E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/22 (2006.01) E21B 37/08 (2006.01) E21B 43/02 (2006.01) E21B 43/25 (2006.01) E21B 43/26 (2006.01)
Patent
CA 2255536
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 said conduit at its entrance which is adapted to receive a valve means 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 said wellbore. At desired intervals, valve means 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
Exxonmobil Oil Corporation
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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