Arrangement for deployment of seismic cables
US4798156A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1987 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Jul 9, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B21/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An arrangement for deployment and towing of a plurality of seismic cables (2) in parallel and at a mutual distance behind a vessel whereby seismic cables (2) are wound on winch barrels (4), and are provided with an inner cable member (3) which forms a connection with the vessel (1) during a towing operations, and is, additionally, provided with a paravane/control (14, 15) to guide and maintain the cable (2) laterally in relation to the towing vessel (1). Reliable and simple depolyment and towing of the seismic cables (2) at a large distance laterally in relation to the center line of the vessel is achieved by running the inner cable member (3) through at least one guide pulley (5) suspended from a line (7) that is adjustable in length from the vessel, and is, preferably extended over a derrick device (9) projecting from the vessel. Guide pulley (5) can be hauled in and paid out from the vessel, at the same time as inner cable member (3) can be let out to a greater length from the vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.