本文選題：單砂體　切入點：夾層　出處：《東北石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：葡北油田位于黑龍江省大慶市南部,位于大慶長垣背斜的南邊,屬于葡萄花構(gòu)造帶。葡北油田已進(jìn)入油田開發(fā)后期,單井產(chǎn)液量大但含水較高,同時注采關(guān)系比較嚴(yán)峻,層間非均質(zhì)性嚴(yán)重,這就需要我們對葡北油田儲層特征進(jìn)行重新認(rèn)識,尤其需要對單砂體進(jìn)行詳細(xì)描述,重新認(rèn)識單砂體內(nèi)部夾層發(fā)育情況。通過對單砂體及其內(nèi)部夾層的重新認(rèn)識,為油田開發(fā)后期挖潛措施的制定,注采關(guān)系的調(diào)整提供準(zhǔn)確的靜態(tài)數(shù)據(jù)支持。本次論文研究以葡北油田A區(qū)為目標(biāo)區(qū),葡I油層組為目的層,進(jìn)行單砂體精細(xì)解剖,同時運用隨機(jī)建模技術(shù)對井間夾層發(fā)育情況進(jìn)行預(yù)測。此次研究以測井資料及巖心資料為基礎(chǔ),以測井地質(zhì)學(xué)、沉積巖石學(xué)、石油地質(zhì)學(xué)、現(xiàn)代油藏地質(zhì)學(xué)、地質(zhì)統(tǒng)計學(xué)為理論依據(jù)。首先從垂向和平面上,對研究區(qū)單砂體進(jìn)行精細(xì)識別,在垂向上通過泥質(zhì)層與鈣質(zhì)層進(jìn)行識別,在平面上通過河道間沉積、砂體發(fā)育高程差、河道砂體發(fā)育厚度變化、根據(jù)測井曲線韻律性等進(jìn)行識別。再根據(jù)研究區(qū)沉積背景,結(jié)合測井資料,建立研究區(qū)測井相模式,研究單砂體剖面相與平面相特征,通過研究共識別出9種沉積微相,在此基礎(chǔ)上,對單砂體垂向疊置關(guān)系進(jìn)行研究,分為分離式、疊加式、切疊式。然后通過巖心觀測和測井識別,對單砂體內(nèi)部夾層特征進(jìn)行分析,在研究區(qū)共識別出3種類型夾層:泥質(zhì)夾層、鈣質(zhì)夾層、物性夾層。最后,結(jié)合前期所有研究成果,運用Petrel建模平臺,建立研究區(qū)構(gòu)造模型與相模型,運用序貫指示模擬算法,預(yù)測井間夾層發(fā)育情況。通過后驗井驗證及概率分布一致性檢驗,隨機(jī)模型符合率達(dá)80%以上,概率分布與原始相模型也基本保持一致。
[Abstract]:The Pubei Oilfield is located in the south of Daqing City, Heilongjiang Province, and is located in the south of Daqing anticline, belonging to the Puhua structural belt. Pubei Oilfield has entered the late stage of oilfield development, with large liquid production and high water cut per well, and the relationship between injection and production is severe. The heterogeneity between layers is serious, which requires us to re-understand the reservoir characteristics of Pubei Oilfield, especially to describe the single sand body in detail. Through the new understanding of single sand body and its inner intercalation, the measures for tapping potential in the later stage of oilfield development are formulated. The adjustment of injection-production relationship provides accurate static data support. In this paper, the fine anatomy of single sand body is carried out in the area A of Pubei Oilfield as the target area and the reservoir formation of Portugal I as the target layer. At the same time, random modeling technology is used to predict the interlayer development between wells. This study is based on logging data and core data, and is based on logging geology, sedimentary petrology, petroleum geology, modern reservoir geology, and so on. Geostatistics is the theoretical basis. First of all, the single sand body in the study area is identified from vertical and plane, then vertically through the muddy layer and calcium layer, and on the plane through the interchannel deposition. According to the sedimentary background of the study area and well logging data, the logging facies model of the studied area is established, and the characteristics of the single sand body profile and plane facies are studied. Nine kinds of sedimentary microfacies were identified. On this basis, the vertical superposition relation of single sand body was studied, which can be divided into separate type, superposition type, tangential type, and then through core observation and log recognition, The characteristics of intercalation in single sand body are analyzed, and three types of intercalations are identified in the study area: muddy intercalation, calcareous intercalation and physical intercalation. Finally, combined with all previous research results, Petrel modeling platform is used. The structural model and phase model of the studied area are established, and the interlayer development between wells is predicted by using sequential indicator simulation algorithm. The coincidence rate of random model is over 80% through the verification of a posteriori well and the consistency test of probability distribution. The probability distribution is basically consistent with the original phase model.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13

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