ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,851, issued on March 25.

"Reverse helix agitator" was invented by Jordan Binstock (South Heart, N.D.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A flow through assembly includes an anchoring device to secure a downhole assembly to a casing in a wellbore, the anchoring device includes a center flow channel; an upper perforated tube attached to the anchoring device, the upper perforated tube includes upper perforations and an upper flow channel fluidly connected to the center flow channel; and a lower perforated tube attached to the anchoring device, the lower perforated tube includes lower perforations and a lower flow channel, wherein gas can fl...