RIG Russian patent published in 2011 - IPC E21B3/00 

FIELD: gas and oil production.

SUBSTANCE: rig consists of frame, of jack column with supports fixed on frame, of feeder with attached implements set on jack column and of hoist. Also, the jack column is made in form of a case with internal and external thread on its ends. An adjusting nut is screwed on external thread. A retractable telescope is installed inside the case; the telescope is fixed with a stop relative to the adjusting nut and the case. The jack column is secured on a shaft by means of a bracket; it can be transferred from a horizontal position into a vertical one by means of a rotation reducer actuated with muscular force of an operator.

EFFECT: transportation of rig along mine workings with low vaults; simplified operation for release of jack column in mine working.

3 dwg