本文關(guān)鍵詞：靖邊油田梁鎮(zhèn)油區(qū)延安組延9油藏精細(xì)描述　出處：《西安石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

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【摘要】：梁鎮(zhèn)油區(qū)延9油層油藏天然能量不足,生產(chǎn)井產(chǎn)能低,產(chǎn)量遞減快,很難達(dá)到長期穩(wěn)產(chǎn)。由于目前對本區(qū)油藏的認(rèn)識無法滿足開發(fā)的需要,因此需要進(jìn)行儲層的油藏精細(xì)描述工作。本文運(yùn)用石油地質(zhì)學(xué)、層序地層學(xué)、沉積學(xué)等理論與技術(shù)方法,采用地質(zhì)、地球物理測井、巖心分析等資料,從儲層精細(xì)劃分與對比、儲層沉積相研究、儲層特征研究、儲層分類等方面進(jìn)行分析,并結(jié)合生產(chǎn)實(shí)際建立了研究區(qū)儲層綜合分類評價(jià)標(biāo)準(zhǔn)。通過研究所取得的主要成果有:(1)本文采用測井曲線和等厚度法將延9油層從上到下劃分為延91、延92和延933個(gè)小層。(2)研究區(qū)延9油層為曲流河相沉積系,主要發(fā)育曲流河道、天然堤、河漫灘三種沉積微相模式。(3)研究區(qū)儲層主要表現(xiàn)為低孔,特低滲。延9油層三個(gè)小層層內(nèi)非均質(zhì)性程度相對較弱,但具有較強(qiáng)的層間非均質(zhì)性,延91、延92小層平面非均質(zhì)性較弱,延93小層平面非均質(zhì)性較強(qiáng)。(4)根據(jù)研究區(qū)儲層物性分類標(biāo)準(zhǔn)將研究區(qū)的井分為三類,延91Ⅰ類井占33%、Ⅱ類井占50%、Ⅲ類井占17%;延92Ⅰ類井占40%、Ⅱ類井占42%、Ⅲ類井占18%;延93Ⅰ類井占16%、Ⅱ類井占29%、Ⅲ類井占55%。且ⅠⅡⅢ類井的劃分與實(shí)際生產(chǎn)數(shù)據(jù)吻合較好,儲層分類符合實(shí)際情況。
[Abstract]:The reservoir of Yan9 reservoir in Liangzhen oil area is short of natural energy, low productivity of production well, and rapid decline of production, which makes it difficult to achieve long-term stable production. Because of the current understanding of reservoir in this area can not meet the needs of development. Therefore, it is necessary to carry out fine reservoir description. In this paper, the theory and technical methods of petroleum geology, sequence stratigraphy and sedimentology are used, and geological, geophysical logging and core analysis are used. From the reservoir fine division and correlation, reservoir sedimentary facies research, reservoir characteristics research, reservoir classification and other aspects of the analysis. Combined with the production practice, the comprehensive classification and evaluation standard of reservoir in the study area is established. The main results obtained through the research are as follows: 1) in this paper, Yan 9 reservoir is divided from top to bottom into Yan 91 by logging curve and equal thickness method. Yan92 and Yan933 sublayers. 2) the Yan9 oil layer in the study area is a meandering river facies sedimentary system, mainly developed meandering river channel and natural embankment. The reservoir in the study area is mainly characterized by low porosity and low permeability. The degree of heterogeneity in three small layers of Yan-9 reservoir is relatively weak, but it has strong interlayer heterogeneity, extension 91. According to the classification criteria of reservoir physical properties in the study area, the wells in the study area can be divided into three types, and the Yan91 鈪，

本文編號：1356412