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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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Class Information
Number: 175/41
Name: Boring or penetrating the earth > With signaling, indicating, testing or measuring > Ray energy detection or measuring
Description: Subject matter comprising a step or means for detecting the presence of, or measuring the quantity or quality of invisible radiant energy rays, such as for example radioactive emanations or phosphorescence or fluorescence.










Patents under this class:

Patent Number Title Of Patent Date Issued
8392120 Method and tool for determination of fracture geometry in subterranean formations based on in-situ neutron activation analysis Mar. 5, 2013
8322462 Proximity detection system for deep wells Dec. 4, 2012
8220562 Proximity detection system for deep wells Jul. 17, 2012
8210280 Bit based formation evaluation using a gamma ray sensor Jul. 3, 2012
8113298 Wireline communication system for deep wells Feb. 14, 2012
7832501 Measurement ahead of the drilling bit by analysis of formation cuttings using ultraviolet light to detect the presence of oil or gas Nov. 16, 2010
7567869 Induction tool for detail evaluation of near borehole zone Jul. 28, 2009
7536262 Kalman filter approach to processing electromagnetic data May. 19, 2009
7350568 Logging a well Apr. 1, 2008
7347280 Establishing positions of locating field detectors and path mapping in underground boring tool applications Mar. 25, 2008
7178607 While drilling system and method Feb. 20, 2007
7080699 Wellbore communication system Jul. 25, 2006
7077200 Downhole light system and methods of use Jul. 18, 2006
7059404 Variable intensity memory gravel pack imaging apparatus and method Jun. 13, 2006
7021403 Method of establishing positions of locating field detectors and path mapping in underground boring tool applications Apr. 4, 2006
6907944 Apparatus and method for minimizing wear and wear related measurement error in a logging-while-drilling tool Jun. 21, 2005
6877559 Retrieving a sample of formation fluid in as cased hole Apr. 12, 2005
6868038 Seismic method of performing the time picking step Mar. 15, 2005
6814162 One cone bit with interchangeable cutting structures, a box-end connection, and integral sensory devices Nov. 9, 2004
6791469 Method of drilling in response to looking ahead of the bit Sep. 14, 2004
6648083 Method and apparatus for measuring mud and formation properties downhole Nov. 18, 2003
6516663 Downhole electromagnetic logging into place tool Feb. 11, 2003
6474152 Methods and apparatus for optically measuring fluid compressibility downhole Nov. 5, 2002
6242268 Homogeneous fluorassay methods employing fluorescent background rejection and water-soluble rare earth metal chelates Jun. 5, 2001
5842528 Method of drilling and completing wells Dec. 1, 1998
RE35790 System for drilling deviated boreholes May. 12, 1998
5667023 Method and apparatus for drilling and completing wells Sep. 16, 1997
5251708 Modular connector for measurement-while-drilling tool Oct. 12, 1993
5163521 System for drilling deviated boreholes Nov. 17, 1992
4691772 Process for obtaining permeability logs using radioactive drilling mud additives Sep. 8, 1987
4601353 Method for drilling drainholes within producing zone Jul. 22, 1986
4297699 Radar drill guidance system Oct. 27, 1981
4262964 System for detecting interfaces between mineral seams and the surrounding earth formations Apr. 21, 1981
4224988 Device for and method of sensing conditions in a well bore Sep. 30, 1980
4118623 Continuous quality control of mined hard and soft coals Oct. 3, 1978
4115688 Mining and drilling control of distance to the coal-shale interface - thorium measurement by gamma spectrometry Sep. 19, 1978











 
 
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