US Patent Issued to Resman AS on Nov. 4 for "Method and apparatus for quantitative multi-phase downhole surveillance" (Norwegian Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,542, issued on Nov. 4, was assigned to Resman AS (Ranheim, Norway).

"Method and apparatus for quantitative multi-phase downhole surveillance" was invented by Thomas Sperle (Ranheim, Norway) and Oystein Molstre (Ranheim, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a method for quantitative downhole surveillance of a multi-phase flow, comprising at least two phases of either oil, water or gas, in a petroleum well. The method comprising providing at least one shunt chamber which comprises a flow phase separation section, a delay chamber, one or more outlet ports, at least one flow restrictor and a tracer release system w...