聚合物微球封堵防塌剂的制备与性能评价  

PREPARATION AND PERFORMANCE EVALUATION OF POLYMER MICROSPHERE PLUGGING AND ANTI SLOUGHING AGENT

作　　者：李勇尚 马诚[1] 杨超 王晨 周成华 张珍 Li Yongshang;Ma Cheng;Yang Chao;Wang Chen;Zhou Chenghua;Zhang Zhen(LiaoNing Petrochemical University,Fushun 113000,Liaoning,China;SINOPEC(Dalian)Petrochemical Research Institute Co.,Ltd.,Dalian 116041,Liaoning,China;SINOPEC Southwest Petroleum Engineering Company,Deyang 618000,Sichuan,China)

机构地区：[1]辽宁石油化工大学,辽宁抚顺113000 [2]中石化(大连)石油化工研究院有限公司,辽宁大连116041 [3]中石化西南石油工程公司,四川德阳618000

出　　处：《精细石油化工》2023年第4期13-17,共5页Speciality Petrochemicals

基　　金：中国石油化工股份有限公司科技部课题(082003)。

摘　　要：针对泥页岩地层微孔隙发育,钻进过程发生水敏性侵害易失稳、易垮塌的情况,以乳液聚合法制备了聚合物微球封堵防塌剂,采用扫描电镜表征了微球的微观形貌,采用拉曼光谱仪、红外光谱仪分析了微球的结构组成;采用核孔膜封堵与页岩滚动回收评价了微球的封堵防塌性能。结果表明,聚合物微球形貌规整,粒径范围为0.75~4.15μm,成核生长与反应时间呈正相关。微球对5μm孔喉封堵效果相对最优,2%(质量分数)加量下坂土浆150℃二次滚动回收率从73.3%提高至90.0%。A polymer microsphere blocking agent is prepared by emulsion polymerization.The micromorphology of the microspheres was characterized by scanning electron microscope.The structure and composition of the microspheres were analyzed by Raman spectroscopy and infrared spectroscopy,and the formation mechanism was analyzed using a laser particle size analyzer.The plugging and anti-sloughing properties of the microspheres were evaluated using nuclear pore membrane plugging instrument and shale rolling recovery experiments.The results showed that the morphology of polymer microspheres was regular and the particle sizes ranged from 0.75 to 4.15μm.The nucleation growth was positively correlated with the reaction time.Polymer microspheres have the best plugging effect on 5μm pores.When the polymer microspheres were added at 2%,the secondary rolling recovery rate of soil slurry at 150℃increased from 73.3%to 90.0%.

关 键 词：聚合物微球 封堵 防塌 

分 类 号：TE28[石油与天然气工程—油气井工程]