Cryogenic cleaning methods for reclaiming and reprocessing oilfield tools
US9561529B2 · kind B2 · utility
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6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2016 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Jan 19, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The disclosure relates to the cleaning of oilfield tools made of metal, particularly to the method of reclamation oilfield tools, 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 at least one cryogen to eliminate environmental contamination and to assist in workplace safety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.