Support features for extendable elements of a downhole tool body, tool bodies having such support features and related methods
US11421478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2016 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | May 11, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1078
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An earth-boring tool includes a tool body configured to rotate in a wellbore and carrying at least one extendable element. The at least one extendable element is configured to move between a retracted position and an extended position projecting radially beyond the tool body. The at least one extendable element has a mating surface. The earth-boring tool includes a support structure located in the tool body and having a support surface that is located and configured to face the mating surface of the at least one extendable element when the at least one extendable element is in the extended position. The support surface of the support structure is configured to bear at least a portion of the tangential forces acting on the extendable element during rotation of the earth-boring tool in the wellbore when the at least one extendable element is in the extended position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.