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Class Information
Number: 175/17
Name: Boring or penetrating the earth > With heating or cooling (1) within the bore, or (2) drilling fluid
Description: Process or apparatus comprising a step or means (1) for changing the temperature of a drilling fluid or (2) positively changing the temperature of all or a portion of a bore or boring equipment within the bore.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8622152 Down-the-hole drill hammer having a sliding exhaust check valve Jan. 7, 2014
8567500 Cooling apparatus and methods for use with downhole tools Oct. 29, 2013
8561718 System and method for the thermal conditioning of a fluid more particularly a drilling mud Oct. 22, 2013
8550182 Electromagnetic energy assisted drilling system and method Oct. 8, 2013
8529156 Bit adapter and tube return for vertizontal geothermal loop Sep. 10, 2013
8499854 Rotating control device, cool fluid circulation system and methods of operation Aug. 6, 2013
8433520 Job monitoring methods and apparatus for logging-while-drilling equipment Apr. 30, 2013
8360169 Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use Jan. 29, 2013
8312938 Vertizontal geothermal loop and installation method Nov. 20, 2012
8272455 Methods for forming wellbores in heated formations Sep. 25, 2012
8267195 Grave site thawing, softening and boring apparatus for vertical burial containers in frozen ground Sep. 18, 2012
8225882 Apparatus for boring holes in rock mass Jul. 24, 2012
8141656 Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use Mar. 27, 2012
8122950 Microwave-based downhole activation method for wellbore consolidation applications Feb. 28, 2012
8100195 Motor cooling radiators for use in downhole environments Jan. 24, 2012
8082105 Method and apparatus for measuring in-situ stress of rock using thermal crack Dec. 20, 2011
8074739 Sampling method and sampler for gas hydrates by hole bottom freezing Dec. 13, 2011
8060311 Job monitoring methods and apparatus for logging-while-drilling equipment Nov. 15, 2011
8006780 Method of attachment of a towing anchor to an iceberg Aug. 30, 2011
7912648 Method and apparatus for imaging bed boundaries using azimuthal propagation resistivity measurements Mar. 22, 2011
7841425 Drilling subsurface wellbores with cutting structures Nov. 30, 2010
7819205 Apparatus for the cooling of drilling liquids Oct. 26, 2010
7806173 Apparatus and methods to dissipate heat in a downhole tool Oct. 5, 2010
7681672 Cryogenic pulsejet and method of use Mar. 23, 2010
7546880 Extracting gas hydrates from marine sediments Jun. 16, 2009
7500528 Low temperature barrier wellbores formed using water flushing Mar. 10, 2009
7493965 Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use Feb. 24, 2009
7380605 Energy transfer loop apparatus and method of installation Jun. 3, 2008
7334637 Assembly and method for determining thermal properties of a formation and forming a liner Feb. 26, 2008
7036593 Cement heating tool for oil and gas well completion May. 2, 2006
6938707 Method and system for minimizing circulating fluid return losses during drilling of a well bore Sep. 6, 2005
6742603 Hydrothermal drilling method and system Jun. 1, 2004
6659204 Method and apparatus for recovering core samples under pressure Dec. 9, 2003
6591920 Moulten bath drilling method Jul. 15, 2003
6536526 Method for decreasing heat transfer from production tubing Mar. 25, 2003
6336408 Cooling system for downhole tools Jan. 8, 2002
6216804 Apparatus for recovering core samples under pressure Apr. 17, 2001
5964303 Process and a device for establishing drilling holes Oct. 12, 1999
5715895 Downhole drilling tool cooling system Feb. 10, 1998
5022470 Autonomous rapid thermal ice penetrating method and system Jun. 11, 1991
5016716 Tubing carried perforating gun with insulation jacket May. 21, 1991
4926949 Thermal shield for drilling motors May. 22, 1990
4834194 Method and apparatus for detection of volatile soil contaminants in situ May. 30, 1989
4809790 Device for sampling soils and retaining volatiles therein and method of using same Mar. 7, 1989
4753302 Valveless pneumatic hammer Jun. 28, 1988
4741405 Focused shock spark discharge drill using multiple electrodes May. 3, 1988
4640552 Method and apparatus for splitting ice masses Feb. 3, 1987
4516878 Tunnel constructing May. 14, 1985
4512421 Method for drilling coke oven top brick Apr. 23, 1985
4494749 Seal assemblies Jan. 22, 1985

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