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:
Dec. 22, 2020
Filed:
Mar. 27, 2018
Applicants:
National Technology & Engineering Solutions of Sandia, Llc, Albuquerque, NM (US);
Stc.unm, Albuquerque, NM (US);
Inventors:
Richard A. Kemp, Albuquerque, NM (US);
Timothy J. Boyle, Albuquerque, NM (US);
Assignees:
National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US);
STC.UNM, Albuquerque, NM (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/11 (2012.01); E21B 43/267 (2006.01); C07D 487/22 (2006.01); C09B 47/04 (2006.01);
U.S. Cl.
CPC ...
E21B 47/11 (2020.05); E21B 43/267 (2013.01); C07D 487/22 (2013.01); C09B 47/045 (2013.01);
Abstract
The present invention relates to modified proppants and methods of using the modified proppants that use metal ligand tracers to characterize subterranean fluid flow. The metal and ligands are best chosen to be a strongly-coordinating, chelating ligand with a functional group for the chosen flow environment.