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Class Information
Number: 702/7
Name: Data processing: measuring, calibrating, or testing > Measurement system in a specific environment > Earth science > Well logging or borehole study > By induction or resistivity logging tool
Description: Subject matter comprising means having transmitter and receiver coils or electrodes arranged for taking measurements, at various depth of the borehole, representing electrical characteristic of the earth formations or planar layers surrounding the borehole (e.g., conductivity, resistivity, dielectric constant).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7427862 |
Increasing the resolution of electromagnetic tools for resistivity evaluations in near borehole zones |
Sep. 23, 2008 |
| 7424365 |
Apparent dip angle calculation and image compression based on region of interest |
Sep. 9, 2008 |
| 7414391 |
Electromagnetic logging tool calibration system |
Aug. 19, 2008 |
| 7400977 |
Computing values for surveying a subterranean structure based on measurements according to different electromagnetic survey techniques |
Jul. 15, 2008 |
| 7398180 |
Vehicle technician time clock tool |
Jul. 8, 2008 |
| 7392137 |
Determination of formation anistrophy, dip and azimuth |
Jun. 24, 2008 |
| 7386430 |
Method of correcting triaxial induction arrays for borehole effect |
Jun. 10, 2008 |
| 7376514 |
Method for determining properties of earth formations using dielectric permittivity measurements |
May. 20, 2008 |
| 7376515 |
System and method for CSEM exploration in polar regions |
May. 20, 2008 |
| 7366616 |
Computer-based method for while-drilling modeling and visualization of layered subterranean earth formations |
Apr. 29, 2008 |
| 7363159 |
Method of determining resistivity and/or dielectric values of an earth formation as a function of position within the earth formation |
Apr. 22, 2008 |
| 7363160 |
Technique for determining properties of earth formations using dielectric permittivity measurements |
Apr. 22, 2008 |
| 7363161 |
Pore-scale geometric models for interpretation of downhole formation evaluation data |
Apr. 22, 2008 |
| 7359845 |
Method and system for predictive stratigraphy images |
Apr. 15, 2008 |
| 7359800 |
Determination of fracture orientation and length using multi-component and multi-array induction data |
Apr. 15, 2008 |
| 7356411 |
Method for acquiring and interpreting transient electromagnetic measurements |
Apr. 8, 2008 |
| 7336080 |
Method and apparatus for use of the real component of a magnetic field of multicomponent resistivity measurements |
Feb. 26, 2008 |
| 7333891 |
Correction of cross-component induction measurements for misalignment using comparison of the XY formation response |
Feb. 19, 2008 |
| 7333893 |
Method for spatially interpreting electromagnetic data using multiple frequencies |
Feb. 19, 2008 |
| 7324898 |
System and method for determining a more accurate resistivity model of a geological formation using time-lapse well logging data |
Jan. 29, 2008 |
| 7324899 |
Geophysical technique for mineral exploration and discrimination based on electromagnetic methods and associated systems |
Jan. 29, 2008 |
| 7317991 |
Multicomponent induction measurements in cross-bedded and weak anisotropy approximation |
Jan. 8, 2008 |
| 7313479 |
Method for real-time well-site interpretation of array resistivity log data in vertical and deviated wells |
Dec. 25, 2007 |
| 7302375 |
Simulation of processes, devices and circuits by a modified newton method |
Nov. 27, 2007 |
| 7299131 |
Induction resistivity imaging principles and devices in oil based mud |
Nov. 20, 2007 |
| 7295927 |
Determining water saturation for oil bearing thin-bedded formation having anisotropic resistivity |
Nov. 13, 2007 |
| 7295928 |
Enhancing the quality and resolution of an image generated from single or multiple sources |
Nov. 13, 2007 |
| 7286937 |
Estimating formation properties from downhole data |
Oct. 23, 2007 |
| 7277796 |
System and methods of characterizing a hydrocarbon reservoir |
Oct. 2, 2007 |
| 7274991 |
Geosteering in anisotropic formations using multicomponent induction measurements |
Sep. 25, 2007 |
| 7272503 |
Method and apparatus for measuring formation conductivities from within cased wellbores by combined measurement of casing current leakage and electromagnetic response |
Sep. 18, 2007 |
| 7269515 |
Geosteering in anisotropic formations using multicomponent induction measurements |
Sep. 11, 2007 |
| 7265552 |
Electromagnetic wave resistivity tool having a tilted antenna for geosteering within a desired payzone |
Sep. 4, 2007 |
| 7263443 |
Computing water saturation in laminated sand-shale when the shale are anisotropic |
Aug. 28, 2007 |
| 7260478 |
Method and device for determining the resistivity in a geological formation crossed by a cased well |
Aug. 21, 2007 |
| 7251567 |
Electronically calibrated beacon for a horizontal directional drilling machine |
Jul. 31, 2007 |
| 7209834 |
Method and apparatus for estimating distance to or from a geological target while drilling or logging |
Apr. 24, 2007 |
| 7171310 |
Method of estimating electrical parameters of an earth formation with a simplified measurement device model |
Jan. 30, 2007 |
| 7158048 |
Identically programmed intelligent electrodes for use in geoelectrical surveys |
Jan. 2, 2007 |
| 7157915 |
Combined characterization and inversion of reservoir parameters from nuclear, NMR and resistivity measurements |
Jan. 2, 2007 |
| 7138803 |
Electromagnetic wave resistivity tool having a tilted antenna for geosteering within a desired payzone |
Nov. 21, 2006 |
| 7133779 |
Automated borehole geology and petrophysics interpretation using image logs |
Nov. 7, 2006 |
| 7124029 |
Method for evaluating formation properties |
Oct. 17, 2006 |
| 7120566 |
Method for estimating changes in product life resulting from HALT using exponential acceleration model |
Oct. 10, 2006 |
| 7091877 |
Apparatus and methods for determining isotropic and anisotropic formation resistivity in the presence of invasion |
Aug. 15, 2006 |
| 7076370 |
Method for determining borehole corrections for well-logging tools |
Jul. 11, 2006 |
| 7062072 |
Methods of producing images of underground formations surrounding a borehole |
Jun. 13, 2006 |
| 7043370 |
Real time processing of multicomponent induction tool data in highly deviated and horizontal wells |
May. 9, 2006 |
| 7038455 |
Electromagnetic wave resistivity tool |
May. 2, 2006 |
| 7031839 |
Multi-frequency focusing for MWD resistivity tools |
Apr. 18, 2006 |
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