Drilling large diameter holes in rocks using multiple laser beams. ICALEO 2003, Congress Proceedings 01/2003.Parker, R., Xu, Z., Reed, C.B., Graves, R., Gahan, B.C., Batarseh, S., Drilling large diameter holes in rocks using multiple laser beams, ICALEO conference, (2003), LIA 504...
1. In apparatus for drilling large holes in the earth, a drill head, a drill shaft secured to said head and extending upwardly therefrom, said shaft being constructed of successive sections with couplings therebetween, a spiral flight on the lowermost section of said shaft and adapted to ...
Rotary organizations to adopt a new dual-motor turret to make it to the open-air blast drilling operations when drilling large holes to maintain a strong rotary torque output, dragging air compressor, it has the mobile and flexible and climbing ability, suitable for r...
Drill Hole Diameter 115-150mm Drill Hole Depth 62m Bit Type DTH Hammer Bit Drilling Way Impactor Wind Pressure 1.2-2.46MPa Air Consumption 10-20m3/Min Drilling Diameter 115-150mm Drilling Depth Down 62m Once Promotion 3000mm Power 56kw Drill ...
This DTH drillingmachinerotary organizations adopts a new dual-motor turret to make the open-air blast drilling operations while drilling large holes to maintain a strong rotary torque output with air compressor Application: thishydraulicblast...
HDD drilling tools fixed diameter hole opener with Milled Tooth cone bit for reaming large holes No reviews yet Hejian Deris Petroleum Drilling Equipment Co., Ltd.13 yrsCN Previous slideNext slide Previous slideNext slideKey attributes Industry-specific attributes Type DRILL BIT Machine Type ...
Slim holes cost less than large-diameter wells because (a) the smaller rigs require less transportation and site preparation, (b) the smaller-diameter holes have less expensive drilling tools, casing and cement jobs and, (c) if the hole is core-drilled, there is no need to repair lost ...
It is mainly suitable for all-round large diameter.It is a specialized perforation equipment for high segmented mining method and can also be used for the excavation and mining operations of raised and inclined shafts. This machine has an efficient down-hole drilling system, which...
Rotary organizations to adopt a new dual-motor turret to make it to the open-air blast drilling operations when drilling large holes to maintain a strong rotary torque output, dragging air compressor, it has the mobile and flexible and climbing ability, suitable for rugged venue operat...
1. A large diameter bit for producing holes in the earth by rotary drilling comprising a cutter support structure, a plurality of roller cutters including gage cutters and a plurality of interior cutters radially inward thereof individually mounted on the bottom of said support in a manner to eng...