| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: modification of piston separator design, as a result of which the possibility of load increase at a logging cable is excluded as an elastic collar is separated, unconditional drainage of a sludge pump is carried out in the zone of bridge installation, and separation of a self-sealing collar is provided regardless of the casing string wall condition in the zone of bridge installation. The piston separator of the device is equipped with a pusher weight and a stop installed as capable of interaction in the lower position of the piston separator with a spacer bushing of a ball lock made in a hollow stem, balls of which are placed in a bore of a sliding bushing, which fixes the self-sealing collar.EFFECT: using the proposed device makes it possible to considerably simplify technology of installation of cement bridges and to increase safety of works.3 dwg |
