FIELD: oil-and-gas production.
SUBSTANCE: proposed device comprises assembly for disconnection of casing liner connected with guide funnel of hydraulically driven anchor-parker assembly housing hollow rod with radial holes. Note here that said hollow rod and anchor-parker assembly case for annular chamber. Note also that anchor and parker assemblies are integrated and made up of shaped tube with sealed bottom. Plunger is fitted on shear pins in top section of said annular chamber to overlap channel of communication between said annular chamber and shaped tube inner space when pins are sheared by hydraulic pressure. Mind that hollow rod top end is pivoted while suspended cementing plug locking assembly is fitted on rod opposite end. Said anchor-parker assembly bottom section is connected with casing liner branch pipe engaged with liner.
EFFECT: higher reliability, ruled out sticking in curved well, simplified design, lower costs.
5 dwg
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