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Class Information
Number: 367/36
Name: Communications, electrical: acoustic wave systems and devices > Seismic prospecting > Land-refraction type
Description: Subject matter wherein alterations in the paths of acoustic waves due to their passage through a discontinuity into a medium of different velocity are detected and used to represent characteristics or the location of the discontinuity.

Patents under this class:

Patent Number Title Of Patent Date Issued
8681589 Method and system for performing seismic surveys with a low frequency sweep Mar. 25, 2014
8391103 Method for accentuating specular and non-specular seismic events from within shallow subsurface rock formations Mar. 5, 2013
8077546 Method for monitoring a multi-layered system Dec. 13, 2011
7511625 Mine safety system Mar. 31, 2009
7042801 System for geophysical prospecting using induce electrokinetic effect May. 9, 2006
6081482 Semi-recursive imaging under complex velocity structures Jun. 27, 2000
5999486 Method for fracture detection using multicomponent seismic data Dec. 7, 1999
5946271 Calibration system for use in time lapse tomography Aug. 31, 1999
5774419 High speed point derivative microseismic detector Jun. 30, 1998
H1529 Method for wave equation velocity replacement of the low-velocity-layer in seismic data processing May. 7, 1996
5502687 Method for datumizing seismic data by forward modeling Mar. 26, 1996
5309405 Methods of employing vibrational energy in a borehole May. 3, 1994
5083297 Method of improving the seismic resolution of geologic structures Jan. 21, 1992
5073876 Geophysical exploration using near surface structure corrections developed from common endpoint gather stacked traces Dec. 17, 1991
4933913 Method of seismic surveying for resolving the effects of formation anisotropy in shear wave reflection seismic data Jun. 12, 1990
4903244 Multisource multireceiver method and system for geophysical exploration Feb. 20, 1990
4803666 Multisource multireceiver method and system for geophysical exploration Feb. 7, 1989
4789969 Method of measuring the anisotropy of propagation or reflection of a transverse wave, particularly a method of geophysical prospecting by measurement of the anisotropy of propagation or of ref Dec. 6, 1988
4751688 Downhole electromagnetic seismic source Jun. 14, 1988
4695984 Method for establishing a surface consistent correction for the effects of the low velocity layer in seismic data processing Sep. 22, 1987
4611685 Acoustic logging in low velocity formations Sep. 16, 1986
4581724 Method for determining source and receiver statics in marine seismic exploration Apr. 8, 1986
4528649 Exploration system for discovering deposits of ore, marker rock and/or economic minerals Jul. 9, 1985
4479205 Method of migrating seismic data without dependency on velocity Oct. 23, 1984
4415997 Method for determining source and receiver statics in marine seismic exploration Nov. 15, 1983
4402028 Protective relay methods and apparatus Aug. 30, 1983
4397005 Exploration system for enhancing the likelihood of the discovery of deposits of ore, marker rock and/or economic minerals Aug. 2, 1983
4393488 Exploration system and method of determining elastic parameters and subsurface shape of an earth formation so as to indicate likelihood of the formation being an ore, marker rock, economic min Jul. 12, 1983
4373197 Exploration system for enhancing the likelihood of predicting lithology of earth formations associated with deposits of ore, marker rock and/or economic minerals Feb. 8, 1983
4242740 Seismic refraction exploration Dec. 30, 1980
4232378 Formation absorption seismic method Nov. 4, 1980
4214226 System for plotting subsoil structure and method therefor Jul. 22, 1980
4207619 Seismic well logging system and method Jun. 10, 1980
4101867 Method of determining weathering corrections in seismic operations Jul. 18, 1978
4066992 Seismic mine monitoring system Jan. 3, 1978
3993974 Seismic method for determining the position of the bit on a drill stem in a deep borehole Nov. 23, 1976
3979724 Seismic method for determining the position of the bottom of a long pipe in a deep borehole Sep. 7, 1976
3949353 Underground mine surveillance system Apr. 6, 1976

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