Wells – Processes – Graveling or filter forming
Patent
1997-12-10
2000-05-09
Bagnell, David
Wells
Processes
Graveling or filter forming
166 51, 166157, 166193, 166222, 166284, 1663051, 166312, 166325, E21B 2110, E21B 3700, E21B 4304
Patent
active
060590327
ABSTRACT:
A method and apparatus for treating a long interval within a wellbore wherein a treatment fluid is delivered to selected levels within the interval by blocking flow to certain zones while allowing flow to others. A treatment tube extends substantially through the interval and is comprised of a perforated conduit which is open at its upper end and which has a plurality of openings spaced along its length. Each of the openings have a valve seat within the conduit at its entrance which is adapted to receive a valve to seal and block flow through that opening. In operation, a treatment fluid is flowed through the treatment tube and out the openings into different levels within wellbore. At desired intervals, the valve are introduced into the treatment fluid and are carried into the treatment tube to seat at a respective opening to thereby block flow through that opening while allowing continued flow through others.
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Bagnell David
Cho Chong S.
Keen Malcolm D.
Mobil Oil Corporation
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