FIELD: oil and gas industry.
SUBSTANCE: wellhead packer includes support pipe with through groove, shank, supporting and clamping plates, rubber collars, washer, piston rod, bolt, pusher that transmits clamping force of the bolt to clamping plate. Wellhead packer also contains hydraulic anchor and pressure-tight assembly that consists of casing, adapter and sealing rings installed between them and between piston rod and casing. Casing of pressure-tight assembly is connected to intermediate pipe via coupling. Support pipe has a collar in the bottom part that serves as support for supporting plate, rubber collars, washer and clamping plate put on it.
EFFECT: increase of reliability and convenience during operation, extension of scope of application.
5 cl, 1 dwg
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Authors
Dates
2013-03-20—Published
2011-10-13—Filed