SYSTEM AND METHOD USING MINES AND TUNNELS FOR TREATING SUBSURFACE HYDROCARBON CONTAINING FORMATIONS

摘要

A method for forming a subsurface wellbore is disclosed. The method includes operating a drilling string in a first direction of rotation. A first motor located near the end of the drilling string is operated in a direction of rotation opposite that of the drilling string. A drill bit is rotated using a second motor that is coupled to the first motor.