US Patent Issued to Seismos on March 17 for "Formation fracture characterization from post shut-in acoustics and pressure decay using a 3 segment model" (Illinois, California, Texas Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,870, issued on March 17, was assigned to Seismos Inc. (Austin, Texas).

"Formation fracture characterization from post shut-in acoustics and pressure decay using a 3 segment model" was invented by Saeed Rahimi-Aghdam (Chicago), Ibrahim Said Abou-Sayed (Sugar Land, Texas), Daniel Moos (Palo Alto, Calif.) and David Murray (Austin, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for determining properties of hydraulic fractures from measurements of pressure in a well made after stopping pumping fracturing fluid into the well (shut in) includes determining a first time after shut in whereinafter a decrease in measured pressure is caused by...