Subsea deoxygenation in a water injection process plant
US10370272B2 · kind B2 · utility
3Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2016 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | May 14, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water injection process plant includes a catalytic deoxygenation unit located subsea that makes use of a reducing agent sent from topsides in liquid form. The catalyst is preferably a palladium catalyst or its equivalent. The reducing agent is an oxygen scavenger such as but not limited to hydrazine, carbohydrazide, sodium erythorbate, methyl ethyl ketoxime (“MEKO”), hydroquinone, diethylhydroxylamine (“DEHA”), formic acid (methanoic acid). A chemical umbilical can be used to deliver the reducing agent to a mixer located upstream of the deoxygenation unit, where the agent is mixed with seawater containing oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.