ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,192, issued on April 15, was assigned to Petroleo Brasileiro S.A.-Petrobras (Rio de Janeiro, Brazil).

"System and method for construction and completion of production and injection wells in the pre-salt fields" was invented by Cristiano Eduardo Agostini (Santos, Brazil), Marcos Jun Tsuchie (Santos, Brazil), Marcos Vinicius Barreto Malfitani (Santos, Brazil), Reinaldo Akio Tomita (Santos, Brazil) and Roger Savoldi Roman (Santos, Brazil).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention refers to a system and method for construction and completion of wells in the pre-salt production and injection fields. The application of the present...