Delayed breaker

E - Fixed Constructions – 21 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

E21B 43/26 (2006.01)

Patent

CA 2694970

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.

Cette invention se rapporte à un processus qui comprend les étapes consistant à pomper un premier fluide de forage comprenant un polymère dégradable par oxydation dans un puits de forage à travers une formation souterraine ; pomper un deuxième fluide de forage comprenant un agent de rupture oxydant activé par pH dans le puits de forage ; pomper un troisième fluide de forage comprenant une source d'acide à action retardée dans le puits de forage ; et permettre à la source d'acide à action retardée d'acidifier au moins une partie du puits de forage à un pH inférieur à 7 de manière à activer l'agent de rupture oxydant activé par pH au pH inférieur et à dégrader les polymères dégradables oxydants.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Delayed breaker does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Delayed breaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Delayed breaker will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1514709

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.