Open AccessResearch on Variation Law and Prediction Model of Working Viscosity of Salt Resistant Polymer
Author(s) -
Gang Sun,
Ya Li,
Dan Li,
Huifen Xia,
Lihui Wang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/514/2/022002
Subject(s) - viscosity , relative viscosity , polymer , reduced viscosity , materials science , viscoelasticity , permeability (electromagnetism) , thermodynamics , inherent viscosity , porous medium , porosity , composite material , chemistry , intrinsic viscosity , physics , biochemistry , membrane
Using seepage experiments and theoretical methods, the effects of injection fluid viscosity and injection speed on the change of working viscosity of salt-resistant polymers in porous media with different permeability are studied. And developed a working viscosity prediction model. The results show that as the permeability and viscosity of the injection fluid increase, the working viscosity of the salt-resistant polymer in the porous medium increases; as the injection speed increases, the polymer exhibits viscoelasticity, and the working viscosity decreases first and then increases; under the same conditions, the working viscosity of the salt-resistant polymer is higher than that of the ordinary polymer; in the gray correlation analysis, the correlation coefficient of the injection fluid viscosity and working viscosity is 0.958, the permeability is 0.954, and the injection speed is 0.709; a multivariate statistical regression method is used to give a prediction model for the working viscosity of salt-resistant polymers. The average deviation between the predicted value and the actual calculated value is only 4.40%.