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:
Jun. 25, 2013
Filed:
Jul. 30, 2010
Applicant:
Joel Rondeau, Antony, FR;
Inventor:
Joel Rondeau, Antony, FR;
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A bottom cementing plug is equipped to activate autofill float equipment. The bottom cementing plug contains an activation device that is released when the plug lands on the autofill equipment, then enters the autofill equipment, triggering the activation of check valves. The activation device may also contain a chemical substance that is released into the well when the activation device exits the bottom cementing plug.