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Class Information
Number: 367/911
Name: Communications, electrical: acoustic wave systems and devices > Particular well-logging apparatus
Description: Subject matter comprising wellhole data acquisition systems using specific logging apparatus.

Sub-classes under this class:

Class Number Class Name Patents
367/912 Particular transducer 72

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8441889 Self-stabilizing dynamic diaphragm for broad bandwidth acoustic energy source May. 14, 2013
8125848 Acoustic logging-while-drilling tools having a hexapole source configuration and associated logging methods Feb. 28, 2012
7694735 Sonde Apr. 13, 2010
7424928 Apparatus, system and method for flexibly coupling sensors to a downhole tool Sep. 16, 2008
7336562 Sonic logging tool including receiver and spacer structure Feb. 26, 2008
7263029 System and method for acquiring seismic and micro-seismic data in deviated wellbores Aug. 28, 2007
6985815 Instantaneous spectral analysis Jan. 10, 2006
6981550 Sonde Jan. 3, 2006
6951262 Method and apparatus for suppressing waves in a borehole Oct. 4, 2005
6868035 Method and apparatus for coupling seismic sensors to a borehole wall Mar. 15, 2005
6868036 Oil well acoustic logging tool with baffles forming an acoustic waveguide Mar. 15, 2005
6820716 Acoustic isolator for well logging system Nov. 23, 2004
6795373 Permanent downhole resonant source Sep. 21, 2004
6763899 Deformable blades for downhole applications in a wellbore Jul. 20, 2004
6739423 Acoustic logging tool May. 25, 2004
6672382 Downhole electrical power system Jan. 6, 2004
6643221 Structures and methods for damping tool waves particularly for acoustic logging tools Nov. 4, 2003
6201764 Apparatus and method for correcting for capacitance variations in hydrophones Mar. 13, 2001
6196350 Apparatus and method for attenuating tube waves in a borehole Mar. 6, 2001
6193010 System for generating a seismic signal in a borehole Feb. 27, 2001
6170601 Borehole seismic tool Jan. 9, 2001
6135234 Dual mode multiple-element resonant cavity piezoceramic borehole energy source Oct. 24, 2000
6021095 Method and apparatus for remote control of wellbore end devices Feb. 1, 2000
6006855 Borehole seismic detector system employing stabilizers Dec. 28, 1999
5995446 Method of conducting drilling operations using vertical seismic profiles Nov. 30, 1999
5936913 Acoustic formation logging system with improved acoustic receiver Aug. 10, 1999
5926437 Method and apparatus for seismic exploration Jul. 20, 1999
5841734 Rotating acoustic transducer head for cement bond evaluation tool Nov. 24, 1998
5740126 Turbo siren signal generator for measurement while drilling systems Apr. 14, 1998
5731550 Acoustic dipole well logging instrument Mar. 24, 1998
5728978 Acoustic isolator for acoustic well logging tool Mar. 17, 1998
5563846 Method and apparatus for well logging to obtain high-resolution seismic images of geological formations surrounding horizontal well bores Oct. 8, 1996
5555220 Slickline conveyed wellbore seismic receiver Sep. 10, 1996
5550785 Mobile seismic system of great length for wells Aug. 27, 1996
5550788 Method and system of analysis of the behavior of a drill string Aug. 27, 1996
5541889 Borehole fluid replacement means and method Jul. 30, 1996
5537364 Method and apparatus for conducting seismic surveys from a single well having both seismic sources and receivers deployed therein Jul. 16, 1996
5528556 Combination well logging device Jun. 18, 1996
5521337 Seismic profiling tool with variable source/receiver spacer May. 28, 1996
5510582 Acoustic attenuator, well logging apparatus and method of well logging Apr. 23, 1996
5438169 Apparatus and method for determining the quality of clamping of a borehole seismic sensor system to the wall of a wellbore Aug. 1, 1995
5387767 Transmitter for sonic logging-while-drilling Feb. 7, 1995
5325714 Steerable motor system with integrated formation evaluation logging capacity Jul. 5, 1994
5318129 Method and device for setting up sondes against the wall of a cased well Jun. 7, 1994
5309404 Receiver apparatus for use in logging while drilling May. 3, 1994
5302781 Sidewall contact temperature tool including knife edge sensors for cutting through mudcake and measuring formation temperature Apr. 12, 1994
5300929 Method for delineating an anomalous geologic structure Apr. 5, 1994
5289433 Acoustic multi-mode wide-band logging device Feb. 22, 1994
5285204 Coil tubing string and downhole generator Feb. 8, 1994
5268537 Broadband resonant wave downhole seismic source Dec. 7, 1993

1 2 3

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