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Class Information
Number: 250/255
Name: Radiant energy > Geological testing or irradiation > With sampling
Description: Subject matter which additionally includes means to remove a portion of the material from the earth whereby the portion is subjected to (1) the means to detect natural radiation or (2) radiation modified or caused by the portion when irradiated by means to expose or (3) some other test.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7439494 |
Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a borehole |
Oct. 21, 2008 |
| 7312439 |
Radon progeny monitor |
Dec. 25, 2007 |
| 7214933 |
Method and apparatus for a downhole fluorescence spectrometer |
May. 8, 2007 |
| 7173239 |
Method and apparatus for downhole quantification of methane using near infrared spectroscopy |
Feb. 6, 2007 |
| 7095012 |
Methods and apparatus for determining chemical composition of reservoir fluids |
Aug. 22, 2006 |
| 7082185 |
Portable imaging system method and apparatus |
Jul. 25, 2006 |
| 7081615 |
Methods and apparatus for the downhole characterization of formation fluids |
Jul. 25, 2006 |
| 7028773 |
Assessing downhole WBM-contaminated connate water |
Apr. 18, 2006 |
| 6937939 |
Soil measuring instrument, soil measurement assisting device and method, recorded medium on which a program is recorded, recorded medium on which data is recorded, application amount controlle |
Aug. 30, 2005 |
| 6867413 |
High-flow rate, low-noise, gas sampling apparatus and methods for collecting and detecting particulate in a gas |
Mar. 15, 2005 |
| 6847033 |
Method and device for quickly and continually detecting changes in the concentration of radon gas that is dissolved in water |
Jan. 25, 2005 |
| 6781692 |
Method of monitoring the fabrication of thin film layers forming a DWDM filter |
Aug. 24, 2004 |
| 6744055 |
Miniature personal and area radon and thoron monitor |
Jun. 1, 2004 |
| 6715347 |
Apparatus and method for determining measures of the permeability of HC-bearing formations using fluorescence |
Apr. 6, 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 |
| 6588266 |
Monitoring of downhole parameters and tools utilizing fiber optics |
Jul. 8, 2003 |
| 6577697 |
Field analysis of geological samples using delayed neutron activation analysis |
Jun. 10, 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 |
| 6492641 |
Apparatus and method for gamma-ray determination of bulk density of samples |
Dec. 10, 2002 |
| 6474152 |
Methods and apparatus for optically measuring fluid compressibility downhole |
Nov. 5, 2002 |
| 6343507 |
Method to improve the quality of a formation fluid sample |
Feb. 5, 2002 |
| 6288400 |
Portable apparatus for the measurement of environmental radon and thoron |
Sep. 11, 2001 |
| 6275645 |
Method of and apparatus for subsurface exploration |
Aug. 14, 2001 |
| 6274865 |
Analysis of downhole OBM-contaminated formation fluid |
Aug. 14, 2001 |
| 6271518 |
Process for detecting and characterizing formation hydrocarbons |
Aug. 7, 2001 |
| 6232598 |
Process and devices for characterizing ground water measurement points by distinguishing ground water from subterranean water accumulation |
May. 15, 2001 |
| 6229312 |
Method and device for fast measurement of the resistivity index of solid samples such as rocks |
May. 8, 2001 |
| 6218662 |
Downhole carbon dioxide gas analyzer |
Apr. 17, 2001 |
| 6194216 |
Method for determination of amine-based additives in drilling fluid filtrates |
Feb. 27, 2001 |
| 6097027 |
Identifying oil columns |
Aug. 1, 2000 |
| 5952655 |
Ultra-high sensitivity radiation detection apparatus and method |
Sep. 14, 1999 |
| 5939717 |
Methods and apparatus for determining gas-oil ratio in a geological formation through the use of spectroscopy |
Aug. 17, 1999 |
| 5898374 |
Sump alarm with radon detection |
Apr. 27, 1999 |
| 5859430 |
Method and apparatus for the downhole compositional analysis of formation gases |
Jan. 12, 1999 |
| 5834628 |
Activity weighted particle size distribution system |
Nov. 10, 1998 |
| 5833395 |
Method for reducing the concentration of contaminating radioactive material in contaminated soil |
Nov. 10, 1998 |
| 5780850 |
API estimate using multiple fluorescence measurements |
Jul. 14, 1998 |
| 5729013 |
Wellbore infrared detection device and method |
Mar. 17, 1998 |
| 5686724 |
Method for determining oil content of an underground formation using wet cuttings |
Nov. 11, 1997 |
| 5656810 |
Method and apparatus for evaluating the composition of an oil sample |
Aug. 12, 1997 |
| 5571962 |
Method and apparatus for analyzing drill cuttings |
Nov. 5, 1996 |
| 5572020 |
Simplified radon testing package |
Nov. 5, 1996 |
| 5561516 |
Casingless down-hole for sealing an ablation volume and obtaining a sample for analysis |
Oct. 1, 1996 |
| 5557103 |
Method of analyzing drilling fluids |
Sep. 17, 1996 |
| 5543616 |
Identifying oil well sites |
Aug. 6, 1996 |
| 5461909 |
Oxygen activation method for quantitative water flow measurements within and behind well bore casing |
Oct. 31, 1995 |
| 5430291 |
X-ray CT measurement of fracture widths and fracture porosity in reservoir core material |
Jul. 4, 1995 |
| 5405584 |
Device for detecting adsorbed molecules |
Apr. 11, 1995 |
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