Aqueous solution and method for use thereof
US9476287B2 · kind B2 · utility
0Cited by
60References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2013 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Aug 18, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/32
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Oilfield treatment compositions contain water, hydrochloric acid at a concentration between 15 wt % and 45.7 wt % and a first and second fixing agent. The first fixing agent comprises urea, a urea derivative or both. The second fixing agent may be a mixture or amines and alcohols. These compositions provide corrosion inhibition when exposed to steel. The compositions may also contain an inhibitor aid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.