US Patent Issued to ARDYNE HOLDINGS on June 24 for "In or relating to well abandonment and slot recovery" (British Inventors)

ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,701, issued on June 24, was assigned to ARDYNE HOLDINGS Ltd. (Aberdeen, Great Britain).

"In or relating to well abandonment and slot recovery" was invented by Alan Fairweather (Aberdeen, Great Britain), James Linklater (Aberdeen, Great Britain) and David Stewart (Aberdeen, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Method of removing casing from a well, in which an annulus between the outside of the casing and the inside of a surrounding downhole body is at least partially filled by debris, the perforated section of casing is washed in casing lengths shorter than the perforation length and an attempt made to pull the casing after e...