Data from: Effect of carboxylic group on the compatibility with retarder and the retarding side effect of the fluid loss control additive used in oil well cement

The retarding side effect and the compatibility with other additives are the main problem to limit the field application of the fluid loss control additive (FLCA) synthesized. The effect of the type and content of carboxylic acid group on the retarding side effect of FLCA and the compatibility between FLCA and the retarder AMPS-IA synthesized by 2-acrylamido-2-methyl propane sulfonic acid (AMPS) and itaconic acid (IA) was studied in this paper. The type and content of carboxylic acid group have a great influence on the fluid loss control ability, the compatibility with retarder and the retarding side effect of FLCA. FLCA containing IA or maleic acid (MA) shows better compatibility with retarder than FLCA containing acrylic acid (AA), but the retarding side effect of FLCA containing MA is weaker than that of FLCA containing IA, so MA is the most suitable monomer to synthesizing FLCA having good compatibility with retarder AMPS-IA.所合成的降滤失添加剂（fluid loss control additive, FLCA）在现场应用中主要受限于两大核心问题：其一为其存在缓凝副作用，其二为与其他外加剂的相容性欠佳。本文研究了羧酸基团的种类与含量对FLCA缓凝副作用的影响，以及FLCA与由2-丙烯酰胺-2-甲基丙磺酸（2-acrylamido-2-methyl propane sulfonic acid, AMPS）和衣康酸（itaconic acid, IA）合成的缓凝剂AMPS-IA之间的相容性。研究发现，羧酸基团的种类与含量对FLCA的降滤失性能、与缓凝剂的相容性以及其缓凝副作用均存在显著影响。相较于含丙烯酸（acrylic acid, AA）的FLCA，含IA或马来酸（maleic acid, MA）的FLCA与缓凝剂的相容性更优；但含MA的FLCA的缓凝副作用弱于含IA的FLCA，因此MA是合成与AMPS-IA缓凝剂相容性良好的FLCA的最适宜单体。