Automatically detecting and unwinding accumulated drill string torque
US12012841B2 · kind B2 · utility
0Cited by
6References
17Claims
0Family size
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Key dates
| Filing date | Mar 15, 2021 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | May 16, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods, apparatus, and products for receiving measurements indicative of present value torque (TrqPv) currently being applied by a top drive to a drill string extending in a well that penetrates a subterranean formation, and releasing torque accumulated in the drill string by determining polarity of TrqPv and, in response to a manual or automatic trigger, causing the top drive to perform an unwinding operation in a direction opposite to the determined TrqPv polarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.