本文選題：聚合物泡沫 + 多孔介質(zhì)��； 參考：《東北石油大學(xué)》2015年博士論文

【摘要】：與水泡沫相比,聚合物泡沫因其液相的非Newton性,增加了其液膜的粘性,減緩了液膜排液時(shí)間,降低了氣體擴(kuò)散速度,增強(qiáng)了泡沫穩(wěn)定性,進(jìn)而可提高驅(qū)油效率。本文擬研究聚合物泡沫在多孔介質(zhì)中的一維非穩(wěn)態(tài)流動(dòng),其研究成果可為聚合物驅(qū)后的聚合物泡沫驅(qū)提供必要的理論支撐。由總量平衡原理,推導(dǎo)了聚合物泡沫在多孔介質(zhì)中流動(dòng)的氣泡總量平衡方程；并在泡沫液相、氣相質(zhì)量守恒和氣泡總量平衡方程的基礎(chǔ)上,建立了聚合物泡沫在多孔介質(zhì)中的一維非穩(wěn)態(tài)流動(dòng)的數(shù)學(xué)模型；同時(shí)也給出了作為聚合物泡沫特殊形式的水泡沫在多孔介質(zhì)中的一維非穩(wěn)態(tài)流動(dòng)的數(shù)學(xué)模型。由有限差分方法,給出了聚合物泡沫和水泡沫在多孔介質(zhì)中的一維非穩(wěn)態(tài)流動(dòng)的數(shù)值模型；并針對上述數(shù)值模型給出了用IMPES方法數(shù)值求解的數(shù)學(xué)模型中質(zhì)量守恒方程的差分方程,用TVD三階方法數(shù)值求解的總量平衡方程的差分方程的數(shù)值計(jì)算方法。由上述數(shù)值計(jì)算方法,編制了“聚合物泡沫在多孔介質(zhì)中一維非穩(wěn)態(tài)流動(dòng)的數(shù)值計(jì)算”程序及“水泡沫在多孔介質(zhì)中一維非穩(wěn)態(tài)流動(dòng)的數(shù)值計(jì)算”程序。通過HPAM泡沫和水泡沫在人造砂巖巖心中的流動(dòng)實(shí)驗(yàn),并采用Levenberg-Marquardt算法,建立了HPAM泡沫和水泡沫在人造砂巖巖心中一維非穩(wěn)態(tài)流動(dòng)的產(chǎn)生系數(shù)和聚并系數(shù)隨泡沫液相視粘度及巖心滲透率變化的關(guān)聯(lián)公式；并驗(yàn)證了聚合物泡沫在多孔介質(zhì)中的一維非穩(wěn)態(tài)流動(dòng)的數(shù)學(xué)模型及相應(yīng)的數(shù)值計(jì)算方法的正確性。由“聚合物泡沫在多孔介質(zhì)中一維非穩(wěn)態(tài)流動(dòng)的數(shù)值計(jì)算”程序,對HPAM泡沫在人造砂巖巖心中的一維非穩(wěn)態(tài)流動(dòng)進(jìn)行了數(shù)值計(jì)算和分析,得到了上述HPAM泡沫在人造砂巖巖心中的一維非穩(wěn)態(tài)流動(dòng)的含液飽和度、壓降、泡沫密度對無因次距離的分布和壓降對無因次時(shí)間的變化規(guī)律。通過對HPAM泡沫在人造砂巖巖心中一維非穩(wěn)態(tài)流動(dòng)的穩(wěn)態(tài)壓降梯度與液相注入速率和氣相注入速率的關(guān)系的數(shù)值計(jì)算的結(jié)果表明,HPAM泡沫在人造砂巖巖心中流動(dòng)的穩(wěn)態(tài)壓降梯度,隨液相注入速率的增加而增加,且隨液相流性指數(shù)的降低,液相偏離Newton流體的程度的加大,其增加的速率升高；HPAM泡沫的穩(wěn)態(tài)壓降梯度隨氣相注入速率的增加基本不變；且隨液相流性指數(shù)的降低而升高。通過對HPAM泡沫在人造砂巖巖心中一維非穩(wěn)態(tài)流動(dòng)的液相流性指數(shù)對含液飽和度、壓降及泡沫密度的影響的數(shù)值計(jì)算的結(jié)果表明,隨著HPAM泡沫液相流性指數(shù)的降低,含液飽和度前緣流動(dòng)速度加快,含液飽和度升高；隨著HPAM泡沫液相流性指數(shù)的降低,壓降值升高,液相為非Newton流體的HPAM泡沫的壓降明顯大于液相為Newton流體的水泡沫壓降；液相為非Newton流體的HPAM泡沫壓降相對無因次時(shí)間增加比液相為Newton流體的水泡沫要快,且穩(wěn)態(tài)壓降要大于水泡沫的穩(wěn)態(tài)壓降。隨著HPAM泡沫液相流性指數(shù)的降低,HPAM泡沫泡沫密度前緣流動(dòng)速度變快,泡沫密度有增加的趨勢；液相為非Newton流體的HPAM泡沫的泡沫密度要高于液相為Newton流體的水泡沫密度。通過對HPAM泡沫在人造砂巖巖心中一維非穩(wěn)態(tài)流動(dòng)的巖心滲透率對含液飽和度、壓降及泡沫密度的影響的數(shù)值計(jì)算的結(jié)果表明,隨著巖心滲透率的降低,HPAM泡沫含液飽和度前緣流動(dòng)速度加快,HPAM泡沫流動(dòng)前緣上游的含液飽和度基本不變。不同滲透率的人造砂巖巖心中HPAM泡沫非穩(wěn)態(tài)流動(dòng)壓降近似相等。隨著巖心滲透率的增大,壓降有增高的趨勢。HPAM泡沫流動(dòng)前緣上游流動(dòng)泡沫密度隨著人造砂巖巖心滲透率的降低而降低。最后,對聚驅(qū)后的人造砂巖巖心中的三種基本注入方式進(jìn)行了數(shù)值計(jì)算與分析。結(jié)果表明,相對于聚驅(qū)后的聚合物驅(qū)和氣驅(qū)、泡沫驅(qū)可在人造砂巖巖心中形成泡沫活塞,壓降大,驅(qū)油效率高。
[Abstract]:Compared with water foam, foam polymer because of its liquid phase non Newton, increase the liquid viscosity, slows the liquid discharge time, reduce the gas diffusion velocity, enhance the foam stability, which can improve the oil displacement efficiency. This paper intends to study the one-dimensional polymer foam in porous media in unsteady flow and the research results can provide necessary theoretical support for the polymer foam flooding after polymer flooding. The total balance principle, the total balance equation of the bubble polymer foam flow in porous medium; and bubbles in the liquid phase, gas phase mass and bubble population balance equation, the mathematical model of one-dimensional polymers was established foam in porous media flow; and the mathematical model of one-dimensional polymer foam as a special form of water foam in porous media is presented. The non steady flow by Co. Finite difference method, numerical model gives polymer foam and water foam in porous media of one-dimensional unsteady flow; mass conservation equation and a mathematical model is given for the numerical model use the IMPES method to solve the differential equations, numerical calculation of the total balance equation of numerical solution with TVD three order difference method the differential equation method. By the numerical calculation method, the preparation of the "polymer foam in porous media of one-dimensional unsteady flow numerical calculation program" and "water foam in