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. 09, 2019
Filed:
Oct. 31, 2013
Applicant:
Amril Ag, Zug, CH;
Inventors:
Diana Mäker, Mettmann, DE;
Heinz Müller, Monheim, DE;
Assignee:
AMRIL AG, Zug, CH;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/06 (2006.01); C09K 8/035 (2006.01); C09K 8/54 (2006.01); C23F 11/10 (2006.01); C23F 11/12 (2006.01); C11D 1/58 (2006.01); C09K 8/40 (2006.01); C09K 8/68 (2006.01); C09K 8/86 (2006.01);
U.S. Cl.
CPC ...
C09K 8/06 (2013.01); C09K 8/035 (2013.01); C09K 8/40 (2013.01); C09K 8/54 (2013.01); C09K 8/68 (2013.01); C09K 8/86 (2013.01); C11D 1/58 (2013.01); C23F 11/10 (2013.01); C23F 11/128 (2013.01); C09K 2208/32 (2013.01);
Abstract
The present invention relates to environmental friendly well treatment fluids comprising water and/or an organic phase and an ester obtainable by reacting a polycarboxylic acid with a hydroxy monocarboxylic acid. The invention also relates to the use of said ester as viscosifier and/or corrosion inhibitor for a well treatment fluid and preferably for a well treatment fluid for offshore well drilling.