ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,512, issued on March 25, was assigned to BAKER HUGHES OILFIELD OPERATIONS LLC (Houston).
"Multipole shear wave splitting" was invented by Theodorus Geerits (Nienhagen, Germany), Anna Swiatek (Celle, Germany), Stefan Schimschal (Celle, Germany) and Christoph Demmler (Celle, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Downhole measurement systems and methods include deploying a bottomhole assembly having a multipole transmitter into a formation and transmitting acoustic signals into the formation. The multipole transmitter is of order nless than=2. Acoustic signals are received at respective receivers that are circumferentially aligned wit...