裂缝性储层的测井识别及评价方法研究

发布时间：2018-05-19 09:30

本文选题：裂缝识别 + 裂缝参数　；参考：《东华理工大学》2015年硕士论文

【摘要】：随着石油工业的迅猛发展和全球对能源的巨大需求,裂缝性油气藏的勘探和开发已显得尤为重要,裂缝性储层的识别和评价是裂缝性油气藏勘探开发的基础。本文在国内外学者们对裂缝性储层所做研究的基础上,以川西南地区致密砂岩储层为研究对象,对裂缝识别和储层评价工作进行了研究,其主要的研究工作及成果有以下几点:(1)为了提高电成像测井的裂缝识别精度,对研究区的电成像测井数据进行了多种滤波处理,可以有效增强裂缝信息,在一定程度上提高了电成像测井裂缝识别精度。(2)利用小波变换方法、中值滤波和均值滤波方法对电成像测井和常规测井数据进行滤波处理,将滤波数据与裂缝密度的相关性分析作为最佳滤波方法的选择依据。其中,中值滤波能较好的体现出裂缝形态和裂缝位置信息;小波变换能较好的体现出储层裂缝发育段的信息。(3)在常规测井数据滤波处理的基础上,建立裂缝指示曲线对储层裂缝发育段进行识别研究。利用单一的测井方法识别裂缝发育段会有较大误差,需要将多种测井方法或裂缝指示曲线相结合,构建综合裂缝指示曲线来识别裂缝发育段。其中,综合裂缝指示曲线所识别的裂缝发育段与成像测井所识别的裂缝发育段有很好的对应,识别效果较理想。(4)利用常规测井数据对裂缝发育段的裂缝参数进行求取,将所求取的裂缝参数与电成像测井所划分的储层分级评价进行对比分析,建立裂缝参数对储层分级的标准。(5)以裂缝性储层分级为基础,将裂缝开度、渗透率参数与成像测井提取的裂缝密度相结合,建立储层分类标准,将该分类标准与裂缝孔隙度、次生孔隙度、裂缝概率和裂缝分维参数进行对比分析,得出利用常规测井曲线对裂缝性储层进行分类的标准,并进行应用。
[Abstract]:With the rapid development of petroleum industry and the huge global demand for energy, the exploration and development of fractured reservoirs has become particularly important, and the identification and evaluation of fractured reservoirs is the basis of exploration and development of fractured reservoirs. Based on the research of fractured reservoirs made by domestic and foreign scholars, this paper takes the dense sandstone reservoirs in southwest Sichuan as the research object, and studies the work of fracture identification and reservoir evaluation. Its main research work and results are as follows: (1) in order to improve the fracture identification accuracy of the electric imaging logging, various filtering processes have been carried out on the electrical imaging logging data in the study area, which can effectively enhance the fracture information. To some extent, the accuracy of fracture recognition in electrical imaging logging is improved. (2) Wavelet transform, median filter and mean filter are used to filter and process electrical imaging logging and conventional logging data. The correlation analysis between the filtered data and the crack density is taken as the basis for selecting the best filtering method. Among them, median filter can better reflect the information of fracture shape and fracture position, wavelet transform can better reflect the information of reservoir fracture development section, and on the basis of conventional logging data filtering, wavelet transform can better reflect the information of reservoir fracture development section. The fracture indication curve is established to identify the fracture development section. It is necessary to combine multiple logging methods or fracture indicator curves to identify the developed fracturing segments by using a single logging method. Among them, the fracture development segment identified by synthetic fracture indication curve has a good correspondence with the fracture development segment identified by imaging logging, and the recognition effect is ideal. 4) using conventional logging data, the fracture parameters of the fracture developing section are obtained. The fracture parameters obtained are compared with the reservoir classification and evaluation by electrical imaging logging, and the fracture opening degree is established on the basis of fracture reservoir classification based on fracture parameter classification. Combining permeability parameters with fracture density extracted by imaging logging, a reservoir classification standard is established and compared with fracture porosity, secondary porosity, fracture probability and fracture fractal dimension parameters. The criteria for classification of fractured reservoirs by conventional logging curves are obtained and applied.
【学位授予单位】：东华理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.81

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