MECHANIZED DRILLING RIG RACK ASSEMBLY (VARIANTS) Russian patent published in 2006 - IPC E21B19/14 

FIELD: drilling equipment, particularly for cluster drilling deep oil and gas wells.

SUBSTANCE: mechanized drilling rig rack assembly comprises right and left racks pivotally connected to derrick-and-winch unit. The racks are made as L-shaped metal structures and provided with collapsible plates, which may be retained in working position. Each collapsible plate comprises built-in gutter. The collapsible plates are pivotally secured between the racks and connected to one rack by the first sides thereof, but the collapsible plate may be separately connected to both racks, that is part of collapsible plate may be connected to left rack, part thereof may be secured to right rack. Beam crane may be installed on the racks so that the beam crane moves along ramp. Cantilever rack parts are connected with supports provided with platforms and jacks pivotally connected to lower parts thereof. Aperture in working plate of derrick-and-winch unit up to collapsible plate is covered with two-member lid.

EFFECT: increased mechanization rate and safety and reduced rack length.

4 cl, 4 dwg