System and method for establishing tubular connections
US9784054B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2014 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Dec 24, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling system includes a multi-function sub configured to be coupled to a top drive of a drilling rig and configured to be coupled to a tubular in order to selectively transfer a torque from the top drive to the tubular. The multi-function sub includes a torque sensing component configured to measure the torque provided from the top drive to the tubular via the multi-function sub, a clutch configured to suspend a transfer of torque from the top drive to the tubular when the clutch is released, and a clutch actuator communicatively coupled to the torque sensing component and configured to release the clutch when the torque measured by the torque sensing component is greater than a threshold torque value. The multi-function sub also includes a compensator configured to enable the multi-function sub to move the tubular in an axial direction relative to the top drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.