CAJ | 학술논문

为解决固井降滤失剂普遍存在的抗温能力差、与其他外加剂配伍性欠佳以及综合性能差等问题，选用2丙烯酰胺基2甲基丙磺酸（AMPS）、N ，N 二甲基丙烯酰胺（DMAM）和丙烯酸（AA）为共聚单体，采用水溶液聚合法制得共聚物AMPS／DMAM／AA。对共聚物AMPS／DMAM／AA的微观结构进行了分析，并对其性能进行了评价，结果表明：各单体都参与了聚合，共聚物分解温度为380℃；淡水基浆中该共聚物加量超过3％时，在温度不高于120℃时，可将滤失量控制在100 m L以内，且水泥浆初始稠度低，过渡时间短，稠化曲线线形良好，抗压强度适中，没有过度缓凝现象；饱和NaCl盐水基浆中该共聚物加量超过4％时，可将滤失量控制在80 mL以内。这表明AM PS／DM AM／AA共聚物降滤失剂的抗温、抗盐能力强，与其他外加剂、尤其是高温缓凝剂配伍性好，以该共聚物为降滤失剂的水泥浆具有很好的综合性能。
위해결고정강려실제보편존재적항온능력차、여기타외가제배오성흠가이급종합성능차등문제，선용2병희선알기2갑기병광산（AMPS）、N ，N 이갑기병희선알（DMAM）화병희산（AA）위공취단체，채용수용액취합법제득공취물AMPS／DMAM／AA。대공취물AMPS／DMAM／AA적미관결구진행료분석，병대기성능진행료평개，결과표명：각단체도삼여료취합，공취물분해온도위380℃；담수기장중해공취물가량초과3％시，재온도불고우120℃시，가장려실량공제재100 m L이내，차수니장초시주도저，과도시간단，주화곡선선형량호，항압강도괄중，몰유과도완응현상；포화NaCl염수기장중해공취물가량초과4％시，가장려실량공제재80 mL이내。저표명AM PS／DM AM／AA공취물강려실제적항온、항염능력강，여기타외가제、우기시고온완응제배오성호，이해공취물위강려실제적수니장구유흔호적종합성능。
In order to improve the temperature‐resistance performance of some domestic fluid loss addi‐tives and to understand their poor compatibility with other additives as well as their comprehensive proper‐ties ,a cement fluid loss additive was synthesized using monomers acrylic acid (AA) ,2‐acrylamido‐2‐meth‐yl‐propane sulphonic acid (AMPS) and N ,N‐dimethyl acrylamide(DMAM)through aqueous solution poly‐merization .The micro‐structural characterization of AMPS/DMAM/AA was analyzed and its performance was tested .The result showed that copolymer AMPS/DMAM/AA has the structure of all monomers and can resist high temperatures up to 380℃ .When the amount of AMPS/DMAM/AA was more than 3.0 % , the filtration of fresh‐water cement slurry can be reduced to less than 100 mL .Moreover ,the cement slurry has excellent properties such as low initial consistency ,short transition time ,good thickening curve without far delayed solidification and appropriate compressible strength .When the amount of AM PS/DM AM/AA is more than 4.0 % ,the filtration of saturated NaCl cement slurry can be reduced to less than 80 mL .It showed that the fluid loss additive AMPS/DMAM/AA has excellent temperature‐resistance and salt‐toler‐ance and good compatibility with other additives ,especially with high temperature retarders .In addition , the cement slurry that has been prepared mainly from AMPS/DMAM/AA has excellent comprehensive properties .