Coil tubing string and downhole generator
US5285204A · kind A · utility
209Cited by
12References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1992 |
| Grant date | Feb 8, 1994 |
| Priority date | — |
| Expiry date | Jul 23, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/911
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A borehole system for operating a downhole generator suspended on a composite coiled tubing string. The coiled tubing has at least two separate longitudinal chambers to provide separate flow paths. A fluid is pumped from the surface through one flowpath to drive a downhole turbine powered generator for operating downhole systems. A second flowpath in the tubing is used to return fluids to the surface. The non-metal environment of the composite coiled tubing provides a non-magnetic environment in which to operate wellbore devices. Data is transmitted to the surface by way of a fiber optic conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.