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:
Oct. 03, 2023
Filed:
Aug. 16, 2021
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Enrique Antonio Reyes, Tomball, TX (US);
Sarai Santos, Mexico City, MX;
Kristina Henkel Holan, Cypress, TX (US);
Antonio Recio, III, Kingwood, TX (US);
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/528 (2006.01); E21B 37/06 (2006.01); E21B 43/22 (2006.01);
U.S. Cl.
CPC ...
C09K 8/528 (2013.01); E21B 37/06 (2013.01);
Abstract
Methods and treatment fluids for removing mixed scale. A treatment fluid is introduced into a wellbore comprising a mixed scale of interspersed calcium carbonate and calcium sulfate. The treatment fluid comprises: phosphonomethyliminodiacetic acid, N,N-bis(phosphonomethyl)glycine, or a combination thereof; and an aqueous base fluid. The treatment fluid has a pH in a range between about 6 to about 8. The method further comprises contacting the mixed scale with the treatment fluid.