US Patent Issued to Halliburton Energy Services on July 28 for "Estimation of pipe friction and stage resistance based on pressure temporal gradient" (Texas Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,775, issued on July 28, was assigned to Halliburton Energy Services Inc. (Houston).

"Estimation of pipe friction and stage resistance based on pressure temporal gradient" was invented by Derek Shelby Bale (Houston) and Zhijie Sun (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for evaluating one or more properties of a wellbore. The method may include generating a tube wave in a wellbore, measuring a pressure created by the tube wave at a wellhead and creating a time-domain model based at least in part on the pressure. The method may further include identifying a Darcy factor and a stage resistance based at least in part on the time...