Basf Se Corporation

Basf Construction Polymers Gmbh

Halliburton Energy Services, Inc.

The University of Texas System

Basf Canada

Basf Contruction Polymers Gmbh

Degussa Construction Polymers Gmbh

Christian E Spindler

Christian Bittner

Jack Tinsley

Günter Oetter

Sophie Vogel

Gabriela Alvarez-Juergenson

Roland Reichenbach-Klinke

Sophie Maitro-Vogel

Johann Plank

Björn Langlotz

Gabriela Alvarez Jürgenson

Marcus Guzmann

Veronika Wloka

Benjamin Wenzke

Upali Peter Weerasooriya

Gary A Pope

Martin Bock

Jack F Tinsley

Gregor Keilhofer

Petra Neumann

Andrea Fenchl

Uwe Huber

Samuel Jason Lewis

Guenter Oetter

Thomas Ostrowski

Michael J Szymanski

Jan Pieter Vijn

Ulrich Annen

Markus Klumpe

Oetter Günter

Andrea Assmann

Nicole Meier

Gabriela Alvarez-Jürgenson

Martin Matzinger

Christian Nitschke

Gabriela Alvarez-Jüergenson

Veronica Wloka

Ian Robert Macefield

Russell Giesbrecht

Andrea Aβmann

Gabriela Alvarez Jurgenson

The present invention relates to a surfactant mixture comprising at least three ionic surfactants which differ in terms of the hydrocarbyl moiety (R)(R)&#x2014;CH&#x2014;CH&#x2014; and are of the general formula (I) where R, R, A, k, X, o, Y, a, b, M are each as defined in the description and the claims. The invention further relates to the use and preparation thereof, and to aqueous surfactant formulations comprising the mixtures, and to processes for producing mineral oil by means of Winsor type III microemulsion flooding, in which the aqueous surfactant formulation is injected into a mineral oil deposit through injection wells and crude oil is withdrawn from the deposit through production wells.

Process for producing mineral oil using surfactants based on a mixture of C24 guerbet, C26 guerbet, C28 guerbet-containing hydrocarbyl alkoxylates

The present invention relates to water-soluble hydrophobically associating copolymers which are obtained in the presence of a nonpolymerizable surface-active compound and which comprise novel hydrophobically associating monomers. The monomers comprise an ethylenically unsaturated group and a polyether block, the polyether block comprising a hydrophilic polyethyleneoxy block and a hydrophobic polyalkyleneoxy block consisting of alkyleneoxy units having at least 4 carbon atoms. The monomers may optionally have a terminal polyethyleneoxy block. The invention further relates to processes for preparing the copolymers and to the use thereof.

Water-soluble, hydrophobically associating copolymers having novel hydrophobically associating monomers

A surfactant and a surfactant formulation comprising at least one ionic surfactant of the general formula R&#x2014;O-(D)-(B)-(A)-XYMwhere Ris a linear or branched, saturated or unsaturated, aliphatic and/or aromatic hydrocarbon radical having 8 to 30 carbon atoms, A is ethyleneoxy, B is propyleneoxy, and D is butyleneoxy, l is from 0 to 99, m is from 0 to 99 and n is from 1 to 99, X is an alkyl or alkylene group having 0 to 10 carbon atoms, Mis a cation, and Yis selected from the group of sulfate groups, sulfonate groups, carboxylate groups and phosphate groups.

Process for extracting mineral oil using surfactants based on butylene oxide-containing alkyl alkoxylates

The present invention relates to a process for mineral oil extraction by means of Winsor type III microemulsion flooding, in which an aqueous surfactant formulation comprising at least three ionic surfactants which are different with regard to the alkyl moiety (R)(R)&#x2014;CH&#x2014;CH&#x2014; and are of the general formula (R)(R)&#x2014;CH&#x2014;CH&#x2014;O-(D)-(B)-(A)-XYa/bMis injected through injection boreholes into a mineral oil deposit, and crude oil is withdrawn from the deposit through production boreholes. The invention further relates to surfactant formulations of ionic surfactants of the general formula.

