Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Patent
1985-07-25
1987-04-21
Kyle, Deborah L.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Offshore prospecting
181110, 181111, 114 61, 294 661, 294 811, G01V 138, B63B 3538, B66C 1302
Patent
active
046601848
ABSTRACT:
A device for use in borehole-seismic measurements at sea whereby seismic energy sources (7) are suspended below the surface (D) and connected to a handling line (2) which is operated by a crane arrangement on a vessel. By suspension of a minimum of two seismic energy sources (7) from a stand (3) at a distance from mutually separated floats (1) rotatably connected on horizontal axes (9) to the stand, seismic energy sources (7) can be placed and maintained at a constant depth below the surface, whereby several seismic sources (7) can be used simultaneously. The stand (3) is equipped in its central area with a guide (4) for the handling line (2), which is divided at the end connected to the respective energy sources' (7) suspension lines (8), which simplifies the positioning of the device.
REFERENCES:
patent: 3019412 (1962-01-01), Crawford
patent: 3499409 (1970-03-01), Bernhard
patent: 3509842 (1970-05-01), Mitchell
patent: 3572462 (1971-03-01), Gray
patent: 4326271 (1982-04-01), Ziolkowski
"Vertical Seismic Profiling", Part A: Principles by Bob A. Handage, Geophysical Press, Landa-Amst, 1983.
Haukjem Marten
Lindtjorn Olav
Geco Well Services A.S.
Kyle Deborah L.
Parr Ted L.
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