本文選題：疏水改性聚丙烯酰胺　切入點：復合體系　出處：《西南石油大學》2015年碩士論文

【摘要】：疏水改性聚丙烯酰胺(HMPAM)因其具有良好的粘彈性和抗剪切性能,在聚合物驅提高采收率領域具有廣闊的應用前景。然而,在高溫、高礦化度等苛刻的油藏環(huán)境條件下,聚合物驅油劑有效黏度大幅度下降。針對這一問題,本文通過將不同分子結構的HMPAM混合,得到兩種具有顯著協(xié)同效應的復合體系,并進一步研究影響協(xié)同效應的因素,最后通過流變性和熒光光譜法探討協(xié)同效應的機理。本文主要研究內容如下： (1)通過熱聚合法,以丙烯酰胺(AM)和十六烷基二甲基烯丙基氯化銨(C16DMAAC)為原料合成共聚物AM/C16DMAAC,經(jīng)后水解得到三種疏水基團含量分別為0.2mo1%、0.5mo1%、1mol%的疏水改性聚丙烯酰胺P(AM/NaAA/C,6DMAAC)——PA系列；以AM、75%的甲基丙烯酰氧乙基三甲基氯化銨(DMC)和C16DMAAC為原料,合成三種陽離子度分別為1.0mol%、3.0mol%、5.0mol%的疏水改性聚丙烯酰胺P(AM/DMC/C16DMAAC)——PB系列；通過光聚合法,以AM和2-丙烯酰胺基十四烷基磺酸鈉(NaAMC14S)為原料合成共聚物AM/NaAMC14S,經(jīng)后水解得到三種疏水基團含量分別為0.05mo1%、0.10mol%、0.15mol%的疏水改性聚丙烯酰胺P(AM/NaAA/NaAMC14S)——PC系列。通過紅外光譜(FT-IR)和核磁共振氫譜(1H-NMR)分別對聚合物PA、PB和PC的結構進行表征,證實合成的聚合物為目標聚合物。采用0.2mo1/L的氯化鈉、50%體積的甲酰胺作溶劑測定不同HMPAM的特性黏數(shù),并計算出分子量。 (2)將聚合物PA與PB進行復配,研究復配比、陽離子度、礦化度、聚合物濃度、溫度、剪切速率對PA與PB之間協(xié)同增黏效應的影響規(guī)律。通過流變性測試研究聚合物PA與PB之間協(xié)同效應機理,發(fā)現(xiàn)復合體系網(wǎng)絡結構交聯(lián)點的密度和強度都高于單一聚合物溶液；通過熒光光譜法研究聚合物PA與PB之間協(xié)同效應機理,發(fā)現(xiàn)復合體系的疏水微區(qū)數(shù)量高于單一聚合物溶液,說明復合體系網(wǎng)絡結構變得更強和更加致密是聚合物之間產(chǎn)生協(xié)同效應的原因。 (3)將聚合物PA與PC進行復配,通過考察復配比、疏水單體C16DMAAC含量、疏水單體NaAMC14S含量、礦化度、聚合物濃度、溫度、剪切速率對PA與PC之間協(xié)同增黏效應的影響規(guī)律。通過流變性測試研究聚合物PA與PC之間協(xié)同效應機理,發(fā)現(xiàn)復合體系網(wǎng)絡結構交聯(lián)點的密度和強度都高于單一聚合物溶液；通過熒光光譜法研究聚合物PA與PC之間協(xié)同效應機理,發(fā)現(xiàn)復合體系的疏水微區(qū)數(shù)量高于單一聚合物溶液,說明復合體系網(wǎng)絡結構變得更強和更加致密是聚合物之間產(chǎn)生協(xié)同效應的原因。 (4)以平板夾砂物理模型為平臺,將復合體系和單一聚合物溶液的驅油效率進行對比,結果表明復合體系的驅油效率高出單一聚合物溶液至少近10%,最高達到30%,證明了復合體系具有實際應用價值。
[Abstract]:Hydrophobically modified polyacrylamide ( HMPAM ) has a wide application prospect in the field of polymer flooding recovery because of its good viscoelasticity and shear resistance . However , under severe reservoir environmental conditions such as high temperature and high salinity , the effective viscosity of polymer flooding agent is greatly reduced . In view of this problem , two kinds of composite systems with significant synergistic effect are obtained by mixing HMPAM with different molecular structures . Finally , the mechanism of synergistic effect is discussed by rheology and fluorescence spectrometry . The main contents of this paper are as follows :

