本文選題：準噶爾盆地 + 車排子凸起�。� 參考：《中國石油大學(xué)(華東)》2015年碩士論文

【摘要】：準噶爾盆地西緣車排子地區(qū)中生界勘探程度相對較低,油氣來源及油氣成藏過程的研究較為薄弱,油氣成藏控制因素不明確。針對研究區(qū)存在的這些問題,以石油地質(zhì)學(xué)、油氣地球化學(xué)、沉積學(xué)和油氣成藏理論為指導(dǎo),利用野外露頭、巖心、測錄井、地震及分析化驗資料等,采用成藏要素數(shù)理統(tǒng)計、地球化學(xué)分析測試等技術(shù)手段和方法,重點開展儲層特征及油源分析研究,探討車排子地區(qū)中生界油氣成藏特征,查明研究區(qū)中生界油氣成藏的控制因素,建立成藏模式,明確下步勘探方向與目標(biāo)。通過鉆井取心的巖心觀察、粒度資料分析以及巖石薄片鏡下觀察等技術(shù)手段多手段、多角度對單井沉積相類型進行判別,系統(tǒng)厘定了沉積相帶類型,建立了沉積相模式。利用分布函數(shù)曲線法對準西地區(qū)侏羅、白堊系有效儲層物性下限進行了明確。白堊系儲層埋深1000米以內(nèi),有效儲層物性下限為14.3%,侏羅系為13.8%。儲層巖性主要為長石巖屑砂巖和巖屑長石砂巖,儲集空間類型主要為裂縫與溶蝕孔隙,綜合評價為中孔中滲儲層。油源對比確定車排子凸起東翼地區(qū)原油來自沙灣凹陷中二疊統(tǒng)下烏爾禾組湖相烴源巖,凸起中段原油屬二疊系與侏羅系原油混合貢獻區(qū),凸起西翼原油來源于四棵樹凹陷下侏羅統(tǒng)八道灣組湖相烴源巖。在成藏過程研究的基礎(chǔ)上,根據(jù)油氣富集特點,認為車排子地區(qū)中生界油氣成藏主要受兩個方面的控制:斷毯的輸導(dǎo)效能和儲層砂體的儲集性。斷層、毯砂控制油氣分布層位,砂體儲集性控制含油氣好壞。車排子凸起中生界油氣成藏具有雙源供烴,兩期充注(J2—K、E-N)、浮力驅(qū)動、斷層-毯砂輸導(dǎo)為主、毯緣聚集成藏的特征,在成藏過程中,斷層-砂體構(gòu)成的輸導(dǎo)體系起到至關(guān)重要的作用,控制油氣的成藏及分布,砂體儲集性控制油氣的富集。以輸導(dǎo)體系為核心,建立了準西車排子地區(qū)中生界遠源供烴,斷層-毯砂輸導(dǎo)、砂體儲集性主控成藏與富集油氣成藏模式。
[Abstract]:The exploration degree of Mesozoic in the area of the west edge of the Junggar basin is relatively low, the source of oil and gas and the process of hydrocarbon accumulation are relatively weak, and the controlling factors for hydrocarbon accumulation are not clear. By measuring logging, seismic and analysis, using mathematical statistics, geochemical analysis and testing, the reservoir characteristics and oil source analysis are carried out. The reservoir characteristics of the Mesozoic oil and gas accumulation in the area of the PAI Zi area are discussed, and the control factors of the hydrocarbon accumulation in the Mesozoic in the study area are found out, and the reservoir forming model is established. Through the core observation of the drilling coring, the analysis of grain size data and the observation of the thin film under the microscope, the types of the single well sedimentary facies are judged by the multi angle. The sedimentary facies type is determined by the system, and the pattern of sedimentary facies is established. The method of distribution curve is used to aim at the Jurassic in the west area and the Cretaceous system. The lower limit of physical property of the reservoir is clear. The Cretaceous reservoir depth is less than 1000 meters, and the lower limit of the effective reservoir is 14.3%. The Jurassic 13.8%. reservoir lithology is mainly feldspar lithic sandstone and lithic feldspar sandstone. The reservoir space type is mainly fractured and dissolved pores, comprehensive evaluation is medium porosity and permeability reservoir. Oil source comparison determines car platoon convex. The crude oil from the east wing area is derived from the lake facies source rock in the lower two strata of the lower middle strata of the Shawan sag, the middle section of the crude oil belongs to the mixed contribution area of the Permian and Jurassic crude oil, and the West Wing crude oil comes from the lake facies source rocks of the lower Jurassic eight Dao Wan formation in the four tree sag. The Mesozoic hydrocarbon accumulation in the subregion is mainly controlled by two aspects: the transmission efficiency of the broken blanket and the reservoir of the reservoir. The fault, the blanket sand controls the oil and gas distribution, the sand body is used to control the oil and gas. The Mesozoic oil and gas accumulation in the car platoon convex has two sources of hydrocarbon supply, the two phases of filling (J2 - K, E-N), buoyancy drive and fault blanket sand transport In the process of reservoir formation, the fault sand body transport system plays a vital role in controlling the accumulation and distribution of oil and gas, and the accumulation of sand body controls the accumulation of oil and gas in the process of reservoir formation. The reservoir and accumulation model of oil and gas accumulation are controlled.

【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13

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