E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/26 (2006.01) E21B 33/138 (2006.01)
Patent
CA 2449195
The current invention provides a method for isolating selected downhole zones of a wellbore. The method utilizes pre-perforated conduit wherein the perforations have been temporarily sealed prior to positioning downhole. A resin-coated particulate, which forms a permeable solid mass to filter and prevent the introduction of formation sand or fines during well production and is used to secure the pre-perforated casing in the wellbore. The pre- perforated casing, permeable solid and formation are perforated and the resulting perforations filled with a curable composition which cures as an impermeable solid. The impermeable areas define individual downhole zones. Devices such as straddle packers or expandable tubes encapsulated in impermeable sleeves are used to isolate the resulting zones.
Nguyen Philip D.
Sanders Michael W.
Halliburton Energy Services Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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