US Patent Issued to 2458584 ALBERTA on April 1 for "Stage tools, stage tool assemblies, cementing operations, and related methods of use" (Canadian Inventor)

ALEXANDRIA, Va., April 2 -- United States Patent no. 12,264,553, issued on April 1, was assigned to 2458584 ALBERTA LTD. (Chestermere, Canada).

"Stage tools, stage tool assemblies, cementing operations, and related methods of use" was invented by David Dyck (Chestermere, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A stage tool assembly has a tubular body defining an interior bore with a port; an opening sleeve axially movable from a first position that restricts the port to a second position that exposes the port; a closing sleeve axially movable from a first position that exposes the port to a second position that restricts the port; and an isolation assembly downhole of the port that, at least wh...