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:
Feb. 02, 2016
Filed:
Dec. 13, 2011
Marie-francoise Gayral Chirac, Viviers-les-Montagnes, FR;
Jerome Guilbot, Castres, FR;
Andre Benattar, Castres, FR;
Marie-Francoise Gayral Chirac, Viviers-les-Montagnes, FR;
Jerome Guilbot, Castres, FR;
Andre Benattar, Castres, FR;
Abstract
A process for drilling cavities in subterranean formations includes a step of removal of the drill cuttings using an aqueous fluid in the form of a foam, obtained by mixing: an aqueous composition (Ci) including, per 100% by weight: from 0.5% by weight to 25% by weight of a compound of formula (I): R—C(O)—NH—CH(COOM)-(CH)—COOM' (I) in which n represents an integer equal to 1 or 2, Rrepresents a linear or branched, saturated or unsaturated aliphatic hydrocarbon-based radical including from eight to eighteen carbon atoms, M represents a monovalent cation and M′, which is identical to or different from M, represents a hydrogen atom or a monovalent cation; or of a mixture of compounds of formula (I), and from 75% to 99.5% by weight of water, with a gas or a mixture of gases, chosen from air, nitrogen or carbon dioxide.