Open AccessPreparation of VCAP/AMPS/DMDAAC/AM Quaternary Copolymer Filtrate Reducer for Drilling Fluids
Author(s) -
Wei Zhuang,
Xin Wang,
Zhongyong Ma,
Yongming Jiao,
Zhibin Wang,
Weiqiang Cao,
Zhiwen Dai
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/330/4/042016
Subject(s) - copolymer , reducer , monomer , drilling fluid , polymer chemistry , materials science , slurry , size exclusion chromatography , chemical engineering , chemistry , organic chemistry , composite material , polymer , drilling , civil engineering , engineering , metallurgy , enzyme
It is difficult for existing filtrate reducer to meet oilfield application requirements. Based on the molecular structure design principle of temperature-resistant vinyl copolymer, a quaternary copolymer filtrate reducer has been developed with VCAP, AMPS, DMDAAC and AM as monomers through water solution copolymerization using redox initiation system. The optimum synthesis conditions were as follows: the mole ratio of monomer was VCAP/AMPS/DMDAAC/AM=1:1:1:9, reaction temperature was 70°C, reaction time was 6 h, initiator mass ratio was 0.2% and total monomer mass ratio was 20%. The filtration loss of base slurry with 1wt% optimum synthetic product after aging at 150 °C for 16 h was 5.2 mL.