An apparatus and method for drilling deeper and wider well bores is provided. The apparatus includes a motorized drill head for cutting and shredding ground material; a separate excavation line; a separate fluid delivery line; a separate close loop engine cooling line; and a casing system. Excavation line includes repetitive stationary segments of the main pipe with periodical segments of an in-line excavation pump. The close loop cooling line includes a heat exchanger in the motorized drill head and in the in-line excavation pump and one on the ground surface in the binary unit where fluid is cooled and in process electricity produced. The diameter of the excavation line and rate of flow of mud and cuttings through it and the diameter of the fluid delivery line and rate of fluid flow through it are in balance requiring only limited fluid column at the bottom of the well bore.