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专利名称：Hydraulic set and straight pull release well
packer
发明人：James K. Garner, Jr.申请号：US06/129454申请日：19800311公开号：US04263968A公开日：19810428
摘要：A well packer adapted to be set in a conduit disposed in a well bore havinginitially retracted packing seal means and initially retracted slip means which are set byopposing acting hydraulically actuated pistons. A single one- way clutch is connectedbetween the pistons allowing simultaneous movement of the pistons for setting andholding the packer centrally in the conduit. A releasable sub includes an abutmentmember initially positioned against the top of the packing seal means with a housingtelescopically surrounding and initially holding the abutment in position. An outermember is releasably connected to the housing and to a packer expander sleeve andvarious coacting shoulders are provided between the components whereby verticalmovement upwardly of the packer housing will release the set packer.
申请人：CAMCO, INCORPORATED
代理机构：Fulbright & Jaworski
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