Drilling rig masts and methods of assembly and erecting masts
US8549815B2 · kind B2 · utility
40Cited by
70References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 29, 2008 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Mar 8, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B15/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods for connection parts of a mast of a drilling rig without using a crane or other lifting machine are disclosed. In certain aspects, these methods include moving parts of a mast to be assembled with trucks and positioning the parts with the trucks to facilitate their connection. This Abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.