US 11,851,986 B2
Sleeve valve
Shane Sargent, Calgary (CA); Matthew McCarthy, Calgary (CA); and Sean Borschneck, Calgary (CA)
Appl. No. 17/296,245
Filed by TORSCH INC., Calgary (CA)
PCT Filed Nov. 25, 2019, PCT No. PCT/CA2019/051682
§ 371(c)(1), (2) Date May 23, 2021,
PCT Pub. No. WO2020/102913, PCT Pub. Date May 28, 2020.
Claims priority of provisional application 62/770,914, filed on Nov. 23, 2018.
Prior Publication US 2022/0018216 A1, Jan. 20, 2022
Int. Cl. E21B 34/14 (2006.01); E21B 41/00 (2006.01); E21B 43/12 (2006.01)
CPC E21B 34/14 (2013.01) [E21B 41/0078 (2013.01); E21B 43/12 (2013.01); E21B 2200/06 (2020.05)] 20 Claims
OG exemplary drawing
 
1. An apparatus for selectably injecting materials into a well comprising:
an elongate inner casing having a first set of passages selectably closable by a first sleeve and a second set of passages selectably closable by a second sleeve therethrough; and
an outer casing extending between 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,
wherein the first and second sleeves are located within the central passage and freely engagable by a shifting tool.