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.
申请公布号
CA2694970(C)
申请公布日期
2013.09.24
申请号
CA20082694970
申请日期
2008.07.31
申请人
M-I LLC
发明人
PRASEK, BETHICIA B.;NAVARRO, RAUL;LUYSTER, MARK;JONES, ANDREW G.K.;MOORE, LATOSHA