本文關(guān)鍵詞： 大牛地氣田 山西組 巖相 沉積相 沉積模式　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】：鄂爾多斯盆地大牛地氣田位于鄂爾多斯盆地東北部塔巴廟地區(qū),構(gòu)造部位處于伊陜斜坡上,構(gòu)造平緩,斷層不發(fā)育,屬非均質(zhì)性強的致密砂巖氣藏。本論文以現(xiàn)代沉積學(xué)、巖相古地理理論為指導(dǎo),充分利用鉆井巖芯、測井資料,以鄂爾多斯盆地大牛地氣田山西組為研究對象,通過單井地層劃分,將山西組劃分為山1段、山2段兩個段,自下而上進一步劃分為:山1-1、山1-2、山1-3、山2-1、山2-2、山2-3六個小層。在巖相識別圖版建立基礎(chǔ)上,系統(tǒng)研究了山1-1、山1-2、山1-3、山2-1、山2-2、山2-3六個小層的巖相平面分布。通過鉆井巖心觀察及測井資料分析,建立了山西組巖石顏色、巖性、沉積構(gòu)造、生物標志、粒度概率曲線、測井相剖面結(jié)構(gòu)等7類沉積微相識別標志。在上述沉積微相識別標志研究基礎(chǔ)上,將大牛地氣田山西組劃分為三角洲平原亞相,可進一步識別出分流河道、洼地、天然堤、決口扇、泥炭沼澤微相,并系統(tǒng)研究了各類沉積微相特征。在單井沉積微相特征及鉆井間沉積微相對比研究基礎(chǔ)上,系統(tǒng)編制了大牛地氣田山西組各小層沉積微相平面分布圖。研究了其平面分布及垂向演化特征,最終建立了山西組沉積期發(fā)育的沉積模式。
[Abstract]:Daniudi gas field in Ordos basin is located in Tabamiao area, northeast of Ordos basin, and its structural position is located on the Yishan slope. The structure is flat, fault is not developed, and it is a dense sandstone gas reservoir with strong heterogeneity. Guided by the theory of lithofacies and paleogeography, taking Shanxi formation of Daniudi gas field in Ordos Basin as the research object, Shanxi formation is divided into two sections, namely, Shan 1 and Shan 2, according to the theory of lithofacies and paleogeography. It is further divided into six sublayers: mountain 1-1, mountain 1-2, mountain 1-3, mountain 2-1, mountain 2-2, mountain 2-3. The lithofacies plane distribution of Shan 1-1, Shan 1-2, Shan 1-3, Shan 2-1, Shan 2-2 and Shan 2-3 are systematically studied. The color, lithology, sedimentary structure, biomarker and granularity probability curves of Shanxi formation are established by drilling core observation and logging data analysis. On the basis of the study of the above sedimentary microfacies identification markers, Shanxi formation of Daniudi gas field is divided into delta plain subfacies, which can further identify distributary channels, depressions, natural dikes, etc. The crevasse fan, peat marsh microfacies, and various sedimentary microfacies are systematically studied. On the basis of the comparative study of sedimentary microfacies in single well and in drilling, The sedimentary microfacies plane distribution maps of Shanxi formation in Daniudi gas field are compiled systematically. The plane distribution and vertical evolution characteristics of the sedimentary microfacies are studied. Finally, the sedimentary model of the sedimentary period of Shanxi formation is established.
【學(xué)位授予單位】：成都理工大學(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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