新立油田Ⅲ区块水淹层测井解释方法研究

发布时间：2018-04-15 15:09

本文选题：新立Ⅲ区块 + 水淹层　；参考：《东北石油大学》2015年硕士论文

【摘要】：吉林新立油田经过多年开发,目前已进入“双高”开采阶段,为了进一步实现区块稳产、提高水驱采收率,需要进一步深化剩余油分布规律认识,明确剩余资源潜力状况,有必要研究新的水淹层测井解释方法。本文在国内外资料调研基础上,首先采用极差正规化方法、趋势面分析法、直方图法对自然伽马、自然电位、声波时差、电阻率曲线进行标准化；然后以密闭取心资料为基础,以水淹机理分析为指导,精细建立隔夹层识别标准；其次研究了水淹层混合水电阻率确定方法,分析了水淹层测井响应特征,总结出了水淹前期、中期、后期油层电阻率变化规律；给出了岩石物理相划分方法,总结了各类岩石物理相的分布及水淹特征；并且基于水淹层测井响应特征和水淹前期、中期、后期油层电阻率变化规律以及各类岩石物理相的水淹特征,采用交会图法、曲线重叠法等建立了水淹等级定性识别法；在岩心刻度测井技术基础上,利用数理统计法、支持向量机算法建立精细测井解释模型、产水率、驱油效率等模型,综合确定了水淹层定性—定量解释标准,形成一套完整的支持多井水淹层精细解释的、智能多参数的解释方法。利用所形成的适合于新立油田Ⅲ区块的水淹层测井解释方法,在生产中进行应用,开展多井、多资料综合解释,提高了测井解释的精度,了解各层的动用及水淹程度,为确定射孔层位提供了依据,并提出潜力剩余油层进行压裂改造,增加了产能,成果得到较好的推广应用。该论文成果对于提高该区块水淹层测井解释的精度具有重要的意义,同时对于其它开发中后期老油田还具有很大的推广应用价值。
[Abstract]:After years of development, Xinli Oilfield in Jilin Province has entered the stage of "double high" production. In order to further realize stable production in blocks and improve water drive recovery, it is necessary to further deepen the understanding of the distribution law of remaining oil and clarify the potential status of remaining resources.It is necessary to study a new logging interpretation method for flooded zones.On the basis of domestic and foreign data investigation, this paper first uses range normalization method, trend surface analysis method, histogram method to standardize natural gamma, natural potential, acoustic moveout and resistivity curve, and then based on closed coring data.Based on the analysis of water-flooded mechanism, the identification standard of intercalation is established. Secondly, the method of determining the resistivity of mixed water-flooded zone is studied, and the logging response characteristics of water-flooded zone are analyzed, and the early and middle periods of water-flooded zone are summarized.The method of rock physical facies division is given, and the distribution and waterflooding characteristics of all kinds of rock physical facies are summarized, and based on the response characteristics of logging and the early and middle periods of water flooding, the oil reservoir resistivity is changed in the later period, and the distribution and water flooding characteristics of all kinds of rock physical facies are summarized.In the later period, the law of resistivity variation and the water-flooded characteristics of various rock physical facies are used to establish the qualitative identification method of water-flooded grade by means of cross plot method and curve overlap method, and the mathematical statistics method is used on the basis of core calibration logging technology.The support vector machine (SVM) algorithm is used to establish fine log interpretation model, water production rate, oil displacement efficiency and so on. The qualitative and quantitative interpretation criteria of water-flooded zones are comprehensively determined, and a complete set of fine interpretation supporting multi-well water-flooded zones is formed.Intelligent multi-parameter interpretation method.Using the logging interpretation method which is suitable for the third block of Xinli Oilfield, the logging interpretation method is applied in production, and the comprehensive interpretation of multi-well and multi-data is carried out. The precision of log interpretation is improved, and the production of each layer and the degree of waterflooding are understood.It provides the basis for determining the perforation horizon, and puts forward that the potential remaining reservoir is fracturing, which increases the productivity, and the results are popularized and applied.The results of this paper are of great significance for improving the precision of logging interpretation of waterflooded zones in this block, and are also of great value in popularizing and applying to other old oilfields in the middle and late stages of development.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;P631.81

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