Compositions and methods for controlling downhole sulfide deposits
US6774090B2 · kind B2 · utility
0Cited by
5References
63Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Nov 28, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/932
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compositions and methods for treating systems, especially oil and/or gas wells, characterized by metal sulfide deposits are provided. Compositions according to the invention generally comprise a thioacid, an amine salt, and a diphosphonic acid. Methods according to the invention may comprise introducing such composition into a system characterized by metal sulfide deposits, or alternatively, introducing into the system individual quantities of the composition components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.