Chemical filter bypass tool and associated methods
US11725477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Aug 3, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter bypass tool for use in a subterranean well can include an inner tube having a flow passage extending longitudinally through the inner tube, a pipe surrounding the inner tube, with an annulus formed radially between the pipe and the inner tube, the pipe being perforated to permit fluid communication between the annulus and an exterior of the pipe, and a bypass valve having closed and open configurations. In the closed configuration the bypass valve blocks fluid flow from the annulus to the flow passage. In the open configuration the bypass valve permits fluid flow from the annulus to the flow passage. The bypass valve is configured to open in response to a predetermined pressure differential from the annulus to the flow passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.