ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,333, issued on Aug. 12, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Lost circulation mitigation" was invented by Priscilla Canizares (Cambridge, Great Britain), Valerian Guillot (Montpellier, France) and Ashley Bernard Johnson (Cambridge, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Lost circulation events are mitigated by determining a size and extent of a formation feature causing the loss of circulation. The formation feature may be determined based on surface drilling parameters, and can apply one or more of a mechanical specific energy, hydraulic, or aperture model. Using such model(s), the size of a frac...