■Homopolymeric cationic polymer, white amorphous particles, high polymerization conversion rate, high molecular weight.
■ The dissolution rate is fast.
■ High temperature resistance, shear resistance and degradation resistance.
■ It is well compatible with most other additives of acid.
■The acid solution prepared by the thickener has small pollution, easy flowback, environmental protection and safety, and good comprehensive transformation effect.
Fracturing and acidizing are widely used in carbonate reservoirs at home and abroad to increase production and increase injection. As an acid thickener, polymer has the characteristics of high temperature resistance, shear resistance and anti-degradation. It has good viscosity increasing effect and good compatibility with other additives of acid. It can delay the acid rock reaction time, increase the fracture width, improve the acidification effect, and finally achieve the purpose of improving the formation permeability. It is suitable for matrix acidification, acid fracturing and other transformation measures.
The main component of the acid used in fracturing and acidification is a thickener with good performance. Its function is to improve the viscosity of the acid, reduce the diffusion rate of the active acid, increase the distance of the acid, delay the reaction time of the acid rock, increase the width of the fracture, improve the acidification effect, and finally achieve the purpose of improving the formation permeability.
Uses :
( 1 ) Carbonate reservoir matrix acidification transformation ;
( 2 ) Carbonate reservoir acid fracturing ;
( 3 ) Acidizing plugging of sandstone reservoir；
( 4 ) Sand acid fracturing.
| Type | Molecular weight ( million Mr ) | Ionicity |
| Low molecular weight | 400-600 | 70-80 |
| Low molecular weight | ≥500 | 70-80 |
| Medium molecular weight | ≥900 | 70-80 |
| High molecular weight | ≥1100 | 70-80 |
