Wells – Packers or plugs – With expanding anchor
Patent
1986-01-27
1988-02-23
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166122, 166189, E21B 33128, E21B 3406
Patent
active
047264225
ABSTRACT:
An annular safety assembly comprising, between an upper cylindrical body and a lower cylindrical body, through which connecting tubes of production tubes pass, a packer and a low-bulk anchorage system consisting of a radial spacing ring, a resilient anchorage ring split along a generatrix and provided with peripheral anchorage teeth and a thrust ring which can be moved upwardly by thruster-plungers extending from the lower cylindrical body to apply the anchorage ring to the casing, and a safety valve arranged separately from the connecting tubes, which extend between the said cylindrical bodies, and below the lower cylindrical body.
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Helderle Paul M.
Lescoeur Jean A.
Kisliuk Bruce M.
Novosad Stephen J.
Total Compagnie Francaise des Petroles
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