本文選題：主力油層 + 巖石學(xué)特征��； 參考：《西安石油大學(xué)》2015年碩士論文

【摘要】：靖邊采油廠西部的勘探開(kāi)發(fā)已取得部分進(jìn)展,但也存在砂體展布變化快,儲(chǔ)層非均質(zhì)性強(qiáng),同時(shí)研究區(qū)的勘探程度相對(duì)較低,因此摸清研究區(qū)主要儲(chǔ)層沉積相、儲(chǔ)層特征及優(yōu)質(zhì)儲(chǔ)層分布是當(dāng)前的主要任務(wù),提高對(duì)延安組及延長(zhǎng)組主力儲(chǔ)層展布特征的宏觀把握,提高勘探成功率,為靖邊采油廠下一個(gè)5年規(guī)劃、開(kāi)發(fā)部署提供地質(zhì)支撐。靖采油廠西部主力區(qū)域的目的層總體呈現(xiàn)出一個(gè)較寬緩的近東西的單斜構(gòu)造,東高西低,縱向上鼻狀構(gòu)造具有一定的繼承性,尚未見(jiàn)斷裂發(fā)育。延安組延9油層組發(fā)育曲流河相沉積,微相有邊灘、天然堤、決口扇、牛軛湖、河漫灘;延長(zhǎng)組長(zhǎng)6、長(zhǎng)8油層組發(fā)育曲流河三角洲前緣亞相沉積,微相主要發(fā)育水下分流河道、水下分流河道間、河口壩、遠(yuǎn)砂壩、席狀砂。在基礎(chǔ)理論的指導(dǎo)下,利用巖芯、錄井、測(cè)井以及各種相關(guān)分析化驗(yàn)資料,研究了西部區(qū)域的沉積特征、儲(chǔ)層物性、微觀孔隙結(jié)構(gòu)、非均質(zhì)性等特征,并對(duì)儲(chǔ)層進(jìn)行分類與評(píng)價(jià),分析了儲(chǔ)層優(yōu)劣的控制因素,對(duì)儲(chǔ)層特征與油氣富集關(guān)系進(jìn)行了探討,最后,在對(duì)已知重點(diǎn)有效儲(chǔ)層解剖基礎(chǔ)上,分析有效儲(chǔ)層分布規(guī)律并進(jìn)行有利儲(chǔ)層分布的預(yù)測(cè)。研究表明:研究區(qū)油層儲(chǔ)層的分布主要受沉積微相的控制,砂體厚,孔隙度、滲透率好的儲(chǔ)層與沉積物所處的沉積相帶都有著密切的關(guān)系。同時(shí)原始沉積物的成分、粒度、分選性及泥質(zhì)含量均與沉積物所處的沉積相帶也有著密切的關(guān)系。即沉積相帶的空間展布控制了砂體的分布規(guī)律規(guī)模,研究區(qū)各油層組砂體展布趨勢(shì)與沉積相帶展布趨勢(shì)一致。
[Abstract]:Some progress has been made in exploration and development in the western part of Jingbian Oil production Plant, but there are also rapid sand distribution changes, strong reservoir heterogeneity, and relatively low exploration degree in the study area. Therefore, the sedimentary facies of the main reservoirs in the study area are clear. Reservoir characteristics and high quality reservoir distribution are the main tasks at present. To improve the macroscopic understanding of the distribution characteristics of the main reservoirs in Yan'an formation and Yanchang formation, and to improve the success rate of exploration, it provides geological support for the next 5 years' planning and development deployment of Jingbian Oil production Plant. As a whole, the target layer in the western main area of Jingjing Oil production Plant presents a relatively wide and gentle monoclinic structure near east-west, low in the east, high in the east and low in the west, and the longitudinal nose structure has certain inheritance, and no faults have yet been developed. The Yanan formation Yan9 oil formation developed meandering river facies, microfacies with banks, natural levees, crevasse fans, Niuyong lake, and floodplain, Yanchang 6, Chang8 oil formation developed meandering river delta front subfacies deposition, microfacies mainly developed underwater distributary channel, Underwater distributary channel, estuary dam, far sand dam, sheet sand. Under the guidance of basic theory, using core, logging, logging and various related analytical and laboratory data, this paper studies the sedimentary characteristics, reservoir physical properties, microscopic pore structure, heterogeneity and other characteristics of the western region. The reservoir is classified and evaluated, the controlling factors of reservoir quality are analyzed, and the relationship between reservoir characteristics and hydrocarbon enrichment is discussed. Finally, on the basis of the known key and effective reservoir anatomy, The distribution law of effective reservoir is analyzed and the favorable reservoir distribution is predicted. The results show that the reservoir distribution in the study area is mainly controlled by sedimentary microfacies, and the reservoir with good sand body thickness, porosity and permeability is closely related to the sedimentary facies zone in which the sediment is located. At the same time, the composition, granularity, sorting property and mud content of the primary sediments are also closely related to the sedimentary facies zones in which the sediments are located. That is, the distribution of sand bodies is controlled by the spatial distribution of sedimentary facies belts, and the distribution trend of sand bodies in various oil reservoirs in the study area is consistent with that of sedimentary facies zones.
【學(xué)位授予單位】：西安石油大學(xué)
【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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