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Class Information
Number: 250/253
Name: Radiant energy > Geological testing or irradiation
Description: Subject matter s which includes means in combination with material within or on the surface of the earth to, (1) expose the material to radiation, (2) to detect radiation emanating naturally from the material or (3) to detect radiation modified or caused by the material interacting with radiation produced by the means to expose the material to radiation, and methods therefor.

Sub-classes under this class:

Class Number Class Name Patents
250/256 Well testing apparatus and methods 228
250/254 With drill or drilling 102
250/255 With sampling 208

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8618472 Downhole carbon logging apparatus, systems, and methods Dec. 31, 2013
8614578 Attenuation of electromagnetic signals passing through conductive material Dec. 24, 2013
8586913 Fluidic density measurements based on beta particles detection Nov. 19, 2013
8575541 Systems and methods for real time monitoring and management of wellbore servicing fluids Nov. 5, 2013
8546749 Intrinsic radioactivity in a scintillator as count rate reference Oct. 1, 2013
8536517 Scintillator based radiation detection Sep. 17, 2013
8481919 Apparatus and method for controllable downhole production of ionizing radiation without the use of radioactive chemical isotopes Jul. 9, 2013
8421004 Nuclear detectors built directly into shielding or modulating material Apr. 16, 2013
8399849 Fast neutron detector Mar. 19, 2013
8395119 Airborne/spaceborne oil spill determining system Mar. 12, 2013
8299420 Neutron shielding for downhole tool Oct. 30, 2012
8269161 Apparatus and method for evaluating downhole fluids Sep. 18, 2012
8153959 Measurement of undisturbed radon ground surface flux using a passive radon surface flux monitor Apr. 10, 2012
8129318 Methods and compositions for determination of fracture geometry in subterranean formations Mar. 6, 2012
8082103 CO.sub.2 concentration correcting apparatus and CO.sub.2 concentration correcting method Dec. 20, 2011
8076634 Neutron shielding for downhole tool Dec. 13, 2011
8055446 Methods of processing magnetotelluric signals Nov. 8, 2011
8017910 Method for predicting hydrocarbon process stream stability using near infrared spectra Sep. 13, 2011
7933718 Method and tool for determination of fracture geometry in subterranean formations based on in-situ neutron activation analysis Apr. 26, 2011
7908174 Animal identification band generator apparatus and method Mar. 15, 2011
7902495 Method and apparatus for radiation detection in a high temperature environment Mar. 8, 2011
7894577 Method for downhole, non-isotopic generation of ionised radiation and an apparatus for use when practising the method Feb. 22, 2011
7872222 Nuclear density gauge Jan. 18, 2011
7814036 Processing well logging data with neural network Oct. 12, 2010
7800051 Apparatus and method for monitoring snow water equivalent and soil moisture content using natural gamma radiation Sep. 21, 2010
7705294 Method of visualizing target objects in a fluid-carrying pipe Apr. 27, 2010
7605366 Nuclear density gauge Oct. 20, 2009
7567869 Induction tool for detail evaluation of near borehole zone Jul. 28, 2009
7529627 Method of sea electrical survey of oil and gas deposits and apparatus complex for its realization `VeSoTEM` May. 5, 2009
7528949 Aerial-supported procedure for exploration of hydrocarbon deposits May. 5, 2009
7498964 Analog interface for digital instrumentation Mar. 3, 2009
7488934 Geological tomography using cosmic rays Feb. 10, 2009
7439494 Method and apparatus for determining the thermal neutron capture cross-section of a subsurface formation from a borehole Oct. 21, 2008
7425307 Enhanced subsurface scanning system, method and computer program product Sep. 16, 2008
7402796 Method and apparatus for monitoring deposition of solids in pipelines using a plurality of radiation sources pointing to a unique detector Jul. 22, 2008
7365544 Methods of adjusting airborne geophysical measurements based on mapping instrument measurements Apr. 29, 2008
7321123 Method and apparatus for radiation detection in a high temperature environment Jan. 22, 2008
7317185 Tamper resistant radon detector Jan. 8, 2008
7282704 Method for determining formation porosity and gas saturation in a gas reservoir Oct. 16, 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
7235780 Method and system for detecting a property of a pavement by measuring gamma-radiation Jun. 26, 2007
7173239 Method and apparatus for downhole quantification of methane using near infrared spectroscopy Feb. 6, 2007
7081616 Downhole gamma-ray detection Jul. 25, 2006
7054759 Concentration measuring method May. 30, 2006
7027924 Detecting natural gas pipeline failures Apr. 11, 2006
7022998 Radiation dose rate measurement Apr. 4, 2006
6989527 Method, system and computer program product for collecting and storing radiation and position data Jan. 24, 2006
6853937 Soil characteristics survey device and soil characteristics survey method Feb. 8, 2005
6744055 Miniature personal and area radon and thoron monitor Jun. 1, 2004
6721681 Chronometric, communication, identification, and tracking tag Apr. 13, 2004

1 2 3 4 5 6

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