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Class Information
Number: 367/27
Name: Communications, electrical: acoustic wave systems and devices > Seismic prospecting > Well logging > Time interval measurement
Description: Subject matter wherein the time interval between the transmission and detection of an acoustic wave is used to determine some characteristic of the acoustic medium (i.e., earth).










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8611183 Measuring standoff and borehole geometry Dec. 17, 2013
8457898 System and method for real-time quality control for downhole logging devices Jun. 4, 2013
8408355 Enclosures for containing transducers and electronics on a downhole tool Apr. 2, 2013
8407007 Anisotropic depth velocity model estimation above the receiver array in walkaway or 3D VSP data Mar. 26, 2013
8256565 Enclosures for containing transducers and electronics on a downhole tool Sep. 4, 2012
8219319 Workflow for petrophysical and geophysical formation evaluation of wireline and LWD log data Jul. 10, 2012
8073623 System and method for real-time quality control for downhole logging devices Dec. 6, 2011
8009510 Two way check shot and reverse VSP while drilling Aug. 30, 2011
7913806 Enclosures for containing transducers and electronics on a downhole tool Mar. 29, 2011
7889596 Method and a system for determining the position of a drill bit Feb. 15, 2011
7787327 Cement bond analysis Aug. 31, 2010
7764571 Vector 3-component 3-dimensional Kirchhoff prestack migration Jul. 27, 2010
7675813 Methods and systems for detecting arrivals of interest Mar. 9, 2010
7668042 Method for obtaining a seismic wavelet using seismic data and well logs in a deviated well Feb. 23, 2010
7668041 Apparatus and methods for acquiring seismic data while tripping Feb. 23, 2010
7558153 Radial profiling of slowness: methods and apparatus for near-wellbore alteration estimation Jul. 7, 2009
7542373 Vector 3-component 3-dimensional kirchhoff prestack migration Jun. 2, 2009
7529151 Tube-wave seismic imaging May. 5, 2009
7523002 Method and system for cause-effect time lapse analysis Apr. 21, 2009
7450469 Water velocity corrections Nov. 11, 2008
7423930 Methods and systems for detecting arrivals of interest Sep. 9, 2008
7405997 Method of accounting for wavelet stretch in seismic data Jul. 29, 2008
7317989 Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data Jan. 8, 2008
7196634 Systems for predicting earthquakes and methods of employing such systems Mar. 27, 2007
6920082 Method and apparatus for determining earth formation shear-wave transverse isotropy from borehole stoneley-wave measurements Jul. 19, 2005
6891777 Subsurface borehole evaluation and downhole tool position determination methods May. 10, 2005
6870482 Systems for predicting earthquakes and methods of employing such systems Mar. 22, 2005
6816435 Method for estimating the position of a drill Nov. 9, 2004
6788619 Concentrating seismic energy in a selected target point in an underground formation Sep. 7, 2004
6747915 Seismic imaging a subsurface formation Jun. 8, 2004
6748329 Acoustic signal processing method using array coherency Jun. 8, 2004
6618322 Method and apparatus for measuring acoustic mud velocity and acoustic caliper Sep. 9, 2003
6510389 Acoustic detection of stress-induced mechanical damage in a borehole wall Jan. 21, 2003
6366531 Method and apparatus for acoustic logging Apr. 2, 2002
6351991 Determining stress parameters of formations from multi-mode velocity data Mar. 5, 2002
6002339 Seismic synchronization system Dec. 14, 1999
5995447 System and method for processing acoustic signals to image behind reflective layers Nov. 30, 1999
5886255 Method and apparatus for monitoring mineral production Mar. 23, 1999
5737277 Method for computing borehole geometry from ultrasonic pulse echo data Apr. 7, 1998
5691475 Method for measuring the propagation velocity of ultrasonic acoustic waves through rock fragments Nov. 25, 1997
5648937 Method and apparatus for correlating geological structure horizons from velocity data to well observations Jul. 15, 1997
5644550 Method for logging behind casing Jul. 1, 1997
5638337 Method for computing borehole geometry from ultrasonic pulse echo data Jun. 10, 1997
5619475 Method of predicting mechanical failure in formation utilizing stress derivatives which measure formation nonlinearity Apr. 8, 1997
5544127 Borehole apparatus and methods for measuring formation velocities as a function of azimuth, and interpretation thereof Aug. 6, 1996
5475650 Measurement of nonlinear properties of formation using sonic borehole tool while changing pressure in borehole Dec. 12, 1995
5467320 Acoustic measuring method for borehole formation testing Nov. 14, 1995
5448916 Method and device for three dimensional measuring of surface Sep. 12, 1995
5450371 Statistical analysis of regional velocities Sep. 12, 1995
5398215 Identification of stress induced anisotropy in formations Mar. 14, 1995

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