鄂爾多斯盆地延長(zhǎng)組長(zhǎng)6粘土礦物分析
本文選題:鄂爾多斯盆地 + 粘土礦物; 參考:《東北石油大學(xué)》2017年碩士論文
【摘要】:論文的研究基于大量的巖心樣品、測(cè)井錄井資料的分析;同時(shí)采用了普通薄片、鑄體薄片、電子顯微鏡、X-衍射、恒速壓汞實(shí)驗(yàn)、物性測(cè)量實(shí)驗(yàn)、敏感性實(shí)驗(yàn)(水敏、速敏、酸敏、堿敏)、相滲實(shí)驗(yàn)和水驅(qū)油實(shí)驗(yàn)?偨Y(jié)分析了粘土礦物同儲(chǔ)層各種特性之間的關(guān)系,其研究成果對(duì)油田開發(fā)和開采過程具有很好的指導(dǎo)作用。為了從整體上對(duì)儲(chǔ)層粘土礦物的特征進(jìn)行掌握,首先通過巖心觀察描述、測(cè)井解釋等對(duì)研究區(qū)域的沉積背景、物源體系、沉積相類型等基礎(chǔ)性特征進(jìn)行了研究。隨后,在沉積學(xué)的研究的基礎(chǔ)之上,通過鏡下鑒定、壓汞實(shí)驗(yàn)等手段對(duì)儲(chǔ)層巖石學(xué)、物性及孔隙類型等特征進(jìn)行了分析。在對(duì)儲(chǔ)層特征有了整體掌握之后,運(yùn)用掃描電鏡、X-衍射及各種滲流實(shí)驗(yàn),逐步開展對(duì)粘土礦物的研究。首先是粘土礦物自身特征,分為宏觀與微觀兩部分。宏觀上探究不同種類粘土礦物的組合關(guān)系,其相對(duì)含量變化趨勢(shì),以及在平面上不同種類粘土礦物的絕對(duì)含量展布特征。在微觀上分析粘土礦物的產(chǎn)狀、晶體形狀、與礦物顆粒關(guān)系等賦存狀態(tài),探討其與沉積、成巖作用等相關(guān)的成因機(jī)制。其次是粘土礦物對(duì)儲(chǔ)層的影響。這種影響分為粘土礦物自身形成對(duì)儲(chǔ)層物性、孔隙結(jié)構(gòu)的影響以及開發(fā)過程中同孔隙流體反應(yīng)對(duì)儲(chǔ)層產(chǎn)能造成的破壞兩方面。文中通過對(duì)不同樣品測(cè)量的孔滲數(shù)據(jù)、壓汞實(shí)驗(yàn)中的部分?jǐn)?shù)據(jù),和X-衍射得出的粘土礦物含量數(shù)據(jù)進(jìn)行交匯比對(duì)分析,分析不同種類的粘土礦物對(duì)儲(chǔ)層物性與孔隙結(jié)構(gòu)的影響與控制作用。根據(jù)壓汞實(shí)驗(yàn)討論粘土礦物對(duì)儲(chǔ)層整體容納能力的影響、并且運(yùn)用樣品測(cè)試得到的敏感性指數(shù)、相滲數(shù)據(jù)與水驅(qū)油實(shí)驗(yàn)數(shù)據(jù),比對(duì)粘土礦物含量,研究不同粘土礦物對(duì)儲(chǔ)層產(chǎn)能造成的影響。
[Abstract]:The research of this paper is based on a large number of core samples, the analysis of logging data, the use of ordinary slice, casting thin slice, electron microscope X-diffraction, constant speed mercury injection experiment, physical property measurement experiment, sensitivity experiment (water sensitivity, speed sensitivity), Acid-sensitive, alkali-sensitive, phase permeation and water flooding experiments. The relationship between clay minerals and reservoir characteristics is summarized and analyzed. In order to master the characteristics of clay minerals in reservoir, the basic characteristics of sedimentary background, provenance system and sedimentary facies are studied by core observation and log interpretation. Then, on the basis of sedimentology, the petrology, physical properties and pore types of reservoirs are analyzed by means of microscopic identification and mercury injection experiment. After the reservoir characteristics have been mastered, the study of clay minerals has been carried out step by means of scanning electron microscope (SEM) X-ray diffraction and various percolation experiments. First of all, clay minerals have their own characteristics, which are divided into two parts: macro and micro. Macroscopically, the combination relationship of different kinds of clay minerals, its relative content change trend, and the distribution characteristics of absolute content of different kinds of clay minerals on the plane are studied. The occurrence states of clay minerals, such as occurrence, crystal shape, and relationship with mineral particles, are analyzed microscopically, and the genetic mechanisms related to sedimentation and diagenesis are discussed. The second is the influence of clay minerals on reservoir. This influence can be divided into two aspects: the formation of clay minerals themselves, the influence of pore structure and the destruction of reservoir productivity caused by the same pore fluid reaction during the development process. In this paper, the porosity and permeability data measured by different samples, some data in mercury injection experiment and the clay mineral content data obtained by X- diffraction are compared and analyzed. The influence and control of different kinds of clay minerals on reservoir physical properties and pore structure are analyzed. According to the mercury injection experiment, the influence of clay minerals on the overall capacity of reservoir is discussed, and the sensitivity index, the permeability data and the experimental data of water flooding are used to compare the clay mineral content. The effect of different clay minerals on reservoir productivity is studied.
【學(xué)位授予單位】:東北石油大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TE31;P618.13
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