本文選題：梁11斷塊 + 單砂體��； 參考：《中國(guó)石油大學(xué)(華東)》2015年碩士論文

【摘要】：史南油田梁11斷塊為一構(gòu)造-巖性油氣藏。本次研究目的層段為沙二段7、8層系,屬于三角洲前緣亞相沉積,為工區(qū)主要產(chǎn)油層。目前,油藏整體已經(jīng)進(jìn)入特高含水期,通過(guò)分析油藏動(dòng)靜態(tài)數(shù)據(jù)發(fā)現(xiàn),研究區(qū)存在層間差異大、采出程度不均衡、單井產(chǎn)能低、采油速度低、水淹情況嚴(yán)重、停產(chǎn)停注井多、停井時(shí)間長(zhǎng)、注采對(duì)應(yīng)率低以及注采系統(tǒng)極不完善等問(wèn)題,嚴(yán)重影響了開(kāi)發(fā)生產(chǎn)。本論文在地層及儲(chǔ)層的精細(xì)劃分與對(duì)比、三角洲前緣亞相沉積特征系統(tǒng)研究的基礎(chǔ)上,重點(diǎn)分析等時(shí)格架控制下的三角洲前緣沉積體系中單砂體的空間展布特征,建立基于單砂體的精細(xì)儲(chǔ)層地質(zhì)模型,為油藏?cái)?shù)值模擬提供可靠的靜態(tài)模型,為工區(qū)剩余油的進(jìn)一步挖潛提供切實(shí)可靠的依據(jù)。以鉆井巖心資料為基礎(chǔ),在單砂體內(nèi)部識(shí)別出泥質(zhì)夾層、物性?shī)A層、鈣質(zhì)夾層3種成因分界面,并建立其對(duì)應(yīng)的測(cè)井響應(yīng)模板;總結(jié)出研究區(qū)發(fā)育7種單砂體疊置模式,并對(duì)單砂體以及隔夾層的剖面和平面特征進(jìn)行精細(xì)分析;根據(jù)隔夾層的展布范圍及鉆遇率,將其劃分為穩(wěn)定型、次穩(wěn)定型和隨機(jī)發(fā)育型三種類(lèi)型。在以上精細(xì)地質(zhì)研究的基礎(chǔ)上,建立基于單砂體的儲(chǔ)層地質(zhì)模型,表征儲(chǔ)層成因單砂體的展布特征。利用精細(xì)構(gòu)造解釋以及井震結(jié)合繪制的構(gòu)造圖做約束建立精確的構(gòu)造格架模型,在此基礎(chǔ)上,根據(jù) 三重套嵌、隔夾層分類(lèi)建�！椒�,建立砂體模型和隔夾層模型;由于研究區(qū)井網(wǎng)密度大并且已經(jīng)具有精細(xì)的地質(zhì)認(rèn)識(shí),利用確定建模的方法建立單砂體模型;根據(jù)單砂體控制的原則,對(duì)孔隙度參數(shù)進(jìn)行序貫高斯模擬,并以孔隙度模型作為第二變量約束,對(duì)滲透率參數(shù)進(jìn)行序貫高斯同位協(xié)同模擬。最后對(duì)模型進(jìn)行了地質(zhì)模型與概念模型對(duì)比檢驗(yàn)、概率分布一致性檢驗(yàn)和油藏?cái)?shù)值模擬檢驗(yàn),結(jié)果均表明所建立的地質(zhì)模型具有較高的精度。
[Abstract]:Liang11 fault block in Shinan Oilfield is a structural-lithologic reservoir. The target formation of this study is the 7J / 8 series of the second member of Sha, which belongs to the delta front subfacies and is the main oil producing layer in the working area. At present, the whole reservoir has entered an extra high water cut period. By analyzing the dynamic and static data of the reservoir, it is found that there are great differences between layers, uneven production degree, low productivity of single well, low oil recovery rate, serious water flooding, and many wells stopping production and injection in the study area. The problems of long stopping time, low corresponding rate of injection and production and imperfection of injection-production system have seriously affected the development and production. Based on the fine division and correlation of strata and reservoirs and the study of delta front subfacies sedimentary system, the spatial distribution characteristics of single sand body in delta front sedimentary system controlled by isochronous frame are analyzed in this paper. A fine reservoir geological model based on single sand body is established to provide a reliable static model for reservoir numerical simulation and a practical and reliable basis for further tapping the potential of remaining oil in the working area. Based on drilling core data, three genetic interfaces of muddy intercalation, physical intercalation and calcareous intercalation are identified in the body of single sand, and their corresponding log response templates are established. The profile and plane characteristics of single sand body and intercalation are analyzed in detail. According to the distribution range and drilling rate of the barrier intercalation, it can be divided into three types: stable type, substable type and random developing type. On the basis of the fine geological research above, the reservoir geological model based on single sand body is established to characterize the distribution characteristics of single sand body of reservoir genesis. The precise structural framework model is established by using fine structural interpretation and well shock combined with the structural map drawn as constraints. On this basis, sand body model and intercalation model are established according to the classification modeling method of triple-sleeve and intercalation. Because of the high density of well pattern and the fine geological knowledge in the study area, the single sand body model is established by using the method of deterministic modeling, and the porosity parameters are simulated by sequential Gao Si according to the principle of single sand body control. With porosity model as the second variable constraint, sequential Gao Si co-simulation of permeability parameters is carried out. Finally, the geological model is compared with the conceptual model, the probability distribution consistency test and the reservoir numerical simulation test are carried out. The results show that the geological model has a high accuracy.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：P618.13

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