FIELD: oil and gas industry.
SUBSTANCE: device includes shank, tubing string, disconnector connecting upper part of shank to lower part of tubing string, which is made in the form of fitting assembly. Disconnector consists of funnel arranged on upper end of shank and inner self-releasing catch with fasteners. Disconnection of fitting assembly is performed by lowering of a ball inside tubing string so that hydraulic pressure is created in tubing string. Valve assembly connected to a shoe and equipped with a filter is arranged in lower part of shank.
EFFECT: design of disconnector allows performing shank cementing process which includes one lowering-lifting operation, due to which the shank cementing process duration is reduced.
2 dwg
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