| Document |
Document Title |
|
7377593 |
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...
|
|
7195320 |
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 aspirat...
|
|
7147064 |
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 b...
|
|
7086484 |
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 particul...
|
|
6913320 |
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 aspirat...
|
|
6888097 |
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 th...
|
|
6851488 |
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 a...
|
|
6792735 |
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 c...
|
|
6755262 |
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 leas...
|
|
6672407 |
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, furnishin...
|
|
6360829 |
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 longitudi...
|
|
5735355 |
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. ...
|
|
5479994 |
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 cement...
|
|
5168940 |
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...
|
|
5148874 |
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, a...
|
|
5125828 |
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...
|
|
5107936 |
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...
|
|
4776638 |
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 m...
|
|
4282940 |
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...
|
|
4199034 |
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 loc...
|
|
4113036 |
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....
|
|
4034567 |
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 ...
|
|
4026356 |
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 interc...
|
|
4019331 |
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 diame...
|
|
3885832 |
A tunneling machine for producing large tunnels in rock by progressive detachment of the tunnel core by thermal melting a boundary kerf into the tunnel face and simultaneously forming an initial tunnel wall support by deflecting the molt...
|
|
3881777 |
A tunneling machine for producing large tunnels in soft rock or wet, clayey, unconsolidated or bouldery earth by simultaneously detaching the tunnel core by thermal melting a boundary kerf into the tunnel face and forming a supporting ex...
|
|
3870111 |
An automatic drilling feed rate control for a jet piercing drilling machine. A weight cell generates a signal proportional to the resistance to penetration force experienced by the jet piercer burner assembly while piercing a drill hole ...
|
|
3792741 |
A jet spalling assembly for use as a unit of a mobile drill-spalling rig, comprising a plurality of telescoping tubes; an upper end section of the outermost tube disposed out of the telescoping relationship; a plurality of conduits exten...
|
|
3693731 |
A machine and method for drilling bore holes and tunnels by melting in which a housing is provided for supporting a heat source and a heated end portion and in which the necessary melting heat is delivered to the walls of the end portion...
|
|
3602620 |
The present invention has reference to a thermal lance or tool with a gas discharge end for working, in particular, boring, cutting and like treating hard base materials, said tool being comprised of a longitudinal core including a cable...
|
|
3575244 |
A head for liquid explosives primarily intended for rock destruction having channels for the delivery of liquid components and initiator wherein one of the channels for delivering liquid components and the channel for delivering the init...
|
|
3548957 |
|
|
3473972 |
|
|
3396806 |
|
|
3313359 |
|
|
3297876 |
|
|
3260076 |
|
|
3152651 |
|
|
3115194 |
|
|
3115184 |
|
|
3095031 |
|
|
3034874 |
|
|
2776816 |
|
|
2684669 |
|
|
2642656 |
|
|
2537165 |
|
|
2426688 |
|
|
2327498 |
|
|
2327483 |
|
|
2286782 |
|
