Product Introduction
This product is a nano polymer microsphere formed by reverse lotion polymerization initiated by initiator in an aqueous solution containing acrylamide as the main monomer in an oil phase composed of white oil, Span 80 and Tween 80. It can quickly disperse in water and absorb water to expand, with elastic deformation that can move deeper into the formation, block seepage channels, adjust the water drive profile, and expand the water wave and volume to achieve the goal of improving recovery rate.
Technical Indicators
Types of polymer microspheres | appearance | Density (25 ℃) g/cm3 | Dispersion performance | Separable solids | Separable solid form | Viscosity (25 ℃) | Viscosity of aqueous solution (0.2%, 25 ℃) | |
Particle size nm
| 35≤D50﹤65 | Light yellow transparent liquid | 0.920- 1.080 | Completely dispersed in water, without flocs and gel | ≥20.0% | Separable solids do not form clusters | ≤500 mPa·s | ≤2 mPa﹒s |
80≤D50＜140 | Light yellow transparent liquid | ≥20.0% | ||||||
160≤D50＜440 | Light yellow translucent liquid | ≥22.0% | ||||||
Application
This product quickly disperses in water, and after absorbing water, it has elastic deformation that can continuously move forward with the injected water, gradually blocking the formation pores and throats. After the hydration of microspheres, bridging can be used to block large pores, allowing the injected water to continuously change direction in the reservoir, maximizing the swept volume of the injected water and improving the recovery rate.
