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Class Information
Number: 175/58
Name: Boring or penetrating the earth > Processes > Sampling of earth formations
Description: Processes comprising drilling a definite sample of earth from the borehole or from the surrounding earth formation for testing or measuring purposes.










Sub-classes under this class:

Class Number Class Name Patents
175/59 Retaining fluid or taking separate fluid sample 120
175/60 Transporting sample to surface by fluid 24


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8689903 Coring apparatus and methods Apr. 8, 2014
8684110 Sealed core Apr. 1, 2014
8668029 Sonic latch mechanism Mar. 11, 2014
8662204 Core barrel restraint Mar. 4, 2014
8622128 In-situ evaluation of reservoir sanding and fines migration and related completion, lift and surface facilities design Jan. 7, 2014
8616275 Groundwater evaluation tools and methods of groundwater evaluation Dec. 31, 2013
8579049 Drilling system for enhanced coring and method Nov. 12, 2013
8556001 Process for determining the presence and/or quantity of H.sub.2S in subsoil and related apparatus Oct. 15, 2013
8550184 Formation coring apparatus and methods Oct. 8, 2013
8538697 Core sample preparation, analysis, and virtual presentation Sep. 17, 2013
8499856 Small core generation and analysis at-bit as LWD tool Aug. 6, 2013
8485280 Core drilling tools with retractably lockable driven latch mechanisms Jul. 16, 2013
8479842 Garden auger Jul. 9, 2013
8459374 Easy open liners for soil samplers Jun. 11, 2013
8448703 Downhole formation tester apparatus and methods May. 28, 2013
8430186 Sealed core Apr. 30, 2013
8408298 Downhole fluid filter Apr. 2, 2013
8408332 Coring tool and method Apr. 2, 2013
8403042 Method and apparatus for use with downhole tools having gas-filled cavities Mar. 26, 2013
8365839 Substantially simultaneous core containment, core retrieval and borehole abatement Feb. 5, 2013
8323921 Method and apparatus for environmental monitoring and bioprospecting Dec. 4, 2012
8297376 Coring apparatus with sensors Oct. 30, 2012
8292004 Downhole marking apparatus and methods Oct. 23, 2012
8261857 Core barrel sonic latch mechanism and methods of sonic drilling using the same Sep. 11, 2012
8146684 Coring apparatus with sensors Apr. 3, 2012
8132452 Method for sampling fluid from a well with a gas trap Mar. 13, 2012
8127864 Hydro-percussive mechanisms for drilling systems Mar. 6, 2012
8122956 Magnetic stirrer Feb. 28, 2012
8122976 Valve, core sampling apparatus and method Feb. 28, 2012
8113280 Formation tester tool assembly Feb. 14, 2012
8109347 Core catcher and corer having it Feb. 7, 2012
8061446 Coring tool and method Nov. 22, 2011
8061442 Method to detect formation pore pressure from resistivity measurements ahead of the bit during drilling of a well Nov. 22, 2011
8025107 Reamer with polycrystalline diamond compact inserts Sep. 27, 2011
8020636 Method and apparatus for introducing a geothermal probe into the earth Sep. 20, 2011
8024123 Subterranean formation properties prediction Sep. 20, 2011
8011454 Apparatus and methods for continuous tomography of cores Sep. 6, 2011
7997341 Downhole fluid filter Aug. 16, 2011
7996154 Methods and apparatus for analysis of downhole asphaltene gradients and applications thereof Aug. 9, 2011
7967085 Braking devices for use in drilling operations Jun. 28, 2011
7958936 Downhole formation sampling Jun. 14, 2011
7934568 Rock core removal method and apparatus May. 3, 2011
7918287 Suction coring device and method Apr. 5, 2011
7913775 Subsurface formation core acquisition system using high speed data and control telemetry Mar. 29, 2011
7878269 Monitoring apparatus for core barrel operations Feb. 1, 2011
7861801 Method to detect coring point from resistivity measurements Jan. 4, 2011
7822554 Methods and apparatus for analysis of downhole compositional gradients and applications thereof Oct. 26, 2010
7784564 Method to perform operations in a wellbore using downhole tools having movable sections Aug. 31, 2010
7681662 Water bottom ore sampler and method of using the same Mar. 23, 2010
7673704 Variable positioning deep cutting rotary coring tool with expandable bit Mar. 9, 2010

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