本文選題：紅外光譜 + 包裹體�。� 參考：《中國石油大學(xué)(華東)》2015年碩士論文

【摘要】：現(xiàn)如今裂縫性油藏在油氣藏發(fā)現(xiàn)中所占的比例逐漸增大,儲量和產(chǎn)量比例也逐漸上升,人們研究的重點(diǎn)逐漸從構(gòu)造圈閉油藏向非常規(guī)油藏傾斜,儲層裂縫不但是油藏中流體的運(yùn)移通道,同時(shí)也是油氣良好的儲集空間,因此它對于油藏產(chǎn)量的提高具有十分重要的意義,對于裂縫預(yù)測的研究已經(jīng)成為了科學(xué)分析領(lǐng)域里的熱點(diǎn)課題。對于儲層裂縫的研究很復(fù)雜,是一個(gè)系統(tǒng)工程,在單一尺度上不能更好地表述裂縫在油藏中的特性,因此,需要從多尺度的角度對裂縫進(jìn)行分析。本課題將紅外光譜成像與多尺度分析結(jié)合起來,應(yīng)用紅外光譜技術(shù)對裂縫微觀特征進(jìn)行研究,判斷碳酸鹽巖裂縫微觀特性下的有效性和形成期次,應(yīng)用測井資料和地質(zhì)信息對油藏區(qū)域進(jìn)行碳酸鹽巖裂縫預(yù)測研究,對裂縫發(fā)育程度的分布做出預(yù)測。研究結(jié)果表明:(1)該研究區(qū)域中巖心內(nèi)含有有機(jī)烴類化合物和流體包裹體,儲層裂縫主要存在于白云巖介質(zhì)中,裂縫中烷烴有機(jī)物的充填程度較小為26.014%,鹽水包裹體所占比例較大為51.691%。巖心裂縫屬于大裂縫,裂縫的有效性較好。(2)研究區(qū)潛山主要有兩個(gè)油氣裂縫形成期:一為東營組沉積晚期到明化鎮(zhèn)組沉積中期、二為始新統(tǒng)沙三段到漸新統(tǒng)沙二段沉積期。(3)通過數(shù)值模擬計(jì)算得出,該霧迷山組油藏區(qū)域地層地層中的應(yīng)力值大體分布在36~80MPa之間。區(qū)域斷層內(nèi)部應(yīng)力值較連續(xù)地層小,井點(diǎn)最大主應(yīng)力方向?yàn)楸逼珫|,角度值分布較為均勻。(4)斷層內(nèi)部、相鄰斷層過渡區(qū)域發(fā)育指數(shù)較大,為裂縫發(fā)育區(qū)域。研究區(qū)域地層西南方向發(fā)育指數(shù)大于0.8,屬于裂縫較發(fā)育區(qū)域。東北端主斷層處存在一段顏色較淺區(qū)域,該區(qū)域?qū)儆诹芽p欠發(fā)育處。剩余地區(qū)包括東南部和西北部等地均屬于裂縫輕微發(fā)育區(qū)域。斷層邊緣處等值線變化快,裂縫分布受到巖層應(yīng)力釋放的影響成區(qū)塊分布。比較裂縫發(fā)育指數(shù)等值線圖與井點(diǎn)分布圖,在斷層臨近區(qū)域和西南、東南方向等裂縫破裂較大的地區(qū),其井點(diǎn)分布較密集,其余地域井點(diǎn)分布較稀疏,對于儲層裂縫發(fā)育區(qū)域預(yù)測的研究與井點(diǎn)的分布相互吻合,證明本文研究得出的結(jié)論符合實(shí)際工程情況。
[Abstract]:Nowadays, the proportion of fractured reservoirs in the discovery of oil and gas reservoirs is gradually increasing, and the proportion of reserves and production is also gradually rising. The focus of people's studies is gradually tilting from structural traps to unconventional reservoirs. Reservoir fracture is not only the migration passage of fluid in the reservoir, but also a good reservoir space for oil and gas, so it is of great significance for the improvement of reservoir production. The research on fracture prediction has become a hot topic in the field of scientific analysis. The study of reservoir fractures is very complex and is a systematic engineering, which can not better describe the characteristics of fractures in reservoirs on a single scale. Therefore, it is necessary to analyze fractures from the perspective of multiple scales. In this paper, infrared spectral imaging and multi-scale analysis are combined to study the microscopic characteristics of fractures, and to judge the validity and formation period of carbonate fractures. Well logging data and geological information are used to predict the fracture of carbonate rock in reservoir area, and the distribution of fracture development degree is predicted. The results show that the core of the study area contains organic hydrocarbon compounds and fluid inclusions, and the reservoir fractures mainly exist in dolomite media. The filling degree of alkane organic matter in fracture is 26.014 and the proportion of brine inclusion is 51.691. The core fractures belong to large fractures, and the validity of fractures is good. (2) there are mainly two oil and gas fractures in buried hills in the study area: one is the late sedimentary period of Dongying formation to the middle sedimentary period of Minghuazhen formation, The second is the sedimentary period from the third member of the Eocene to the second member of the Sha member of the Oligocene. By numerical simulation, it is concluded that the stress values in the regional formation of the Wumishan formation are roughly distributed between 36~80MPa. The stress value of the regional fault is smaller than that of the continuous formation, the direction of the maximum principal stress of the well point is east-north, the angle value distribution is more uniform, and the development index of the adjacent fault transition region is larger, which is the fracture development area. The development index of the southwest direction of strata is greater than 0.8, which belongs to the area where the fractures are relatively developed. There is a light color area at the main fault at the northeast end, which belongs to the underdeveloped fracture. The remaining areas, including the southeast and northwest, belong to the area of slight crack development. The distribution of fractures is affected by the stress release of strata into blocks. Comparing the contour map of fracture development index with that of well point distribution, the well point distribution is denser in the area adjacent to the fault and in the southwest and southeast, and the distribution of the other well points is relatively sparse. The prediction of reservoir fracture development area coincides with the distribution of well point, which proves that the conclusion obtained in this paper is in line with the actual engineering situation.
【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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