本文選題：牛74塊 + 儲層特征　； 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：牛74塊沙二段儲層物性較差,受儲層發(fā)育和物性等因素影響,斷塊產(chǎn)量遞減速度及含水上升速度均有明顯加快。為改善此種低滲透油藏開發(fā)效果,提高采收率,需進(jìn)一步對儲層特征和油水分布規(guī)律開展細(xì)致研究。本論文通過對測井、巖心分析、試油、地震及沉積相資料進(jìn)行分析研究,重新建立沙二段油層孔、滲、飽、泥解釋模型,完成了對研究區(qū)44口井孔、滲、飽、泥的重新計算,通過逐步判別分析、油水判別圖版及常規(guī)測井曲線分析方法的綜合應(yīng)用完成了研究區(qū)44口井油、水層的重新識別,油水層判別符合率達(dá)92.86%,判別圖版精度達(dá)85%。在測井解釋、地震解釋及沉積相研究基礎(chǔ)上應(yīng)用Petrel軟件完成研究區(qū)目的層三維可視化地質(zhì)建模,結(jié)果符合地質(zhì)規(guī)律,可更直觀的對儲層物性空間分布特征開展研究。利用已有開發(fā)動態(tài)資料,結(jié)合油水層識別結(jié)果,分析了研究區(qū)油水層平面及剖面分布規(guī)律。研究表明,油水分布主要受構(gòu)造因素控制,其次為儲層分布影響,整體上屬于巖性-構(gòu)造油氣藏,沒有統(tǒng)一的油水界面。最終完成儲量計算,計算石油儲量436.4×104t,較最新上報地質(zhì)儲量459.1×104t減少了22.7×104t。
[Abstract]:The reservoir physical properties of the second member of sand in block Niu 74 are poor, and due to the influence of reservoir development and physical properties, the production decline rate and the water cut rise rate of fault block are obviously accelerated. In order to improve the development effect and oil recovery of this kind of low permeability reservoir, it is necessary to further study the reservoir characteristics and the distribution of oil and water. Based on the analysis of logging, core analysis, oil testing, seismic and sedimentary facies data, the model of reservoir pore, permeability, saturation and mud interpretation in the second stage of Shahejie formation has been re-established, and the recalculations of 44 wells in the study area have been completed. Through the comprehensive application of stepwise discriminant analysis, oil-water discriminant chart and conventional logging curve analysis method, 44 wells in the study area have been re-recognized. The coincidence rate of oil-water layer discrimination is 92.86 and the accuracy of discriminating chart is 85. On the basis of log interpretation, seismic interpretation and sedimentary facies research, Petrel software is used to complete 3D visual geological modeling of the target layer in the study area. The results accord with the geological rules and can be more intuitively used to study the spatial distribution characteristics of reservoir physical properties. Based on the existing development dynamic data and the recognition results of oil-water layers, the distribution law of oil-water layer plane and profile in the study area is analyzed. The results show that the distribution of oil and water is mainly controlled by structural factors, followed by reservoir distribution, which belongs to lithologic and structural reservoirs as a whole, and there is no unified oil-water interface. Finally, the reserves are calculated at 436.4 脳 10 ~ 4 t, which is 22.7 脳 10 ~ (4) t less than the newly reported 459.1 脳 10 ~ (4) t geological reserves.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE348

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相關(guān)期刊論文 前2條

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本文編號：2012466