钻井液与完井液2024，Vol.41Issue(6)：784-791,8.DOI:10.12358/j.issn.1001-5620.2024.06.012
分散聚合法制备固井降失水剂及性能研究
Preparation and Performance Evaluation of Well cementing Fluid Loss Additive by Dispersion Polymerization Method
摘要
Abstract
In view of the disadvantages of aqueous solution polymerization and inverse emulsion polymerization,herein we report for the first time preparation of a cementing fluid loss additive C-FL72L through dispersion polymerization,in which acrylamide(AM),2-acrylamido-2-methylpropanesulfonic acid(AMPS),fumaric acid(FA),N,N-dimethylacrylamide(DMA)are used as monomers,pentaerythritoltriallyl ether is used as crosslinker,and polyvinylpyrrolidone(PVP-K30)is used as stabilizer.The reaction kinetics of dispersed polymerization were investigated,and the conversion rate reached 98.9%after 4 hours of reaction.By means of infrared spectrum test,thermogravimetric analysis,high-performance liquid chromatography,gel permeation chromatography and other characterization methods,it is shown that all monomers are fully and completely polymerized,the temperature resistance of the fluid loss additive exceeds 300℃,and the molecular weight can reach 772,000.In the performance evaluation of cement slurry,fluid loss can be controlled within 40 mL at 150℃,and the engineering properties of cement slurry,such as rheological properties,thickening properties,and compressive strength,are excellent.The mechanism of the fluid loss additive is also discussed.The fluid loss additive C-FL72L has excellent application performance in functional cement slurry systems such as high-density,low-density,resin,latex,saline water,and has broad application prospects.关键词
固井/油井水泥/降失水剂/分散聚合/控失水/高温高压Key words
Cementing/Oil well cement/Fluid loss additive/Dispersion polymerization/Control fluid loss/High temperature high pressure分类
能源科技引用本文复制引用
邹亦玮,王义昕,朱思佳,宋维凯,罗宇维,汤雨霖..分散聚合法制备固井降失水剂及性能研究[J].钻井液与完井液,2024,41(6):784-791,8.基金项目
中海油服揭榜挂帅项目"海水基固井关键外加剂的开发与机理研究"(YHB23YF004)部分研究成果. （YHB23YF004）
