Drainhole well completion
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United States of America Patent
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-
Dec 22, 1987
Grant Date -
N/A
app pub date -
Apr 20, 1987
filing date -
Apr 20, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for completing a drainhole wellbore with casing but without conventional cementing of the casing wherein in the drainhole portion of the wellbore a casing string composed of alternating casing subs and external casing packer subs is employed, the external casing packer subs carrying an elastic member adapted to be expanded and form a seal between the exterior of the casing string and the wellbore wall, and one or more of the external casing packer subs is activated to expand the elastic member carried by same thereby providing for isolation of discreet segments of the casing string in the drainhole portion of the wellbore to allow for localized production and remedial treatments in the drainhole wellbore.
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