Acoustic lens for marine seismic data multiple reflection noise reduction

Patent · Tue Nov 25 04:00:00 EST 1986

OSTI ID:7230481

Clark, W H

This patent describes an apparatus for use in gathering seismic data in an area covered by a body of water having a surface, comprising: a seismic vessel; a seismic source towed by the seismic vessel for generating in the body of water an acoustic wave which will penetrate to and be reflected from at least one reflective horizon located below the body of water; a streamer towed by the seismic vessel in the body of water below its surface, including at least one hydrophone for detecting the acoustic wave reflected from at least one reflective horizon; a first gas dispensing tube and a second gas dispensing tube disposed in the water adjacent the vessel, the tubes each having a side wall and a plurality of perforations through the side wall for permitting gas bubbles to escape into the water; a first paravane attached to the first tube; a second paravane attached to the second tube; and control means connected to the first paravane and to the second paravane for controlling the position of the paravanes relative to the streamer.

• Assignee: Exxon Production Research Co., Houston, TX
• Patent Number(s): US 4624302
• OSTI ID: 7230481
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580203 -- Geophysics-- Geophysical Survey Methods-- (1980-1989)
BUBBLES
DATA ACQUISITION SYSTEMS
DISTANCE
GEOLOGIC DEPOSITS
GEOPHYSICAL SURVEYS
MARINE SURVEYS
MEASURING INSTRUMENTS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NOISE
PETROLEUM DEPOSITS
REFLECTION
REFRACTION
RESOURCES
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMIC SOURCES
SEISMIC SURVEYS
SEISMIC WAVES
SHIPS
SURVEYS