Wells – Packers or plugs – Spaced sealing portions
Patent
1980-08-04
1981-10-27
Purser, Ernest R.
Wells
Packers or plugs
Spaced sealing portions
285133A, E21B 33124
Patent
active
042968089
ABSTRACT:
An isolation packer extension doubles the distance between upper and lower packer assemblies of an isolation packer so that less accurate positioning thereof is required when performing cementing operations from a floating vessel.
REFERENCES:
patent: 1521482 (1924-12-01), Steele
patent: 1910442 (1933-05-01), Manning
patent: 2568087 (1951-09-01), Page
patent: 2569437 (1951-10-01), Baker
patent: 2704580 (1955-03-01), Brown
patent: 2795281 (1957-06-01), Christian
Baker Eugene E.
Carter, Jr. Ernest E.
Beavers Lucian Wayne
Duzan James R.
Halliburton Services
Purser Ernest R.
Tregoning John H.
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