Viscoelastic surfactant rheology modification

C - Chemistry – Metallurgy – 09 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C09K 8/68 (2006.01) C09K 8/60 (2006.01)

Patent

CA 2575501

A method for shortening the shear recovery time of cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of a rheology enhancer selected from partially hydrolyzed polyvinyl ester and partially hydrolyzed polyacrylates. The rheology enhancer also increases fluid viscosity and very low rheology enhancer concentration is needed. Preferred surfactants are betaines and quaternary amines. The fluids are useful in oilfield treatments, for example fracturing and gravel packing.

L'invention concerne un procédé qui permet de réduire le temps de récupération au cisaillement de systèmes fluides d'un tensioactif viscoélastique cationique, zwitterionique et amphotère, par adjonction d'une quantité efficace d'un activateur de rhéologie choisi parmi un ester polyvinylique partiellement hydrolysé et des polyacrylates partiellement hydrolysés. L'activateur de rhéologie augmente aussi la viscosité du fluide, et une très faible concentration de l'activateur de rhéologie est nécessaire. Des tensioactifs préférés sont des bétaïnes et des amines quaternaires. Les fluides sont utiles dans des traitements de gisements pétrolifères, notamment pour la fracturation et le gravillonnage des crépines.

LandOfFree

Say what you really think

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

Rating

Viscoelastic surfactant rheology modification does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFCA-PAI-O-1709639

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