【摘要】：塔里木盆地臺盆區(qū)碳酸鹽巖儲層油氣成藏條件十分優(yōu)越,但由于地層成巖過程極為復(fù)雜,使得臺盆區(qū)儲層巖石礦物組成及巖性具有復(fù)雜和多樣的特點,且儲層埋藏深、類型多樣、變化大,導(dǎo)致儲層油氣藏類型多樣且比常規(guī)均質(zhì)儲層有更為復(fù)雜的空隙空間結(jié)構(gòu)與極強(qiáng)的各向異性,使得油氣勘探開發(fā)中面臨許多難題。本文正是基于以上塔里木盆地臺盆區(qū)碳酸鹽巖儲層的特點,通過理論結(jié)合實際測井資料,建立了一套相對完善、有效、實用的儲層測井參數(shù)計算模型,并通過研究工區(qū)測井資料,開展儲層含流體性質(zhì)識別研究。 碳酸鹽巖儲層一般具有儲集空間結(jié)構(gòu)很復(fù)雜、儲集體非均質(zhì)性強(qiáng)的特征,由此致使儲層類型的判別及儲層相關(guān)參數(shù)計算就顯得很困難了。通過大量巖心觀察、薄片鑒定、物性分析、毛管壓力分析等資料,系統(tǒng)認(rèn)識了塔里木臺盆區(qū)碳酸鹽巖儲層主要的巖石學(xué)特征及儲層特征。綜合錄井、測井、巖心觀察及分析結(jié)果,將儲層分為孔洞型、裂縫-孔洞型、裂縫型,并分析了這三種不同類型儲層的測井響應(yīng)特征。在巖心、薄片資料研究的前提下,匹配主成分巖性分析法、模糊聚類識別法、地層礦物優(yōu)選模型,建立了適合臺盆區(qū)碳酸鹽巖地層巖性定性定量判別的方法。 在計算儲層參數(shù)之前,進(jìn)行測井?dāng)?shù)據(jù)標(biāo)準(zhǔn)化以及巖心歸位,盡量排除非地質(zhì)因素及人為因素的影響,以確保測井?dāng)?shù)據(jù)能夠反映地層的真實情況,并構(gòu)造出符合臺盆區(qū)研究組段的測井參數(shù)計算模型,基于碳酸鹽巖取芯分析資料和測試資料,較為準(zhǔn)確的計算了礦物含量、孔隙度、滲透率、含水飽和度,采用多種方法確定儲層有效厚度下限參數(shù),并利用實測資料驗證計算模型的有效性。本文在分析工區(qū)測井?dāng)?shù)據(jù)、地質(zhì)錄井、巖心、實驗化驗分析和試油等資料的基礎(chǔ)上,重點開展了各類型儲層測井參數(shù)定量評價和儲層流體性質(zhì)識別的研究,并應(yīng)用上述研究成果對塔北地區(qū)老井鉆探失利原因進(jìn)行分析。
[Abstract]:The oil and gas accumulation conditions of carbonate reservoir in Tai-basin area of Tarim Basin are very superior, but the formation diagenesis process is extremely complex, which makes the rock mineral composition and lithology of Tai-basin reservoir have complex and diverse characteristics, and the reservoir is buried deeply. Because of the diversity of types and great changes, the types of reservoir oil and gas reservoirs are diverse and have more complex void space structure and strong anisotropy than those of conventional homogeneous reservoirs, which makes the exploration and development of oil and gas face many difficulties. Based on the characteristics of carbonate reservoir in the Tai-basin area of Tarim Basin, a set of relatively perfect, effective and practical calculation model of reservoir logging parameters is established by combining theoretical and practical logging data. By studying the logging data of the working area, the identification of the fluid-bearing properties of the reservoir is carried out. Carbonate reservoirs are generally characterized by complex reservoir space structure and strong reservoir heterogeneity, which makes it difficult to distinguish reservoir types and calculate reservoir parameters. The main petrological characteristics and reservoir characteristics of carbonate reservoirs in the Tarim platform basin are systematically recognized through a large number of core observations, sheet identification, physical properties analysis, capillary pressure analysis and so on. According to the results of logging, core observation and analysis, the reservoir is divided into three types: pore type, fracture-hole type and fracture type. The logging response characteristics of these three different types of reservoirs are analyzed. On the premise of studying core and thin slice data, matching principal component lithology analysis method, fuzzy cluster identification method and stratigraphic mineral optimal selection model, a method for quantitative discrimination of carbonate strata lithology in Taipan area is established. Before calculating reservoir parameters, log data standardization and core return should be carried out to eliminate the influence of non-geological factors and human factors as far as possible, so as to ensure that logging data can reflect the real situation of formation. Based on the core analysis data and test data of carbonate rock, the mineral content, porosity, permeability and water saturation are calculated accurately. Several methods are used to determine the lower limit parameters of reservoir effective thickness, and the validity of the calculation model is verified by the measured data. Based on the analysis of logging data, geological logging, core, laboratory analysis and oil test, the paper focuses on the quantitative evaluation of logging parameters and the identification of reservoir fluid properties in various types of reservoirs. The above research results are applied to analyze the reasons for the failure of drilling in the old wells in northern Tarim Basin.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13

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