Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Patent
1997-08-25
1999-11-23
Neuder, William
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
166386, 1663344, E21B 3414, E21B 4312
Patent
active
059882859
ABSTRACT:
A system for isolating a production pipeline string from the flow of fluids includes an isolation pipe string assembly. The isolation pipe string assembly is positioned by a shifting collet assembly so that in a first position fluids are allowed to the well bore through a sand control production screen. The shifting collet assembly is then used to position the isolation pipe string assembly in a second position wherein seals are placed both above and below the sand control production screen so that fluids are not allowed to re-enter the well bore.
REFERENCES:
patent: 4401158 (1983-08-01), Spencer et al.
patent: 4858690 (1989-08-01), Rebardi et al.
patent: 5579844 (1996-12-01), Rebardi et al.
patent: 5609204 (1997-03-01), Rebardi et al.
Schllumberger Oilfield Services Brochure, "PERFPAC Intergrated Perforating and Gravel Packing," Oct. 1995.
Schlumberger Dowell Technical Paper, "Sand Control: Why and How?" p. 41-53, Oct. 1992.
Bissonnette Harold S.
Tucker Andrew J.
Neuder William
Schlumberger Technology Corporation
Y'Barbo Douglas
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