Open AccessThe research status and summary of adsorption and retention mechanism of polymer
Author(s) -
Yang Liu,
Xingcai Wu,
Xuezhi Zhai,
Gang Shi,
Yinzhu Ye,
Shichao Li,
Peiwen Xiao
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/892/1/012023
Subject(s) - adsorption , polymer , wetting , porous medium , polymer adsorption , petroleum engineering , chemical engineering , permeability (electromagnetism) , enhanced oil recovery , produced water , water flooding , porosity , materials science , chemistry , geology , composite material , organic chemistry , engineering , biochemistry , membrane
The polymer flooding technology has been established a relatively scientific and complete technical theory system, after decades of development. Theoretical and field applications have shown that the key to profile control and flooding is adsorption and retention of polymer in reservoirs. When the polymer flows through the porous medium of the reservoir, it will be adsorbed and trapped in the pores of the cores, resulting in serious decrease in the permeability of water in the porous medium of the reservoir, while only a slight decrease in the permeability of oil, increasing the mobility of crude oil, effectively increasing the injected water swept volume, and thereby improving the comprehensive economic benefit of water-flooding development reservoir. In order to further understand the adsorption and retention mechanism of polymer, guide the oilfield production, and achieve the purpose of low injection of polymer and the high production of oil, in this paper, we conducted a lot of research on the adsorption and retention mechanism of polymer at home and abroad. The comprehensive analysis shows that electrostatic and mechanical trapping are the main causes of adsorption and retention, followed by polymer concentration, degree of hydrolysis, rock wettability and formation mineralized water composition.