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:
Sep. 29, 2026
Filed:
Feb. 01, 2022
Lamberti Spa, Albizzate, IT;
Laura Viganò, Parabiago, IT;
Lorenzo Giardini, Genoa, IT;
Letizia Privitera, Sumirago, IT;
Luigi Merli, Saronno, IT;
Daniele Crosta, Gavirate, IT;
Pierangelo Pirovano, Comerio, IT;
Alessandro D'aloia, Novi Ligure, IT;
Cristina Picco, Oleggio, IT;
LAMBERTI SPA, Albizzate, IT;
Abstract
Method for inhibiting the swelling and/or the dispersion of shales during the treatment of subterranean shale formations comprising the steps of: a) providing a subterranean treatment fluid comprising from 0.001 to 10% by weight of a polyester obtained by reacting a dicarboxylic acid having from 2 to 8 carbon atoms with a specific alkoxylated diamine; b) introducing said treatment fluid into a wellbore at a pressure sufficient to treat the subterranean shale formations.