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Class Information
Number: 702/8
Name: Data processing: measuring, calibrating, or testing > Measurement system in a specific environment > Earth science > Well logging or borehole study > By radiation (e.g., nuclear, gamma, x-ray)
Description: Subject matter comprising (a) means for irradiating the earth formation with rays containing radiation particles (i.e., alpha, beta, gamma, neutrons, photon, etc.) such as those in nuclear, gamma, X-ray, etc. and (b) means for detecting and processing resultant signals for logging measurements.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7424367 |
Method for predicting lithology and porosity from seismic reflection data |
Sep. 9, 2008 |
| 7366615 |
Methods and apparatus using both nuclear capture and inelastic spectroscopy in deriving elemental concentrations |
Apr. 29, 2008 |
| 7361887 |
Measurement of formation gas pressure in cased wellbores using pulsed neutron instrumentation |
Apr. 22, 2008 |
| 7334465 |
Integrated logging tool for borehole |
Feb. 26, 2008 |
| 7337066 |
System and method for automated baseline correction for Raman spectra |
Feb. 26, 2008 |
| 7328106 |
Method of correcting density logs for the presence of the casing |
Feb. 5, 2008 |
| 7292942 |
Measuring formation density through casing |
Nov. 6, 2007 |
| 7254486 |
Method and apparatus for shale bed detection in deviated and horizontal wellbores |
Aug. 7, 2007 |
| 7253402 |
Apparatus and method for determining thermal neutron capture cross section of a subsurface formation from a borehole using multiple detectors |
Aug. 7, 2007 |
| 7248963 |
Method and system for aircraft flow management |
Jul. 24, 2007 |
| 7194360 |
Method of determining radioactive nuclides |
Mar. 20, 2007 |
| 7117092 |
Pulsed-neutron formation density |
Oct. 3, 2006 |
| 7027924 |
Detecting natural gas pipeline failures |
Apr. 11, 2006 |
| 7006919 |
Real time continuous elemental measurement of bulk material |
Feb. 28, 2006 |
| 6957145 |
Methods for determining characteristics of earth formations |
Oct. 18, 2005 |
| 6944548 |
Formation evaluation through azimuthal measurements |
Sep. 13, 2005 |
| 6909969 |
Method of through-casing gas detection |
Jun. 21, 2005 |
| 6795792 |
Continuous flow method and system for placement of balancing fluid on a rotating device requiring dynamic balancing |
Sep. 21, 2004 |
| 6754586 |
Apparatus and methods for monitoring output from pulsed neutron sources |
Jun. 22, 2004 |
| 6751557 |
Rock classification method and apparatus |
Jun. 15, 2004 |
| 6738720 |
Apparatus and methods for measurement of density of materials using a neutron source and two spectrometers |
May. 18, 2004 |
| 6721661 |
Method of distinguishing types of geologic sedimentation |
Apr. 13, 2004 |
| 6718265 |
Petrophysical property estimation using an acoustic calibration relationship |
Apr. 6, 2004 |
| 6712140 |
3rd borehole radar antenna and algorithm, method and apparatus for subsurface surveys |
Mar. 30, 2004 |
| 6665616 |
Method for determining decay characteristics of multi-component downhole decay data |
Dec. 16, 2003 |
| 6646437 |
System and method for clay typing using NMR-based porosity modeling |
Nov. 11, 2003 |
| 6405143 |
Method and system for determining potential fields |
Jun. 11, 2002 |
| 6366859 |
Method of detecting breaks in logging signals relating to a region of a medium |
Apr. 2, 2002 |
| 6339717 |
Medical examination system, particularly a magnetic resonance system |
Jan. 15, 2002 |
| 6289283 |
Downhole tool data correction method and apparatus |
Sep. 11, 2001 |
| 6228664 |
Calibration method for radiation spectroscopy |
May. 8, 2001 |
| 6115671 |
Method for estimating rock petrophysical parameters using temperature modified NMR data |
Sep. 5, 2000 |
| 6088656 |
Method for interpreting carbonate reservoirs |
Jul. 11, 2000 |
| 6044326 |
Measuring borehole size |
Mar. 28, 2000 |
| 6032102 |
Method and apparatus for measuring well characteristics and formation properties |
Feb. 29, 2000 |
| 6032101 |
Methods for evaluating formations using NMR and other logs |
Feb. 29, 2000 |
| 6028307 |
Data acquisition and reduction method for multi-component flow |
Feb. 22, 2000 |
| 5874676 |
Method and apparatus for acoustically investigating a casing with a swept frequency pulse |
Feb. 23, 1999 |
| 5672867 |
Method for filtering gamma ray well logging tool response to enhance vertical detail while suppressing statistical noise |
Sep. 30, 1997 |
| 5619411 |
Enhanced vertical resolution processing of dual-spaced density tools |
Apr. 8, 1997 |
| 5536938 |
Pulsed neutron decay logging |
Jul. 16, 1996 |
| 5528495 |
Cadmium zinc telluride borehole detector |
Jun. 18, 1996 |
| 5506786 |
Cutting apparatus |
Apr. 9, 1996 |
| 5506769 |
Method for enhancing vertical resolution of nuclear well logging instruments |
Apr. 9, 1996 |
| 5457628 |
Method of interpretation of electrical dispersion data of porous media |
Oct. 10, 1995 |
| 5390115 |
Compensated gamma-gamma density sonde using three detectors |
Feb. 14, 1995 |
| 5377105 |
Enhanced vertical resolution processing of dual-spaced neutron and density tools |
Dec. 27, 1994 |
| 5369578 |
Method and apparatus for using non-linear spectral fitting procedures on gamma-ray spectral data |
Nov. 29, 1994 |
| 5350925 |
Methods for determining values for earth formation properties |
Sep. 27, 1994 |
| 5345077 |
Method and apparatus for producing a porosity log of a subsurface formation corrected for detector standoff |
Sep. 6, 1994 |
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