Drilling rig with bidirectional dual eccentric reamer

A drilling rig having a bidirectional dual eccentric reamer for reaming into and out of a wellbore, wherein the bidirectional dual eccentric reamer is coupled on a first end to a drill string and on a second end to a drill bit, the drilling rig comprising:

• a. a tower having a crown with sheaves;
• b. a drawworks connected to a drawworks motor and connected to a power supply;
• c. a cable extending from the drawworks through the sheaves over the crown;
• d. a lifting block connected to the cable;
• e. a hydraulic pump connected to a tank for flowing fluid into the wellbore as a drill pipe is turned into the wellbore;
• f. a rotating means for turning the drill pipe into the wellbore, the rotating means comprising at least one of:
• a top drive or a power swivel mounted to the lifting block or a rotary table mounted to a rig floor for rotating the drill pipe into the wellbore;
• g. a blowout preventer connected between the rotating means and the wellbore for receiving the drill pipe;
• and
• h. a bidirectional dual eccentric reamer mounted in drill pipe sections as the drill pipe is run into the wellbore with the drilling rig to save measurement while drilling equipment and bottom hole components downhole, wherein the bidirectional dual eccentric reamer comprises:
• (i) a shaft having a longitudinal axis, wherein the shaft comprises:
• 1. an annulus formed longitudinally in the shaft;
• 2. a first shaft portion with a first diameter;
• 3. a first neck having a first neck diameter less than the first diameter;
• 4. a second shaft portion with a second diameter;
• 5. a second neck having a second neck diameter, the second neck diameter being less than the first diameter;
• and
• 6. a third shaft portion with a third diameter;
• (ii) a plurality of reamer portions disposed on the shaft, wherein each reamer portion comprises:
• 1. a first helical blade extending from the shaft having a first thickness;
• 2. a second helical blade extending from the shaft having a second thickness that is larger than the first thickness;
• 3. a plurality of flutes formed between each pair of helical blades;
• and
• 4. a plurality of cutting nodes installed on at least one edge of at least one helical blade;
• and
• (iii) a center of eccentric rotation which is offset from the longitudinal axis of the shaft, enabling the bidirectional dual eccentric reamer to form a larger wellbore than a drill bit diameter and a larger diameter wellbore than originally drilled by the drill bit.