FIELD: oil and gas industry.
SUBSTANCE: device for replacement of gates during the repair of wellhead equipment includes housing with two fixed composite screws, two composite rods and one hollow locating stock with packer stock arranged in it. Locating stock is provided with possibility of its vertical movement in central hole of the housing. At that, screws, rods and locating stock are installed in traverses arranged at various height points relative to the housing. On one end of the locating stock there arranged is packer element for covering the X-mas tree shaft, which consists of sealing collars and a nut, on the other end - packer stock with a base, which is engaged with compression drive of sealing collars of packer element. At that, base of the locating stock transmits the force from pressure of well environment to the traverse restricted against being moved with two nuts arranged on composite leading screws. Composite leading screws and composite rods are arranged on the supports consisting of several brackets.
EFFECT: providing the possibility of simultaneous replacement of master gates under pressure without well kill operation.
4 dwg
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