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:
Nov. 24, 2020
Filed:
Jul. 28, 2017
Lnsp Nagghappan, Irvine, CA (US);
John A. Korpiel, Wexford, PA (US);
Veolia Water Solutions & Technologies Support, Saint-Maurice, FR;
LNSP Nagghappan, Irvine, CA (US);
John A. Korpiel, Wexford, PA (US);
Veolia Water Solutions & Technologies Support, Saint-Maurice, FR;
Abstract
An oil or gas recovery process () is disclosed where resulting produced water includes silica. The process entails removing silica from the produced water via a two-stage process. In the first stage, magnesium oxide is injected into a Magnesium Dissolution Reactor () and mixed with the produced water to dissolve magnesium. Effluent from the Magnesium Dissolution Reactor () is directed downstream to a warm lime softener () where one or more alkaline chemicals are added to the produced water to raise the pH to approximately 10.0 to 11.5. Here, silica is co-precipitated with magnesium hydroxide and/or adsorbed onto magnesium hydroxide precipitates.