Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Patent
1984-04-18
1986-06-24
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Offshore prospecting
367144, 174 47, G01V 138
Patent
active
045970653
ABSTRACT:
A cable for towing air or water guns behind a seismic vessel is constructed with a reinforced air hose in the center region. The air hose (1) is a Kevlar fiber reinforced high pressure air hose with low air diffusion. Outside the hose, signal conductors are placed which are individually insulated with watertight coating and arranged substantially in a single layer of cylindrical elements (2) that are wound around the air hose (1). The interstices between the elements are filled with a water-repelling lubricant. Outside the layer of cylindrical elements (2) is a protective intermediate jacket (3) not intended primarily to have a water-sealing effect, and this is followed by tension-relieving elements (4) preferably disposed in two layers twisted in opposite directions around the intermediate jacket. An outer protective jacket (5) for the entire cable can be provided on the exterior. A cable constructed in this way provides a solution of the water-sealing problem. It is especially intended for digital data transmission.
REFERENCES:
patent: 4491939 (1985-01-01), Carpenter
patent: 4525813 (1985-06-01), Burrage
Benestad Otto
Lien Eldar K.
Snook Clive
Geophysical Company of Norway A.S.
Lobo Ian J.
Tarcza Thomas H.
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