富林洼陷中生界复杂岩性储层参数测井评价

发布时间：2018-02-27 23:03

  本文关键词： 富林洼陷 复杂岩性 四性关系 储层参数 含水饱和度　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：富林洼陷面积约为360km2,于1967年开始了油气勘探,先后共钻井40余口,发现了包括东营组和沙河街组等含油层系。富林洼陷位于渤海湾盆地的济阳凹陷。济阳坳陷是渤海构造之一,邻近济阳坳陷的海区部分。富林洼陷经过了长期的构造运动形成了当今的构造格局。富林洼陷中生界地层由白垩系和侏罗系组成。富林洼陷中生界整体为一套沼泽相-河流相沉积。划分为五个岩性段:坊子组、三台组、蒙阴组、西洼组、王氏组,内部发育了多个不整合界面。富林洼陷中生界储层地层岩性复杂,储层评价难度大。本文依据钻井取心、岩心物性试验以及钻孔的测井资料,对富林洼陷中生界复杂岩性储层进行了四性关系分析、岩性识别以及泥质含量、孔隙度、渗透率和含水饱和度等储层参数计算,实现了对富林洼陷中生界复杂岩性储层的测井精确评价。对富林洼陷中生界复杂岩性储层的四性关系进行了分析。利用岩石物理实验对岩心进行孔隙度和渗透率的测量,将不同岩性与岩石物性进行对比分析,发现岩石的岩性和物理性质之间具有一定的相关性。研究区复杂岩性储层的含油性和物性具有正相关关系。在油层处电阻率测井值明显增大,由此证实含油性和电性的正相关关系。富林洼陷中生界复杂岩性储层岩性主要包括凝灰岩、安山岩以及砂砾岩、泥晶白云岩、泥晶灰岩及灰质泥岩等岩性。不同的火成岩岩性具有不同的测井响应特征。依据火成岩测井响应特征制定岩性识别方法,利用补偿中子识别图版和补偿密度识别图版对富林洼陷中生界进行岩性识别,得到研究区岩性识别剖面。富林洼陷中生界复杂岩性储层评价参数主要包括储层的泥质含量、孔隙度、渗透率和含水饱和度等。分别利用自然电位法计算储层泥质含量,利用中子密度法计算储层孔隙度并利用声-电组合法计算储层渗透率和利用Simandoux公式计算矫正泥质含量后的储层含水饱和度。对研究区F23、F24、F29、F115、F117等5口含油层钻孔进行储层评价。得到孔隙度平均值为16.7%,渗透率平均值为23.5mD,含水饱和度平均值为92.1%。
[Abstract]:The area of Fulin sag is about 360km2. Oil and gas exploration began in 1967, and more than 40 wells were drilled successively. The oil-bearing strata including Dongying formation and Shahejie formation were discovered. The Fulin sag is located in Jiyang sag of Bohai Bay basin, and Jiyang depression is one of Bohai Sea structures. The marine area adjacent to the Jiyang depression. The Fulin sag formed the present tectonic framework after a long period of tectonic movement. The Mesozoic strata of the Fulin sag consist of Cretaceous and Jurassic. The Mesozoic of Fulin sag is a set of marsh. Ze facies and fluvial facies. They are divided into five lithologic formations: Fangzi formation, Fangzi formation, There are many unconformable interfaces developed in Santai formation, Mengyin formation, Xiwa formation and Wangshi formation. The formation lithology of Mesozoic reservoir in Fulin sag is complicated and the reservoir evaluation is difficult. Based on the core physical property test and well logging data of boreholes, the four properties of complex lithologic reservoirs in Fulin sag are analyzed, lithologic identification and reservoir parameters such as muddy content, porosity, permeability and water saturation are calculated. The logging accurate evaluation of Mesozoic complex lithologic reservoir in Fulin sag is realized. The four properties of Mesozoic complex lithologic reservoir in Fulin sag are analyzed. The porosity and permeability of core are measured by rock physics experiment. Comparing and analyzing different lithology and petrophysical properties, It is found that there is a certain correlation between the lithology and physical properties of the rocks, and the oil and physical properties of the complex lithologic reservoirs in the study area are positively correlated. The lithology of Mesozoic complex lithologic reservoirs in Fulin sag mainly includes tuff, andesite, sandy gravel, mud-crystal dolomite, etc. Different igneous lithology has different logging response characteristics. According to the response characteristics of igneous rock logging, the lithology identification method is developed. The lithology of the Mesozoic in Fulin sag is identified by using the compensatory neutron recognition plate and the compensated density recognition chart, and the lithologic identification profile of the study area is obtained. The evaluation parameters of the complex lithologic reservoir of the Mesozoic in the Fulin sag mainly include the muddy content of the reservoir. Porosity, permeability and water saturation, etc. The natural potential method is used to calculate the shale content of the reservoir, The reservoir porosity is calculated by neutron density method, the reservoir permeability is calculated by acoustic-electric combination method, and the water saturation after correction of muddy content is calculated by Simandoux formula. The reservoir is stored in five oil-bearing formation boreholes, such as F23, F24, F29, F115, F117, etc. The average porosity, permeability and water saturation are 16.7mm, 23.5mDand 92.1mDrespectively.
【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：1544700