System for operating a drilling rig with a retracting guide dolly and a top drive

摘要

A top drive assembly having a top drive traveling block; a retracting guide dolly for use with the top drive traveling block and top drive operably by a master control system to hydraulically operate all of the top and bottom dolly arms simultaneously to extend and retract the top drive and top drive traveling block laterally and move the dolly as needed based on signals from a plurality of sensors disposed on the drilling rig, or on equipment adjacent the drilling rig.

主权项

1. A top drive assembly for a drilling rig comprising:
a. a top drive; b. a retracting guide dolly connected to the top drive for ensuring the top drive is positioned over a well center, wherein the retracting guide dolly comprises:
(i) a first dolly engagement roller assembly;(ii) a first dolly arm pivotably connected to the first dolly engagement roller assembly and the top drive;(iii) a second dolly engagement roller assembly axially aligned with the first dolly engagement roller assembly;(iv) a second dolly arm pivotably connected to the second dolly engagement roller assembly and the top drive;(v) a third dolly engagement roller assembly disposed on an opposite side of the top drive as the first roller;(vi) a third dolly arm pivotably connected to the third dolly engagement roller assembly and the top drive;(vii) a fourth dolly engagement roller assembly operatively aligned with the third dolly engagement roller assembly; and(viii) a fourth dolly arm pivotably connected to the fourth dolly engagement roller assembly and the top drive; wherein each dolly arm is extendable and retractable relative to the corresponding dolly engagement roller assembly; c. a top drive traveling block attached to the top drive and a drill line; d. a traveling block dolly assembly secured to the top drive traveling block, wherein the traveling block dolly assembly comprises:
(i) a first traveling block roller assembly;(ii) a second traveling block roller assembly;(iii) a first traveling block arm pivotably connected to the first traveling block roller assembly and the top drive traveling block; and(iv) a second traveling block arm pivotably connected to the second traveling block roller assembly and the top drive traveling block; e. a plurality of hydraulic cylinders, wherein one of the hydraulic cylinders engages at least one dolly arm or at least one traveling block arm; and f. a master control system for controlling the top drive assembly from a remote location.