SN地区核磁共振测井实验数据的地质应用研究

发布时间：2018-04-22 23:13

  本文选题：核磁共振 + T_2截止值　； 参考：《东北石油大学》2017年硕士论文

【摘要】：为了促进核磁共振测井技术在SN地区的推广和应用,论文通过系统分析岩心样品核磁实验数据,深入分析并总结饱和T_2谱和离心T_2谱在形态上的关联性和相似性,研究压汞毛管压力资料刻度测井T_2谱积分曲线的方法,研究利用岩心实验分析数据、核磁测井资料、常规测井资料来确定储层分类参数等手段,建立了一套相对完善的形态法确定T_2截止值的方法、T_2谱与压汞毛管压力曲线标定的方法以及利用核磁测井实验数据进行储层分类的方法。论文通过对实验数据的分析,提出了根据核磁测井T_2谱形态特征对测井T_2谱分类并确定其T_2截止值的新方法,建立了逐点自动确定核磁测井T_2截止值的新技术。论文明确指出了毛管压力曲线与核磁测井T_2谱积分曲线的非线性转换关系,发展了传统的单一线性系数刻度方法。建立了按储层类型定量刻度核磁测井T_2谱的实用方法和技术。根据核磁测井资料计算的储层参数,将储层分为中高孔中高渗、中孔中渗、低孔低渗和特低孔特低渗四种类型,分别对每一类储层建立了各自的刻度模型,实现了核磁测井毛管压力曲线的转换和孔径分布谱定量计算。利用核磁共振数据处理计算的储层宏、微观参数,论文对不同类型储层的特征结合常规测井的研究,对储层进行进一步分类,同时对每种储层的特征进行了宏、微观表征。实践表明,此次建立以核磁测井为主的测井综合评价储层及储层分类的方法与技术指标体系可以实用于目标区,并可进一步推广到准噶尔盆地油气勘探开发的储层评价工作中。
[Abstract]:In order to promote the extension and application of NMR logging technology in SN region, the paper analyzes the nuclear magnetic field (NMR) experimental data of core samples systematically, analyzes and summarizes the morphological correlation and similarity between saturated T _ 2 spectrum and centrifugal T _ 2 spectrum. This paper studies the method of calibrating the T _ 2 spectrum integral curve of pressure data of mercury-infill capillary, and studies the methods of determining reservoir classification parameters by using core experimental analysis data, nuclear magnetic logging data and conventional logging data, etc. A set of relatively perfect morphological method for determining T _ 2 cutoff value is established. The calibration method of T _ 2 spectrum and mercury injection capillary pressure curve and the method of reservoir classification based on nuclear magnetic logging experimental data are established. Based on the analysis of the experimental data, a new method of classifying and determining the T _ 2 cutoff value of nuclear magnetic logging (NMR) logging is proposed according to the morphological characteristics of the Tflesh _ 2 spectrum. A new technique for automatically determining the T _ 2 cutoff value of nuclear magnetic logging is established. In this paper, the nonlinear transformation relationship between capillary pressure curve and nuclear magnetic logging Tass 2 spectrum integral curve is pointed out, and the traditional single linear coefficient calibration method is developed. A practical method and technique for quantificationally calibrating nuclear magnetic logging Tass _ 2 spectrum according to reservoir type is established. According to the reservoir parameters calculated by nuclear magnetic logging data, the reservoir is divided into four types: medium and high porosity and high permeability, middle porosity and medium permeability, low porosity and low permeability, and very low porosity and ultra-low permeability. The calibration models for each kind of reservoir are established respectively. The conversion of capillary pressure curve and quantitative calculation of pore size distribution spectrum are realized. By using the macro and micro parameters calculated by nuclear magnetic resonance data processing, the characteristics of different types of reservoirs combined with the study of conventional logging are further classified in this paper. At the same time, the characteristics of each reservoir are characterized by macroscopes and microscopes. The practice shows that the method and technical index system of comprehensive evaluation of reservoir and reservoir classification based on nuclear magnetic logging can be applied to the target area and can be further extended to the reservoir evaluation of oil and gas exploration and development in Junggar Basin.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13;P631.81
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本文编号：1789371