US Patent Issued to SAUDI ARABIAN OIL on May 5 for "DAS depth calibration with multi-gauge length interrogation" (American, Saudi Arabia Inventors)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,992, issued on May 5, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).

"DAS depth calibration with multi-gauge length interrogation" was invented by Vladimir Kazei (Houston), Aleksei Titov (Golden, Colo.) and Andrey Bakulin (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are presented for determining a calibrated vertical seismic profile (VSP) with a distributed acoustic sensing (DAS) system in a borehole. The methods include obtaining a density log and an acoustic slowness log for the borehole; determining a first impedance, a DAS impedance from well log (DIL) curve, from the density log and...