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| Number | Title | Issue Date |
| 8141656 | Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use One aspect of the instant disclosure relates to a subterranean drilling assembly comprising a subterranean drill bit and a sub apparatus coupled to the drill bit. Further, the sub apparatus may include at least one cooling system configured to cool at least a portio... | 03/27/2012 |
| 8100195 | Motor cooling radiators for use in downhole environments Example motor cooling radiators for use in downhole environments are disclosed. A disclosed example radiator comprises a cylindrical housing having an annular passageway. The housing defines an inlet at a first end of the housing and an outlet at a second opposite e... | 01/24/2012 |
| 8074739 | Sampling method and sampler for gas hydrates by hole bottom freezing The present invention relates to a sampler for gas hydrates by hole bottom freezing, the sampler comprises a fisher, a wire-line coring mechanism and an outer barrel, and it further comprises a refrigeration portion, a low temperature control portion and a frozen in... | 12/13/2011 |
| 8006780 | Method of attachment of a towing anchor to an iceberg A drilling bit for penetrating an iceberg a predetermined distance to establish an anchor point for towing the iceberg to a predetermined location. The drilling bit has three sections for achieving its goal. It has a cutting head, a torque transmission body and a dr... | 08/30/2011 |
| 7819205 | Apparatus for the cooling of drilling liquids Method and apparatus for the cooling of drilling fluids (also referred to as mudcooler), includes use of two heat exchangers, wherein the drilling fluid (or warm drilling oil) is led through the first heat exchanger and is cooled by a mixture of glycol and water, wh... | 10/26/2010 |
| 7500528 | Low temperature barrier wellbores formed using water flushing A method of forming an opening for a low temperature well is described. The method includes drilling an opening in a formation. Water is introduced into the opening to displace drilling fluid or indigenous gas in the formation adjacent to a portion of the opening. W... | 03/10/2009 |
| 7493965 | Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use One aspect of the instant disclosure relates to a subterranean drilling assembly comprising a subterranean drill bit and a sub apparatus coupled to the drill bit. Further, the sub apparatus may include at least one cooling system configured to cool at least a portio... | 02/24/2009 |
| 7380605 | Energy transfer loop apparatus and method of installation A method of forming an energy transfer loop in the earth has the steps of connecting a tubing to a nose member, extending a liquid delivery pipe to the nose member, pumping a liquid through the liquid delivery pipe to the nose member, jetting the liquid from the nos... | 06/03/2008 |
| 7341659 | Rinsing liquid treatment device A modular assembly for a rinsing liquid treatment device (2) includes an expansion module (12) and an adapter module (9) for a rinsing liquid circuit for a rock working tool (1) and having a feed line (3), a catch trough (4)... | 03/11/2008 |
| 7334637 | Assembly and method for determining thermal properties of a formation and forming a liner A method comprises heating a formation adjacent a selected depth level within a wellbore extending into the formation, forming a temporary liner in the wellbore, measuring a first temperature of the formation at the selected depth level at a first time after heating... | 02/26/2008 |
| 7318489 | Hydraulic motor arrangement and method of operating a hydraulic motor A hydraulic motor for use in subterranean drilling operations in which a drive fluid within a first reservoir is forced through the motor by a high pressure working fluid, such as drilling mud, the drive fluid entering a second reservoir upon exiting the motor. Upon... | 01/15/2008 |
| 7168507 | Recalibration of downhole sensors In downhole drilling tools, a first set of inexpensive and/or relatively small sensors that typically have lower accuracy and higher drift than conventional downhole sensors are located in the drill string adjacent to the bit. A second set of highly accurate sensors... | 01/30/2007 |
| 7082998 | Systems and methods for placing a braided, tubular sleeve in a well bore Systems and methods for placing a tubular, braided sleeve in a well bore. The sleeve is positioned within an interior of a carrier configured to hold the sleeve in an undeployed position, followed by lowering the carrier into the well bore. The sleeve may be used in... | 08/01/2006 |
| 7063142 | Method of applying an axial force to an expansion cone A method of applying an axial force to a first piston positioned within a first piston chamber including applying an axial force to the first piston using a second piston positioned within the first piston chamber. ... | 06/20/2006 |
| 7044221 | Apparatus for coupling a tubular member to a preexisting structure An apparatus for coupling a tubular member to a preexisting structure. ... | 05/16/2006 |
| 7040396 | Apparatus for releasably coupling two elements An apparatus for coupling two elements including an outer tubular member defining one or more outer tubular member slots, an inner tubular member defining one or more inner tubular member slots positioned within the outer tubular member, and a coupling assembly for ... | 05/09/2006 |
| 7036593 | Cement heating tool for oil and gas well completion Apparatus and method for setting cement in the annulus of an oil or gas well during well completion or other similar well operations. An induction heating tool is lowered to a desired position within the well casing and power is supplied to the tool to heat the casi... | 05/02/2006 |
| 6966370 | Apparatus for actuating an annular piston An apparatus comprising a first tubular member; a second tubular member positioned within and coupled to the first tubular member; a first annular piston chamber defined by the space between the first and second tubular members; an annular piston movably coupled to ... | 11/22/2005 |
| 6959245 | Soil and topography surveying Methods of characterizing subsurface conditions in a selected geographic region previously associated as a whole with a specific subsurface material characteristic reference profile such as from a USDA-NRCS soil survey. The method includes deploying a sensing tool a... | 10/25/2005 |
| 6938707 | Method and system for minimizing circulating fluid return losses during drilling of a well bore A method and a system for minimizing circulating fluid return losses during drilling of a well bore are disclosed. Circulating fluid, or mud, is heated above conventional temperatures for circulating fluids. The heated circulating fluid then contacts a region of a f... | 09/06/2005 |
