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Class Information
Number: 250/256
Name: Radiant energy > Geological testing or irradiation > Well testing apparatus and methods
Description: Subject matter wherein the means to detect radiation emanating naturally from or modified or caused by the material interacting with radiation senses the material in or about a well and includes means to support for movement the means to detect natural radiation or radiation modified or caused by the interaction of the material with exposing radiation and includes methods corresponding to the apparatus.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7454292 |
Inverse-vector method for smoothing dips and azimuths |
Nov. 18, 2008 |
| 7439494 |
Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a borehole |
Oct. 21, 2008 |
| 7432500 |
Azimuthal binning of density and porosity data |
Oct. 7, 2008 |
| 7424367 |
Method for predicting lithology and porosity from seismic reflection data |
Sep. 9, 2008 |
| 7408645 |
Method and apparatus for a downhole spectrometer based on tunable optical filters |
Aug. 5, 2008 |
| 7362422 |
Method and apparatus for a downhole spectrometer based on electronically tunable optical filters |
Apr. 22, 2008 |
| 7321123 |
Method and apparatus for radiation detection in a high temperature environment |
Jan. 22, 2008 |
| 7282704 |
Method for determining formation porosity and gas saturation in a gas reservoir |
Oct. 16, 2007 |
| 7279677 |
Measuring wellbore diameter with an LWD instrument using compton and photoelectric effects |
Oct. 9, 2007 |
| 7276715 |
Method and apparatus for safely handling radioactive sources |
Oct. 2, 2007 |
| 7250606 |
Buried object evaluating method, underground resources evaluating method, underground waste evaluating method, underground preserved object evaluating method, stratum structure evaluating meth |
Jul. 31, 2007 |
| 7219729 |
Permanent downhole deployment of optical sensors |
May. 22, 2007 |
| 7217917 |
Natural gamma ray logging sub method and apparatus |
May. 15, 2007 |
| 7173239 |
Method and apparatus for downhole quantification of methane using near infrared spectroscopy |
Feb. 6, 2007 |
| 7142306 |
Optical probes and probe systems for monitoring fluid flow in a well |
Nov. 28, 2006 |
| 7105805 |
Apparatus and a method for characterizing multiphase effluents |
Sep. 12, 2006 |
| 7081616 |
Downhole gamma-ray detection |
Jul. 25, 2006 |
| 7019284 |
Ultraviolet emitting scintillators for oil detection |
Mar. 28, 2006 |
| 7008103 |
Method and apparatus for temperature sensing utilizing optical fiber |
Mar. 7, 2006 |
| 6985766 |
Apparatus and method for positioning medical treatment devices or treatment supporting devices |
Jan. 10, 2006 |
| 6956204 |
Determining fluid properties from fluid analyzer |
Oct. 18, 2005 |
| 6913079 |
Method and system for monitoring smart structures utilizing distributed optical sensors |
Jul. 5, 2005 |
| 6910803 |
Method and apparatus for temperature sensing utilizing Brillouin scattering in polarization maintaining optical fiber |
Jun. 28, 2005 |
| 6872937 |
Well logging apparatus with gadolinium optical interface |
Mar. 29, 2005 |
| 6847034 |
Downhole sensing with fiber in exterior annulus |
Jan. 25, 2005 |
| 6828547 |
Wellbores utilizing fiber optic-based sensors and operating devices |
Dec. 7, 2004 |
| 6825459 |
Dual compensated chlorine logging tool |
Nov. 30, 2004 |
| 6794652 |
Method and apparatus for a rigid backup light source for down-hole spectral analysis |
Sep. 21, 2004 |
| 6787758 |
Wellbores utilizing fiber optic-based sensors and operating devices |
Sep. 7, 2004 |
| 6777669 |
Scale monitor |
Aug. 17, 2004 |
| 6768104 |
Method and device for processing sheets |
Jul. 27, 2004 |
| 6686589 |
Fluid density monitor |
Feb. 3, 2004 |
| 6678050 |
In-situ detection and analysis of methane in coal bed methane formations with spectrometers |
Jan. 13, 2004 |
| 6670605 |
Method and apparatus for the down-hole characterization of formation fluids |
Dec. 30, 2003 |
| 6627873 |
Down hole gas analyzer method and apparatus |
Sep. 30, 2003 |
| 6552334 |
Wellbore caliper measurement method using measurements from a gamma-gamma density |
Apr. 22, 2003 |
| 6531694 |
Wellbores utilizing fiber optic-based sensors and operating devices |
Mar. 11, 2003 |
| 6501072 |
Methods and apparatus for determining precipitation onset pressure of asphaltenes |
Dec. 31, 2002 |
| 6498341 |
Method for characterizing ground water measurement points by distinguishing ground water from subterranean water accumulation |
Dec. 24, 2002 |
| 6465775 |
Method of detecting carbon dioxide in a downhole environment |
Oct. 15, 2002 |
| 6437326 |
Permanent optical sensor downhole fluid analysis systems |
Aug. 20, 2002 |
| 6388251 |
Optical probe for analysis of formation fluids |
May. 14, 2002 |
| 6300624 |
Radiation detector |
Oct. 9, 2001 |
| 6274865 |
Analysis of downhole OBM-contaminated formation fluid |
Aug. 14, 2001 |
| 6275645 |
Method of and apparatus for subsurface exploration |
Aug. 14, 2001 |
| 6268911 |
Monitoring of downhole parameters and tools utilizing fiber optics |
Jul. 31, 2001 |
| 6218662 |
Downhole carbon dioxide gas analyzer |
Apr. 17, 2001 |
| 6215120 |
Method for determining symmetry and direction properties of azimuthal gamma ray distributions |
Apr. 10, 2001 |
| 6140637 |
Method and apparatus for fluorescence logging |
Oct. 31, 2000 |
| 6057542 |
System for determining composition of radionuclides |
May. 2, 2000 |
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