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Class Information
Number: 367/912
Name: Communications, electrical: acoustic wave systems and devices > Particular well-logging apparatus > Particular transducer
Description: Subject matter wherein the system uses a specific type of acoustic transducer to transmit and/or receive seismic waves.










Patents under this class:
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Patent Number Title Of Patent Date Issued
7954595 Lightweight inflatable borehole receiver unit for seismic testing Jun. 7, 2011
7841444 Seismic vibrator baseplate Nov. 30, 2010
6288975 Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors Sep. 11, 2001
6179084 Underground acoustic wave transmitter, receiver, transmitting/receiving method, and underground exploration using this Jan. 30, 2001
5841734 Rotating acoustic transducer head for cement bond evaluation tool Nov. 24, 1998
5640371 Method and apparatus for beam steering and bessel shading of conformal array Jun. 17, 1997
5635685 Electroacoustic transducer with mechanical impedance transformer Jun. 3, 1997
5615172 Autonomous data transmission apparatus Mar. 25, 1997
5586083 Turbo siren signal generator for measurement while drilling systems Dec. 17, 1996
5586084 Mud operated pulser Dec. 17, 1996
5553034 Differential pressure fluid density instrument Sep. 3, 1996
5387767 Transmitter for sonic logging-while-drilling Feb. 7, 1995
5357481 Borehole logging tool Oct. 18, 1994
5319610 Hydraulic acoustic wave generator system for drillstrings Jun. 7, 1994
5313025 Displacement amplified acoustic transmitter May. 17, 1994
5289433 Acoustic multi-mode wide-band logging device Feb. 22, 1994
5285023 Downhole hydraulic rotary seismic source Feb. 8, 1994
5283768 Borehole liquid acoustic wave transducer Feb. 1, 1994
5268537 Broadband resonant wave downhole seismic source Dec. 7, 1993
5248857 Apparatus for the acquisition of a seismic signal transmitted by a rotating drill bit Sep. 28, 1993
5214252 Logging method and device in well bores utilizing directional emission and/or reception means May. 25, 1993
5212353 Transducer system for use with borehole televiewer logging tool May. 18, 1993
5192948 Geophone borehole cable Mar. 9, 1993
5157392 Telemetry network for downhole multistation seismic recording tools Oct. 20, 1992
5142500 Non-destructive method of measuring physical characteristics of sediments Aug. 25, 1992
5119343 Transducers for acoustic logging tool Jun. 2, 1992
5115880 Piezoelectric seismic vibrator with hydraulic amplifier May. 26, 1992
5113966 Downhole hydraulic seismic generator May. 19, 1992
5105390 Acoustic measuring device Apr. 14, 1992
RE33837 Method and apparatus for acoustic well logging Mar. 3, 1992
5081391 Piezoelectric cylindrical transducer for producing or detecting asymmetrical vibrations Jan. 14, 1992
5069307 Acoustic signal transmitter for logging tools Dec. 3, 1991
5060751 Pneumatic wall-locking geophone system Oct. 29, 1991
5047992 Electromagnetically induced acoustic well logging Sep. 10, 1991
5044462 Focused planar transducer Sep. 3, 1991
5035297 Anti-bounce device for a mass striking a target element Jul. 30, 1991
5031719 Seismic sonde Jul. 16, 1991
5005665 Piezoelectric seismic vibration device and method Apr. 9, 1991
RE33472 Rod-type multipole source(for) and receiver for acoustic well logging Dec. 4, 1990
4960181 Method and device for improving the coefficient of transmission to geological formations of energy created by a well seismic source Oct. 2, 1990
4953136 Downhole seismic exploration device and apparatus Aug. 28, 1990
4949316 Acoustic logging tool transducers Aug. 14, 1990
4890687 Borehole acoustic transmitter Jan. 2, 1990
4874061 Downhole orbital seismic source Oct. 17, 1989
4873675 Method and apparatus for seismic exploration of strata surrounding a borehole Oct. 10, 1989
4869349 Flexcompressional acoustic transducer Sep. 26, 1989
4855963 Shear wave logging using acoustic multipole devices Aug. 8, 1989
4850449 Piezoelectric seismic vibration device and method Jul. 25, 1989
4834210 Apparatus for generating seismic waves May. 30, 1989
4796723 System for transmitting energy through an apparatus usable for subsoil prospection, lowered inside a well or drill hole Jan. 10, 1989

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