Methods and apparatus for cleaning oilfield tools
US8920570B2 · kind B2 · utility
3Cited by
9References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 2012 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | May 11, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0078
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The disclosure relates to the cleaning of rods made of metal, particularly to the method of reclamation of used standard length rods, such as pump rods already used in the mechanical deep-pumping extraction of oil, as well as to the product made with the help of the mentioned method. The method of remanufacturing of standard length rods includes cleaning the rod with non-toxic particles which are able to undergo sublimation to eliminate environmental contamination and to assist in workplace safety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.