本文選題：稠油 + 啟動壓力梯度　； 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：本文分兩部分進行稠油微觀流動規(guī)律研究,一是運用物理實驗的方法,選取遼河油田具有代表性的杜84區(qū)塊稠油油樣,分別進行稠油脫水、粘溫關(guān)系測定、巖心制備、稠油啟動壓力梯度等實驗過程,最后進行實驗數(shù)據(jù)分析。通過分析滲透率、粘度等影響因素,得出滲透率變化與啟動壓力梯度之間的關(guān)系,根據(jù)所得數(shù)據(jù)繪制出二者之間的關(guān)系曲線,得出流量越大壓力梯度越大。稠油所處的介質(zhì)滲透率越低,啟動壓力梯度越大。測試管徑尺寸越大,測得的啟動壓力梯度越大,測試管徑長度越長,啟動壓力梯度越大。另一部分是分析微觀孔隙內(nèi)稠油流動影響因素,結(jié)合兩相流模型,應(yīng)用FLUENT軟件進行數(shù)值模擬,得出微觀孔隙內(nèi)稠油的的流動情況,分別從粘度、密度、潤濕角、傾角等方面考慮,分析這幾種情況下稠油流動規(guī)律,以及與啟動壓力之間的關(guān)系,得出隨著粘度、密度、潤濕角等數(shù)值變化,稠油的啟動壓力梯度相應(yīng)變化。其中模型傾角發(fā)生變化,揭示重力在稠油流動過程中與壓力復(fù)合起到的作用。根據(jù)數(shù)值模擬結(jié)果,繪制出粘度、密度、潤濕角與啟動壓力梯度間的關(guān)系曲線。上述模擬實驗及數(shù)值模擬兩個過程的研究,實現(xiàn)了計算結(jié)果與流動規(guī)律相吻合,可直觀展示出微觀孔隙內(nèi)稠油的流動規(guī)律,并揭示重力與壓力的復(fù)合作用結(jié)果,為研究微觀孔隙內(nèi)的流動提供依據(jù)。
[Abstract]:This paper is divided into two parts to study the micro flow law of heavy oil. One is to select the heavy oil samples of the representative du 84 block in Liaohe Oilfield by using physical experiment method, and carry out the heavy oil dehydration, viscosity and temperature relationship measurement, core preparation, respectively. Heavy oil starts the experimental process such as pressure gradient, and finally carries on the experimental data analysis. By analyzing the influence factors such as permeability and viscosity, the relationship between permeability change and starting pressure gradient is obtained. According to the obtained data, the relationship curve between them is drawn, and the bigger the flow rate is, the greater the pressure gradient is. The lower the medium permeability, the greater the starting pressure gradient. The larger the diameter of the test tube, the greater the starting pressure gradient, the longer the diameter of the test tube, the greater the starting pressure gradient. The other part is to analyze the influencing factors of heavy oil flow in micro-pore, combined with two-phase flow model, using FLUENT software to simulate the flow of heavy oil in micro-pore, respectively, from viscosity, density, wetting angle. Considering the angle of inclination, this paper analyzes the flow law of heavy oil under these conditions and the relationship between heavy oil flow and starting pressure. It is concluded that with the change of viscosity, density, wetting angle and other numerical values, the starting pressure gradient of heavy oil varies accordingly. The variation of model inclination reveals the role of gravity in heavy oil flow. According to the results of numerical simulation, the relationship curves between viscosity, density, wetting angle and starting pressure gradient are drawn. The simulation experiment and numerical simulation have realized that the calculation results are consistent with the flow law, which can show the flow law of heavy oil in micro pore directly, and reveal the compound effect of gravity and pressure. It provides a basis for the study of the flow in micro pores.
【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】：TE31

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本文編號：1812360