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Class Information
Number: 181/104
Name: Acoustics > Geophysical or subsurface exploration > Well logging > Directional source or detector
Description: Subject matter including means for sending, or receiving acoustical waves which is characterized by some quality that varies according to the relative bearing of the means.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8408355 Enclosures for containing transducers and electronics on a downhole tool Apr. 2, 2013
8261873 Electromagnetic linear drive source for logging-while-drilling/wireline acoustic applications Sep. 11, 2012
8261874 Attenuating out of band energy emitted from seismic sources Sep. 11, 2012
8256565 Enclosures for containing transducers and electronics on a downhole tool Sep. 4, 2012
8136625 Attenuating out of band energy emitted from seismic sources Mar. 20, 2012
8125848 Acoustic logging-while-drilling tools having a hexapole source configuration and associated logging methods Feb. 28, 2012
8116167 Method and system for generating a beam of acoustic energy from a borehole, and applications thereof Feb. 14, 2012
7954595 Lightweight inflatable borehole receiver unit for seismic testing Jun. 7, 2011
7913806 Enclosures for containing transducers and electronics on a downhole tool Mar. 29, 2011
7916578 Seismic wave generation systems and methods for cased wells Mar. 29, 2011
7839718 Device and method for generating a beam of acoustic energy from a borehole, and applications thereof Nov. 23, 2010
7755972 Borehole apparatus and methods for simultaneous multimode excitation and reception to determine elastic wave velocities, elastic modulii, degree of anisotropy and elastic symmetry configuratio Jul. 13, 2010
7646674 Borehole apparatus and methods for simultaneous multimode excitation and reception to determine elastic wave velocities, elastic modulii, degree of anisotropy and elastic symmetry configuratio Jan. 12, 2010
7626886 P-wave anisotropy determination using borehole measurements Dec. 1, 2009
7529150 Borehole apparatus and methods for simultaneous multimode excitation and reception to determine elastic wave velocities, elastic modulii, degree of anisotropy and elastic symmetry configuratio May. 5, 2009
7389828 Apparatus and method for mechanical caliper measurements during drilling and logging-while-drilling operations Jun. 24, 2008
7336562 Sonic logging tool including receiver and spacer structure Feb. 26, 2008
7325647 Mobile system for seismic emission with fixed coupling devices, and method therefor Feb. 5, 2008
7310285 Method for characterizing shear wave formation anisotropy Dec. 18, 2007
7210556 Method and apparatus for installing a sensor array May. 1, 2007
7104357 Device for generating focused elastic waves in a material medium such as underground, and method using same Sep. 12, 2006
6956791 Apparatus for receiving downhole acoustic signals Oct. 18, 2005
6868036 Oil well acoustic logging tool with baffles forming an acoustic waveguide Mar. 15, 2005
6868035 Method and apparatus for coupling seismic sensors to a borehole wall Mar. 15, 2005
6834743 Wideband isolator for acoustic tools Dec. 28, 2004
6814179 Seismic sensing apparatus and method with high-g shock isolation Nov. 9, 2004
6795373 Permanent downhole resonant source Sep. 21, 2004
6747914 Use of minor borehole obstructions as seismic sources Jun. 8, 2004
6739423 Acoustic logging tool May. 25, 2004
6714480 Determination of anisotropic moduli of earth formations Mar. 30, 2004
6678616 Method and tool for producing a formation velocity image data set Jan. 13, 2004
6619423 Measuring device for measuring the elastic properties of a surface structure Sep. 16, 2003
6564899 Method and apparatus for absorbing acoustic energy May. 20, 2003
6552962 Method and apparatus for acoustic logging Apr. 22, 2003
6478107 Axially extended downhole seismic source Nov. 12, 2002
6474439 Dipole logging tool Nov. 5, 2002
6419044 Energy source for use in seismic acquisitions Jul. 16, 2002
6412592 Electrically inclination compensated device for picking up elastic waves Jul. 2, 2002
6351214 Glass breakage detector Feb. 26, 2002
6227310 Method and apparatus for providing a magnetic direction reference May. 8, 2001
6213250 Transducer for acoustic logging Apr. 10, 2001
6176344 Method and system for determining the azimuth position and distance of a reflecting subsurface formation Jan. 23, 2001
6125079 System and method for providing dual distance transducers to image behind an acoustically reflective layer Sep. 26, 2000
6082484 Acoustic body wave dampener Jul. 4, 2000
6006855 Borehole seismic detector system employing stabilizers Dec. 28, 1999
5936913 Acoustic formation logging system with improved acoustic receiver Aug. 10, 1999
5877996 Transducer arrangement Mar. 2, 1999
5852262 Acoustic formation logging tool with improved transmitter Dec. 22, 1998
5841734 Rotating acoustic transducer head for cement bond evaluation tool Nov. 24, 1998
5763773 Rotating multi-parameter bond tool Jun. 9, 1998

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