本文關(guān)鍵詞： 富林洼陷 復(fù)雜巖性 四性關(guān)系 儲層參數(shù) 含水飽和度　出處：《東北石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：富林洼陷面積約為360km2,于1967年開始了油氣勘探,先后共鉆井40余口,發(fā)現(xiàn)了包括東營組和沙河街組等含油層系。富林洼陷位于渤海灣盆地的濟陽凹陷。濟陽坳陷是渤海構(gòu)造之一,鄰近濟陽坳陷的海區(qū)部分。富林洼陷經(jīng)過了長期的構(gòu)造運動形成了當(dāng)今的構(gòu)造格局。富林洼陷中生界地層由白堊系和侏羅系組成。富林洼陷中生界整體為一套沼澤相-河流相沉積。劃分為五個巖性段:坊子組、三臺組、蒙陰組、西洼組、王氏組,內(nèi)部發(fā)育了多個不整合界面。富林洼陷中生界儲層地層巖性復(fù)雜,儲層評價難度大。本文依據(jù)鉆井取心、巖心物性試驗以及鉆孔的測井資料,對富林洼陷中生界復(fù)雜巖性儲層進行了四性關(guān)系分析、巖性識別以及泥質(zhì)含量、孔隙度、滲透率和含水飽和度等儲層參數(shù)計算,實現(xiàn)了對富林洼陷中生界復(fù)雜巖性儲層的測井精確評價。對富林洼陷中生界復(fù)雜巖性儲層的四性關(guān)系進行了分析。利用巖石物理實驗對巖心進行孔隙度和滲透率的測量,將不同巖性與巖石物性進行對比分析,發(fā)現(xiàn)巖石的巖性和物理性質(zhì)之間具有一定的相關(guān)性。研究區(qū)復(fù)雜巖性儲層的含油性和物性具有正相關(guān)關(guān)系。在油層處電阻率測井值明顯增大,由此證實含油性和電性的正相關(guān)關(guān)系。富林洼陷中生界復(fù)雜巖性儲層巖性主要包括凝灰?guī)r、安山巖以及砂礫巖、泥晶白云巖、泥晶灰?guī)r及灰質(zhì)泥巖等巖性。不同的火成巖巖性具有不同的測井響應(yīng)特征。依據(jù)火成巖測井響應(yīng)特征制定巖性識別方法,利用補償中子識別圖版和補償密度識別圖版對富林洼陷中生界進行巖性識別,得到研究區(qū)巖性識別剖面。富林洼陷中生界復(fù)雜巖性儲層評價參數(shù)主要包括儲層的泥質(zhì)含量、孔隙度、滲透率和含水飽和度等。分別利用自然電位法計算儲層泥質(zhì)含量,利用中子密度法計算儲層孔隙度并利用聲-電組合法計算儲層滲透率和利用Simandoux公式計算矯正泥質(zhì)含量后的儲層含水飽和度。對研究區(qū)F23、F24、F29、F115、F117等5口含油層鉆孔進行儲層評價。得到孔隙度平均值為16.7%,滲透率平均值為23.5mD,含水飽和度平均值為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.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13;P631.81
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本文編號：1544700