Patent ID: 7814971
Filing Date: 2010-10-19
Classification: E21B

Abstract:
1. A drill rig comprising: a carrier platform; a support frame pivotally mounted on the carrier platform, outside surfaces of the support frame being covered with a first layer of vibration dampening material; a slider frame slidably mounted upon and surrounding the support frame, wherein the slider frame further comprises a top plate and a bottom plate for covering top and bottom surfaces of the support frame, and outside and inside joiner plates for respectively covering side surfaces of the support frame, and wherein surfaces of the plates which contact an outside surface of the support frame are also covered with a second layer of vibration dampening material, the first layer and the second layer of the vibration dampening material contacting each other along at least a partial length of the support frame; a drilling support mechanism mounted on the slider frame; a drill portion mounted on the drilling support mechanism and rotatable relative to the drilling support mechanism; and power means for effecting rotation of the drill portion.