本文選題：亞磷酸　切入點：衣康酸　出處：《東北石油大學》2015年碩士論文

【摘要】：隨著油藏開采規(guī)模的不斷擴大,注水開采方式的持續(xù)進行,結垢問題是油田采出系統(tǒng)和集輸系統(tǒng)普遍存在的問題,油田阻垢問題逐漸成為人們關注的焦點。目前加入阻垢劑是被采用最廣泛、最經(jīng)濟、方便的方法。隨著水處理技術的發(fā)展和人們環(huán)保意識的增強,研究開發(fā)無毒、無害符合綠色化學的原理和思路的新型阻垢劑,成為阻垢劑發(fā)展的新方向,且對油田開發(fā)具有重要意義。本文實驗以水為溶劑,過硫酸銨為引發(fā)劑,以亞磷酸(H3PO3)、衣康酸(IA)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)為反應單體,通過自由基聚合方法合成了三元共聚物,以所合成產(chǎn)物對阻碳酸鈣垢的能力(阻垢率)作為評價標準,考察了引發(fā)劑種類及用量、單體配比、反應溫度、反應時間等因素對共聚物阻垢性能的影響并確定最佳合成條件。測定了共聚物的特性粘度,通過紅外分析對共聚物的結構進行了表征。實驗結果表明:所合成共聚物阻垢劑的最佳合成條件為單體配比為n亞磷酸:nA MPS:n衣康酸=5:1:5,引發(fā)劑占單體質量分數(shù)4.5%,反應溫度80℃,反應時間2h;以其阻碳酸鈣垢的能力和分散氧化鐵的能力作為指標評價共聚物阻垢、分散性能的標準,當阻垢劑加劑量為50mg/L時,能達到的最佳阻垢率為96.19%,具有良好的阻碳酸鈣垢性能,并且具有良好的熱穩(wěn)定性和耐鈣鹽性,分散氧化鐵的透光率為52.6%,具有良好的分散性能。紅外分析結果表明合成三元共聚物同時含有膦�；�、羧基和磺酸基。
[Abstract]:With the continuous expansion of reservoir production scale and the continuous development of water injection, scaling is a common problem in oil field production system and gathering and transportation system. The problem of scale inhibition in oil fields has gradually become the focus of attention. At present, adding scale inhibitor is the most widely used, most economical and convenient method. With the development of water treatment technology and the enhancement of people's awareness of environmental protection, research and development is non-toxic. The new scale inhibitor, which is harmless to the principle and thought of green chemistry, has become a new direction of scale inhibitor development and is of great significance to oilfield development. In this paper, water is used as solvent and ammonium persulfate as initiator. The ternary copolymers were synthesized by free radical polymerization with H3PO3Phosphite and AMPS as reactive monomers. The ability (scale inhibition rate) of the synthesized products to inhibit the scale of calcium carbonate was used as the evaluation criterion. The effects of initiator and amount of initiator, monomer ratio, reaction temperature, reaction time on the scale inhibition performance of the copolymer were investigated and the optimum synthetic conditions were determined. The intrinsic viscosity of the copolymer was determined. The structure of the copolymer was characterized by IR analysis. The results showed that the optimum synthesis conditions of the scale inhibitor were as follows: n: na MPS:n itaconic acid 5: 1: 5, initiator = 4.5 mass fraction of monomer, reaction temperature 80 鈩，

本文編號：1655060