porous media of one-dimensional unsteady flow numerical calculation program. Through the HPAM foam and water bubbles in the artificial sandstone rock core flow experiment, and the Levenberg-Marquardt algorithm, generation coefficient and aggregation coefficient established HPAM foam and water bubbles in the artificial sandstone cores of one-dimensional unsteady flow with the foam liquid phase viscosity and rock Correlation formula of permeability variation in the heart; and verifies the correctness of the calculation method of mathematical model of one-dimensional polymer foam in porous medium in unsteady flow and corresponding numerical. The polymer foam in porous media of one-dimensional unsteady flow numerical calculation program, the one-dimensional HPAM foam in artificial sandstone cores of non steady state the flow is calculated and analyzed, including the fluid saturation, the one-dimensional HPAM foam in the artificial sandstone of the non steady flow pressure drop, the foam density distribution of pressure drop and the dimensionless distance on the variation of dimensionless time. Numerical calculation of phase injection rate relationship by steady pressure gradient and liquid of HPAM foam in the artificial sandstone one-dimensional unsteady flow phase and injection rate. The result shows that the steady-state pressure gradient of HPAM foam flow in artificial sandstone cores And with the liquid injection rate increases, and the decrease of the liquid flow index, increase the liquid phase deviation of Newton fluid level, increase the rate of increase; the steady-state pressure gradient of HPAM foam as the gas injection rate increased basically unchanged; increased and decreased with increasing liquid flow index HPAM. Based on the bubble in the artificial sandstone one-dimensional unsteady flow of the liquid flow index of liquid saturation, numerical calculation on pressure drop and foam density. The result shows that the HPAM foam decreased with the liquid flow index, fluid saturation front flow speed, liquid saturation decreases with increasing; HPAM foam liquid flow index, the pressure drop increases, the pressure drop of the liquid phase non Newton fluid HPAM foam was significantly higher than that of the liquid phase is water bubble pressure drop Newton fluid; liquid phase for HPAM foam pressure drop of fluid phase of non Newton The dimensionless time increased to Newton water faster than the foam liquid, pressure drop and pressure drop is greater than the steady state water bubble. Decreased with the liquid flow index of HPAM foam, HPAM foam density front flow faster, the foam density increased; liquid foam density of non Newton fluid HPAM the foam is higher than that of liquid phase water foam density of Newton fluid. The permeability of HPAM foam in the artificial sandstone one-dimensional unsteady flow of fluid saturation, numerical calculation on pressure drop and foam density. The result shows that with the decrease of core permeability, HPAM foam fluid saturation front flow speed the liquid saturation containing foam flow upstream of the HPAM front is basically the same. The artificial sandstone cores with different permeability of HPAM foam non steady flow pressure drop is approximately equal. With the increase of permeability Large pressure drop bubble upstream trend of.HPAM foam flow leading edge flow with high density decreases with decreasing artificial sandstone core permeability. Finally, three kinds of basic injection method in the numerical calculation and analysis of artificial sandstone cores after polymer flooding. The results show that the displacement and displacement relative to the polymer flooding after polymer foam. The formation of foam flooding in artificial sandstone piston, large pressure drop, oil displacement efficiency is high.

