Wells – Processes – Graveling or filter forming
Patent
1992-09-10
1994-09-06
Bui, Thuy M.
Wells
Processes
Graveling or filter forming
166 51, E21B 4300
Patent
active
053439490
ABSTRACT:
A zonal isolation washpipe system for isolating a production zone which intersects a wellbore from communication with the surface comprises a seal assembly adapted for sealing engagement within the bore of a well packer disposed about the external circumference of one end of a tubular washpipe, a releasable connector system on the other end of the washpipe which provides means for retrieval of the washpipe from the well bore is placed in sealing engagement by a releasable telescoping expansion joint which is resistant to undesired or premature extension.
When it is desired to place the isolated zone on production, a tubing perforator, such as a jet perforator which is commonly known in the art is lowered into the bore of the wash pipe to a location adjacent previously formed perforations in the casing and the wash pipe is perforated.
A method for gravel packing a well using the described tools is also presented.
REFERENCES:
patent: 4253522 (1981-03-01), Setterberg, Jr.
patent: 4726419 (1988-02-01), Zunkel
patent: 4832129 (1989-05-01), Sproul et al.
patent: 4842057 (1989-06-01), Lubitz
patent: 5103902 (1992-04-01), Ross et al.
LaBruyere Timothy F.
Patel Dhirajlal C.
Ross Colby M.
Bui Thuy M.
Druce Tracy W.
Griggs Dennis T.
Halliburton Company
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