Cryogenic cleaning methods for reclaiming and reprocessing oilfield tools
US8900372B2 · kind B2 · utility
3Cited by
13References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2013 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Nov 7, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B3/02
- 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 cryogenic liquids to eliminate environmental contamination and to assist in workplace safety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.