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| Number | Title | Issue Date |
| 7377593 | Continous extraction of underground narrow-vein metal-bearing deposits by thermal rock fragmentation A method for extracting minerals from a narrow-vein deposit by thermal fragmentation is provided. The method includes locating the vein and determining the extent thereof to form the boundaries of a stope. Access to the stope is prepared by forming a panel having an... | 05/27/2008 |
| 7195320 | Thermal rock fragmentation application in narrow vein extraction A free-blast method for extracting ore from an ore vein deposit wherein the vein is extracted by causing the ore comprised between the rock walls bordering the vein to spall into fragments. The ore fragments are recuperated as by aspiration and subsequently processe... | 03/27/2007 |
| 7188414 | Method of assembling a flat electrical cable A flat electrical cable and a modular rotary anvil for assembling a flat electrical cable wherein the flat cable includes an upper and lower layer. The upper layer has ribs protruding along its length that are substantially parallel to one another, and continuous su... | 03/13/2007 |
| 7147064 | Laser spectroscopy/chromatography drill bit and methods A drilling apparatus for well-boring having a drill bit assembly which includes a laser cutting assembly and a vacuum assembly. The vacuum assembly is adapted to intake vapors generated by the laser cutting assembly proximate the drill bit assembly during operation ... | 12/12/2006 |
| 7086484 | Determination of thermal properties of a formation The present invention relates to methods and apparatus for making in situ thermal property determinations utilizing a heat source employed in wellbore stabilization procedures, well drilling, or well perforating, for example. In particular, using a heat source, such... | 08/08/2006 |
| 6913320 | Thermal rock fragmentation application in narrow vein extraction A free-blast method for extracting ore from an ore vein deposit wherein the vein is extracted by causing the ore comprised between the rock walls bordering the vein to spall into fragments. The ore fragments are recuperated as by aspiration and subsequently processe... | 07/05/2005 |
| 6888097 | Fiber optics laser perforation tool An apparatus for perforation of wellbore walls, which apparatus includes a fiber optic cable having a laser input end and a laser output end. A laser source is operably connected to the laser input end and a laser head is connected to the laser output end. The laser... | 05/03/2005 |
| 6851488 | Laser liner creation apparatus and method A method and apparatus for forming an in situ borehole liner in which a laser beam from a laser energy assembly disposed within a transparent drill head enclosure of a drill head assembly is directed into a rock formation to be drilled and a portion of the rock form... | 02/08/2005 |
| 6792735 | Advanced processes for coring and grouting masonry Advanced masonry coring systems for coring and grouting masonry walls are disclosed in this patent. The systems include rotating machinery and a drill column in the form of a cylindrical double-piped string of pipe sections, rotating a cylindrical drill body. The dr... | 09/21/2004 |
| 6755262 | Downhole lens assembly for use with high power lasers for earth boring An earth boring apparatus at least partially locatable within a borehole. The apparatus includes a plurality of optical fibers, each of which has a proximal fiber light energy input end and a distal fiber light energy output end. At least one focal lens is disposed ... | 06/29/2004 |
| 6672407 | Method of drilling, analyzing and stabilizing a terrestrial or other planetary subsurface formation The present invention provides a method for drilling, analyzing, and stabilizing subsurface formations. The system is generally formed around a reusable bottomhole assembly (BHA) that provides an anchoring and thrust mechanism, furnishing the necessary do... | 01/06/2004 |
| 6360829 | Soil sampling device The soil sampler of this invention is mounted on a wheeled vehicle and includes a frame having a pivotal mast which is movable between an upright position and a horizontally disposed position. An elongated, hollow soil probe is longitudinally movably moun... | 03/26/2002 |
| 5735355 | Rock melting tool with annealer section A rock melting penetrator is provided with an afterbody that rapidly cools a molten geological structure formed around the melting tip of the penetrator to the glass transition temperature for the surrounding molten glass-like material. An annealing after... | 04/07/1998 |
| 5479994 | Method of electrothermomechanical drilling and device for its implementation The proposed invention relates to the mining industry and may be used for drilling wells in loose rock, in particular in quaternary deposits and in technogenic rocks with simultaneous durable and ecologically clean tubingless well cementing. The proposed ... | 01/02/1996 |
| 5168940 | Profile melting-drill process and device Only a gap defining the outer profile of the tunnel or borehole is melted down in a peripheral heat drilling process for tunnels, deep-well and exploration boreholes. The drill core, surrounded by the generated gap, initially remains and is then extracted... | 12/08/1992 |
| 5148874 | High-pressure pipe string for continuous fusion drilling of deep wells, process and device for assembling, propelling and dismantling it A high pressure pipe string for continuous fusion drilling of deep wells which houses supply lines, measurement instrumentation and control wiring of the drilling device. It has at least two shell elements forming two halves of a pipe, and these parts are... | 09/22/1992 |
| 5125828 | Granite flame finishing internal burner An internal burner for producing a subsonic air-fuel flame jet capable of flame finishing granite of similar hard stone has a body forming a closed combustion chamber fed with an essentially stoichiometric flow of compressed air and fuel such that upon ig... | 06/30/1992 |
| 5107936 | Rock melting excavation process In a heat drilling process for tunnels, deep well and exploration boreholes, only a gap defining the outer profile of the tunnel or borehole is melted down. The drill core surrounded by this gap initially remains and is then extracted at intervals via the... | 04/28/1992 |
| 4776638 | Method and apparatus for conversion of coal in situ A method for the electro-thermal and electrochemical underground conversion of coal into oil and by-products comprises the steps of inserting an underground probe into a bore hole until the probe is in close proximity to a coal seam. A mixture of air, ste... | 10/11/1988 |
| 4282940 | Apparatus for perforating oil and gas wells A system for perforating the subsurface formation located in the area of an oil or gas bore hole in which a high powered coherent light beam axially is directed along the bore hole to a predetermined depth therein from a surface location, the beam is defl... | 08/11/1981 |
| 4199034 | Method and apparatus for perforating oil and gas wells A method of perforating the sub-surface formation located in the area of an oil or gas well bore hole comprising directing a high powered coherent light beam axially along the bore hole to a predetermined depth therein from a surface location, deflecting ... | 04/22/1980 |
| 4113036 | Laser drilling method and system of fossil fuel recovery Underground bores are drilled through a formation from a plurality of vertical bore holes by use of laser beams to form a subsurface, three-dimensional bore passage pattern for in situ preparation of fossil fuel deposits to be recovered. A laser beam is p... | 09/12/1978 |
| 4034567 | Self-drilling thermal bolt A self-implanting anchor comprising an elongated body having a first portion comprised of a consumable combustible material extending from a leading end of the body and back along the length of the body, and a second portion defining an anchor for implant... | 07/12/1977 |
| 4026356 | Method for in situ gasification of a subterranean coal bed The method of the present invention relates to providing controlled directional bores in subterranean earth formations, especially coal beds for facilitating in situ gasification operations. Boreholes penetrating the coal beds are interconnected by laser-... | 05/31/1977 |
| 4019331 | Formation of load-bearing foundations by laser-beam irradiation of the soil The method of converting clayey or silty soil into stable and solid underground columns or piles suitable for carrying a building structure, comprises first the drilling of bores of a diameter considerably smaller than the external diameter of the column ... | 04/26/1977 |
