Deploying cables in pipelines
US5121644A · kind A · utility
43Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1991 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Feb 13, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G1/086
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Cable deployment in a fluid filled pipeline under pressure is monitored by use of a strain gauge device coupled between the leading end of the cable and a drogue. The strain gauge measures the pull of the drogue on the leading end of the cable and the strain gauge signal is transmitted back to the other end of the cable via the cable conductors. Changes in fluid flow rate, features of the pipeline, and failure of the drogue to inflate can be detected quickly by monitoring the strain gauge signal, so that the cable feed rate can be changed accordingly in order to maintain satisfactory deployment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.