杏北开发区萨葡高油层储层参数变化规律研究

发布时间：2018-06-17 03:21

本文选题：孔隙度 + 渗透率　；参考：《东北石油大学》2016年硕士论文

【摘要】：本论文以大庆油田杏北开发区萨葡高油层为主要研究对象,结合少量取芯井岩心实测数据和大量测井解释数据等资料,对储层的孔隙度、渗透率、含水饱和度分区分时间区间进行了系统的分析和探讨,综合考虑运用所选择的各类参数,综合、全面、客观的进行储层评价和分类,最后以渗透率、孔隙度为主要评价标准,对四大类储层进行了储层评价,进行了储层润湿性和相渗曲线分析。在本文中,在深入开展了解研究区钻井历史及资料分布情况的基础上,首先是对测井解释数据进行了可信度评估,用仅有的密闭取芯井化验分析数据对其测井解释数据进行了可信度评估,孔隙度、渗透率及含水饱和度的误差均在范围内,证明可以用测井解释数据分析变化规律。然后对七大区块进行系统的分析,包括不同区块同时期储层物性变化特征和不同区块同层位物性历史变化分析。下一步进行的是对密闭取芯井、井壁取芯井、探井储层物性分砂体进行探究,又对储层分类、润湿性及相渗曲线进行研究。最终结论为孔隙度整体升高的趋势,渗透率变化幅度较大,规律不明显,含水饱和度变化特征不明显,但有略微升高趋势。储层孔隙度和渗透率随注入水体积倍数的增加而增大,使得注入水在储层中的流动能力增强,特别是沿主流线方向增加的幅度较大,导致水的指进。与储层参数不变的情况对比,其无水采收率和最终采收率减小,开发效果变差。不同的储层润湿性会产生不同的驱油机理,而不同的驱油机理对水驱效率和剩余油分布都有重要影响。
[Abstract]:In this paper, the reservoir porosity and permeability are studied by using a small amount of core measured data and a large amount of log interpretation data, taking the Sapu high reservoir in Xingbei Development Zone of Daqing Oilfield as the main research object, and combining with a small amount of measured core data and a large amount of log interpretation data, etc. This paper systematically analyzes and discusses the time interval of water saturation partition, synthetically considers the application of selected parameters, synthetically, comprehensively and objectively carries out reservoir evaluation and classification. Finally, permeability and porosity are taken as the main evaluation criteria. Four types of reservoirs were evaluated and wettability and permeability curves were analyzed. In this paper, on the basis of deep understanding of drilling history and data distribution in the study area, the reliability of log interpretation data is evaluated. The reliability of the log interpretation data is evaluated by using the only analysis data of the closed coring well. The errors of porosity, permeability and water saturation are all in the range. It is proved that the log interpretation data can be used to analyze the variation rule. Then the seven blocks are systematically analyzed, including the characteristics of reservoir physical changes in different blocks at the same time and the historical changes of physical properties in the same layer of different blocks. The next step is to explore the reservoir physical properties of closed coring wells, sidewall coring wells and exploration wells, and to study reservoir classification, wettability and permeability curves. The final conclusion is that the porosity is increasing as a whole, the change of permeability is large, the law is not obvious, the change of water saturation is not obvious, but there is a tendency to increase slightly. The porosity and permeability of the reservoir increase with the increase of the volume multiple of injected water, which makes the flow capacity of injected water in the reservoir increase, especially along the main flow line, leading to the inflow of water. Compared with the constant reservoir parameters, the waterless recovery and the final recovery decrease, and the development effect becomes worse. Different reservoir wettability will produce different oil displacement mechanism, but different oil displacement mechanism will have important influence on water drive efficiency and remaining oil distribution.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P618.13

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