Multiple sensor for preventing a crown-block incursion on an oil well rig
US7461830B2 · kind B2 · utility
11Cited by
8References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 2004 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Oct 26, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66D1/485
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The technology disclosed herein provides a multiple sensor system that prevents crown incursion by a traveling block in an oil rig. This system calculates traveling block position, traveling block velocity and weight supported by the traveling block, and uses this information to calculate emergency stopping positions to prevent crown out by the traveling block. The system takes all these parameters into consideration when slowing and/or stopping the traveling block when it reaches a crown out position. The result is much safer operation of the traveling block on a workover rig, as well as on an oil drilling rig.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.