| 6742603 | Hydrothermal drilling method and system A method and system is disclosed for extending the depth of a subterranean borehole that uses heated aqueous fluid to dissolve rock of the subterranean formation. The heated aqueous fluid comprises water and hydroxides of Group I elements of The Periodic Table of El... | 06/01/2004 |
| 6659204 | Method and apparatus for recovering core samples under pressure A pressure and temperature core sampler comprises a tool for recovering cores specifically enabling the evaluation of methane hydrate resources. Because methane hydrate tends to decompose under conditions of pressure decrease and/or temperature increase a... | 12/09/2003 |
| 6591920 | Moulten bath drilling method A fusion drilling process and device for the placement of dimensionally accurate borings, particularly those of large diameter, in rock, in which the waste melt is pressed into the surrounding rock, which is cracked due to the effect of temperature and pr... | 07/15/2003 |
| 6536526 | Method for decreasing heat transfer from production tubing A method for retarding temperature loss of fluid being produced in a well employs a fluid of low thermal conductivity in the tubing annulus. The tubing annulus extends between the production casing and the production tubing. It extends from a packer at th... | 03/25/2003 |
| 6336408 | Cooling system for downhole tools Apparatus and method for cooling a component inside a tool includes a container and a plurality of heat sinks positioned in the container. The components are positioned in the container with the heat sinks for maintaining a reduced temperature inside the ... | 01/08/2002 |
| 6216804 | Apparatus for recovering core samples under pressure A pressure and temperature core sampler comprises a tool for recovering cores specifically enabling the evaluation of methane hydrate resources. Because methane hydrate tends to decompose under conditions of pressure decrease and/or temperature increase a... | 04/17/2001 |
| 5964303 | Process and a device for establishing drilling holes The description relates to a process and a device for drilling holes in hard rocks like granite, in which the rock to be drilled is exposed to a flame produced by gaseous hydrogen and fluorine together and the reaction products produced by the flame are t... | 10/12/1999 |
| 5715895 | Downhole drilling tool cooling system A dual walled pipe string structure defines an annular cavity between the walls into which hard granules may be packed to oppose wall collapse when inserted to high pressure well depths. Segments of pipe thus constructed will reduce the heat transfer acro... | 02/10/1998 |
| 5022470 | Autonomous rapid thermal ice penetrating method and system An autonomous ice penetrator/payload delivery system is provided which, when once launched from its parent vehicle will, upon reaching the surface of the ice automatically right itself to proper orientation with respect to the ice surface for penetration.... | 06/11/1991 |
| 5016716 | Tubing carried perforating gun with insulation jacket An insulation jacket and method are provided for a tubing carried perforating gun for a subterranean well. A tubular housing is secured at one end to a tubular conduit with a firing head disposed interiorly within the housing. A perforating gun is activat... | 05/21/1991 |
| 4926949 | Thermal shield for drilling motors A thermal jacket shield for a drilling motor which permits drilling operations in high temperature wells without failure of the motor. The thermal shield includes a multiple passageway casing to shroud the motor and through which is circulated drilling fl... | 05/22/1990 |
| 4834194 | Method and apparatus for detection of volatile soil contaminants in situ The invention relates to methods and apparatus for agitating and heating a sub-surface volume of soil to liberate volatile compositions therefrom which are transmitted through a special flow passage created through the soil to the soil surface where they ... | 05/30/1989 |
| 4809790 | Device for sampling soils and retaining volatiles therein and method of using same A device for extracting an undisturbed sample of soil to be tested from a subsurface location uses a cutter to remove unwanted soil from above the undisturbed sample. The device is particularly intended for extraction of soil from contaminated areas witho... | 03/07/1989 |
| 4753302 | Valveless pneumatic hammer A valveless pneumatic hammer comprising a backhead assembly at one end of a hollow casing and a bit assembly at the other end of the casing, a rod extending into the casing and having a passage out to atmosphere at the other end of the assembly, a chamber... | 06/28/1988 |
| 4741405 | Focused shock spark discharge drill using multiple electrodes A spark discharge focused drill provided with one pulse forming line or a number of pulse forming lines. The pulse forming line is connected to an array of electrodes which would form a spark array. One of the electrodes of each of the array is connected ... | 05/03/1988 |
| 4640552 | Method and apparatus for splitting ice masses A method and apparatus is disclosed for breaking apart large masses of ice wherein a borehole is drilled into a mass of ice, the hole is blocked and pressurized to split the ice mass.... | 02/03/1987 |
| 4516878 | Tunnel constructing Tunnels are constructed by freezing soil and removing frozen soil between starting and end shafts of the tunnels. Tunnels are driven in an uncomplicated manner in rapidly changing soils without auxiliary construction means. A hole is bored in or near the ... | 05/14/1985 |
| 4512421 | Method for drilling coke oven top brick An apparatus for drilling vertical temperature measuring holes in the top brick of coke ovens includes a guide support vertically fixedly mounted on a horizontal frame on the top surface of a coke oven proper, and a guide pipe shaft connected at its upper... | 04/23/1985 |
| 4494749 | Seal assemblies A caliper seal assembly is adapted to seal two relatively moving parts in a drilling tool or drill bit or other device where a sealing relationship must be maintained under relatively large relative position and tolerance changes between the two movable p... | 01/22/1985 |
| 4436158 | Releasable drill string device and method A drill string working tool is provided that may be releasably engaged to and removed from a drill string member. The tool, such as a cylindrical stabilizer body, is positioned around a cylindrical drill string member, the inner diameter of the stabilizer... | 03/13/1984 |
