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Class Information
Number: 367/43
Name: Communications, electrical: acoustic wave systems and devices > Seismic prospecting > Land-reflection type > Signal analysis and/or correction > Filters
Description: Subject matter including means to attenuate and/or separate selected signals or constituent parts of complex signals.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7564740 |
Methods of enhancing separation of primary reflection signals and noise in seismic data using radon transformations |
Jul. 21, 2009 |
| 7561491 |
Radon transformations for removal of noise from seismic data |
Jul. 14, 2009 |
| 7558154 |
Method of and apparatus for processing seismic data |
Jul. 7, 2009 |
| 7551515 |
Source signature deconvolution method |
Jun. 23, 2009 |
| 7508734 |
Method and apparatus for acoustic data transmission in a subterranean well |
Mar. 24, 2009 |
| 7447114 |
Non-linear seismic trace matching to well logs |
Nov. 4, 2008 |
| 7436734 |
Shaped high frequency vibratory source |
Oct. 14, 2008 |
| 7433265 |
Converted wave energy removal from seismic data |
Oct. 7, 2008 |
| 7382682 |
Processing seismic data |
Jun. 3, 2008 |
| 7382685 |
Method and apparatus for filtering irregularly sampled data |
Jun. 3, 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 |
| 6987706 |
Removal of noise from seismic data using high resolution radon transformations |
Jan. 17, 2006 |
| 6961283 |
Adaptive filtering apparatus and method for seismic data acquisition |
Nov. 1, 2005 |
| 6956790 |
Borehole sonic data processing method |
Oct. 18, 2005 |
| 6912467 |
Method for estimation of size and analysis of connectivity of bodies in 2- and 3-dimensional data |
Jun. 28, 2005 |
| 6882938 |
Method for separating seismic signals from two or more distinct sources |
Apr. 19, 2005 |
| 6856575 |
Monitoring a microseismic event |
Feb. 15, 2005 |
| 6836448 |
System and method for seismic wavefield separation |
Dec. 28, 2004 |
| RE38567 |
Apparatus and method for self adjusting downlink signal communication |
Aug. 24, 2004 |
| 6757217 |
Method for time-aligning multiple offset seismic data volumes |
Jun. 29, 2004 |
| 6691073 |
Adaptive state space signal separation, discrimination and recovery |
Feb. 10, 2004 |
| 6674689 |
Method for morphologic analysis of seismic objects |
Jan. 6, 2004 |
| 6636816 |
Vector signal analysis method and apparatus therefor |
Oct. 21, 2003 |
| 6418079 |
Method of reducing harmonic interference while using overlapping source point seismic recording techniques |
Jul. 9, 2002 |
| 6353577 |
Seismic sensor units |
Mar. 5, 2002 |
| 6201764 |
Apparatus and method for correcting for capacitance variations in hydrophones |
Mar. 13, 2001 |
| 6161076 |
Seismic data acquisition and processing using non-linear distortion in a vibratory output signal |
Dec. 12, 2000 |
| 6147928 |
Anti-noise component for flat cable |
Nov. 14, 2000 |
| 6091669 |
Method of determining, displaying and using the relative changes of elastic modulus and density of underground rock |
Jul. 18, 2000 |
| 6028823 |
Geodetic position estimation for underwater acoustic sensors |
Feb. 22, 2000 |
| 6018500 |
Radon moveout |
Jan. 25, 2000 |
| 5982706 |
Method and system for determining normal moveout parameters for long offset seismic survey signals |
Nov. 9, 1999 |
| 5971095 |
Noise filtering method for seismic data |
Oct. 26, 1999 |
| 5963138 |
Apparatus and method for self adjusting downlink signal communication |
Oct. 5, 1999 |
| 5831934 |
Signal processing method for improved acoustic formation logging system |
Nov. 3, 1998 |
| 5721710 |
High fidelity vibratory source seismic method with source separation |
Feb. 24, 1998 |
| 5719822 |
Seismic data radon dip moveout method |
Feb. 17, 1998 |
| 5594706 |
Downhole processing of sonic waveform information |
Jan. 14, 1997 |
| 5511008 |
Process and apparatus for extracting a useful signal having a finite spatial extension at all times and which is variable with time |
Apr. 23, 1996 |
| 5491669 |
Method for identifying and suppressing anomalous frequency components in seismic data |
Feb. 13, 1996 |
| 5400299 |
Seismic vibrator signature deconvolution |
Mar. 21, 1995 |
| 5384725 |
Method and apparatus for encoding and decoding using wavelet-packets |
Jan. 24, 1995 |
| 5287328 |
Method for removing random source and receiver noise from seismic traces |
Feb. 15, 1994 |
| 5274604 |
Method for spatially filtering signals representing formation and channel echoes in a borehole environment |
Dec. 28, 1993 |
| 5237538 |
Method for removing coherent noise from an array of seismic traces |
Aug. 17, 1993 |
| 5191557 |
Signal processing to enable utilization of a rig reference sensor with a drill bit seismic source |
Mar. 2, 1993 |
| 5182729 |
Reduction of sideswipe noise from seismic data by null steering |
Jan. 26, 1993 |
| 5182730 |
Method and apparatus for transmitting information in a borehole employing signal discrimination |
Jan. 26, 1993 |
| 5150333 |
Method and apparatus for providing improved pressure pulse characteristics for measuring while drilling |
Sep. 22, 1992 |
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