本文選題：小層對比 + 沉積微相��； 參考：《中國地質(zhì)大學(xué)(北京)》2017年碩士論文

【摘要】：臨25-1斷塊為臨盤油田大蘆家地區(qū)主力含油斷塊之一,現(xiàn)已步入后期高含水開發(fā)階段,但仍有較大開發(fā)潛力,為進(jìn)一步摸清剩余油分布規(guī)律和改善開發(fā)效果,針對本區(qū)館二上段儲層認(rèn)識中所存在的地層對比方案不準(zhǔn)確、缺乏詳細(xì)的沉積微相研究、測井解釋成果存在誤差、儲量失控等問題,我們需對本斷塊館二上段油藏展開精細(xì)描述研究工作。本論文的油藏精細(xì)描述研究主要是以沉積學(xué)、油氣田地下地質(zhì)學(xué)為理論指導(dǎo),以巖心、測井等資料為依據(jù),結(jié)合臨25-1斷塊館二上段地層的區(qū)域沉積背景,進(jìn)行了儲層的精細(xì)對比研究工作,首先確定了小層劃分對比方案,并在此基礎(chǔ)上對沉積微相特征、測井二次解釋、儲層非均質(zhì)性進(jìn)行了詳細(xì)的研究,最后利用三維地質(zhì)建模技術(shù)完成臨25-1斷塊館二上段儲層地質(zhì)模型的建立,并進(jìn)行了儲量復(fù)算。經(jīng)儲層對比分析,將臨25-1斷塊館二上段的儲層自上向下劃分為I小層和II小層兩個小層。在此基礎(chǔ)上結(jié)合研究區(qū)的曲流河區(qū)域沉積背景進(jìn)行沉積相研究,將研究區(qū)館二上段的曲流河沉積自下而上劃分為三個亞相:河道充填、河道邊緣和泛濫盆地,并進(jìn)一步劃分出四個微相:點壩、天然堤、決口扇和泛濫平原微相,并總結(jié)出各微相在剖面和平面上的展布特征。利用館二上段儲層參數(shù)的解釋模型對研究區(qū)各井進(jìn)行二次解釋研究,建立了二次解釋標(biāo)準(zhǔn):即當(dāng)孔隙度20%時,解釋為干層;當(dāng)孔隙度20%,含水飽和度40%時,解釋為油層;孔隙度20%,含水飽和度40%,解釋為水層。在二次計算的基礎(chǔ)上,對研究區(qū)館二上段儲層的非均質(zhì)性進(jìn)了研究,通過分析確定研究區(qū)館二上段儲層屬于高孔高滲儲層類型,且各小層層間與層內(nèi)非均質(zhì)程度中等,而平面非均質(zhì)性較弱。利用以上有關(guān)研究成果,采用儲層地質(zhì)建模技術(shù)進(jìn)行建模,建立了臨25-1斷塊館二上段地層的構(gòu)造模型、沉積相模型及儲層各屬性模型,利用相關(guān)模型進(jìn)行了儲量復(fù)算,核增29萬噸,并確定了開發(fā)重點應(yīng)放在II小層的點壩沉積砂體上,這為以后預(yù)測剩余油分布、調(diào)整開發(fā)方案及改善開發(fā)效果提供了地質(zhì)依據(jù)。
[Abstract]:The 25-1 fault block is one of the main oil bearing blocks in the Lulu area of the Lulu oilfield, which has now entered the stage of high water cut development, but there is still great potential for development. In order to further understand the distribution law of the remaining oil and improve the development effect, the stratigraphic contrast scheme in the reservoir of the upper two section of the library is inaccurate and lack of detailed deposition. In the study of microfacies, the results of log interpretation have errors and the reserves are out of control. We need to elaborate the fine description of the two upper reservoirs in the block library. The fine reservoir description of this paper is mainly based on the theory of sedimentology, oil and gas field underground geology, based on core and logging data, and combined with the two blocks of the Linu 25-1 block library. The fine contrast research work of the reservoir is carried out in the regional sedimentary background of the section strata. First, the small layer division and contrast scheme is determined, and on this basis, the characteristics of the sedimentary microfacies, the two interpretation of logging and the reservoir heterogeneity are studied in detail. Finally, the reservoir geological model of the two section of the temporary 25-1 fault block library is completed by the three-dimensional geological modeling technology. The reservoir is divided into two small layers of the I small layer and the II small layer from the upper and lower layers of the 25-1 fault block library. On this basis, the sedimentary facies of the Qu fluhe River region in the study area is studied by the sedimentary facies, and the upper part of the section two of the study district is divided into three from the bottom to three. Subfacies: River filling, river edge and flood basin, and further dividing four microfacies: point dam, natural embankment, crevasse fan and flood plain microfacies, and summarize the distribution characteristics of each micro phase on the profile and plane. Using the interpretation model of reservoir parameters in the upper section of the library two, two interpretations are carried out for each well in the study area, and two solutions have been established. Interpretation standard: when porosity is 20%, it is interpreted as a dry layer; when porosity is 20% and water saturation is 40%, it is interpreted as oil layer; porosity 20% and water saturation 40% are explained as water layers. On the basis of two calculations, the heterogeneity of the reservoir in the upper section of the study area museum two is studied. Through analysis, the reservoir of the upper two of the study area Museum belongs to high porosity and hyperpermeability. The reservoir type, and the heterogeneity of each small layer and layer is moderate, but the plane heterogeneity is weak. Using the relevant research results above, the reservoir geological modeling technology is used to model the structure of the two upper strata of the Linzhou 25-1 block Museum, the sedimentary facies model and the reservoir property model, and the reserves calculation is carried out by the related model. The core of the development should be placed on the sedimentary sand body of the point dam in the II small layer. This provides a geological basis for predicting the remaining oil distribution, adjusting the development plan and improving the development effect in the future, which is determined that the development emphasis should be placed on the sedimentary sand body of the point dam in the II small layer.

【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P618.13

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