Device for reduction of oxygen content in drilling fluid
US4350505A · kind A · utility
21Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1978 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Aug 28, 1998 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/067
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and means for using nitrogen exhaust gases or gaseous mixtures of combustible products for reduction of oxygen in drilling fluids during the drilling of well bores and which comprises utilizing nitrogen from normally waste exhaust gases or the like, injecting the nitrogen and other gases present into the usual drilling muds for replacing the oxygen contents of the drilling muds with the nitrogen gas, whereby corrosive action of the drilling muds is greatly reduced or substantially eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.