As driven by the increase in global fuel demand and decrease in worldwide reserves of conventional oil, it is important to develop new production technologies for heavy oil. In this work, copolymers PAAI₇, PAAI₁₀, and PAAI₁₅ were synthesized and evaluated as potential viscosity reducers for heavy oil. iso‐Tridecyloxypolyethylene glycol acrylates (I13C_xAA, x = 7, 10, 15), acrylic amide (AM), and 2‐acrylamido‐2‐methylpropane sulfonic acid (AMPS) were polymerized to give the copolymers PAAI_x, respectively. Copolymers PAAI_x were characterized by FTIR, ¹H NMR spectroscopy, and TGA and showed good thermal stabilities as the decomposition temperature was above 350°C. Their viscosity‐average molecular weights were measured as in the range between 6.53 × 10⁶ and 10.58 × 10⁶ g/mol. The effects of temperature, shear rate, and salinity on the viscosity of polymer solutions were studied, and PAAI_x had reasonable rheological properties. The solutions of PAAI_x in formation water could emulsify heavy oil sample to form oil‐in‐water emulsion when mass ratio of oil:water was in the range of 6:4‐2:8, respectively. The rates of reduction in viscosity of emulsions compared with that of original oil sample were 53.5%‐97.5% at 50°C under shear rate of 20 s⁻¹. The effects of oil:water ratio, emulsifying temperature, and shear rate on the viscosities of emulsions were extensively studied, and the effect of the polymer structure on the emulsification and viscosity reduction of heavy oil was also discussed. Among three copolymers, PAAI₁₅ formed the most stable emulsion with heavy oil and the emulsion had the lowest viscosity. PAAI₁₅ had the potential for further study.

中文翻译：

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异十三烷基氧基聚乙二醇丙烯酸乙二醇酯共聚物作为重油潜在降粘剂的合成及实验室评估

在全球燃料需求增加和全球常规油储量减少的推动下，开发重油的新生产技术非常重要。在这项工作中，合成了共聚物PAAI ₇，PAAI ₁₀和PAAI ₁₅并评估为重油的潜在降粘剂。分别聚合异十三烷基氧基聚乙二醇丙烯酸丙烯酸酯（I13C _x AA，x = 7，10，15 ），丙烯酸酰胺（AM）和2-丙烯酰胺基-2-甲基丙烷磺酸（AMPS），分别得到共聚物PAAI _x。FTIR ¹表征了共聚物PAAI _x当分解温度高于350℃时，1 H NMR光谱和TGA显示出良好的热稳定性。测得它们的粘均分子量为6.53×10 ⁶至10.58×10 ⁶  g / mol。研究了温度，剪切速率和盐度对聚合物溶液粘度的影响，并且PAAI _x具有合理的流变性。当油与水的质量比分别为6：4-2：8时，地层水中的PAAI _x溶液可乳化重油样品，形成水包油乳液。在20 s ^-1的剪切速率下，在50°C下，乳剂的粘度与原始油样的粘度降低率是53.5％-97.5％。。广泛研究了油水比，乳化温度和剪切速率对乳液粘度的影响，并讨论了聚合物结构对重油乳化和粘度降低的影响。在三种共聚物中，PAAI ₁₅与重油形成最稳定的乳液，而乳液的粘度最低。PAAI ₁₅具有进一步研究的潜力。