Wells – Means for forming filter beds
Patent
1981-11-09
1983-08-30
Novosad, Stephen J.
Wells
Means for forming filter beds
166113, 166131, 166191, 166205, 166278, 166334, E21B 33124, E21B 3414, E21B 4304, E21B 4310
Patent
active
044011580
ABSTRACT:
An apparatus is provided for gravel packing a plurality of zones within a subterranean well. Primary sealing means are adapted for setting in casing at a position above the zones. A plurality of sets of production screens and valve means are provided, the valve means being equal in number to the zones to be packed and being carriable in the well with the primary sealing means. Zone isolation means are connected between each said set and expansible into sealing engagement with the casing. A control mandrel includes a single cross-over means for diverting gravel carrying fluid. A plurality of vertically spaced sealing means are defined on the cross-over means for successively isolating each set from the others when the cross-over means is positioned in proximity to each valve means. Valve opening means are provided on the control mandrel and are operable by longitudinal movement of the mandrel to positions for opening and closing the valve means. Means for supplying gravel carrying fluid to the interior of the control mandrel is provided whereby each successive production zone may be gravel packed by successively moving the conduit and the mandrel assembly to cooperate with each of the sets, without retrieving the conduit from within the well.
REFERENCES:
patent: 3517743 (1970-06-01), Pumpelly et al.
patent: 3987854 (1976-10-01), Callihan et al.
patent: 4044832 (1977-08-01), Richard et al.
patent: 4049055 (1977-09-01), Brown
patent: 4105069 (1978-08-01), Baker
patent: 4270608 (1981-06-01), Hendrickson et al.
Donovan Joseph F.
Spencer Jack D.
Baker International Corporation
Norvell, Jr. William C.
Novosad Stephen J.
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