The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2025
Filed:
Mar. 27, 2024
Expro Americas, Llc, Houston, TX (US);
John Christopher Jordan, Houston, TX (US);
Maxim Tseplic, Houston, TX (US);
Steve Russell, Houston, TX (US);
Expro Americas, LLC, Houston, TX (US);
Abstract
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 that causes the frangible compartment within the wiper plug to be ruptured to release the detectable material into the casing, pumping the cement slurry to pass through the wiper plug such that the released detectable material forms a leading portion of the cement slurry and rises up in an annulus of the wellbore, and detecting the detectable material at a top of cement (TOC) when the detectable material in the annulus passes by a plurality of sensors.