磺化聚丙烯酰胺溶液性粘度稳定性及驱油性能研究

发布时间：2018-06-29 03:07

本文选题：磺化聚丙烯酰胺 + 粘度　；参考：《东北石油大学》2015年硕士论文

【摘要】：聚合物驱在国内油田是较为普遍的驱油手段。随着开采力度的加大,我国越来越多的高温高矿化度油藏被开采出来,但普通的聚合物具有不耐高温、耐盐性差、易降解等缺点,因此,一系列新型高效的聚合物被研制出来。研究采油污水处理技术时,除了单一的物理方法,科研工作者现在转向高效的化学处理剂的研发上,络合剂就是目前应用最广泛的化学处理剂,可以改变金属存在状态,有效提高聚合物溶液粘度。本文对比了磺化聚丙烯酰胺和部分水解聚丙烯酰胺的抗温耐盐性能上的差异;系统筛选出了8种络合剂,降低聚合物溶液中的二价金属离子浓度从而提高其粘度;且进行抗氧化剂的筛选,并将优选出的抗氧化剂与优选出的络合剂进行复配;利用最优试剂组合进行聚合物溶液粘度稳定性实验和驱油实验。实验结果表明:(1)二价金属离子相比于一价金属离子,更易与聚合物分子结合,使溶液粘度下降;与部分水解聚丙烯酰胺相比,磺化聚丙烯酰胺具有更优异的耐温抗盐性;磺化聚合物溶液粘度随溶液浓度的上升而升高;当温度、矿化度降低时,溶液粘度升高;溶液pH值在11左右时,溶液粘度最高;(2)金属离子络合剂能有效的络合水中二价金属离子,不过在相同条件下,每种络合剂的最佳用量都不相同,且每种络合剂的增粘效果也不同,其中效果最好的有机络合剂是三乙醇胺,无机络合剂是葡萄糖酸钠,与未加络合剂的SPAM溶液相比粘度均提高了近2倍;(3)相比空白聚合物溶液以及单一试剂的聚合物溶液,加入复配试剂后的聚合物溶液粘度最高,可见复配试剂对于提高SPAM溶液初始粘度十分有效;(4)在粘度稳定性实验中,相比空白聚合物溶液以及单一试剂的聚合物溶液,加入复配试剂的聚合物溶液的稳定性最佳;(5)在驱油实验中,加入复配试剂的聚合物体系相比空白的聚合物体系采收率要提高15%以上。
[Abstract]:Polymer flooding is a more common oil displacement method in domestic oil fields. With the increase of mining intensity, more and more high temperature and high salinity reservoirs have been mined in our country, but the common polymers have the disadvantages of high temperature resistance, poor salt tolerance and easy degradation. Therefore, a series of new and efficient polymers have been developed. In addition to a single physical method, researchers are now turning to the research and development of efficient chemical treatment agents. The complexing agent is the most widely used chemical treatment agent at present. It can change the state of metal and effectively improve the viscosity of the polymer solution. The temperature resistance of sulfonated polyacrylamide and partially hydrolyzed polyacrylamide is compared in this paper. 8 kinds of complexing agents were selected to reduce the concentration of two valence metal ions in the polymer solution and improve their viscosity, and the screening of antioxidants was carried out, and the optimized antioxidants were mixed with the preferred complexing agent; the viscosity stability experiment of polymer solution was carried out with the optimum test agent combination. The experimental results show that: (1) the two valence metal ions are more easily associated with the polymer molecules than the monovalent metal ions, and the viscosity of the solution decreases. Compared with the partially hydrolyzed polyacrylamide, the sulfonated polyacrylamide has more excellent temperature resistance and salt resistance; the viscosity of the sulfonated polymer increases with the increase of the concentration of the solution; when temperature, When the salinity is reduced, the viscosity of the solution increases and the solution pH value is about 11, the solution viscosity is the highest. (2) the metal ion complexing agent can be effective two valence metal ions in the collaterals, but under the same conditions, the best dosage of each complexing agent is different, and the adhesive effect of each complexing agent is different, among which the best organic complexing agent is used. It is triethanolamine, the inorganic complexing agent is sodium gluconate, and the viscosity of the SPAM solution is nearly 2 times higher than that of the uncomplexing agent. (3) the viscosity of the polymer solution after adding the compound reagent is the highest compared to the blank polymer solution and the polymer solution of the single reagent. (4) the reagents are very effective for improving the initial viscosity of the solution; (4 In the viscosity stability test, the stability of the polymer solution added to the compound reagent is best compared to the blank polymer solution and the polymer solution with the single reagent. (5) in the oil displacement experiment, the recovery of the polymer system with the compound reagents is increased by more than 15% compared with the blank polymer system.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.46

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