本文選題：渤海海域　切入點：河流相儲層　出處：《西南石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：河流相儲層是我國渤海灣地區(qū)廣泛發(fā)育的儲集類型,主要表現(xiàn)為巖性縱向和橫向變化大、連續(xù)性差等特征。由于受到沉積環(huán)境及水動力條件的制約,在渤海海域河流相地層中發(fā)育著大量的砂泥混雜相和砂泥交互相,儲層不僅薄而且往往疊合或交叉,給河道砂體的準確解釋帶來很多困難。目前關(guān)于渤海海域河流相儲層河道砂體的預(yù)測和綜合解釋,不僅是海上油氣田勘探開發(fā)中至關(guān)重要的問題,也是中國東部各油田“增儲上產(chǎn)”有力手段之一,它直接關(guān)系到井位的部署以及滾動勘探開發(fā)工作的成敗。 在渤海海域?qū)嶋H工區(qū)的砂體開發(fā)過程中,由于單砂體巖層厚度低于地震分辨率,或者分隔單砂體的泥質(zhì)夾層達不到地震可分辨的厚度,都導(dǎo)致河流相砂巖儲層描述結(jié)果的不確定性。而且目前對于河流相儲層巖性變化大,空間結(jié)構(gòu)復(fù)雜,波形與巖性并非一對應(yīng),尤其是在對巖性組合與地震響應(yīng)特征的定量研究方面尚顯不足,選擇地震屬性參數(shù)時存在較強的主觀性。所以,本文針對渤海海域河流相儲層砂體的分布特征,建立不同厚度變化模型、河道砂體空間分布模型、河道邊界識別模型、下切河道砂體模型,進行模型正演及屬性分析,對渤海海域河流相儲層砂體模型的地震響應(yīng)特征及其在地震屬性方面的變化規(guī)律進行深入的研究,最后結(jié)合理論模型,總結(jié)渤海Q油田河流相儲層的厚度變化特征、河道砂體的空間分布特征,河道的邊界分布特征,下切河道的分布特征,為指導(dǎo)以后在河流相地質(zhì)條件下的勘探工作提供依據(jù)。
[Abstract]:Fluvial reservoir is a widely developed reservoir type in Bohai Bay area of China, which is characterized by large longitudinal and lateral variation of lithology and poor continuity. The reservoir is restricted by sedimentary environment and hydrodynamic conditions. In the fluvial strata of Bohai Sea area, a large number of mixed sand and mud facies intersect each other, and the reservoir is not only thin, but also often superimposed or crossed. At present, the prediction and comprehensive interpretation of channel sand bodies in fluvial reservoirs in Bohai Sea area is not only a crucial issue in the exploration and development of offshore oil and gas fields, but also an important problem in the exploration and development of offshore oil and gas fields. It is also one of the powerful means of increasing reservoir and production in the oil fields in eastern China, which is directly related to the deployment of wells and the success or failure of rolling exploration and development. In the process of sand body development in the actual working area of Bohai Sea area, because the thickness of single sand body is lower than the seismic resolution, or the muddy intercalation separating single sand body can not reach the thickness of seismic discernibility. For fluvial sandstone reservoir, the lithology of fluvial facies reservoir is changed greatly, the spatial structure is complicated, and the waveform is not corresponding to lithology. Especially in the quantitative study of lithologic assemblage and seismic response characteristics, there is a strong subjectivity in selecting seismic attribute parameters. Therefore, this paper aims at the distribution characteristics of fluvial reservoir sand bodies in Bohai Sea area. The model of different thickness variation, the spatial distribution model of channel sand body, the identification model of river channel boundary, the model of cutting channel sand body, the forward modeling and attribute analysis of the model are established. The seismic response characteristics of fluvial reservoir sand body model in Bohai Sea area and its variation law in seismic attributes are studied in depth. Finally, the thickness variation characteristics of fluvial facies reservoir in Q oilfield in Bohai Sea are summarized with the theoretical model. The spatial distribution characteristics of channel sand bodies, the boundary distribution characteristics of river channels and the distribution characteristics of undercut river channels provide basis for future exploration work under fluvial geological conditions.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13;P631.4

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