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:
Jun. 21, 2022
Filed:
Jul. 17, 2018
Halliburton Energy Services, Inc., Houston, TX (US);
Enrique Antonio Reyes, Tomball, TX (US);
Kristina Henkel Holan, Cypress, TX (US);
Aaron Michael Beuterbaugh, Spring, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
Provided are treatment fluids and associated methods for removing metal sulfate scale. An example method includes introducing a treatment fluid into a wellbore comprising metal sulfate scale, wherein the treatment fluid comprises: a phosphonated aminocarboxylate; a carboxylated alkanol, a carboxylated alkyl halide, and/or a multicarboxylic acid; an anion; and an aqueous base fluid; wherein the treatment fluid has a pH in a range between about 7 to about 13. The method further includes contacting the metal sulfate scale with the treatment fluid; wherein the treatment fluid is allowed to remain static during the contacting; and removing the treatment fluid from the wellbore.