Boring apparatus and method

A method of boring a wellbore comprising the steps of:

• a) providing a bit apparatus within the wellbore, said bit apparatus comprising:
• a bit body having a first end, an inner cavity, and a second end, wherein the first end is connected to the workstring, said workstring configured to deliver a rotational force to said bit body, wherein the inner cavity contains a profile having a first radial cam surface and one or more increased diameter circumference areas, and wherein the second end includes a working face containing a cutting member;
• and a pilot bit connected within the inner cavity and extending from the working face, said pilot bit having a first end and a second end, the first end including a second radial cam surface, the second end having an engaging surface, the pilot bit including a first outer diameter surface extending from the first end to a chamfered surface, the first chamfered surface extending to a second outer diameter surface, the second outer diameter surface extending to a second chamfered surface, the second chamfered surface extending to a third outer diameter surface, and wherein the outer diameter of the second outer diameter surface is less than the outer diameter of each of the first and third outer diameter surfaces;
• one or more retainers operatively associated with the pilot bit for retaining the pilot bit within the inner cavity, each retainer comprising a ball bearing member;
• wherein each of the one or more increased diameter circumference areas is adapted for placement of one of the one or more retainers;
• wherein each of the one or more increased diameter circumference areas and each of the one or more retainers are positioned adjacent to the second outer diameter surface of the pilot bit;
• b) lowering the bit apparatus into the wellbore;
• c) contacting the cutting member of the working face with a reservoir interface;
• d) rotating the bit body relative to the pilot bit;
• e) engaging the engaging surface of the pilot bit with the reservoir interface in the wellbore;
• f) impacting the second radial cam surface with the first radial cam surface so that a percussive force is delivered to the cutting members and the engaging surface while boring the wellbore with the bit apparatus.