerhewu well 5 area as an example, collects all kinds of data in the study area, and on the basis of a large number of literature on the research methods of reservoir fluid distribution, The main research work is as follows: (1) based on the relevant reservoir geological data in the study area, the reservoir location, reservoir structure, sedimentary environment, four characteristics, percolation characteristics and other characteristics are analyzed. Furthermore, the reservoir type of Baikouquan formation in the study area is determined. Through a large number of investigations, the qualitative identification method of reservoir fluid and the method of quantitative analysis of fluid saturation are selected. In combination with the data collection in the study area, the intuitive discriminant method and the curve overlap method are selected. Cross plot method is used to identify reservoir fluid qualitatively, and oil height method and Archie method are selected to carry out quantitative analysis of fluid saturation. In this paper, the reservoir fluid characteristics are qualitatively identified by the porosity-depth double lateral resistance cross plot, on the other hand, the reservoir fluid distribution characteristics are analyzed macroscopically by using the oil-bearing height method from the quantitative point of view. The macroscopic oil-water distribution characteristics of the main reservoir are determined. Secondly, the Archie formula in the study area is modified, the modified Archie formula intersection chart is constructed, and the reservoir fluid saturation is quantitatively analyzed. By analyzing the distribution of reservoir fluid saturation and reserves distribution, the difference of reservoir fluid saturation distribution is analyzed, and the influencing factors of reservoir fluid saturation distribution are further analyzed. Based on the analysis of productivity distribution in the study area, the study is divided into four sub-regions, east, middle, west and south, combined with fluid distribution. On the basis of the above research, we have carried out a reasonable development countermeasure study on the existing development zone (east, middle, west) and undeveloped zone (south). Through the determination of reasonable development methods of typical well areas in different zones, the reasonable development modes of the development zones have been demonstrated, and it has been determined that the zoning development effect is better, while in the southern region, the well pattern deployment is studied according to the saturation distribution. Good development effect has been achieved.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE348

【参考文献】