本文選題：二元復(fù)合驅(qū)　切入點(diǎn)：相對(duì)滲透率曲線　出處：《東北石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：渤海油田已經(jīng)過水驅(qū)開發(fā),正在進(jìn)行聚合物驅(qū),目前需要研究聚驅(qū)后二元復(fù)合驅(qū)的實(shí)施方案。而二元復(fù)合驅(qū)相對(duì)滲透率曲線則在開發(fā)方案編制、油田開采動(dòng)態(tài)預(yù)測(cè)以及油藏?cái)?shù)值模擬中是不可缺少的重要數(shù)據(jù),本文就二元復(fù)合驅(qū)相對(duì)滲透率曲線的實(shí)驗(yàn)測(cè)定方法和影響因素展開了研究與討論。本文評(píng)價(jià)了常見聚合物增粘能力、熱穩(wěn)定性和耐剪切能力,常見表面活性劑與聚合物復(fù)配二元復(fù)合體系改善油水界面張力性能和熱穩(wěn)定性,以及聚合物、表面活性劑的匹配性,優(yōu)選了AP-P5與BHF作為組成二元復(fù)合體系的化學(xué)劑。為了精細(xì)描述二元復(fù)合體系在巖心中的粘度,以便更加精確地計(jì)算相滲曲線。本文在優(yōu)選二元復(fù)合體系的基礎(chǔ)上,通過測(cè)定不同配方二元復(fù)合體系通過含油及不含油巖心后在巖心不同位置處的粘度,研究并得到了不同聚合物濃度二元復(fù)合體系通過多孔介質(zhì)后粘度變化規(guī)律、二元復(fù)合體系在注入過程中的粘度變化規(guī)律,以及二元復(fù)合體系在多孔介質(zhì)中不同位置處的粘度變化規(guī)律。結(jié)合二元復(fù)合體系在多孔介質(zhì)中的粘度變化規(guī)律,改進(jìn)了非穩(wěn)態(tài)法測(cè)定二元復(fù)合驅(qū)相對(duì)滲透率曲線中粘度計(jì)算方法,并測(cè)定了不同毛管數(shù)、不同巖心滲透率、不同注入速度下的二元復(fù)合驅(qū)相對(duì)滲透率曲線,分析了這三種因素對(duì)二元復(fù)合驅(qū)相對(duì)滲透率曲線的影響。結(jié)果表明,隨體系毛管數(shù)增大,殘余油飽和度減小,驅(qū)油效率增大;體系中聚合物濃度越大,水相相對(duì)滲透率越小,殘余油飽和度有所減小;體系中表活劑濃度越大,油水兩相相對(duì)滲透率均有所增大,殘余油飽和度有所減小;巖心滲透率增加,同一含水飽和度下水相相對(duì)滲透率增大,油相相對(duì)滲透率也略有升高,殘余油飽和度降低;注入速度從0.5m/d增至3m/d時(shí),同一含水飽和度下油水兩相相對(duì)滲透率均有所增大,殘余油飽和度有所降低;注入速度從3m/d增至8m/d時(shí),同一含水飽和度下油水兩相相對(duì)滲透率均有所下降,殘余油飽和度有所增加。
[Abstract]:The Bohai oil field has been developed by water flooding and is carrying out polymer flooding. At present, it is necessary to study the implementation scheme of binary composite flooding after polymer flooding. The relative permeability curve of binary composite flooding is being compiled in the development plan. Oil field production performance prediction and reservoir numerical simulation are indispensable important data. In this paper, the experimental measurement methods and influencing factors of relative permeability curves of binary composite flooding are studied and discussed. The viscosity increasing ability, thermal stability and shear resistance of common polymers are evaluated in this paper. The binary composite system of surfactant and polymer can improve the interfacial tension and thermal stability of oil and water, and the matching of polymer and surfactant. In order to describe the viscosity of binary composite system in rock core and calculate the permeability curve more accurately, AP-P5 and BHF are selected as chemical agents to form binary composite system. In this paper, based on the optimal selection of binary composite system, By measuring the viscosity of binary composite systems with different formulations at different locations after passing through the oil-bearing and non-oil-bearing cores, the variation of viscosity of binary composite systems with different polymer concentrations through porous media was studied and obtained. The variation of viscosity of binary composite system in the process of injection and at different locations in porous media, combined with the change of viscosity of binary composite system in porous media, The viscosity calculation method in determining the relative permeability curve of binary composite flooding by unsteady state method is improved, and the relative permeability curves of binary composite flooding with different capillary numbers, different core permeability and different injection rate are determined. The influence of these three factors on the relative permeability curve of binary composite flooding is analyzed. The results show that with the increase of capillary number, the residual oil saturation decreases and the oil displacement efficiency increases, and the higher the polymer concentration in the system, the smaller the relative permeability of water phase. The relative permeability of both oil and water phases increases and the residual oil saturation decreases with the increase of the concentration of active agent in the system, the increase of core permeability and the increase of the relative permeability of the same water saturation in the water phase. The relative permeability of oil phase also increased slightly, and the residual oil saturation decreased, when the injection rate increased from 0.5 m / d to 3 m / d, the relative permeability of both phases increased and the residual oil saturation decreased at the same water saturation. When the injection rate increases from 3 m / d to 8 m / d, the relative permeability of both phases decreases and the residual oil saturation increases at the same water saturation.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE53

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 楊紅蘋;郭擁軍;柳建新;鐘金杭;楊雪杉;戴興星;馮茹森;;渤海二元復(fù)合驅(qū)室內(nèi)流變性評(píng)價(jià)[J];長(zhǎng)江大學(xué)學(xué)報(bào)(自然科學(xué)版);2012年12期

2 冉立;張烈輝;周明;;低滲透油藏相對(duì)滲透率曲線計(jì)算方法研究[J];特種油氣藏;2006年05期

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本文編號(hào)：1636054