Patent ID: 6112833
Filing Date: 2000-09-05
Classification: E21B,F24D,F24T,F25B,Y02B,Y02E

Abstract:
A bore hole drilling device for drilling substantially horizontal bore holes comprising,(a) a power drill,(b) a cylindrical, elongated hollow drilling stem, the stem comprising:a closed first end and a cylindrical open second end, provided the stem is other than hexagonal,connecting means at the open second end,a central liquid passage, the central liquid passage being open to, and extending from, the open second end to the closed first end, andat least one liquid outlet along the central liquid passage proximate the first end, and(c) an angular cutting member, the cutting member having at least three angles, two of the angles opposing one another,the cutting member being affixed within the first end of the stem, proximate the opposing angles,the cutting member being substantially planar member having a third angle leading as a cutting tip,the cutting member presenting a cutting region having a periphery substantially greater than the closed first end,wherein liquid enters the central liquid passage through the open second end and exits the liquid passage through the at least one liquid outlet, the liquid cooling the drilling stem.