Patent ID: 8002502
Filing Date: 2011-08-23
Classification: E21B,F24S,F24T,Y02E

Abstract:
1. A method of drilling a hole into the ground and installing a cast-in-place concrete pile, the method comprising: positioning a sonic drilling apparatus at a desired location, the sonic drilling apparatus including a rotating and vibrating apparatus for rotating and vibrating a hollow drill string into the ground, the hollow drill string having an inner space; drilling the hole to a desired depth by rotating and vibrating the hollow drill string into the ground and discharging a fluid into the inner space of the hollow drill string; filling the inner space of the hollow drill string with concrete following the drilling of the hole to the desired depth; and removing the hollow drill string from the ground; and lowering a reinforced steel structure into the inner space of the hollow drill string prior to filling the inner space of the hollow drill string with concrete.