US Patent Issued to Expro Americas on Dec. 30 for "Detection of top of cement within an annular environment" (Texas Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,982, issued on Dec. 30, was assigned to Expro Americas LLC (Houston).

"Detection of top of cement within an annular environment" was invented by John Christopher Jordan (Houston), Maxim Tseplic (Houston) and Steve Russell (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for detecting a top of cement (TOC) within an annulus of a subterranean wellbore includes providing a frangible compartment in a wiper plug, frangible compartment containing a detectable material, launching the wiper plug into the wellbore ahead of a cement slurry, causing the wiper plug to strike or land on a casing shoe withing a casing thereby creating an impact th...