本文選題：弱堿三元復(fù)合驅(qū) + 結(jié)垢規(guī)律��； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：三元復(fù)合驅(qū)技術(shù)(ASP)是由堿、表面活性劑和聚合物三種化合物按適當(dāng)比例混合構(gòu)成的強(qiáng)化采油的新技術(shù),三元復(fù)合驅(qū)技術(shù)能很大程度地提高原油采收率。三元復(fù)合驅(qū)技術(shù)包括強(qiáng)堿(NaOH)三元復(fù)合驅(qū)和弱堿(Na2CO3)三元復(fù)合驅(qū),其中弱堿三元復(fù)合驅(qū)技術(shù)有更多的優(yōu)勢,弱堿三元復(fù)合驅(qū)能夠成為更加具有發(fā)展前景的驅(qū)油技術(shù)。但是,由于弱堿三元復(fù)合驅(qū)技術(shù)受到結(jié)垢問題的困擾,從而影響了它的推廣應(yīng)用。本文應(yīng)用儀器檢測和理論分析的方法,對北二西地區(qū)的注入端和采出端垢樣進(jìn)行分析,綜合研究分析該地區(qū)弱堿化三元復(fù)合驅(qū)結(jié)垢規(guī)律及其影響因素。通過取樣觀察、數(shù)據(jù)分析注入端和采出端結(jié)垢情況。分別從熱力學(xué)、結(jié)晶動力學(xué)、流體動力學(xué)等方面對碳酸鹽結(jié)垢機(jī)理進(jìn)行分析,通過實驗研究聚合物、堿、表面活性劑、懸浮物、溫度、鈣離子濃度和配制水質(zhì)等不同因素對注入端系統(tǒng)成垢的影響。檢測分析堿濃度、鈣離子濃度、碳酸根離子濃度和硅、鋁離子濃度等對采出端系統(tǒng)結(jié)垢的影響,從而對北二西地區(qū)弱堿化三元復(fù)合驅(qū)結(jié)垢規(guī)律進(jìn)行綜合分析。通過對多種除垢方法的除垢效果進(jìn)行比較,發(fā)現(xiàn)化學(xué)除垢劑除垢的方法效果最顯著。通過實驗對化學(xué)防垢劑進(jìn)行篩選,結(jié)果是二乙烯三胺五甲叉膦酸(DTPMPA)和乙二胺四甲叉膦酸鈉(EDTMPS)按照1:1的比例進(jìn)行復(fù)配對鈣垢的防垢效果比其他防垢劑好,羥基乙叉二膦酸(HEDP)比其他有機(jī)酸對硅垢的防垢效果好。
[Abstract]:ASP (ASP) is a new enhanced oil recovery technology which is composed of alkali surfactant and polymer in a proper proportion. ASP flooding technology can improve oil recovery to a great extent. The ASP flooding technology includes strong alkali NaOH ASP flooding and weak alkali Na2CO3) ASP flooding, in which the weak base ASP flooding technology has more advantages, and the weak base ASP flooding technology can become a more promising flooding technology. However, the application of weak alkali ASP flooding is affected by scaling problem. In this paper, the scale samples at the injection end and the recovery end in the North Erxi area are analyzed by means of instrument detection and theoretical analysis, and the scaling law and influencing factors of the weak alkali ASP flooding in this area are comprehensively studied and analyzed. Through sampling and observation, the data analysis of the injection end and the recovery end scaling situation. The mechanism of carbonate scaling was analyzed from thermodynamics, crystallization kinetics, fluid dynamics and so on. Polymer, alkali, surfactant, suspended solids, temperature were studied by experiment. Effects of different factors such as calcium concentration and preparation water quality on scale formation of the implanted system. The effects of alkali concentration, calcium ion concentration, carbonate ion concentration, silicon ion concentration and aluminum ion concentration on scale formation in the recovery end system were analyzed, and the scaling law of weak alkali ternary compound flooding in North Erxi area was comprehensively analyzed. By comparing the scale removal effect of many kinds of scale removal methods, it is found that the chemical scale removal agent has the most remarkable effect. The chemical scale inhibitor was screened by experiments. The results showed that the compound of diethylenetriamine pentamethylphosphonic acid (DTPMPA) and ethylenediamine tetramethylidene phosphonate sodium (EDTMPS) at 1:1 had better anti-scaling effect on calcium than other antiscaling agents. Hydroxy ethylidene diphosphonate (HEDP) has better antifouling effect on silicon scale than other organic acids.
【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】：2017
【分類號】：TE357.46
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本文編號：1833111