Drilling geothermal wells with removal of H.sub.2 S
US4696802A · kind A · utility
13Cited by
12References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1985 |
| Grant date | Sep 29, 1987 |
| Priority date | — |
| Expiry date | Nov 27, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/19
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Geothermal wells are drilled and the raw steam containing H.sub.2 S gas and debris that is released is treated with an aqueous solution containing ferric chelate and one or more water soluble cationic polymeric catalysts to remove substantially all of the H.sub.2 S and the debris is removed in a settling zone. The polymeric catalysts accelerate the oxidation of sulfide ions to sulfur solids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.