Matches 1 - 15 out of 15


Match Document Document Title
DE112016003742T5 Safe high-performance condenser for underground drilling by means of electric rock crushing  
An underground drilling system is disclosed. The downhole drilling system may include a drill bit that includes a first electrode and a second electrode. The downhole drilling system may also...
DE102016116716A1 Method for sinking a borehole  
Method for sinking a borehole (3), in which the rock at the borehole bottom (2a) is melted by means of an electric plasma generator (8) and discharged from the borehole (2) by means of a gaseous...
DE102014004040A1 A method of drilling a borehole  
The invention relates to a method for drilling a borehole (2) in the mountains, wherein said present at the downhole rock is thermally melted and is discharged by means of a gaseous conveying...
DE102013016512A1 Hand cutters for rock, concrete, solid  
When "chisel loose drilling system", z. B. described in 10 2010 004 609.4 as well as others, also described in related patents ( "geothermal power plant", "Tunnel slicer" and others), are low cost...
DE102008049943A1 Method and apparatus for fusion drilling  
The invention relates to a Schmelzbohrverfahren and Schmelzbohrvorrichtung to create dimensionally accurate boreholes, shafts and tunnels in the ground, especially in rock, in which melted a hole...
DE112008000354T5 Assembly for drilling and logging, method for drilling and logging and device for electro pulse drilling  
An assembly for drilling and logging includes a device for electro pulse drilling (EPD device), at least one device to receive acoustic signals generated by the EPD device, distinguished in that...
DE10332571B3 Thermic drilling method for forming borehole in ice with initial formation of pilot bore and subsequent formation of main borehole via melting/rinsing drill head supplied with pressurized hot water  
The thermic drilling method has a small diameter pilot bore (9) provided in the ice by a melting drill head, with introduction of a melting/rinsing drill head (1) of greater diameter, supplied...
DE10164648C1 Computer-controlled melting probe for detecting different measurement parameters in an area of ice has a melting head, a vertical control tube and sensors with very small recording areas for obtaining good local definition  
As a modification of the well-known SUSI (Shuttle Under Shelf Ice) melting probe for melting through layers of ice and for carrying out measurements in the water underneath the ice, a melting...
DE10051087C1 Material breaking up process involves creating thermal stresses by applying electromagnetic radiation to at least some regions of material to be broken up  
The material breaking up process involves creating thermal stresses in a region (18) of the material (12) which is to be broken up. By this means, cracks are formed in the region in question to...
DE19909836A1 Molten metal drilling  
The invention relates to a moulten bath drilling method in order to carry out exact-size drill holes, especially drill holes having a large diameter, in rocks. According to the inventive method,...
DE19534173A1 Blasting subterranean borehole with shock waves generated by high voltage electrical discharges  
Pressure impulses or shock waves, are delivered by a high voltage electrical discharge near the point of cutting, to sink a borehole. Pref. the pressure impulse is transmitted by a fluid to the...
DE19501438A1 Initiation- and steam melt-boring process combined from earlier rock melting developments  
This invention combines steam-jet melt-boring and salt melt-boring processes, into an initiation- and steam melt-boring process, adapting advantageous attributes in conjunction with the...
DE19501437A1 Salt melt-drilling process to sink 2 m boreholes for highly active waste disposal  
Salt-melt drilling process for continuous or intermittent, fully automatic sinking, also produces a solidified bore hole casing after penetration. The process constructs large dia. perpendicular...
DE19500024A1 Microwave-superheated, steam plasma jet melt-boring of rock, consuming only electrical energy and water  
The steam jet melt boring process drives both small and oversized boreholes continuously in the required ground. This improved implementation, uses conveniently available water and electricity to...
DE4008571A1 Method of winning ground heat - involves drilling without rotation and using natural pressure and temperature ratios with electro hydraulic effects  
No further information at time of publication.

Matches 1 - 15 out of 15