Additive composition for release of stuck drill pipe
US4230587A · kind A · utility
13Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1978 |
| Grant date | Oct 28, 1980 |
| Priority date | — |
| Expiry date | Dec 26, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/94
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An additive composition effective in the release of stuck pipe in a bore hole during a drilling operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.