Polymer gels as flow improvers in water injection systems
US9903169B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 17, 2009 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Jul 22, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/09
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A water injection system that includes a primary water injection line; an injection fluid supply tank; a high pressure injection pump in fluid communication with the injection fluid supply and primary water injection line for pumping injection fluid in injection fluid supply tank through the primary water injection line; a polymer gel supply tank; and a high pressure chemical injection pump in fluid communication with the polymer gel supply tank and the water injection line configured to pump polymer gel having a viscosity of at least about 50,000 cP (at 20° C. measured using a Bohlin Rheometer CSR 50, cone and plate measuring system CP 4°/40 mm, single shear rate 1/s) in the polymer gel supply tank into the water injection line for mixture with injection fluid is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.