Removal of H2S in drilling mud
US6365053B1 · kind B1 · utility
9Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2001 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Apr 6, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for removing hydrogen sulfide in drilling mud comprises adding to the drilling mud which is circulated in a borehole a relatively sparingly soluble divalent iron salt having a solubility from 0.1 to 1000 ppm at room temperature in the drilling mud, whereby the hydrogen sulfide reacts with the divalent iron salt to form iron sulfide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.