Apparatus for controlling injection pressure for the assisted recovery of oil using polymer
US10760368B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2017 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Sep 28, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for controlling the injection pressure of an aqueous polymeric solution in an oil well is formed by: at least one pressure modulation valve, allowing, per valve, a maximum pressure loss of 5 bars practically without any mechanical deterioration, the one or more valves being connected in line with; a tube containing vortex modules, each creating a maximum pressure loss of 5 bars, practically without any mechanical deterioration, a vortex module being a section of tube, which is closed at one of its ends by a cap perforated with a hole, and which can be inserted into the detachable tube. The purpose of the apparatus is the ability to reduce the pressure to 100 bars with total mechanical deterioration of less than 10%. A method for using the apparatus is also contemplated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.