( 1 ) The copolymer AM / C16DMAAC was synthesized from acrylamide ( AM ) and cetyl dimethyl allyl ammonium chloride ( C16DMAAC ) by a thermal polymerization method . Three kinds of hydrophobic modified polyacrylamide P ( AM / NaAA / C , 6DMAAC ) _ PA series were obtained by hydrolysis .
The hydrophobic modified polyacrylamide P ( AM / DMC / C16DMAAC ) PB series was prepared by AM , 75 % methacryloyloxyethyl trimethyl ammonium chloride ( DMC ) and C16DMAAC as raw materials .
The copolymer AM / NaAMC14S was synthesized by light polymerization with AM and 2 - acrylamidotetradecyl sulfonate ( NaAMC14S ) . The structures of polymer PA , PB and PC were characterized by IR ( FT - IR ) and 1H - NMR , respectively .

( 2 ) The effects of compounding ratio , cation degree , mineralization degree , polymer concentration , temperature and shear rate on the synergistic adhesion between PA and PB were studied by compounding the polymer PA with PB . The mechanism of synergistic effect between PA and PB was studied by rheological tests .
The mechanism of synergistic effect between polymer PA and PB was studied by fluorescence spectrometry . It was found that the hydrophobic micro - area of composite system was higher than that of single polymer solution , and it was suggested that the network structure of composite system became stronger and more compact is the cause of synergistic effect between polymer .

( 3 ) The polymer PA and PC were compounded . The effect of the synergistic effect between PA and PC was studied by investigating the synergistic effect between PA and PC by investigating the synergistic effect between PA and PC through rheological tests .
The mechanism of synergistic effect between polymer PA and PC was studied by fluorescence spectrometry . It was found that the hydrophobic micro - area of composite system was higher than that of single polymer solution . It was suggested that the network structure of composite system became stronger and more compact is the cause of synergistic effect between polymer .

( 4 ) The oil displacement efficiency of the composite system and single polymer solution is compared with that of single polymer solution . The results show that the oil displacement efficiency of the composite system is at least nearly 10 % higher than that of the single polymer solution , up to 30 % , which proves that the composite system has practical application value .

【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE357.46

【參考文獻】

相關期刊論文 前10條

1 趙松梅,劉昆元;二甲基二烯丙基氯化銨/丙烯酰胺共聚物的合成[J];北京化工大學學報(自然科學版);2005年04期

2 陳衛(wèi)東,于會宇,倪錫成;薩北油田三元復合驅防垢技術研究[J];大慶石油地質與開發(fā);2001年02期

3 張毅;;三次采油技術的研究現(xiàn)狀與未來發(fā)展[J];化學工程與裝備;2011年04期

4 ;Novel hydrophobically associative polyacrylamide with tunable viscosity[J];Chinese Chemical Letters;2009年11期

5 張鳳久;姜偉;孫福街;周守為;;海上稠油聚合物驅關鍵技術研究與礦場試驗[J];中國工程科學;2011年05期

6 周一民,王審秀,高振衡;激基締合物和激基復合物的形成及溶劑效應的研究[J];高等學校化學學報;1988年10期

7 淡宜,王琪;聚(丙烯酰胺-丙烯酸)/聚(丙烯酰胺-二甲基二烯丙基氯化銨)分子復合型聚合物驅油劑的增粘作用[J];高等學�；瘜W學報;1997年05期

8 高保嬌,揚云峰,酒紅芳,葛震;微乳液法制備水溶性雙親丙烯酰胺-苯乙烯嵌段共聚物[J];高分子學報;2001年05期

9 劉平德,牛亞斌,卜家泰,楊寧,張梅;疏水締合(丙烯酰胺十六烷基二甲基烯丙基氯化銨-2-丙烯酰胺基-2-甲基丙磺酸)三元共聚物的合成與性能研究[J];高分子學報;2002年05期

10 江立鼎;高保嬌;雷海波;;表面活性單體NaAMC_(14)S/丙烯酰胺共聚物的分子鏈微結構與疏水締合性[J];高分子學報;2007年05期

相關博士學位論文 前1條

1 李海平;陰離子支化多糖聚合物及其復合體系的流變性與驅油性能[D];山東大學;2012年

，

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