本文選題：孤島油田 + Ng3-Ng4�。� 參考：《中國(guó)石油大學(xué)(華東)》2015年碩士論文

【摘要】：孤島油田渤21斷塊經(jīng)過(guò)了近半個(gè)世紀(jì)的開(kāi)發(fā),勘探初期的構(gòu)造解釋已經(jīng)無(wú)法滿足現(xiàn)在的生產(chǎn)需要,區(qū)塊邊部構(gòu)造特征、儲(chǔ)層及油水關(guān)系復(fù)雜,南部新井5X20發(fā)現(xiàn)新儲(chǔ)層,北部原砂體尖滅區(qū)附近新井鉆遇效果較好,單元周邊構(gòu)造特征及儲(chǔ)層分布尚需深化研究;其次截止目前Ng3、Ng4砂層組已采用注水、注聚和熱采等三種開(kāi)發(fā)方式,單元主體區(qū)目前正在注聚,注聚區(qū)目前綜合含水87.6%,單井控制剩余儲(chǔ)量3.2×104t,具備剩余油挖潛潛力。為保證油田穩(wěn)產(chǎn)擴(kuò)邊需求和剩余油挖潛需要,以國(guó)內(nèi)外對(duì)滾動(dòng)勘探開(kāi)發(fā)與剩余油開(kāi)發(fā)的大量實(shí)踐經(jīng)驗(yàn)為指導(dǎo),通過(guò)地層精細(xì)劃分與對(duì)比,建立細(xì)分層格架,并據(jù)此開(kāi)展構(gòu)造精細(xì)解釋及邊部?jī)?chǔ)層預(yù)測(cè),研究渤21斷塊邊部油水分布規(guī)律,重點(diǎn)揭示渤21斷塊館3、館4砂層組斷裂分布特征及油層分布,分析主體區(qū)微構(gòu)造與剩余油的關(guān)系,為老油田滾動(dòng)勘探開(kāi)發(fā)和主體區(qū)挖潛有利區(qū)帶預(yù)測(cè)提供地質(zhì)依據(jù)。研究表明:工區(qū)主要發(fā)育曲流河沉積為主,研究區(qū)存在較為典型且發(fā)育十分廣泛的標(biāo)準(zhǔn)層,從而保證了地層對(duì)比結(jié)果的準(zhǔn)確性。工區(qū)館陶組主力砂層,厚度大且分布廣,有成為油砂體的優(yōu)勢(shì)。井震結(jié)合完成目的層段構(gòu)造精細(xì)解釋,渤21斷塊為自東向西傾沒(méi)的單斜構(gòu)造,構(gòu)造較為簡(jiǎn)單,東陡西緩;針對(duì)該工區(qū)的主力小層Ng3-3、Ng3-4和Ng3-5進(jìn)行以邊部無(wú)井區(qū)為重點(diǎn)的儲(chǔ)層預(yù)測(cè),波阻抗反演預(yù)測(cè)結(jié)果準(zhǔn)確性好于地震屬性預(yù)測(cè)結(jié)果。結(jié)合油層精細(xì)構(gòu)造研究及儲(chǔ)層預(yù)測(cè)結(jié)果,落實(shí)主力油層邊部油水邊界及發(fā)現(xiàn)工區(qū)以發(fā)育正向微構(gòu)造為主,且正向微構(gòu)造附近,剩余地質(zhì)儲(chǔ)量和剩余油飽和度均好于負(fù)向微構(gòu)造。根據(jù)邊部?jī)?chǔ)層與油水關(guān)系及主體區(qū)剩余油與微構(gòu)造關(guān)系進(jìn)行有利區(qū)帶預(yù)測(cè)。
[Abstract]:After nearly half a century of development of Bo21 fault block in Gudao Oilfield, the early structural interpretation of exploration can no longer meet the current production needs. The structural characteristics of the edge of the block, the complex relationship between reservoir and oil and water, and the discovery of new reservoirs by 5X20 in the south of the new well. The drilling effect of the new well near the original sand body in the northern area is good, and the structural characteristics and reservoir distribution around the unit need to be further studied. Secondly, up to now, three kinds of development methods such as water injection, polymer injection and thermal recovery have been adopted in the Ng3 + Ng4 sand formation. At present, the unit main area is injecting polymer, and the polymer injection area has a comprehensive water cut of 87.6%. The remaining reserves controlled by a single well are 3.2 脳 10 ~ (4) t, so it has the potential of tapping the remaining oil potential. In order to meet the needs of expanding the edge of stable production and tapping the potential of remaining oil in oil fields, the fine division and correlation of strata are used to establish a subdivision layer framework, guided by a great deal of practical experience in rolling exploration and development of remaining oil at home and abroad. Based on the fine interpretation of structure and reservoir prediction of the edge, the distribution of oil and water in the edge of Bo-21 fault block is studied. The distribution characteristics of fault and reservoir in Guan3 and Guan4 of Bo-21 fault block are revealed, and the relationship between the microstructures in the main area and remaining oil is analyzed. It provides geological basis for rolling exploration and development of old oilfield and prediction of favorable zone for tapping potential in main area. The study shows that the meandering river deposits are mainly developed in the working area, and there are typical and widely developed standard layers in the study area, thus ensuring the accuracy of the stratigraphic correlation results. Guantao formation has the advantages of large thickness and wide distribution. Well and earthquake combined with completion of fine interpretation of the structure of the target formation, Bo-21 fault block is a monoclinic structure dipping from east to west, with simple structure and gentle structure in east, steep and west. For the main sublayer of this work area, Ng3-3 / Ng3-4 and Ng3-5, the reservoir prediction is focused on the no-well area in the edge part. The prediction result of wave impedance inversion is better than that of seismic attribute prediction. Combined with the study of fine structure of reservoir and reservoir prediction results, the oil-water boundary of the main oil layer edge and the discovery area are mainly developed forward microstructures, and the remaining geological reserves and remaining oil saturation are better than negative microstructures in the vicinity of forward microstructures. The favorable zone prediction is made according to the relationship between reservoir and oil and water and the relationship between remaining oil and microstructure in the main area.
【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
【分類號(hào)】：P618.13

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