Slant service rig
US4616454A · kind A · utility
20Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1985 |
| Grant date | Oct 14, 1986 |
| Priority date | — |
| Expiry date | Sep 19, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B15/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A guide mat for a slant service or drill rig. The guide mat comprises rearward and forward portions and an open area in the rearward portion which is used to allow access to a wellhead. Adjustable pedestals are provided which move in orthogonal planes to the plane of the guide mat and thereby allow for convenient pinning of the mast of the rig to the mat such that the mast is maintained in its correct operating position while the drilling and/or service operations are underway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.