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:
Apr. 08, 2014
Filed:
Jun. 09, 2008
Lucilla Del Gaudio, San Donato Milanese, IT;
Paola Albonico, Milan, IT;
Sandra Cobianco, San Donato Milanese, IT;
Chiara Neva Emiliani, Milan, IT;
Giuseppe Ripa, Belgioioso, IT;
Lucilla Del Gaudio, San Donato Milanese, IT;
Paola Albonico, Milan, IT;
Sandra Cobianco, San Donato Milanese, IT;
Chiara Neva Emiliani, Milan, IT;
Giuseppe Ripa, Belgioioso, IT;
ENI S.p.A., Rome, IT;
Abstract
A water-based fluid, containing: a non-ionic surfactant, which is stable in a temperature range from 10 to 90° C. and soluble in water; and a salt, wherein the non-ionic surfactant contains an alkyl polyglucoside selected from the group consisting of a Calkyl polyglucoside, a Calkyl polyglucoside, and mixtures thereof, and the salt is present, and is present in an amount up to 60%. In addition, a process for preventing the formation of a W/O inverse emulsion or resolving a W/O inverse emulsion that has already formed in an oil well in which an oil-based mud has been employed by injecting the water-based fluid into the oil well.