Device to insert a flexible member into pressurized wellhead housing
US7686091B2 · kind B2 · utility
4Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2008 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Oct 30, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drive assembly for inserting hose within a wellhead housing that intermittently reciprocates the hose feed into the housing. The intermittent reciprocating action feeds the hose past obstacles in the wellhead housing, such as within annuluses between tubulars. The drive assembly includes rollers that frictionally contact the hose and when rotated drive the hose forward. The rollers are rotated by a drive sprocket that is rotated by a hand crank. An offset cam assembly between the hand crank and the drive sprocket adds an orbital/reciprocating motion to the drive assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.