Safemode operating system for a drilling or service rig
US7114577B2 · kind B2 · utility
13Cited by
9References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2005 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | May 28, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B44/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed herein is a system designed to manage or slow the block travel speed down to safe speeds when the rig is operating in a light load/high speed condition. The system monitors and controls engine torque and horsepower, providing the minimum amount of each necessary to pull the light load out of the hold without providing sufficient excess torque to pull the load through a snag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.