Drilling tool with fluid cleaner
US8316965B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2008 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | May 18, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B27/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Drilling tool (1) for drilling a well downhole where fluid is surrounding the tool and where the tool has a housing (15) and is connected to an electrical conducting means, such as a wireline. The drilling tool has a drilling head (2) and a fluid cleaner (3) for removal of elements, such as debris and formation pieces, from the fluid while drilling downhole. The fluid cleaner has a chamber (4) and a filter (5) within the chamber for separation of the elements from the fluid. The tool further comprises a pump (8) for pumping the fluid into the chamber through an inlet (11) in the drilling head (2) and through the filter before entering the well again. Furthermore, the tool comprises a driving unit for driving the pump and the drilling head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.