本文選題：龍馬溪組頁巖 + 儲層評價　； 參考：《西南石油大學》2015年碩士論文

【摘要】：頁巖氣的游離態(tài)與吸附態(tài)并存的賦存特征,“連續(xù)成藏”的聚集模式,區(qū)別于常規(guī)天然氣儲層的特征等決定了頁巖氣儲層研究的特殊性。研究、認識頁巖氣層的巖石物理特征,探索科學的儲層參數(shù)計算模型,是實現(xiàn)頁巖氣層高效評價的核心與關(guān)鍵,對頁巖氣儲層“甜點”的預(yù)測、優(yōu)選及頁巖氣資源的高效、規(guī)�；_發(fā)具有重要意義。 本文在調(diào)研國內(nèi)外已有研究成果的基礎(chǔ)上,以川東南龍馬溪組頁巖為研究載體,理論分析與實驗研究相結(jié)合,系統(tǒng)研究了頁巖氣層的聲電放射性巖石物理參數(shù)特征及其與頁巖礦物組分、有機碳含量(TOC)的關(guān)系,并探索了基于自然伽馬能譜、聲波時差電阻率的礦物組分和有機碳含量的計算評價模型。取得的主要成果及認識如下： (1)龍馬溪組頁巖以石英為主,其次是黏土礦物。黏土礦物則以伊利石為主,其次為綠泥石、伊/蒙混層。 (2)相對于平行于層理方向,垂直于層理方向的聲波時差與石英含量、黏土礦物含量的相關(guān)性較好；聲波時差與石英的相關(guān)性較黏土礦物好；隨著頻率的增大,聲波時差與石英含量、黏土礦物含量的相關(guān)性變好。 (3)無論平行于層理還是垂直于層理,巖樣的電阻率與石英含量、黏土礦物含量之間存在一定的相關(guān)性；相對于垂直于層理方向,平行于層理方向的電阻率與石英含量、黏土礦物含量的相關(guān)性較好；電阻率與石英的相關(guān)性較黏土礦物好。 (4)石英含量與鈾、鈾/鉀的相關(guān)性較強,且呈負相關(guān)；與釷、鉀、釷/鉀有一定的負相關(guān)性。黏土含量與鈾、釷、鉀的相關(guān)性較強,且呈正相關(guān)；與鈾/鉀、釷/鉀有一定的正相關(guān)性。 (5)TOC與Th、K、U/Th, U/K的相關(guān)性相對較好,且與Th、K呈負相關(guān),與U/Th. U/K正相關(guān)。 (6)無論是平行于層理還是垂直于層理,TOC與電阻率的相關(guān)性較好,且呈負相關(guān)。 (7)綜合聲波時差、電阻率、自然伽馬等指標,通過多元線性回歸建立了龍馬溪組頁巖石英含量、黏土含量與TOC的計算模型。
[Abstract]:The particularity of shale gas reservoir research is determined by the coexistence of free state and adsorption state of shale gas, the accumulation pattern of "continuous reservoir formation" and the characteristics of shale gas reservoir, which are different from conventional natural gas reservoirs. It is the core and key to realize the high efficiency evaluation of shale gas reservoir to recognize the petrophysical characteristics of shale gas reservoir and to explore the scientific model of reservoir parameter calculation. The prediction, optimal selection and high efficiency of shale gas resource of shale gas reservoir are also discussed. Scale development is of great significance. In this paper, based on the existing research results at home and abroad, the shale of Longmaxi formation in southeast Sichuan is taken as the research carrier, and the theoretical analysis and experimental study are combined. The physical parameters of acoustoelectric radioactivity rock in shale gas reservoir and its relationship with shale mineral composition and organic carbon content are systematically studied, and based on the natural gamma spectrum, the relationship between rock physical parameters and organic carbon content in shale gas reservoir is systematically studied. Calculation and evaluation model of mineral composition and organic carbon content of acoustic time difference resistivity. The main achievements and understandings are as follows: The shale of Longmaxi formation is mainly quartz, followed by clay minerals. The clay minerals are mainly Illite, followed by chlorite and / or mixed layer. (2) the correlation between acoustic time difference perpendicular to stratification direction and quartz content is better than that of clay mineral content, and the correlation between acoustic time difference and quartz is better than that of clay mineral, and with the increase of frequency, the correlation between acoustic time difference and quartz is better than that of clay mineral. The correlation between acoustic moveout and quartz content and clay content is improved. Whether parallel to or perpendicular to the bedding, there is a certain correlation between the resistivity of rock samples and the content of quartz and clay, and the resistivity parallel to the direction of stratification and the content of quartz relative to the vertical direction of bedding. The correlation between resistivity and quartz is better than that of clay mineral. (4) the content of quartz has a strong correlation with uranium and uranium / potassium, and a negative correlation with thorium, potassium and thorium / potassium. The clay content was positively correlated with uranium, thorium and potassium, and positively correlated with uranium / potassium and thorium / potassium. The correlation between TOC and Thu / T / T, U / K is relatively good, and there is a negative correlation between TOC and Thu / T, but also with U / T. U / K is positively correlated. (6) the correlation between TOC and resistivity is good, and it is negative correlation between TOC and resistivity, whether parallel to bedding or perpendicular to bedding. The calculation model of shale quartz content, clay content and TOC of Longmaxi formation is established by multivariate linear regression.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.13

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