發(fā)布時間：2018-08-08 10:48

【摘要】：剩余油分布研究是一項世界性難題,也是地質(zhì)、地球物理和油藏工程等不同學(xué)科領(lǐng)域的前沿性課題。QHD32-6油田位于渤海中部海域,油田構(gòu)造為大型披覆構(gòu)造,儲層為復(fù)雜河流相沉積,油藏埋深淺,油質(zhì)稠。北區(qū)油藏受構(gòu)造、斷層、邊(底)水和巖性綜合控制,油水關(guān)系復(fù)雜,基本沒有無水采油期。本文針對QHD32-6油田北區(qū)的開發(fā)特點,分析了目標區(qū)塊的含水上升規(guī)律和產(chǎn)量遞減規(guī)律等開發(fā)動態(tài)。運用油藏工程方法,從水驅(qū)采收率、水驅(qū)控制程度、存水率、水驅(qū)指數(shù)和體積波及系數(shù)等指標對研究區(qū)水驅(qū)開發(fā)效果進行了系統(tǒng)評價。數(shù)值模擬研究中,針對本區(qū)塊油藏特點,運用Eclipse數(shù)值模擬軟件建立了符合油藏實際的數(shù)值模擬模型。根據(jù)生產(chǎn)歷史,對全區(qū)地質(zhì)儲量、產(chǎn)油量、產(chǎn)水量和含水率等各項開發(fā)指標進行了歷史擬合,擬合程度基本符合技術(shù)要求。通過對各項開發(fā)指標的綜合分析可知,QHD32-6油田北區(qū)剩余油主要分布在砂體邊部、井間滯留區(qū)、井網(wǎng)不完善區(qū)、斷層附近和構(gòu)造高點等地區(qū)。最后,根據(jù)該區(qū)塊剩余油分布特征,提出了合理的挖潛調(diào)整措施,并運用Eclipse軟件模擬預(yù)測了一些調(diào)整方案,通過綜合對比分析,優(yōu)選出最佳調(diào)整方案。這為QHD32-6油田北區(qū)的高效開發(fā)以及在開發(fā)中后期如何提高最終采收率方面積累了寶貴的經(jīng)驗。
[Abstract]:The study of residual oil distribution is a worldwide problem, and it is also a leading subject in different disciplines such as geology, geophysics and reservoir engineering. The QHD 32-6 oil field is located in the middle of the Bohai Sea, and the oilfield structure is a large overburden structure. Reservoir is complicated fluvial facies deposit, reservoir buried shallow, oil thick. The reservoir in the north region is controlled by structure, fault, edge (bottom) water and lithology. The oil-water relationship is complex, and there is basically no water-free oil recovery period. In this paper, according to the development characteristics of North QHD32-6 oilfield, the water cut rising law and production decline law of target block are analyzed. By using reservoir engineering method, the water drive development effect in the study area is systematically evaluated from water drive recovery factor, water drive control degree, water storage rate, water drive index and volume sweep coefficient. In the research of numerical simulation, according to the characteristics of reservoir in this block, a numerical simulation model is established by using Eclipse software. According to the production history, the development indexes such as geological reserves, oil production, water production and water cut in the whole area are fitted in history, and the fitting degree is basically in line with the technical requirements. Based on the comprehensive analysis of various development indexes, it can be seen that the remaining oil in the northern part of QHD 32-6 oilfield is mainly distributed in the side of sand body, the interwell retention area, the imperfect well pattern area, the area near the fault and the high point of the structure, and so on. Finally, according to the distribution characteristics of remaining oil in the block, reasonable adjustment measures are put forward, and some adjustment schemes are simulated and forecasted by Eclipse software. Through comprehensive comparison and analysis, the best adjustment scheme is selected. This has accumulated valuable experience for the high efficiency development of North QHD32-6 oilfield and how to improve the final recovery in the middle and late stage of development.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE327

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