Sleeve valve
AssigneeTorsch Inc.
InventorsShane Sargent, Matthew McCarthy, Sean Borschneck
Life of this patent
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Abstract
An apparatus for selectably injecting materials into a well comprises an elongate inner casing having first and second sets of selectably closable passages therethrough and an outer casing extending between the first and second ends surrounding the inner casing so as to form an annular cavity therebetween. The first end of the outer casing is sealably connected to the inner casing and the second end of the outer casing has a free edge proximate to the second set of passages. The first set of passages extends through the inner casing into the annular cavity such that fluid passing through either of the first or second sets of passages enters an exterior of the apparatus at a common location.
Claims20
An apparatus for selectably injecting materials into a well comprising:
- an elongate inner casing having first and second sets of selectably closable passages therethrough;
- and
- and an outer casing extending between said first and second ends surrounding said inner casing so as to form an annular cavity therebetween, wherein said first end of said outer casing is sealably connected to said inner casing, wherein said second end of said outer casing has a free edge proximate to said second set of passages;
- wherein said first set of passages extends through said inner casing into said annular cavity such that fluid passing through either of said first or second sets of passages enters an exterior of said apparatus at a common location.
The apparatus of claim 2 wherein said first and second passages provide first and second paths from said interior of said inner casing to an exterior of said apparatus.
A method of selectably injecting materials into a well comprising:
- securing an elongate inner casing having first and second sets of selectably closable passages therethrough with a corresponding outer casing surrounding said inner casing so as to form an annular cavity therebetween to a wellbore string;
- positioning said inner casing at a desired position within the wellbore;
- and
- selectably opening or closing one of said first or second passages to provide a first or second path from an interior of said inner casing to an exterior of said inner and outer casings;
- wherein said first extends through said annular cavity and said second path extends through said second set of passages and wherein said first and second passages terminate at a common location.
Dependencies are inferred from the claim text.