Method and apparatus for isolating a zone of a wellbore and...

Details Method and apparatus for isolating a zone of a wellbore and... Method and apparatus for isolating a zone of a wellbore and...

E - Fixed Constructions

21

B

E21B 33/12 (2006.01) E21B 33/124 (2006.01) E21B 33/127 (2006.01) E21B 34/14 (2006.01)

Patent

CA 2055874

"METHOD AND APPARATUS FOR ISOLATING A ZONE OF A WELLBORE AND EXTRACTING A FLUID THEREFROM" ABSTRACT A method and apparatus for isolating a zone (12) of a wellbore (14) penetrated by a casing (16) and then opening ports (28) in the zone (12) for extraction or injection of fluids is provided. The zone (12) is isolated by inflating jackets (42) and then closing a safety valve (38) by sliding a sliding member (44) relative to a first conduit (46). The ports (28) are opened by sliding a piston (80) of a sliding sleeve valve (76) so that openings (84) therein align with the ports (28). The invention provides improved zone isolation and reduced wear of seals (86) in the sliding sleeve valve (76).

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