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Class Information
Number: 181/119
Name: Acoustics > Geophysical or subsurface exploration > Seismic wave generation > Fluid means
Description: Subject matter wherein the seismic waves are generated by utilizing a fluid under pressure.










Sub-classes under this class:

Class Number Class Name Patents
181/120 Underwater 244


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8353383 Water motion powered seismic energy source and method for seismic surveying therewith Jan. 15, 2013
8261874 Attenuating out of band energy emitted from seismic sources Sep. 11, 2012
8136625 Attenuating out of band energy emitted from seismic sources Mar. 20, 2012
8061471 Seismic vibrator controlled by directly detecting base plate motion Nov. 22, 2011
7997179 Hybrid water cannon Aug. 16, 2011
7987943 Apparatus and method for generating a seismic source signal Aug. 2, 2011
7823689 Closed-loop downhole resonant source Nov. 2, 2010
7628248 Apparatus and method for generating a seismic source signal Dec. 8, 2009
7377357 Marine seismic acquisition method and apparatus May. 27, 2008
7175499 Method for creating controlled pressure release in a pneumatic device Feb. 13, 2007
7028807 Non-explosive acoustic source Apr. 18, 2006
6973993 Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same Dec. 13, 2005
6776255 Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same Aug. 17, 2004
6571906 Underwater sound mitigation system for explosive testing Jun. 3, 2003
6478107 Axially extended downhole seismic source Nov. 12, 2002
6076629 Low frequency flextensional acoustic source for underwater use Jun. 20, 2000
6076630 Acoustic energy system for marine operations Jun. 20, 2000
6041888 Low frequency flextensional acoustic source for underwater use Mar. 28, 2000
5991235 Seismic data imaging system Nov. 23, 1999
5834710 Acoustic pulse gun assembly Nov. 10, 1998
5491306 Mass oscillator having an adjustable gas spring Feb. 13, 1996
5467322 Water hammer driven vibrator Nov. 14, 1995
5459699 Method and apparatus for generating high energy acoustic pulses Oct. 17, 1995
5399816 Seismic source Mar. 21, 1995
5270985 Seismic pulse generation Dec. 14, 1993
5189263 Human-portable geophysical energy source Feb. 23, 1993
5160814 Hydraulically-actuated downhole seismic source Nov. 3, 1992
5063542 Piezoelectric transducer with displacement amplifier Nov. 5, 1991
5018598 Apparatus for generating seismic waves May. 28, 1991
4982811 Fluid driven torsional dipole seismic source Jan. 8, 1991
4959818 Apparatus for generating elliptically polarized shear waves Sep. 25, 1990
4871045 Telescoping tube omni-directional shear wave vibrator Oct. 3, 1989
4869338 Method for measuring acoustic impedance and dissipation of medium surrounding a borehole Sep. 26, 1989
4862990 Downhole seismic sources Sep. 5, 1989
4853907 Inclinable vibratory seismic source Aug. 1, 1989
RE32995 Variable cylinder hydraulic vibrator and control system Jul. 25, 1989
4815557 Down hole seismographic source Mar. 28, 1989
4796723 System for transmitting energy through an apparatus usable for subsoil prospection, lowered inside a well or drill hole Jan. 10, 1989
4785430 Hydraulic vibrator with wide dynamic range Nov. 15, 1988
4770269 Closed air system seismic wave generator Sep. 13, 1988
4766974 Seismic signal generator with a self-expanding vibrator support base Aug. 30, 1988
4754443 Airgun having shaft-bearing-guided shuttle and capable of fast repitition self-firing Jun. 28, 1988
4739859 Method and apparatus for reducing the stretch of an elastomeric diaphragm of a land seismic source Apr. 26, 1988
4722417 Seismic wave generation by a downhole source Feb. 2, 1988
4719607 Full wave field vibratory seismic source Jan. 12, 1988
4712641 Method and system for generating shear waves and compression waves in the earth for seismic surveying Dec. 15, 1987
4706231 Reaction mass acceleration feedback device Nov. 10, 1987
4700804 Seismic energy source Oct. 20, 1987
4699240 Device for applying pulsed radial stresses to the wall of a well Oct. 13, 1987
4691803 Projectile powered piston Sep. 8, 1987

1 2 3










 
 
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