ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,176, issued on Feb. 10.
"Wireline pressure control string with pumpdown assembly" was invented by Corey Massey (Norman, Okla.) and James Cook (Granbury, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pumpdown system for use in performing wireline operations on a well bore includes a wellhead assembly positioned at the top of the well bore, a pumpdown fluid source, a flowline having a first end connected to the pumpdown fluid source and an opposite second end, and a wireline pressure control string releasably connectable to the wellhead assembly. The wireline pressure control string includes a pumpdown sub having a body and a through bore whi...