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:
Jul. 24, 2007
Filed:
Jun. 05, 2001
Christine Dalmazzone, Versailles, FR;
Annie Audibert-hayet, Croissy sur Seine, FR;
Bruno Langlois, Sainte Genevieve des Bois, FR;
Sylvie Touzet, Antony, FR;
Christine Dalmazzone, Versailles, FR;
Annie Audibert-Hayet, Croissy sur Seine, FR;
Bruno Langlois, Sainte Genevieve des Bois, FR;
Sylvie Touzet, Antony, FR;
Institut Francais du Petrole, Rueil Malmaison Cedex, FR;
Rhodia Chimie, Aubervilliers Cedex, FR;
Abstract
A temperature-stable, non eco-toxic oil-base well fluid that is particularly suitable for high pressure/high temperature drilling comprises an emulsification system comprising at least one superamide that may or may not be polyalkoxylated, optionally associated with a non-ionic co-surfactant. The oil-base well fluid comprising such a system can be used at temperatures of up to about 200° C. due to the production of highly temperature-stable reverse emulsions.