Impulse energy tubing and casing make-up method and apparatus
US7464612B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 6, 2006 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Jun 6, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A make-up assembly and process provides a true power-tight connection between a first and second tubular segment. Each of the segments has an externally threaded male member at one end and an internally threaded female member at the other end. The male member of the first segment is inserted into the female member of the second segment. A primary torque component is applied to the first segment to engage the external threads of the first segment with the internal threads of the second segment and to advance the male member of the first segment into the female member of the second segment. The value of the primary torque component is monitored. An impulse energy component is then superimposed on the primary torque component when a predetermined onset threshold has been reached. Application of one or both of the primary and impulse energy components is discontinued when a predetermined maximum threshold has been reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.