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. 28, 2006
Filed:
Nov. 13, 2001
Armando Marcotullio, Milan, IT;
Raffaella Monga, Milan, IT;
Giuseppe Belmonte, Turin, IT;
Angelo Calderoni, Milan, IT;
Giovanni Ferrari, Piacenza, IT;
Armando Marcotullio, Milan, IT;
Raffaella Monga, Milan, IT;
Giuseppe Belmonte, Turin, IT;
Angelo Calderoni, Milan, IT;
Giovanni Ferrari, Piacenza, IT;
ENI S.p.A., Rome, IT;
ENITECNOLOGIE S.p.A., San Donato Milanese, IT;
Abstract
Process for recovering at least 70% of hollow glass microspheres having an average diameter, according to the ASTM D1214-1989, ranging from 5 to 200 μm contained in a mixture of drilling mud and cuttings which comprises: a) screening, if necessary, the mixture through one or more 5 to 20 mesh sieves; b) feeding the screened mixture to one or more cyclones and/or hydrocyclones arranged in series, each of which is fed with a volume flow-rate from 1.5 to 10 times higher than the maximum nominal operating value.