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:
Aug. 27, 2013
Filed:
May. 12, 2010
Syed A. Ali, Sugar Land, TX (US);
Gunnar Debruijn, Calgary, CA;
Laurent Delabroy, Houston, TX (US);
Emmanuel Therond, Paris, FR;
Bruno Drochon, Cambridge, GB;
Cecilia Nguyen, Houston, TX (US);
Syed A. Ali, Sugar Land, TX (US);
Gunnar Debruijn, Calgary, CA;
Laurent Delabroy, Houston, TX (US);
Emmanuel Therond, Paris, FR;
Bruno Drochon, Cambridge, GB;
Cecilia Nguyen, Houston, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Single-phase microemulsions, comprising a solvent, a surfactant blend and a carrier fluid, are effective spacer fluids for use during cementing operations. The solvent may be selected from the group consisting of monoterpenes, diterpenes, and alkyl or aryl esters of short-chain alcohols. The surfactant blend comprises a water-wetting surfactant or nonionic surfactant, a co-surfactant and an oil-solubilizing surfactant. The carrier fluid is aqueous. The solvent and surfactant blend are combined with the carrier fluid to produce the well-treatment microemulsion.