Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Patent
1996-05-20
1997-04-15
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Offshore prospecting
367 20, 367 22, 367 57, 364421, G01V 128, G01V 138
Patent
active
056217005
ABSTRACT:
A method is described that attenuates reverberations in ocean bottom cable data used to generate a seismic profile. First, a seismic wave is generated and recorded by pressure and particle velocity sensor pairs. Adding the product of the pressure data times the absolute value of the velocity data and the product of the velocity data times the absolute value of the pressure data eliminates reverberations, leaving a combined signal that is a function of only the primary wave response signal. Dividing this combined signal by the number 2 and a sensitivity scaling factor, and then taking the square root of the result produces the magnitude of the primary signal. Replacing the positive
egative sign of the combined signal that existed before taking the absolute value provides the proper polarity. The data are then incorporated into a seismic profile.
REFERENCES:
patent: 2757356 (1956-07-01), Haggerty
patent: 2992694 (1961-07-01), Musgrave et al.
patent: 3943484 (1976-03-01), Balderson
patent: 4405036 (1983-09-01), Wener et al.
patent: 4486865 (1984-12-01), Ruehle
patent: 4516227 (1985-05-01), Wener et al.
patent: 4520467 (1985-05-01), Berni
patent: 4558437 (1985-12-01), Meeder et al.
patent: 4648080 (1987-03-01), Hargreaves
patent: 4935903 (1990-06-01), Sanders et al.
patent: 4937793 (1990-06-01), Shuck et al.
patent: 4958328 (1990-09-01), Stubblefield
patent: 4979150 (1990-12-01), Barr
patent: 4992992 (1991-02-01), Dragoset, Jr.
patent: 5051961 (1991-09-01), Corrigan et al.
patent: 5163028 (1992-11-01), Barr et al.
patent: 5235554 (1993-08-01), Barr et al.
patent: 5253217 (1993-10-01), Justice et al.
patent: 5253223 (1993-10-01), Svenning et al.
patent: 5365492 (1994-11-01), Dragoset, Jr.
patent: 5396472 (1995-03-01), Paffenholz
Knapp, "Geophone differencing to attenuate horizontally propagating noise", Geophysics, vol. 51, No. 9, Sep. 1986; pp. 1743-1759.
Monk, "Wavefield separation of twin streamer data", First Break, vol. 8, No. 3, Mar. 1990; pp. 96-104.
Brink, "Marine seismic exploration using vertical receiver arrays: A means for reduction of weather downtime", 49th Meeting of the European Association of Exploration Geophysicists, Jun. 9-12, 1987 Patent Abstracts, pp. 1385-1386.
Moldoveanu et al., "Digiseis-enhanced streamer surveys (DESS) in obstructed area: A case study of the Gulf of Mexico", Expanded Abstracts from the SEG International Exposition 64th Annual Meeting, Oct. 23-28, 1994, Los Angeles, pp. 872-874.
Moldoveanu et al., "Undershooting Using the Vertical Hydrophone Array -The South March Island Experiment", SEG International Association 63rd Annual Meeting, Sep. 1993.
Barr et al, 59th Ann Sec Explor Gegrbys. Int. Mtg., vol. 1, pp. 653-656, Oct. 29, 1989; abst. only herewith.
Dragroset et al., 64th Ann. SEG Int. Mtg. pp. 857-860, Oct. 23, 1994; abst. only herewith.
Moldoveanu et al, 65th Ann. SEG Int. Mtg. Oct. 8, 1995, pp. 999-1002 (Pap. No. SA 3-5); abst. only herewith.
Moskowitz Nelson
Schlumberger Technology Corporation, Geco-Prakla Div.
LandOfFree
Method for attenuation of reverberations using a pressure-veloci does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for attenuation of reverberations using a pressure-veloci, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for attenuation of reverberations using a pressure-veloci will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-366734