新型有机硅聚合物抑制封堵剂性能及作用机制  

Performance and mechanism of new silicone polymer for inhibitor and plugging agent

作　　者：李东平[1] 赵贤正[1] 王子毓 吕开河[3] 张宪法 刘敬平 LI Dongping;ZHAO Xianzheng;WANG Ziyu;LV Kaihe;ZHANG Xianfa;LIU Jingping(PetroChina Dagang Oilfield Company,Tianjin 300280,China;Dagang Zhaodong Oil Company of PetroChina,Tianjin 300280,China;School of Petroleum Engineering in China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中国石油大港油田公司,天津300280 [2]中国石油大港赵东作业分公司,天津300280 [3]中国石油大学(华东)石油工程学院,山东青岛266580

出　　处：《中国石油大学学报（自然科学版）》2020年第4期135-141,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金青年基金项目(51904328);山东省自然科学基金项目(ZR2018BEE010);中央高校自主创新科研计划项目(18CX02033A)。

摘　　要：以γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(KH570)、丙烯酰胺(AM)、二甲基二烯丙基氯化铵(DMDAAC)、N-乙烯基吡咯烷酮(NVP)为单体,合成一种抗温达200℃的兼具抑制和封堵性能的有机硅处理剂ADKN,能够有效防止井壁坍塌。结果表明:ADKN可以通过在泥页岩表面发生强烈的物理化学吸附作用,形成一层致密的吸附膜,有效抑制泥页岩水化膨胀与分散,阻止压力传递,保持井壁泥页岩抗压强度,从而起到井壁防塌作用;该抑制封堵剂与其他水基钻井液处理剂配伍性好,具有一定的增黏效果和显著的降滤失作用。An organic silicon treatment agent(ADKN) with the properties of inhibition and plugging, which can resist temperature up to 200 ℃, was synthesized by using γ-(methylacryloxy) propyltrimethoxysilane(KH570), acrylamide(AM), dimethyldiallylammonium chloride(DMDAAC), N-vinylpyrrolidone(NVP) as monomers. And ADKN can effectively prevent well wall collapse. The results show that ADKN can form a dense adsorption membrane through strong physical and chemical adsorption on the surface of shale, which effectively inhibits the hydration expansion and dispersion of shale, prevents the pressure transmission, as well asmaintains the compressive strength of shale wall. Andit plays a role of anti-collapse. The inhibitor has good compatibility with other water-based drilling fluid treatment agents, and has certain viscosity increasing effect and significant fluid loss reduction effect.

关 键 词：有机硅抑制封堵剂 物理化学吸附 水化抑制 压力传递 高温 

分 类 号：TE254.3[石油与天然气工程—油气井工程]