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:
Nov. 04, 2008
Filed:
Jan. 29, 2007
Samuel J. Lewis, Duncan, OK (US);
Michael J. Szymanski, Duncan, OK (US);
Kristi D. Thacker, Velma, OK (US);
Samuel J. Lewis, Duncan, OK (US);
Michael J. Szymanski, Duncan, OK (US);
Kristi D. Thacker, Velma, OK (US);
Halliburton Energy Services, Inc., Duncan, OK (US);
Abstract
A method is provided for reducing the density of a well cement composition for cementing in a subterranean formation. The method comprises providing a cement composition that comprises water and a cement, and then adding an additive comprising an anionic foam stabilizer and an anionic foaming agent or a Zwitterionic foam booster. A gas is added to this mixture to reduce the density. Further, foamed cement compositions and additives for foaming and stabilizing a well cement composition are provided.