The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 2023
Filed:
Nov. 25, 2019
Applicant:
Torsch Inc., Calgary, CA;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/14 (2006.01); E21B 41/00 (2006.01); E21B 43/12 (2006.01);
U.S. Cl.
CPC ...
E21B 34/14 (2013.01); E21B 41/0078 (2013.01); E21B 43/12 (2013.01); E21B 2200/06 (2020.05);
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.