镇泾地区页岩储层解释模型及测井评价研究

发布时间：2018-02-03 21:59

本文关键词： 镇泾地区张家滩页岩有机质含量吸附烃游离烃测井评价　出处：《中国地质大学》2016年博士论文　论文类型：学位论文

【摘要】：当前,国民经济的发展与能源供应之间的联系越来越紧密,国民经济的发展受能源供应不足的影响越来越大。世界各国都在积极需找新的接替能源,页岩油气、煤层气、油砂、重(稠)油、天然气水合物等新的接替能源的勘探开发得到了前所未有的重视。从新的接替能源的勘探开发现状和当前技术手段以及发展前景分析,页岩油气是当前世界最重要、最具有现实意义的接替能源之一,而对于页岩油气的评价是近年来测井方法研究的热点之一。本论文的研究区域镇泾地区构造上位于鄂尔多斯盆地天环向斜南段,主要研究层位为三叠系延长组长7段底部页岩(张家滩页岩)。在镇泾地区勘探开发的过程以及针对该地区开展的一系列研究工作中,发现镇泾地区延长组长7段页岩在区域内广泛分布,厚度较大,同时具有较高的有机碳含量和合适的热演化程度,具有很大的勘探潜力。本论文通过分析延长组长7段页岩的地质特征,分布特征等,利用测井、录井和化验分析等多种资料开展对页岩储层综合评价研究,建立了研究区页岩储层的评价模型和页岩评价参数的计算方法,建立了研究区页岩储层的评价标准,预测了页岩有利勘探区域,主要研究过程和取得成果如下：1.通过调研国内外相关文献,综述了页岩储层勘探开发和测井评价的历史进程及技术手段,了解了测井评价页岩储层的指标和技术现状；2.收集整理分析研究区岩心化验分析资料,了解整个研究区构造特征和地层特征,通过对基础数据的系统分析,总结出研究区页岩储层的岩性特征、地化特征和物性特征等；3.总结了研究区页岩储层的测井响应特征,主要表现为：高自然伽马、高电阻率(局部中低电阻率)、低体积密度、低光电截面吸收指数、高中子、高声波时差;4.利用多种方法综合识别研究区页岩储层,首先利用气测资料与常规测井曲线综合判别页岩发育层位,再利用曲线重叠法(电阻率和声波时差曲线为主)准确识别页岩的顶底界深度和厚度,得到了页岩储层厚度和埋深的平面分布图；5.根据研究区页岩样品化验分析资料和页岩储层评价的需要,建立了研究区页岩的岩石物理模型,该模型由骨架、粘土、水和有机质四部分组成；6.利用核磁共振测井、密度测井和元素俘获测井不同的测井原理和计算孔隙度时对干酪根体积定义之间的差别,建立了研究区页岩干酪根的计算方法；7.利用交会图法、△1gR法、铀含量法和测井曲线多元回归法对总有机碳含量进行了计算,并对几种方法的计算结果进行对比,结合研究区当前的测井系列,确定用声波时差、深电阻率和密度的回归公式计算总有机碳含量；8.利用孔隙度测井法和测井曲线多元回归法对孔隙度进行了计算,并对两种方法的计算结果进行对比,确定用孔隙度测井法计算孔隙度；9.利用快速模拟退火最优化算法求解骨架矿物成分分析模型的方法计算骨架矿物的含量；利用图版法、线性统计法和快速模拟退火最优化算法计算粘土矿物的含量,几种方法计算结果进行对比后,确定用快速模拟退火最优化计算骨架矿物含量和粘土矿物含量；10.在前人研究的基础上,对吸附烃含量的计算,提出了两种新的计算方法：改进付氏等温吸附模型、改进等温吸附方程,利用测试资料进行验证,确定采用精度高的改进付式等温吸附模型计算吸附烃含量；11.根据国内外页岩储层分类标准,对研究区页岩储层进行分类,优选出研究区页岩储层的关键参数,将页岩储层关键参数的图版重叠,确定镇泾地区5个有利页岩勘探区域。
[Abstract]:The relationship between the development of the national economy and energy supply more closely, the development of the national economy affected by the shortage of energy supply is more and more big. All the countries in the world are actively looking for new alternative energy, shale gas, coalbed methane, oil sands, heavy oil (thick), natural gas hydrate exploration and development to succeed the new energy has been hitherto unknown attention. From the analysis of the current situation of energy exploration and development of new replacement and the current technology and development prospects of shale oil and gas is the most important in the world, alternative energy is one of the most realistic, and for the evaluation of shale oil and gas is one of the research hotspots in recent years. Research on logging method the regional tectonic Zhenjing area this paper is located in the Erdos basin Tianhuan syncline section, the main research horizon for the member 7 of Yanchang Formation bottom shale (Zhang Jiatan shale). Exploration and development in Zhenjing area The process as well as a series of research work carried out in the area, found in Zhenjing area member 7 of Yanchang Formation shale is widely distributed in the area, large thickness, organic carbon content and high and suitable degree of thermal evolution, has great exploration potential. In this paper, through the analysis of the geological characteristics of the member 7 of Yanchang Formation shale the distribution characteristics, logging, data logging and laboratory analysis research on shale reservoir comprehensive evaluation, established the evaluation methods of shale reservoir model and shale evaluation parameters, establish the shale reservoir evaluation standard, prediction of shale prospecting area, the main research process and the results are as follows: 1. through the research of domestic and international relevant literature, history and technology evaluation of shale reservoir