【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE357.46

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 呂明明;王樹眾;;二氧化碳泡沫穩(wěn)定性及聚合物對其泡沫性能的影響[J];化工學(xué)報(bào);2014年06期

2 王杰祥;王騰飛;韓蕾;任文龍;;特低滲油藏空氣泡沫驅(qū)提高采收率實(shí)驗(yàn)研究[J];西南石油大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年05期

3 樊澤霞;李玉英;丁長燦;朱猛飛;杜建德;;聚合物對泡沫穩(wěn)定性的影響研究[J];特種油氣藏;2013年06期

4 王其偉;;孤島中二區(qū)低張力泡沫驅(qū)油體系性能研究[J];西南石油大學(xué)學(xué)報(bào)(自然科學(xué)版);2012年05期

5 耿小燼;羅幼松;牛佳玲;王德虎;范洪富;;泡沫在多孔介質(zhì)中的生成過程和形態(tài)研究[J];重慶科技學(xué)院學(xué)報(bào)(自然科學(xué)版);2012年05期

6 高海濤;;氮?dú)馀菽?qū)注入?yún)?shù)優(yōu)化試驗(yàn)研究[J];石油化工應(yīng)用;2012年01期

7 ;Manipulation of polymer foam structure based on CO_2-induced changes in polymer fundamental properties[J];Particuology;2010年06期

8 張星;趙金省;張明;周建堂;;氮?dú)馀菽诙嗫捉橘|(zhì)中的封堵特性及其影響因素研究[J];石油與天然氣化工;2009年03期

9 李松巖;李兆敏;林日億;陳月飛;郭強(qiáng);;泡沫分流酸化數(shù)學(xué)模型的建立及應(yīng)用[J];中國石油大學(xué)學(xué)報(bào)(自然科學(xué)版);2008年05期

10 龐占喜;程林松;劉慧卿;;多孔介質(zhì)中穩(wěn)定泡沫的流動(dòng)計(jì)算及實(shí)驗(yàn)研究[J];力學(xué)學(xué)報(bào);2008年05期

，

本文編號(hào)：1760286