有机聚合物固化增强剂对水平井封堵剂体系的影响  

THE INFLUENCE OF ORGANIC POLYMER CURING ENHANCER ON HORIZONTAL WELL PLUGGING AGENT SYSTEM

作　　者：陈鹏 唐凡[2] 徐春梅[2] 曹欣 陈世军[4] Chen Peng;Tang Fan;Xu Chunmei;Cao Xin;Chen Shijun(Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,Gansu,China;Oil&Gas Technology Research Institute of Changqing Oilfield Company,CNPC,Xi’an 710021,Shannxi,China;Changqing Downhole Technical Operation Company of CNPC Chuanqing Drilling Engineering Co.,Ltd.,Xi’an 710021,Shannxi,China;College of Chemishy and Chemical Engineering,Xi’an Shiyou University,Xi’an 710065,Shannxi,China)

机构地区：[1]中国石油石油化工研究院兰州化工研究中心,甘肃兰州730060 [2]中国石油长庆油田分公司油气工艺研究院,陕西西安710021 [3]中国石油集团川庆钻探工程有限公司长庆井下技术作业公司,陕西西安710021 [4]西安石油大学化学化工学院,陕西西安710065

出　　处：《精细石油化工》2023年第5期5-10,共6页Speciality Petrochemicals

基　　金：国家科学自然基金资助项目(21763030)。

摘　　要：针对目前应用于水平井封堵的水泥类封堵剂固化后脆性高、内部容易开裂,粘接强度不高的问题,通过在堵剂体系中加入有机聚合物增强剂PS-1提高体系整体强度,考察了PS-1增强剂对堵水剂体系固化过程的影响。实验结果表明:聚合物PS-1在延迟水泥水化过程的同时,在水泥固化过程中形成的白色膜状缔合结构使堵剂体系在固化后结构更加紧密,显著增强体系的整体强度。利用填砂管物模实验评价了堵剂体系的封堵性能,结果表明:在封堵剂体系固化28 d时,封堵剂突破压力达到0.92 MPa/cm,封堵率达到95.9%。In response to the problems of high brittleness,internal cracking and low bonding strength of cement plugging agent currently used for horizontal well plugging after solidification,the organic polymer reinforcing agent PS-1 was added to the plugging agent system to improve the overall strength of the system.The effect of PS-1 enhancer on the solidification process of the water plugging agent system was investigated through infrared spectrum,XRD and SEM analysis.The test results showed that polymer PS-1 can delay the cement hydration process,and the white film-like association structure formed during the cement solidification process can make the structure of the plugging agent system more compact after solidification,and significantly enhance the overall strength of the system.Finally,the sealing performance of the plugging agent system at different curing times was evaluated through physical model test of the sand filled pipes.When the plugging agent system is solidified for 28 d,the penetration pressure of the plugging agent reaches 0.92 MPa/cm,and the plugging rate reaches 95.9%.

关 键 词：封堵剂 粘接强度 有机聚合物 水化产物 

分 类 号：TE39[石油与天然气工程—油气田开发工程]