US Patent Issued on July 29 for "Coiled tubing section mill" (Louisiana Inventor)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,963, issued on July 29.

"Coiled tubing section mill" was invented by Gerald J. Cronley (Gretna, La.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A section mill having a tubular mill body is attached to a carrier pipe string such as a coiled tubing string. A translatable elongated tubular piston mandrel is positioned within the mill body to receive a flow of fluid from a central fluid bore in the carrier pipe string. The tubular piston mandrel has attached upper and lower pistons respectively positioned within upper and lower piston chambers in the mill body. The pistons move the piston mandrel vertically upward and downward in response to fluid pr...