南极地区超低温钻井液用封堵剂的制备与评价  

Preparation and Evaluation of a Drilling Fluid Plugging Agent Used in Ultra-Low Temperature Environment in Antarctic Region

作　　者：张广生 吕开河[1] 孙金声 刘敬平 孙元伟 黄宁 易海江 ZHANG Guangsheng;LYU Kaihe;SUN Jinsheng;LIU Jingping;SUN Yuanwei;HUANG Ning;YI Haijiang(School of Petroleum Engineering,China University of Petroleum(East China),Qindao,Shandong 266580;CNPC Engineering Technology R&D Company Limited,Beijing 102206)

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]中国石油集团工程技术研究院有限公司,北京102206

出　　处：《钻井液与完井液》2025年第2期195-200,共6页Drilling Fluid & Completion Fluid

基　　金：国家自然科学基金(面上项目)“南极低温钻井液与冰层/岩层作用机理及井壁稳定调控方法”(52274021);国家重点研发计划(变革性项目)“深冰层及冰岩夹层低温钻井液钻进机理与方法”(2021YFA0719102)。

摘　　要：针对南极地区冰岩夹层井壁稳定风险高的问题,以纳米二氧化硅、硅烷偶联剂、甲基丙烯酸和甲基丙烯酸月桂脂为原料,利用反相乳液聚合法,研制了一种适用于超低温环境的有机/无机杂化封堵剂(GSF),并通过红外光谱仪、激光粒度仪、金相显微镜对GSF的结构进行了表征。结果表明,封堵剂在−50℃低温钻井液中分散性及配伍性良好,随着封堵剂加量增加,钻井液对砂床的侵入深度越低,砂盘的滤失量减少;当加量为5%时,封堵效果最优,侵入深度为7.0 cm,滤失量为76 mL。An organic/inorganic hybrid plugging agent GSF has been developed for dealing with the borehole wall destabilization problem encountered in drilling the ultra-low temperature rocks interbedded in the icesheets in Antarctic area.GSF was synthesized using inverse emulsification polymerization method with such raw materials as nano silica,silane coupling agent,methacrylic acid and lauryl methacrylate.Characterization of the molecular structure of GSF with IR spectrometer,laser particle size analyzer and metallurgical microscope showed that GSF has good dispersion performance and good compatibility with other additives in a drilling fluid in−50℃.Increasing the concentration of GSF,the invasion of the drilling fluid filtrate into the sand-bed tester becomes shallower,and the filtration rate of the drilling fluid decreases.At a concentration of 5%,GSF exhibits optimum plugging performance;the depth of invasion by the filtrate is 7.0 cm and the filter loss is 76 mL.

关 键 词：南极钻探 冰岩夹层 低温钻井液 封堵剂 反相乳液 

分 类 号：TE254.4[石油与天然气工程—油气井工程]