Abstract: A method for facilitating horizontal drilling by positioning in a well casing a shoe defining a passageway extending from an upper opening in the shoe through the shoe to a side opening in the shoe. A rod is connected, through at least one block and pin assembly operative as a universal joint, to a casing mill end, and inserted into the well casing and through the passageway in the shoe until the casing mill end substantially abuts the well casing. The rod and casing mill end are then rotated until the casing mill end substantially forms a perforation in the well casing. The rod and casing mill end are then withdrawn from the well casing, and a nozzle attached to the end of a flexible hose is extended through the passageway to the perforation. Fluid is then ejected from the nozzle and impinges and erodes subterranean formation material.