AUXILIARY ARTIFICIAL BOTTOM IN THE BOREHOLE DEVELOPMENT DEVICE Russian patent published in 2019 - IPC E21B33/134 E21B33/136 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the field of mining operations, namely to the field of the liquid fluids extraction from boreholes, and can be used in the oil, gas and gas condensate fields development, cement plug in the wellbore installation at the required depth with maximum efficiency. Device includes having the front end and the rear end, the upper and the lower folding expandable frames body. On these frames the impermeable material is fixed. Frames are made with the possibility of folding in the transport state and expansion with the possibility of the wellbore cross-sectional area overlapping with the auxiliary bottom in the wellbore formation for the cement plug subsequent formation possibility. At that, the device additionally comprises the movable axial element. On it the lower frame ribs bases are fixed. Upper frame ribs bases are fixed on the body stationary part. Both frames are interconnected by the connecting links, articulated to the upper and lower frame ribs with possibility of the last one unfolding with a delay relative to the first one. Frames are made with possibility of expansion under the action of located on the body axis spring pusher, acting on the frames by means of the transmission mechanism.

EFFECT: technical result is increase in the device reliability due to the possibility of the device forced bringing into operating position.

9 cl, 4 dwg