US Patent Issued to DOWNHOLE PRODUCTS on May 27 for "Rasping shoe for non-rotational deployment of casing string" (American, British Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,879, issued on May 27, was assigned to DOWNHOLE PRODUCTS Ltd..

"Rasping shoe for non-rotational deployment of casing string" was invented by Douglas Farley (Missouri City, Texas), Alexander Craig Mackay (Aberdeen, Great Britain) and Carl Aron Deen (Choctaw, Okla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rasping shoe for non-rotational deployment of a casing string into a wellbore includes: a tubular body; and a nose mounted to an end of the tubular body. The nose includes: a base portion made from a drillable metal or alloy; a plurality of blades protruding from an outer surface of the base portion; a plurality of broaching cutters mounted t...