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:
Aug. 29, 2017
Filed:
Jun. 03, 2014
Akzo Nobel Chemicals International B.v., Amersfoort, NL;
Hisham Nasr-El-Din, College Station, TX (US);
Cornelia Adriana De Wolf, Eerbeek, NL;
Mohammed Ali Ibrahim Sayed, College Station, TX (US);
Estevao De Oliveira Barra, Deventer, NL;
AKZO NOBEL CHEMICALS INTERNATIONAL B.V., Arnhem, NL;
Abstract
The present invention relates to a process to treat a subterranean formation by introducing a composition containing between 1 and 40 wt % on total weight of the composition of a chelating agent selected from the group of glutamic acid N,N-diacetic acid or a salt thereof (GLDA), aspartic acid N,N-diacetic acid or a salt thereof (ASDA), and methylglycine N,N-diacetic acid or a salt thereof (MGDA) into the formation, wherein the process comprises a soaking step.