氧化石墨烯新型抗高温降滤失剂的合成与评价  

Synthesis and Evaluation of a New Graphene Oxide High Temperature Filter Loss Reducer

作　　者：曲建峰 邱正松[1] 郭保雨 钟汉毅[1] 王伟吉[1] 毛惠[1] QU Jianfeng;QIU Zhengsong;GUO Baoyu;ZHONG Hanyi;WANG Weiji;MAO Hui(School of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580;Drilling Engineering Technology Division of Shengli Petroleum Engineering Ltd., Dongying, Shandong 257100)

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]中石化胜利石油工程有限公司钻井工程技术公司,山东东营257100

出　　处：《钻井液与完井液》2017年第4期9-14,共6页Drilling Fluid & Completion Fluid

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)

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。A GO/polymer filter loss reducer GOJ was made through copolymerization of graphene oxide(GO),acrylamide(AM),2-Acrylamido-2-methylpropane sulfonic acid(AMPS),dimethyl diallyl ammonium chloride(DMDAAC)and vinyl acetate(VAC).Characterization of the synthesized product with IR and TEM photography showed that there are pentacyclic structure and amidegroup,sulfonic group,hydroxyl group in the GOJ molecules.GOJ has relative molecular weight of about3.63×105.Observed under the microscope,GOJ has dark color and a levelling platy structure.Drilling fluid laboratory experiment showed that GOJ has good filtration control property.A fresh water base drilling fluid treated with0.2%GOJ has its API filter loss reduced by70%,indicating that the performance of GOJ is better than PAMS601and JT888.GOJ has good salt resistant,and can be used in saturated salt drilling fluid.At the same concentration in drilling fluid,the filtration rates of the drilling fluids treated with GOJ under180℃,200℃and220℃are all lower than that of the drilling fluids treated with Driscal-D under the same temperature,respectively.Graphene oxide has the ability to enhance the temperature resistance of GOJ;when GOJ contains0.32%graphene oxide,the temperature resistance of GOJ is increased by about20℃,and with the increase of the content of graphene oxide in GOJ,the high temperature filtration control performance of GOJ is also increased.

关 键 词：降滤失剂 氧化石墨烯 聚合物 抗高温 抗盐 水基钻井液 

分 类 号：TE254.4[石油与天然气工程—油气井工程]