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Class Information
Number: 324/323
Name: Electricity: measuring and testing > Of geophysical surface or subsurface in situ
Description: Subject matter relating to the determination of an electrical characteristic of the subsurface of the earth in situ.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620498 |
Automated borehole image interpretation |
Nov. 17, 2009 |
| 7612566 |
Method and apparatus for the use of multicomponent induction tool for geosteering and formation resistivity data interpretation in horizontal wells |
Nov. 3, 2009 |
| 7603158 |
Current density impedance imaging (CDII) |
Oct. 13, 2009 |
| 7567869 |
Induction tool for detail evaluation of near borehole zone |
Jul. 28, 2009 |
| 7565244 |
Method and system for removing effects of conductive casings and wellbore and surface heterogeneity in electromagnetic imaging surveys |
Jul. 21, 2009 |
| 7539279 |
Logarithmic spectrum transmitter waveform for controlled-source electromagnetic surveying |
May. 26, 2009 |
| 7474101 |
Method for combined transient and frequency domain electromagnetic measurements |
Jan. 6, 2009 |
| 7450053 |
Logging device with down-hole transceiver for operation in extreme temperatures |
Nov. 11, 2008 |
| 7439977 |
Method of displaying three-dimensional vector orientations on a two-dimensional surface |
Oct. 21, 2008 |
| RE40475 |
Source waveforms for electroseismic exploration |
Sep. 2, 2008 |
| 7411512 |
Tracking the geographic location of an animal |
Aug. 12, 2008 |
| 7298869 |
Multispectral data acquisition system and method |
Nov. 20, 2007 |
| 7248052 |
Electric power grid induced geophysical prospecting method and apparatus |
Jul. 24, 2007 |
| 7218244 |
Common interface architecture for horizontal directional drilling machines and walk-over guidance systems |
May. 15, 2007 |
| 7117093 |
Method, media, and signals for processing seismic data to obtain a velocity field |
Oct. 3, 2006 |
| 7106194 |
Method for metal object identification using a three-dimensional steerable magnetic field antenna |
Sep. 12, 2006 |
| 7088097 |
Method for fitting a sum of exponentials to experimental data by linearization using a numerical integration approximation, and its application to well log data |
Aug. 8, 2006 |
| 7071694 |
Magnet assembly of an MRI system with concentric annular ferromagnetic laminations |
Jul. 4, 2006 |
| 7042801 |
System for geophysical prospecting using induce electrokinetic effect |
May. 9, 2006 |
| 6972678 |
Wireless-based system and method for hull-based sensing |
Dec. 6, 2005 |
| 6969844 |
Multiple-axis linearly-propelled rotating sensor apparatus |
Nov. 29, 2005 |
| 6927698 |
Shuttle-in receiver for radio-imaging underground geologic structures |
Aug. 9, 2005 |
| 6891376 |
Method for attenuating conductive sonde mandrel effects in an electromagnetic induction well logging apparatus |
May. 10, 2005 |
| 6845936 |
Stable heli-borne vector platform for performing geophysical measurements |
Jan. 25, 2005 |
| 6714153 |
Device for electromagnetic detection of geological properties in a well |
Mar. 30, 2004 |
| 6697102 |
Bore hole camera with improved forward and side view illumination |
Feb. 24, 2004 |
| 6670813 |
Integrated borehole system for reservoir detection and monitoring |
Dec. 30, 2003 |
| 6664788 |
Nonlinear electroseismic exploration |
Dec. 16, 2003 |
| 6646440 |
Device for measuring shifts in mountains |
Nov. 11, 2003 |
| 6541975 |
Integrated borehole system for reservoir detection and monitoring |
Apr. 1, 2003 |
| 6505509 |
Apparatus and method for measuring the level of a fluid |
Jan. 14, 2003 |
| 6476608 |
Combining seismic waves with seismoelectrics to perform prospecting and measurements |
Nov. 5, 2002 |
| 6477113 |
Source waveforms for electroseismic exploration |
Nov. 5, 2002 |
| 6462549 |
Method and system for electroseismic monitoring of microseismicity |
Oct. 8, 2002 |
| 6452395 |
Enhanced detection method |
Sep. 17, 2002 |
| 6427532 |
Device for measuring a fill level of a liquid in a container |
Aug. 6, 2002 |
| 6392317 |
Annular wire harness for use in drill pipe |
May. 21, 2002 |
| 6393363 |
Method and apparatus for the measurement of the electrical resistivity of geologic formations employing modeling data |
May. 21, 2002 |
| 6380745 |
Electrical geophysical apparatus for determining the density of porous materials and establishing geo-electric constants of porous material |
Apr. 30, 2002 |
| 6307375 |
Seismic activity predictor in proximity with the earth including a dielectric for receiving precursor seismic electromagnetic waveforms |
Oct. 23, 2001 |
| 6225806 |
Electroseismic technique for measuring the properties of rocks surrounding a borehole |
May. 1, 2001 |
| 6100697 |
Seismic activity predictor in proximity with the earth including a dielectric for receiving precursor seismic electromagnetic waveforms |
Aug. 8, 2000 |
| 6049209 |
Axial resolution enhancement method for resistivity well logs which accounts for lateral variations in the resistivity of earth formations penetrated by a wellbore |
Apr. 11, 2000 |
| 6018244 |
Method for detecting diastrophism by detecting VHF radio waves reflected by the ionosphere |
Jan. 25, 2000 |
| 5999885 |
Method and apparatus for automatically identifying fault cuts in seismic data using a horizon time structure |
Dec. 7, 1999 |
| 5990809 |
Underwater surveying system |
Nov. 23, 1999 |
| 5963037 |
Method for generating a flow profile of a wellbore using resistivity logs |
Oct. 5, 1999 |
| 5939885 |
Well logging apparatus having a separate mounting member on which a plurality of antennas are located |
Aug. 17, 1999 |
| 5903153 |
Apparatus and method for detecting underground liquids |
May. 11, 1999 |
| 5877995 |
Geophysical prospecting |
Mar. 2, 1999 |
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