一种全温域聚合物缓凝剂  

A Full Temperature Range Polymer Retarder

作　　者：田野[1] 王义昕 赵军[1] 宋维凯[1] 于天帅 王贺宁 TIAN Ye;WANG Yixin;ZHAO Jun;SONG Weikai;YU Tianshuai;WANG Hening(Oilfield chemicals Division,COSL,Langfang,Hebei 065201;XinJiang Oilfield chemicals Department,COSL,Luntai,Xinjiang 841600)

机构地区：[1]中海油田服务股份有限公司油田化学研究院,河北廊坊065201 [2]中海油田服务股份有限公司新疆油化项目部,新疆轮台841600

出　　处：《钻井液与完井液》2024年第6期778-783,共6页Drilling Fluid & Completion Fluid

基　　金：中海油服公司级科研项目“海水基固井关键外加剂的开发与机理研究”(E-23236004)。

摘　　要：针对传统链状聚合物缓凝剂规律性差、中低温易超缓凝、强度发展缓慢的技术难题,根据缓凝剂作用机理、通过优化分子结构设计,在2-丙烯酰胺-2-甲基丙磺酸(AMPS)和衣康酸(IA)基础上引入苯乙烯磺酸钠(SSS)单体和长链疏水缔合单体TAS-24,制备出一种新型四元聚合物缓凝剂C-R45L,并通过红外光谱和水泥浆性能评价对其进行了研究。研究结果表明:缓凝剂C-R45L具有良好的缓凝效果,在加量为4%、温度为210℃的下稠化时间可达到347 min;在高温及中低温下都具有良好的规律性,不仅适用于高温条件,也可应用于中低温固井;对水泥石抗压强度无不利影响,中低温及顶部强度发展快,具有良好的大温差性能,适用于长封固段固井。缓凝剂C-R45L在古探1井成功应用,固井质量优良。A new quaternary polymer retarder C-R45L has been developed through molecular design to overcome the shortcomings of the conventional chain polymer retarders such as poor regularity,easy to cause overtime retardation at medium-low temperatures and slow development of strength etc.The raw materials for the synthesis of C-R45L include 2-acrylamido-2-methylpropanesulfonic acid(AMPS),itaconic acid(IA),sodium styrene sulfonate(SSS)and a long-chain hydrophobic associative monomer TAS-24.Study on C-R45L with IR spectroscopy and laboratory evaluation of C-R45L’s effects on the performance of cement slurries show that CR45L has good retarding effect;a cement slurry treated with 4%C-R45L has thickening time of 347 min at 210℃.At high and medium-low temperatures,C-R45L has good retarding regularity.C-R45L can be used at high-temperature,medium-temperature and low-temperature operations.It has no adverse effect on the compressive strength of set cement,the medium/low temperature strengths and the top strength of set cement develop very fast.Good wide-temperature-range performance makes C-R45L suitable for use in cementing long open holes.C-R45L has been successfully used in cementing the exploration well Gutan-1,and excellent cementing job quality was obtained.

关 键 词：聚合物缓凝剂 全温域 疏水缔合 规律性 大温差 

分 类 号：TE256.6[石油与天然气工程—油气井工程]