本文選題：高II組 + 沉積特征　； 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：我國(guó)大部分油田經(jīng)過多年的生產(chǎn)開發(fā),早已進(jìn)入高-特高含水期,油氣分布比較復(fù)雜,儲(chǔ)層特征的精細(xì)研究已經(jīng)成為目前油田持續(xù)穩(wěn)產(chǎn)的重點(diǎn),對(duì)下一步指導(dǎo)油田開發(fā)有著重要意義。本文以喇嘛甸L(zhǎng)8-JP182井區(qū)高II組1-18小層為例,結(jié)合試驗(yàn)區(qū)沉積背景,綜合巖心資料、化驗(yàn)分析結(jié)果以及測(cè)井曲線等資料,在層序地層學(xué)、沉積學(xué)和儲(chǔ)層地質(zhì)學(xué)等理論指導(dǎo)下,對(duì)實(shí)驗(yàn)區(qū)目的層進(jìn)行了沉積單元?jiǎng)澐謱?duì)比及沉積微相識(shí)別劃分研究,將試驗(yàn)區(qū)GII1-18層共劃分為20個(gè)沉積單元;確定試驗(yàn)區(qū)處于三角洲前緣環(huán)境,主要發(fā)育水下分流河道、河口壩、遠(yuǎn)砂壩、席狀砂四種微相類型。在此基礎(chǔ)上,對(duì)不同砂體的儲(chǔ)層特征、儲(chǔ)層性質(zhì)影響因素進(jìn)行了詳細(xì)研究及綜合評(píng)價(jià),建立了滲透率、含油飽和度的測(cè)井解釋模型,確定試驗(yàn)區(qū)目的層物性以中孔中滲為主。儲(chǔ)層物性、分布規(guī)律、非均質(zhì)性均受控于沉積演化規(guī)律和微相類型。垂向上,水進(jìn)旋回末期、水退旋回早期物性較差,隔層相對(duì)發(fā)育,層間層內(nèi)非均質(zhì)性較強(qiáng);反之,水進(jìn)旋回早期,水退旋回末期物性較好,隔層相對(duì)不發(fā)育,層間層內(nèi)非均質(zhì)性相對(duì)較弱。不同微相砂體中,水下分流河道和河口壩物性相對(duì)最好,遠(yuǎn)砂壩以中低孔、低滲為主,物性最差。在儲(chǔ)層精細(xì)研究基礎(chǔ)上,對(duì)試驗(yàn)區(qū)目的層進(jìn)行了綜合評(píng)價(jià),將儲(chǔ)層劃分為三類,III類儲(chǔ)層是剩余油富集區(qū),多位于分流河道、主體席狀砂邊部,薄層非主體席狀砂和大部分表外儲(chǔ)層等位置。通過對(duì)試驗(yàn)區(qū)儲(chǔ)層特征及評(píng)價(jià)研究,確定了高含水時(shí)期剩余油潛力較大的儲(chǔ)層分布規(guī)律,可有效指導(dǎo)研究區(qū)的剩余油挖潛工作�？蔀橛吞锸Ｓ嘤偷拈_采和可持續(xù)發(fā)展奠定理論基礎(chǔ)。
[Abstract]:After many years of production and development, most oil fields in China have already entered the period of high to very high water cut, the distribution of oil and gas is relatively complex, and the fine study of reservoir characteristics has become the focus of the sustained and stable production of oil fields at present. It is of great significance for the next step to guide the development of oil fields. In this paper, taking high-II formation 1-18 in Lamadian L8-JP182 well area as an example, combined with sedimentary background, comprehensive core data, laboratory analysis results and logging curves, under the guidance of sequence stratigraphy, sedimentology and reservoir geology, etc. In this paper, the sedimentary unit division and sedimentary microfacies identification of the target layer in the experimental area are studied. The GII1-18 layer in the experimental area is divided into 20 sedimentary units, and it is determined that the experimental area is in the delta front environment, which mainly develops underwater distributary channel, estuarine dam, and so on. Far sand dam, sheet sand four types of microfacies. On this basis, the reservoir characteristics of different sand bodies and the influencing factors of reservoir properties are studied in detail and comprehensively evaluated. A logging interpretation model of permeability and oil saturation is established, and the physical properties of the target layer in the experimental area are determined to be mesoporous and permeable. Reservoir physical property, distribution law and heterogeneity are controlled by sedimentary evolution law and microfacies type. In the early stage of the water regressive cycle, the physical properties are poor, the interlayer is relatively developed, and the heterogeneity in the interlayer is relatively strong. On the contrary, in the early stage of the water entry cycle, the physical properties of the late stage of the water regressive cycle are better, and the interlayer is relatively undeveloped. The heterogeneity in interlaminar layer is relatively weak. Among the different microfacies sand bodies, the underwater distributary channel and estuarine dam have the best physical properties. On the basis of fine reservoir research, a comprehensive evaluation of the target layer in the test area is carried out. The reservoir is divided into three types of reservoirs, which are the remaining oil rich areas, mostly located in distributary channels, and the main bedding sand edge. The thin layer of non-main sheet sand and most of the off-surface reservoirs are in the same position. Based on the study of reservoir characteristics and evaluation in the experimental area, the distribution law of remaining oil with great potential in high water cut period is determined, which can effectively guide the research area to tap the remaining oil potential. It can lay a theoretical foundation for the exploitation and sustainable development of remaining oil in oil field.
【學(xué)位授予單位】：東北石油大學(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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本文編號(hào)：1888703