exploration and well logging were summarized, understand the logging evaluation of shale gas Status indicators and technical level; analysis of core laboratory analysis data of 2. collected, understand the structure characteristics of the study area and formation characteristics, through the system on the basis of data analysis, summed up the characteristics of shale reservoir lithology, geochemical characteristics and material characteristics; 3. summarizes the logging response characteristics of shale reservoir the study area, the main performance is: high natural gamma, high resistivity (local low resistivity), low density, low photoelectric absorption index section, high, high interval transit time; 4. using a variety of methods of comprehensive identification research area of shale reservoir, using gas logging data and logging curves of shale layer comprehensive evaluation then, using the curve overlapping method (resistivity and acoustic time curve) to accurately identify the shale of the top and bottom boundary depth and thickness, the planar distribution of the depth and thickness of shale reservoirs; 5. according to research The shale samples were analyzed to data and shale reservoir evaluation, established the rock physics model of the study area of shale, the model is composed of skeleton, clay, water and organic matter in four parts; 6. using nuclear magnetic resonance logging, density logging and logging elemental capture different measurement and calculation of Ihara Ri porosity between kerogen the definition of the volume difference calculation method was established on shale kerogen; 7. using crossplot method, Delta 1gR method, uranium content method and log regression method were used to calculate the total organic carbon content, and the calculation of several methods are compared with the current logging series of the study area, determine with acoustic time, total organic carbon content calculated regression formula deep resistivity and density; using 8. porosity logging logging curve method and multiple regression method to calculate the porosity, and the two methods By comparing the calculation results with calculation of porosity porosity logging method; fast simulated annealing optimization solution of mineral constituents in skeleton algorithm analysis model method to calculate the matrix mineral 9. utilization; use chart method, linear statistical method and the content of fast simulated annealing optimization algorithms of clay minerals, several methods by comparing the calculation results after calculation skeleton mineral content and clay mineral content by fast simulated annealing optimization; 10. on the basis of previous studies, the calculation of adsorption hydrocarbon content, put forward two new calculation methods: improved Fourier adsorption isotherm model, improved isotherm equation, verified by test data, determine the use of high precision improved calculation of adsorption hydrocarbon content type 11. isothermal adsorption model; according to the domestic and foreign shale reservoir classification standard, the classification of the study area of shale reservoir, and The key parameters of shale reservoir in the study area are selected, and the key parameters of the shale reservoir are overlapped to determine 5 favorable shale exploration areas in Zhenjing area.

【学位授予单位】：中国地质大学
【学位级别】：博士
【学位授予年份】：2016
【分类号】：P618.13;P631.81

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