US Patent Issued to ENI on June 10 for "Fluid for controlling the permeability of a subterranean formation, and use thereof" (Italian Inventors)

ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,777, issued on June 10, was assigned to ENI S.P.A. (Rome).

"Fluid for controlling the permeability of a subterranean formation, and use thereof" was invented by Stefano Carminati (San Donato Milanese, Italy), Giuseppe Maddinelli (San Donato Milanese, Italy), Davide Moscatelli (Arese, Italy) and Mattia Sponchioni (Vaiano Cremasco, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fluid for controlling the permeability of a subterranean formation having an aqueous solution of at least one thermo-responsive polymer with block structure A-B-A', wherein A and A', the same as or different from one another, each represent a thermo-responsive oligomer ...