CAJ | 학술논문

针对目前固井降失水剂所存在的抗高温抗盐能力差、温度适应范围窄的问题，以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、丙烯酰胺(AM)、丙烯酸(AA)为主要单体，并引入新型多羟基羧酸化合物，采用自由基水溶液共聚合成了抗温、抗盐、温度适应范围广的降失水剂 HTF-110L．采用正交实验法，优选出了最佳合成工艺条件．采用红外光谱、核磁共振和热失重分析对共聚物进行了表征．结果表明：各单体成功参与聚合，聚合产物为目标产物，降失水剂耐温性能良好；由于在共聚物分子链中引入了多种功能性基团，合成的降失水剂在淡水、盐水水泥浆中具有良好的降失水性能；降失水剂分散性弱，在高温条件下对水泥浆的稳定性影响较小，低温条件下缓凝性弱，对水泥石强度发展无不良影响，具有较宽的温度适用范围；降失水剂与其他油井水泥外加剂配伍性好，以 HTF-110L 为主剂的低密度、高密度水泥浆体系具有失水量小、流变性好、稳定性佳、过渡时间短、抗压强度高等特点，综合性能优异．
침대목전고정강실수제소존재적항고온항염능력차、온도괄응범위착적문제，이2-병희선알기-2-갑기병광산(AMPS)、병희선알(AM)、병희산(AA)위주요단체，병인입신형다간기최산화합물，채용자유기수용액공취합성료항온、항염、온도괄응범위엄적강실수제 HTF-110L．채용정교실험법，우선출료최가합성공예조건．채용홍외광보、핵자공진화열실중분석대공취물진행료표정．결과표명：각단체성공삼여취합，취합산물위목표산물，강실수제내온성능량호；유우재공취물분자련중인입료다충공능성기단，합성적강실수제재담수、염수수니장중구유량호적강실수성능；강실수제분산성약，재고온조건하대수니장적은정성영향교소，저온조건하완응성약，대수니석강도발전무불량영향，구유교관적온도괄용범위；강실수제여기타유정수니외가제배오성호，이 HTF-110L 위주제적저밀도、고밀도수니장체계구유실수량소、류변성호、은정성가、과도시간단、항압강도고등특점，종합성능우이．
The currently used cement fluid loss additive has the problems of weak salt tolerance,poor thermal stabil-ity and narrow range of temperature adaptation. To solve the problems,a novel high temperature-resistant,salt-tolerant and wide-range-of-temperature-applied fluid loss additive HTF-110L was synthesized by using the monomers of 2-acrylamido-2-methylpropane sulfonic acid(AMPS),acrylamide(AM),acrylic acid(AA)and poly-hydroxyls carboxylic acid with the method of aqueous solution polymerization. Optimal synthesizing process conditions of HTF-110L were extracted by orthogonal experiment. The synthetic fluid loss additive was characterized by Fourier trans-form infrared spectroscopy,proton nuclear magnetic resonance spectroscopy and thermogravimetric analysis. The analysis results reveal that the polymer is the target product polymerized by all the monomers and has great thermal stability. The synthetic fluid loss additive has great fluid loss control performance in fresh-water slurry and saline-water slurry owing to its main chain composing of functional groups.It also presents weak dispersivity and less effect on high temperature stability,and shows weak retarding performance and less effect on the growth of cement strength under low temperature,thus having a wide temperature application range. The fluid loss additive has good compati-bility with other oil well cement additives. Both low density cement slurry and high density cement slurry mixed mainly with HTF-110L have good comprehensive properties,such as low fluid loss,good rheological properties, excellent stability,short transition time,high compressive strength,etc.