氧化石墨烯新型抗高温降滤失剂的合成与评价

发布时间：2018-04-28 16:39

本文选题：降滤失剂 + 氧化石墨烯　；参考：《钻井液与完井液》2017年04期

【摘要】：为了解决改性石墨烯产品单独作为处理剂时加量大、成本高的问题,通过氧化石墨烯(GO)与丙烯酰胺(AM)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、二甲基二烯丙基氯化铵(DMDAAC)、醋酸乙烯酯(VAC)共聚,制备了氧化石墨烯/聚合物降滤失剂GOJ。借助红外谱图和透射电镜照片做的结构表征表明,GOJ中含有五元环结构和酰胺基、磺酸基、羟基等官能团,相对分子质量在3.63×10~5左右,微观下为颜色较深的平整的片状结构。性能测定结果表明,新研制的GOJ降滤失性能好,在淡水基浆中加入0.2%GOJ,可使API滤失量降低70%,降滤失能力优于聚合物类降滤失剂PAMS601和JT888等;GOJ具有较强的耐盐性能和优异的高温降滤失能力,耐盐可至饱和,同时在相同加量下,GOJ在180℃、200℃和220℃下的降滤失能力均优于国外产品Driscal-D;氧化石墨烯可以提高GOJ的耐温性能,当GOJ中氧化石墨烯含量为0.32%时,其抗高温能力提升约20℃,并且随着氧化石墨烯含量的增加,高温下的降滤失能力逐渐增强。GOJ可以用作水基钻井液的抗高温抗盐降滤失剂。
[Abstract]:In order to solve the problem of high dosage and high cost, the modified graphene oxide (GO) and acrylamide (AM), 2- acrylamide based -2- methylpropyl sulfonic acid (AMPS), two methyl diallyl ammonium chloride (DMDAAC) and vinyl acetate (VAC) were copolymerized to prepare the graphene oxide / polymer filtrate loss agent GOJ. with the aid of red. The structural characterization of external and transmission electron microscopy showed that GOJ contains five membered ring structures and amides, sulfonic groups, hydroxyl groups and other functional groups, relative molecular mass of 3.63 x 10~5, and a flat flake structure with deeper color in microcosmic. The performance results show that the newly developed GOJ has good filtrate loss, and 0.2%G is added to the fresh water pulp. OJ can reduce the loss of API by 70%, and the filtration loss is better than that of polymer filter loss agent PAMS601 and JT888. GOJ has strong salt resistance and excellent high temperature loss, and salt tolerance can be saturated. At the same addition, GOJ at 180, 200 and 220 is better than the foreign product Driscal-D. It can improve the temperature resistance of GOJ. When the content of graphene oxide in GOJ is 0.32%, its high temperature resistance is raised about 20 degrees C, and with the increase of the content of graphene oxide, the loss reduction ability at high temperature is gradually enhanced by.GOJ, which can be used as a high temperature resistant and salt reducing agent for water based drilling fluid.

【作者单位】：中国石油大学(华东)石油工程学院;中石化胜利石油工程有限公司钻井工程技术公司;
【基金】：国家重点基础研究发展规划(973)项目(2015CB251205) 国家自然科学基金项目(51474236) 国家重大专项(2017ZX05032004-005)
【分类号】：TE254.4

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