Patent ID: 8661743

Claim:
A support system for a transportable rig operable for use with well head equipment on a well, comprising: a rig carrier operable to transport at least a portion of said transportable rig; and a mast assembly comprising: a pivotal portion of said mast assembly attached to said rig carrier, said pivotal portion of said mast assembly being movable between a lowered position and an upright position, said pivotal portion comprising a first mast support plate oriented laterally with respect to a longitudinal axis of the pivotal portion; a base portion of said mast assembly extending upwardly from a rear portion of said rig carrier, said base portion comprising a second mast support plate at an upper end thereof, wherein the second mast support plate contacts the first mast support plate and supports said pivotal portion of said mast assembly when said pivotal portion of said mast assembly is in said upright position; and a pivot joint connecting the pivotal portion and the base portion, wherein the pivot joint is positioned adjacent to the mast support plate and the base support plate, wherein in the upright position said pivotal portion extends rearwardly with respect to said rig carrier further than the base portion of the mast assembly, wherein in the upright position the pivotal portion has a generally vertical orientation, and wherein the pivot joint is located at a bottom end of the pivotal portion.