FIELD: oil and gas production and exploration works, particularly to replace broken well production tree gates under well medium pressure.
SUBSTANCE: device comprises body, support panel, hollow drive-screw, hollow paired concentric rod with sliding nut, packer, rod for packer releasing, two sectional rods and two brackets. Packer adapted to operate under working pressure of 70 MPa comprises rubber member arranged between rigid pressure disc and support disc including inner cams and outer sectors pulled together by annular spring so that the sectors may move apart in radial direction as far as they abut against well through channel wall to maintain cylindrical shape thereof. Movable paired concentric rod with sliding nut, as well as hollow sliding screw and hexahedral pin fixed with thrust bearings are installed in the body.
EFFECT: reduced labor inputs for packer installation, increased labor productivity and extended field of device application.
6 dwg
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