Mechanical running tool lockout device
US10975633B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2019 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Jul 25, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention is a modification of U.S. Pat. No. 9,416,601 that is incorporated herein as if fully set forth. Once the tool is secure to the tubular, axial translation of the driving nut to the “locked” position prevents selective grip or release. A slot cut in the driven nut and in the surrounding housing allows additional right hand rotation so that a lug is captured on a shoulder to prevent subsequent axial compression of the selective grip assembly, where the tubular grip will be maintained with rotation. By preventing the tool from moving to the “unlocked” position when set down weight from the rig as applied, it can be operated in a variety of common conditions in today's well drilling environments with applied tension or compression as well as rotation in a direction that leaves the lug captured on a ledge adjacent the slot cut in the driven nut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.