Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Reexamination Certificate
2005-12-13
2005-12-13
Gregory, Bernarr E. (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Offshore prospecting
C367S015000, C367S133000
Reexamination Certificate
active
06975560
ABSTRACT:
A method and apparatus is disclosed for performing a seismic survey below the surface of a body of water and on the seabed. In one embodiment, a plurality of seismic data receivers are removably loaded in a carrier located above the surface of the water and the carrier is lowered into the water and placed at a depth relatively close to the seabed. Each of the receivers has a memory for recording the vibrations of the seabed and has a switch for activating the memory. A ROV is used to unload the receivers from the carrier and to deposit each receiver on the seabed and along a survey line. In one embodiment, the receivers comprise a frame, a pressure vessel for housing the memory and remotely activated controls, and a geophone that is separately planted into the seabed at a relatively short distance from the frame.
REFERENCES:
patent: 5189642 (1993-02-01), Donoho et al.
patent: 5442590 (1995-08-01), Svenning et al.
patent: 6456565 (2002-09-01), Grall et al.
patent: 6588980 (2003-07-01), Worman et al.
patent: 6657921 (2003-12-01), Ambs
patent: 0173477 (2001-10-01), None
patent: 0173477 (2001-10-01), None
patent: 0184184 (2001-11-01), None
patent: 0184184 (2001-11-01), None
patent: WO 01/73477 (2001-10-01), None
patent: WO 02/46793 (2002-06-01), None
Javling, Bjorn. “Depth accuracy in seabed mapping with underwater vehicles.” Norweigen Defense Researchg Establishment.
Dawe, T.C. et al.,Subsea Instrument Depolyments; Methodology and Techniques Using a Work Class Remotely Operated Vehicle(ROV), Sep. 28, 1998, Oceans '98 Conference Proceedings Nice, France, pp. 1589-1593.
Kasahara, J. et al.,Installation of High Precision Selsmometer Unit At The Ryukyu Trench Using Guam-Okinawa Geophysical Submarine Cable(GOGC: Fomer TPC-2 Cable), May 23-26, 2000, International Symposium on Underwater Technology, Proceedings, Tokyo, Japan, pp. 369-373.
Beaudoin Gerard J.
Berg Eivind W.
Fyhn Atle H.
Michell Scott T.
Openshaw Graham
BP Corporation North America Inc.
Gabala James A.
Gregory Bernarr E.
Hughes Scott A.
LandOfFree
Geophysical method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Geophysical method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Geophysical method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3505908