發(fā)布時(shí)間：2018-02-25 21:00

  本文關(guān)鍵詞： 礦物成分 孔隙結(jié)構(gòu) 有機(jī)質(zhì) 黃鐵礦 電阻率 極化率　出處：《成都理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：基于頁(yè)巖電磁屬性、頁(yè)巖氣儲(chǔ)層預(yù)測(cè)與監(jiān)測(cè)的方法研究是具有挑戰(zhàn)性的前沿科學(xué)問(wèn)題。針對(duì)頁(yè)巖氣的物理性質(zhì)和電化學(xué)特征的測(cè)試需要,本文通過(guò)阻抗相位分析儀對(duì)部分頁(yè)巖巖樣進(jìn)行了復(fù)電阻率測(cè)量,獲取了電阻率和極化率的觀測(cè)數(shù)據(jù);結(jié)合掃描電鏡、X-衍射、鑄體薄片鑒定、TOC測(cè)定以及N2、CO2吸附和壓汞法等微觀分析和地球化學(xué)分析方法,對(duì)四川盆地南部志留系龍馬溪組頁(yè)巖地層的巖石物性、電性特征展開(kāi)綜合研究,重點(diǎn)分析富有機(jī)質(zhì)頁(yè)巖儲(chǔ)層礦物成分、TOC含量、微觀孔隙結(jié)構(gòu)等特征,研究和探討其電性特征等熱點(diǎn)問(wèn)題。論文首先通過(guò)收集四川盆地南部地區(qū)相關(guān)地質(zhì)、地球物理資料以及測(cè)井?dāng)?shù)據(jù)等,對(duì)研究區(qū)內(nèi)的龍馬溪組頁(yè)巖出露進(jìn)行定位,選取合理區(qū)塊現(xiàn)場(chǎng)采集樣品,再經(jīng)過(guò)進(jìn)一步分析確認(rèn),選取其中具有代表性的巖樣,進(jìn)行巖石電性和電化學(xué)性質(zhì)測(cè)試,并同步進(jìn)行鑒定有機(jī)碳含量的微觀測(cè)定。其次,通過(guò)對(duì)掃描電鏡、X-衍射、鑄體薄片鑒定,分析頁(yè)巖層的微觀礦物成分、微觀結(jié)構(gòu)(顆粒大小、分布、排列等)特征;并通過(guò)TOC含量、有機(jī)質(zhì)成熟度測(cè)定,分析頁(yè)巖層的生烴潛力;通過(guò)N2、CO2吸附和壓汞法對(duì)頁(yè)巖層的微觀孔隙結(jié)構(gòu)、孔隙大小、吸附能力等分析研究。最后,根據(jù)阻抗相位分析儀的部分巖樣的復(fù)電阻率測(cè)量結(jié)果,分析頁(yè)巖層的電阻率值,對(duì)應(yīng)其與礦物成份(粘土礦物、黃鐵礦)、TOC含量、微觀孔隙結(jié)構(gòu)的關(guān)系,研究其影響頁(yè)巖電阻率的因素,并提出了有實(shí)用價(jià)值的成果。論文最后嘗試性探討了有機(jī)質(zhì)(TOC)與黃鐵礦之間的關(guān)系,并得到了初步認(rèn)識(shí)。
[Abstract]:Based on the electromagnetic properties of shale, the method of prediction and monitoring of shale gas reservoir is a challenging frontier scientific problem. In this paper, the complex resistivity of some shale samples was measured by impedance phase analyzer, and the observation data of resistivity and polarizability were obtained. By means of microcosmic and geochemical analysis, such as TOC determination of cast thin section, absorption of N _ 2N _ 2 CO _ 2 and mercury injection method, the petrophysical and electrical properties of Shale formation of Silurian Longmaxi formation in southern Sichuan Basin are studied synthetically. This paper focuses on the analysis of TOC content and micropore structure of organic shale reservoir, and studies and discusses the electrical characteristics of the reservoir. Firstly, the paper collects the related geology in the southern Sichuan Basin. Geophysical data and logging data are used to locate the shale outburst of Longmaxi formation in the study area, and the samples are collected in a reasonable block. After further analysis and confirmation, the representative rock samples are selected. The electrical and electrochemical properties of rock were tested, and the content of organic carbon was determined simultaneously. Secondly, the microscopic mineral composition and microstructure of shale layer were analyzed by scanning electron microscope (SEM) X-ray diffraction and casting sheet identification. Distribution, arrangement, etc.) characteristics; and through the determination of TOC content, maturity of organic matter, analysis of hydrocarbon generation potential of shale, through N _ 2 CO _ 2 adsorption and mercury injection method to analyze the microscopic pore structure, pore size, adsorption capacity, etc. Finally, Based on the results of complex resistivity measurements of some rock samples by the impedance phase analyzer, the resistivity values of shale layers are analyzed, corresponding to the relationship between the resistivity values and mineral composition (clay minerals, pyrite TOC content, micropore structure). The influence factors of shale resistivity are studied, and the practical results are presented. Finally, the relationship between organic matter (TOC) and pyrite is probed into, and a preliminary understanding is obtained.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13;P631.3

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本文編號(hào)：1535120