摘要:
The present invention provides for pulsed powered drilling apparatuses and methods. A drilling apparatus is provided comprising a bit having one or more sets of electrodes through which a pulsed voltage is passed through a mineral substrate to create a crushing or drilling action.
摘要:
The present invention provides for pulsed powered drilling apparatuses and methods. A drilling apparatus is provided comprising a bit having one or more sets of electrodes through which a pulsed voltage is passed through a mineral substrate to create a crushing or drilling action.
摘要:
The present invention provides for an assembly for creating a pressure pulse in a liquid-filled cavity within a fracturable material such as a boulder wherein the primary energy storage element is disposed in a transducer at the boulder to improve the coupling of energy between the energy storage unit and the fluid in the boulder.
摘要:
The present invention provides for an assembly for creating a pressure pulse in a liquid-filled cavity within a fracturable material such as a boulder wherein the primary energy storage element is disposed in a transducer at the boulder to improve the coupling of energy between the energy storage unit and the fluid in the boulder.
摘要:
The present invention provides for a method and apparatus for breaking mineral particles comprising suspending the particles in a liquid flowing in a conduction path, the liquid comprising a dielectric constant higher than the particles and wherein an electric voltage pulse is sent to electrodes to pass an electric field in the mineral particles with sufficient stress to fracture the mineral particles.
摘要:
A projector (10) for creating electrohydraulic acoustic and pressure waves comprising an energy source (21) (such as a capacitor) within approximately one meter of an electrode array (23). Larger projectors may be formed by arraying the projectors, and still larger projectors by arraying them.
摘要:
An apparatus and method for controlling power delivered to a pulsed power system which includes a command charge switch for controlling when power produced by a primary power system is fed into a cable. The command charge switch also controls the power delivered to the pulsed power system in a bottom hole assembly.
摘要:
The present invention provides for a method and apparatus for breaking mineral particles comprising suspending the particles in a liquid flowing in a conduction path, the liquid comprising a dielectric constant higher than the particles and wherein an electric voltage pulse is sent to electrodes to pass an electric field in the mineral particles with sufficient stress to fracture the mineral particles.
摘要:
The present invention provides for pulsed power breaking and drilling apparatuses and methods. The present invention comprises two pulsed power systems coordinated to fire one right after the other. The first pulsed power system, comprising a spiker, may create a high voltage pulse that breaks down the insulative properties of the substrate and may create an arc channel in the substrate. It is designed for high voltage but low energy, at high impedance. The second pulsed power system, comprising a sustainer, is designed to provide high current into the arc, but at low voltage, thus better matching the impedance of the arc and achieving much more efficient energy transfer.
摘要:
An electrohydraulic drilling system for drilling holes in material such as rock utilizing a drill stem connected to a flexible cable. The electrical spark or plasma that creates the electrohydraulic pressure wave is powered by an electrical pulse propagated down the cable from a pulse generator to the drill stem. An advance mechanism on a jackleg support is utilized to move the drill into the rock during the drilling process. The drill stem and cable combination enable holes to be drilled in the roof of tunnels where the floor to roof height is less than the depth of the hole to be drilled. The electrohydraulic process provides higher drilling efficiencies than conventional systems.