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:
Mar. 05, 2013
Filed:
Jul. 31, 2008
Bethicia B. Prasek, The Woodlands, TX (US);
Raul Navarro, Aberdeen, GB;
Mark Luyster, Houston, TX (US);
Andrew G. K. Jones, Cape Town, ZA;
Latosha Moore, Richmond, TX (US);
Bethicia B. Prasek, The Woodlands, TX (US);
Raul Navarro, Aberdeen, GB;
Mark Luyster, Houston, TX (US);
Andrew G. K. Jones, Cape Town, ZA;
LaTosha Moore, Richmond, TX (US);
M-I L.L.C., Houston, TX (US);
Abstract
A process that includes pumping a first wellbore fluid comprising an oxidative degradable polymer into a wellbore through a subterranean formation; pumping a second wellbore fluid comprising a pH-activated oxidative breaker into the wellbore; pumping a third wellbore fluid comprising a delayed acid source into the wellbore; and allowing the delayed acid source to acidify at least a portion of the wellbore to a pH of less than 7 so as to activate the pH-activated oxidative breaker at the lower pH and degrade the oxidative degradable polymers is disclosed.