Well cleaning tools and related methods of cleaning wells in oil and gas applications
US11933140B2 · kind B2 · utility
0Cited by
10References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 2, 2021 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Aug 4, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of cleaning a well includes flowing well fluid within the well while running a cleaning tool into the well, injecting the well fluid with a fluid thickening agent through multiple nozzles of the well cleaning tool to form thickened well fluid, dislodging metallic debris and non-metallic debris accumulated along a wall of the well with multiple brushes of the cleaning tool, carrying the non-metallic debris out of the well with the thickened well fluid, and capturing the metallic debris at a capture device of the cleaning tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.