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Class Information
Number: 181/106
Name: Acoustics > Geophysical or subsurface exploration > Well logging > Seismic wave generation
Description: Subject matter including means for generating acoustical waves mechanically in the shaft.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7617908 |
Downhole seismic source |
Nov. 17, 2009 |
| 7578359 |
Downhole acoustic source |
Aug. 25, 2009 |
| 7539279 |
Logarithmic spectrum transmitter waveform for controlled-source electromagnetic surveying |
May. 26, 2009 |
| 7529151 |
Tube-wave seismic imaging |
May. 5, 2009 |
| 7460435 |
Acoustic transducers for tubulars |
Dec. 2, 2008 |
| 7420879 |
Device for seismic emission in an underground formation and method for implementing same |
Sep. 2, 2008 |
| RE40475 |
Source waveforms for electroseismic exploration |
Sep. 2, 2008 |
| 7414918 |
Method for normalizing signals in a cement bond logging tool |
Aug. 19, 2008 |
| 7382684 |
Method for selective bandlimited data acquisition in subsurface formations |
Jun. 3, 2008 |
| 7336562 |
Sonic logging tool including receiver and spacer structure |
Feb. 26, 2008 |
| 7277358 |
Apparatus, method and system for digitally transmitting acoustic pulse gun signals |
Oct. 2, 2007 |
| 7228934 |
Acoustic generator for distance sounding with a firing mechanism independent of the pressure equilibration force |
Jun. 12, 2007 |
| 7216738 |
Acoustic stimulation method with axial driver actuating moment arms on tines |
May. 15, 2007 |
| 7216737 |
Acoustic isolator between downhole transmitters and receivers |
May. 15, 2007 |
| 7213681 |
Acoustic stimulation tool with axial driver actuating moment arms on tines |
May. 8, 2007 |
| 7182170 |
Gerotor and bearing system for whirling mass orbital vibrator |
Feb. 27, 2007 |
| 7178626 |
Method of seismic evaluation of subterranean strata |
Feb. 20, 2007 |
| 7104357 |
Device for generating focused elastic waves in a material medium such as underground, and method using same |
Sep. 12, 2006 |
| 7102961 |
Installation of seismic survey devices in shallow, low-angle boreholes |
Sep. 5, 2006 |
| 6985086 |
Method and apparatus for LWD shear velocity measurement |
Jan. 10, 2006 |
| 6985815 |
Instantaneous spectral analysis |
Jan. 10, 2006 |
| 6930616 |
Method and apparatus for LWD shear velocity measurement |
Aug. 16, 2005 |
| 6909666 |
Method and apparatus for generating acoustic signals for LWD shear velocity measurement |
Jun. 21, 2005 |
| 6850168 |
Method and apparatus for LWD shear velocity measurement |
Feb. 1, 2005 |
| 6837332 |
Method and apparatus for cancellation of unwanted signals in MWD acoustic tools |
Jan. 4, 2005 |
| 6834743 |
Wideband isolator for acoustic tools |
Dec. 28, 2004 |
| 6820716 |
Acoustic isolator for well logging system |
Nov. 23, 2004 |
| 6795373 |
Permanent downhole resonant source |
Sep. 21, 2004 |
| 6747914 |
Use of minor borehole obstructions as seismic sources |
Jun. 8, 2004 |
| 6705425 |
Regenerative combustion device |
Mar. 16, 2004 |
| 6671224 |
Active reduction of tool borne noise in a sonic logging tool |
Dec. 30, 2003 |
| 6664788 |
Nonlinear electroseismic exploration |
Dec. 16, 2003 |
| 6661737 |
Acoustic logging tool having programmable source waveforms |
Dec. 9, 2003 |
| 6619423 |
Measuring device for measuring the elastic properties of a surface structure |
Sep. 16, 2003 |
| 6595285 |
Method and device for emitting radial seismic waves in a material medium by electromagnetic induction |
Jul. 22, 2003 |
| 6588267 |
Isolator bar for acoustic instruments used in downhole formations |
Jul. 8, 2003 |
| 6561310 |
Method and apparatus for measuring seismic energy imparted to the earth |
May. 13, 2003 |
| 6494288 |
Acoustic logging tool |
Dec. 17, 2002 |
| 6478107 |
Axially extended downhole seismic source |
Nov. 12, 2002 |
| 6480118 |
Method of drilling in response to looking ahead of drill bit |
Nov. 12, 2002 |
| 6477113 |
Source waveforms for electroseismic exploration |
Nov. 5, 2002 |
| 6419044 |
Energy source for use in seismic acquisitions |
Jul. 16, 2002 |
| 6394221 |
Swept impact seismic technique and apparatus |
May. 28, 2002 |
| 6262941 |
Method and device for seismic prospecting using a drilling tool acting in a well |
Jul. 17, 2001 |
| 6215734 |
Electrohydraulic pressure wave projectors |
Apr. 10, 2001 |
| 6196350 |
Apparatus and method for attenuating tube waves in a borehole |
Mar. 6, 2001 |
| 6193010 |
System for generating a seismic signal in a borehole |
Feb. 27, 2001 |
| 6179084 |
Underground acoustic wave transmitter, receiver, transmitting/receiving method, and underground exploration using this |
Jan. 30, 2001 |
| 6173803 |
High amplitude sound wave generator |
Jan. 16, 2001 |
| 6147929 |
Method for predicting continuous and discontinuous waveguide targets using interwell seismic signature characteristics |
Nov. 14, 2000 |
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