Process for the recovery of oil from a natural oil reservoir
US7077202B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 12, 2002 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Feb 28, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J3/04569
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for recovering oil (24) from a natural oil reservoir (18) includes the steps of separating air to produce an oxygen rich stream (40) and a nitrogen rich stream (34), providing a natural gas stream (12) and feeding at least part of the oxygen rich stream (40) and the natural gas stream (12) into a gas to liquid or GTL conversion installation (42) to produce hydrocarbon products (44) and heat. The heat produced in the gas to liquid conversion installation is used to produce energy (20) to pressurize (16) the nitrogen in the nitrogen rich stream (34) to produce a pressurized nitrogen rich stream (22). The pressurized nitrogen rich stream (22) is passed into a natural oil reservoir (18) to enhance the recovery of oil (24) from the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.