FIELD: geophysical well examination technology.
SUBSTANCE: device provided with pressing lever with rotation axis on device body has watertight body and electromechanical drive, driving screw and rod placed on said body. Said force rod is connected to pressing lever through intermediate support, which is fixed in through slot on rod, and in said support a groove is made, where an element for interaction with pressing lever is placed, and in device body guiding grooves are made forming reinforcing wall with aperture through which the rotation axis of pressing lever is placed.
EFFECT: higher reliability of well device operation due to increased pressing force pressing it to well wall.
2 cl, 4 dwg
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