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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and application of sodium 2-acrylamido-2-methylpropane sulphonate/N-vinylcaprolactam/divinyl benzene as a high-performance viscosifier in water-based drilling fluid
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Synthesis and application of sodium 2-acrylamido-2-methylpropane sulphonate/N-vinylcaprolactam/divinyl benzene as a high-performance viscosifier in water-based drilling fluid

机译：高性能钻井液中2-丙烯酰胺基-2-甲基丙烷磺酸钠/ N-乙烯基己内酰胺/二乙烯基苯的合成及应用

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摘要

Aiming at good thickening ability and temperature resistance in water-based drilling fluid, a novel copolymer viscosifier (SDKP) of sodium 2-acrylamido-2-methylpropane sulfonate (NaAMPS) with N-vinylcaprolactam (NVCL) and cross-linking divinylbenzene (DVB) was prepared by micellar radical polymerization. The composition and molecular structure of optimal SDKP under the optimum reaction conditions was characterized by FT-IR, H-1-NMR, and elemental analysis, and the molecular weight was determined by GPC. Thermal gravimetric analysis showed that the SDKP was even stable when the temperature was not higher than 330 degrees C. The performance of SDKP as viscosifier for aqueous, brines, and saturated brine bentonite drilling fluid was evaluated before and after aging tests at 230 degrees C for 16 h. The evaluation results indicated that the SDKP had excellent thickening ability, thermal resistant, and salt tolerance. HTHP rheology test showed that the SDKP containing drilling fluids displayed a thermo-thickening effect in temperature range of 150 to 180 degrees C, which was beneficial to increase the viscosity and strength of fluids at high temperatures. Shear test showed that the SDKP illustrated a similar shear thinning to xanthan gum. ESEM observations demonstrated that the continuous three-dimensional network was formed in the SDKP aqueous and brines solution, which was probably the main reason for its excellent thickening properties. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44140.
机译：为了在水基钻井液中具有良好的增稠能力和耐热性，新型的2-丙烯酰胺基-2-甲基丙烷磺酸钠（NaAMPS）与N-乙烯基己内酰胺（NVCL）和交联二乙烯基苯（DVB）的共聚物增粘剂（SDKP）通过胶束自由基聚合制备。通过FT-IR，H-1-NMR和元素分析对最佳反应条件下最佳SDPK的组成和分子结构进行了表征，并通过GPC确定了分子量。热重分析表明，当温度不高于330℃时，SDPK甚至稳定。在230°C时效试验前后，评估了SDKP作为水性，盐水和饱和盐水膨润土钻井液的增粘剂的性能。 16小时评价结果表明SDK具有优异的增稠能力，耐热性和耐盐性。 HTHP流变测试表明，包含SDKP的钻井液在150至180摄氏度的温度范围内显示出热增稠效果，这有利于提高高温下的粘度和强度。剪切试验表明，SDPK的剪切稀化程度与黄原胶相似。 ESEM观察表明，在SDKP水溶液和盐水溶液中形成了连续的三维网络，这可能是其优异的增稠性能的主要原因。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，44140。

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