Hydraulic drilling apparatus and method

摘要: Hydraulic drilling apparatus and method suitable for use in a variety of applications including the deep holes oil gas wells vertical, horizontal or slanted holes, through both consolidated unconsolidated formations, cutting removing core samples. The drill head produces whirling mass pressurized fluid, this fluid is applied to discharge nozzle produce high velocity jet. action enhanced by abrasive material fluid. direction borehole controlled controlling either side jets directed radially from distal end portion string which carries plurality forwardly jets.