Thinners for invert emulsions

C - Chemistry – Metallurgy – 09 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C09K 8/36 (2006.01) B01F 17/00 (2006.01)

Patent

CA 2433589

A method of reducing the viscosity of invert emulsions and oil-based drilling fluids and well service fluids comprising such emulsions over a broad temperature range is disclosed. The method comprises adding to said invert emulsions of the invention a non-ionic surfactant alone or in combination with a co-thinner having the formula: R""-(C2H4O)n(C3H6O)m(C4H8O)k-H where R"" is a saturated or unsaturated, linear or branched, alkyl radical having about 8 to about 24 carbon atoms, n is a number ranging from about 1 to about 10, m is a number ranging from about 0 to about 10, and k is a number ranging from about 0 to about 10. The non-ionic surfactant is a reaction product of ethylene oxide, propylene oxide and/or butylene oxide with C10-22 carboxylic acids or C10-22 carboxylic acid derivatives containing at least in position 9/10 and/or 13/14 structural units of general formula (I) where R1 is a hydrogen atom or an OH group or a group OR2. R2 is an alkyl group of about 1 to about 18 carbon atoms, an alkenyl group of about 2 to about 18 carbons atoms, or a group of the formula (II): R3 is a hydrogen atom, an alkyl group of about 1 to about 21 carbon atoms or an alkylene group of 2 to 21 carbon atoms.

L'invention concerne un procédé de réduction de la viscosité d'émulsions inverses, de fluides de forage à base d'huile et de fluides d'entretien de puits comprenant lesdites émulsions, sur une vaste plage de températures. Ledit procédé consiste à ajouter auxdites émulsions inverses de l'invention un tensioactif non ionique seul ou combiné à un co-diluant de formule R ?>= >=¿-(C¿2?H¿4?O)¿n?(C¿3?H¿6?O)¿m?(C¿4?H¿8?O)¿k?-H, R ?>= >=¿ représentant un radical alkyle linéaire ou ramifié, saturé ou insaturé, possédant environ 8 à environ 24 atomes de carbone, n vaut un 1 à environ 10, m vaut environ 0 à environ 10, et k vaut environ 0 à environ 10. Le tensioactif non ionique est un produit réactionnel d'oxyde d'éthylène, d'oxyde de propylène et/ou d'oxyde de butylène avec des acides carboxyliques C¿10-22? ou des dérivés d'acide carboxylique C¿10-22? contenant au moins, en position 9/10 et/ou 13/14 les unités structurales de formule générale (I) dans laquelle R¿1? représente un atome d'hydrogène ou un groupe OH ou un groupe OR¿2? ; R¿2? représente un groupe alkyle d'environ 1 à environ 18 atomes de carbone, un groupe alcényle à environ 2 à environ 18 atomes de carbone, ou un groupe de formule (II) dans laquelle R¿3? représente un atome d'hydrogène, un groupe alkyle à environ 1 à environ 21 atomes de carbone ou un groupe alkylène à 2 à 21 atomes de carbone.

LandOfFree

Say what you really think

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

Rating

Thinners for invert emulsions does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFCA-PAI-O-1474825

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