ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,287, issued on Feb. 17, was assigned to Halliburton Energy Services Inc. (Houston).

"Production wellbore deflector-less multilateral system using a guidance sub" was invented by Jacob Dale Ford (Carrollton, Texas), Lars Petter Larsen (Stavanger, Norway) and Joakim Molven (Stavanger, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus comprises a guidance sub to be attached to a tubular string for conveyance of the tubular string in a multilateral wellbore. The guidance sub comprises an articulating buoyancy structure that comprises multiple buoyancy links comprised of a buoyant material such that the articulating buoyancy structure is...