Wells – Processes – Graveling or filter forming
Reexamination Certificate
2005-08-23
2005-08-23
Bagnell, David (Department: 3672)
Wells
Processes
Graveling or filter forming
C166S051000, C166S191000, C166S334400
Reexamination Certificate
active
06932156
ABSTRACT:
A method is disclosed that allows for sequential treatment of two zones in a single trip while isolating the zones. A fluid loss valve prevents the column of fluid in the tubing from flowing into the lower formation until activated. Zone isolation is accomplished by manipulation of a port on a wash pipe attached to the crossover assembly.
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Baycroft Perry D.
Bayne Christian F.
Baker Hughes Incorporated
Bomar Shane
Rosenblatt Steve
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