Method of injecting tubing down pipelines
US6343657B1 · kind B1 · utility
91Cited by
30References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1998 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Nov 4, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A new method and apparatus have been developed which inserts and withdraws tubing from pipes without bending or kinking the tubing. Beneficially, the new method and apparatus may be employed to insert and withdraw tubing to depths greater than ever possible before. The method involves using a thruster pig to provide force to inject the tubing, and skate apparatuses to reduce coiling and friction of the tube. Advantageously, the apparatus is portable, easily handled, and adaptable to handle tubing of differing diameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.