Activity enhanced scale dispersant for treating inorganic sulfide scales
US10113102B2 · kind B2 · utility
1Cited by
3References
15Claims
0Family size
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Key dates
| Filing date | Dec 23, 2014 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Dec 23, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Processes and compositions to control inorganic sulfide scale formations in oilfield applications, including flow lines, wellbores, and subterranean formations. One example involves providing a treatment fluid comprising: a base fluid, a scale inhibitor, and a water clarifying agent; introducing the treatment fluid into a target region, wherein an inorganic cation and a sulfide anion are present in the target region; allowing the inorganic cation and the sulfide anion to form a sulfide precipitate; and using the treatment fluid to remove at least a portion of the sulfide precipitate from the target region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.