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Class Information
Number: 367/49
Name: Communications, electrical: acoustic wave systems and devices > Seismic prospecting > Land-reflection type > Signal analysis and/or correction > Frequency
Description: Subject matter wherein the distinction is made among the frequencies of the various signals or constituents thereof.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8639443 Microseismic event monitoring technical field Jan. 28, 2014
8509027 Continuous adaptive surface wave analysis for three-dimensional seismic data Aug. 13, 2013
8467266 Exploring a subsurface region that contains a target sector of interest Jun. 18, 2013
8456952 Curve-fitting technique for determining dispersion characteristics of guided elastic waves Jun. 4, 2013
8441891 Seismic data acquisition and processing quality control May. 14, 2013
8345509 System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole Jan. 1, 2013
8233350 Frequency shift reservoir localization Jul. 31, 2012
7991553 Method and system for removing effects of conductive casings and wellbore and surface heterogeneity in electromagnetic imaging surveys Aug. 2, 2011
7986588 Method for selective bandlimited data acquisition in subsurface formations Jul. 26, 2011
7821869 Methods of enhancing separation of primary reflection signals and noise in seismic data using radon transformations Oct. 26, 2010
7660200 Method for coherence-filtering of acoustic array signal Feb. 9, 2010
7599251 Method for selective bandlimited data acquisition in subsurface formations Oct. 6, 2009
7565244 Method and system for removing effects of conductive casings and wellbore and surface heterogeneity in electromagnetic imaging surveys Jul. 21, 2009
7525873 Seismic inversion of conditioned amplitude spectra Apr. 28, 2009
7515505 Method for continuous sweeping and separation of multiple seismic vibrators Apr. 7, 2009
7388811 Method for separating microseismic signals from seismic signals emitted by one or several sources Jun. 17, 2008
7366054 Tau-P filters for removal of noise from seismic data Apr. 29, 2008
7239578 Removal of noise from seismic data using radon transformations Jul. 3, 2007
6982927 Method for processing seismic data to identify anomalous absorption zones Jan. 3, 2006
6907349 Acoustic signal processing method using array coherency Jun. 14, 2005
6891776 Vibrator sweep shaping method May. 10, 2005
6757216 Method for post processing compensation of amplitude for misaligned and misstacked offset seismic data Jun. 29, 2004
6636816 Vector signal analysis method and apparatus therefor Oct. 21, 2003
6603707 Method of reducing harmonic noise in vibroseis operations Aug. 5, 2003
6553316 Method and system for synchronizing elements of a seismic device using a standard transmission network and an external time reference Apr. 22, 2003
6460024 Data-domain sampled network Oct. 1, 2002
6061299 Method of transmitting compressed seismic data May. 9, 2000
6052333 Method for seismic antenna illumination of subterranean feature for display and evaluation Apr. 18, 2000
6049509 Method of processing seismic data to obtain the travel time curve Apr. 11, 2000
6028820 Method for determining the presence of fluids in a subterranean formation Feb. 22, 2000
6018500 Radon moveout Jan. 25, 2000
6002641 Apparatus and method for planting seismic sensors Dec. 14, 1999
5999485 Method of distinguishing geological sequences and their boundaries Dec. 7, 1999
5970023 Reducing aliasing artifacts in seismic data processing using sharpened (TAU-P-Q) transforms Oct. 19, 1999
5901113 Inverse vertical seismic profiling using a measurement while drilling tool as a seismic source May. 4, 1999
5886255 Method and apparatus for monitoring mineral production Mar. 23, 1999
5781503 Method for attenuating surface wavetrains in seismic data Jul. 14, 1998
5774416 Method and device for attenuating water column reverberations using co-located hydrophones and geophones in ocean bottom seismic processing Jun. 30, 1998
5703833 One step inversion/separation scheme using a plurality of vibrator sources Dec. 30, 1997
5583826 Method of processing signals for geophysical prospecting, the method making use of an improved wave field extrapolation operator Dec. 10, 1996
5555218 Computation of Q-derived static corrections from seismic data Sep. 10, 1996
5550788 Method and system of analysis of the behavior of a drill string Aug. 27, 1996
5545858 Method for processing and interpreting wide band FM seismic signals Aug. 13, 1996
5521882 Measurement of formation characteristics using acoustic borehole tool having sources of different frequencies May. 28, 1996
5491669 Method for identifying and suppressing anomalous frequency components in seismic data Feb. 13, 1996
5426618 Method of high resolution and high SNR data acquisition for probing using pulse-compression Jun. 20, 1995
5414674 Resonant energy analysis method and apparatus for seismic data May. 9, 1995
5335208 Method for conducting multiple natural frequency seismic surveys Aug. 2, 1994
5305285 Method and apparatus for subsoil exploration including emission of a series of seismic impulses Apr. 19, 1994
5191526 Method for removing coherent noise from seismic data Mar. 2, 1993

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