Process for producing mineral oil using surfactants based on a mixture of C32 guerbet-, C34 guerbet-, C36 guerbet-containing alkyl alkoxylates

Process for tertiary mineral oil production in which an aqueous injection fluid comprising at least a water soluble polyacrylamide-(co)polymer dissolved in the aqueous fluid is injected into a mineral oil deposit and the aqueous injection fluid is prepared by mixing a liquid dispersion polymer composition comprising particles of polyacrylamide-(co)polymers dispersed in an organic, hydrophobic liquid with an aqueous fluid. Preferably, the process is carried out on an off-shore production site.

Process for tertiary mineral oil production

The present invention relates to a process for preparing hydrophobically associating macromonomers M and to the novel macromonomers prepared by means of the process according to the invention. The macromonomers M comprise a copolymerizable, ethylenically unsaturated group and a polyether structure in block form, the latter consisting of a polyethyleneoxy block and a hydrophobic polyalkyleneoxy block consisting of alkyleneoxy units having at least 4 carbon atoms. Optionally, the macromonomers M may have a terminal polyethyleneoxy block. The macromonomers prepared by the process according to the invention are suitable for reaction with further monomers, especially with acrylamide, to give a water-soluble, hydrophobically associating copolymer.

Process for preparing a macromonomer

The invention relates to a process for mineral oil production by means of Winsor Type III microemulsion flooding, in which an aqueous surfactant formulation comprising at least one ionic surfactant of the general formula R&#x2014;O&#x2014;(CHC(CH)HO)(CHCHO)&#x2014;XYMis injected through injection boreholes into a mineral oil deposit, and crude oil is withdrawn from the deposit through production boreholes. The invention further relates to ionic surfactants of the general formula.

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Process for producing mineral oil using surfactants based on a mixture of C20 Guerbet-, C22 Guerbet-, C24 Guerbet-containing hydrocarbyl alkoxylates

Process for producing mineral oil using surfactants based on a mixture of C24 guerbet-, C26 guerbet-, C28-guerbet containing hydrocarbyl alkoxylates

Process for producing mineral oil using surfactants based on a mixture of C28 Guerbet, C30 Guerbet, C32 Guerbet-containing hydrocarbyl alkoxylates

Compositions and methods of synthesis of anionic surfactants by alkoxylation of a Guerbet alcohol (GA) having 12 to 36 carbon atoms using butylene oxide, and optionally propylene oxide and/or ethylene oxide followed by the incorporation of a terminal anionic group are described herein. The GA of the present invention is made by a facile and inexpensive method that involves high temperature base catalyzed dimerization of alcohols with 6 to 18 carbon atoms. The large hydrophobe ether surfactants of the present invention find uses in enhanced oil recovery (EOR) applications where it is used for solubilization and mobilization of oil and for environmental cleanup. Further, the hydrophobe alkoxylated GA without anionic terminal group can be used as an ultra-high molecular weight non-ionic surfactant.

Anionic polyalkoxy group comprising surfactants on basis of guerbet-alcohols, method of manufacture and use in enhanced oil recovery (EOR) applications

Process for producing mineral oil using surfactants based on a mixture of C32 Guerbet-, C34 Guerbet-, C36 Guerbet-containing alkyl alkoxylates

A process for mineral oil production, in which an aqueous formulation comprising at least one water-soluble, hydrophobically associating copolymer is injected through at least one injection borehole into a mineral oil deposit, and crude oil is withdrawn from the deposit having a deposit temperature of 35&#xb0; C. to 120&#xb0; C., preferably 40&#xb0; C. to 90&#xb0; C., through at least one production borehole, wherein the water-soluble, hydrophobically associating copolymer comprises at least acrylamide or derivatives thereof, a monoethylenically unsaturated monomer having anionic groups and a monoethylenically unsaturated monomer which can bring about the association of the copolymer.

Process for mineral oil production using hydrophobically associating copolymers

A process for mineral oil production, especially Winsor type III microemulsion flooding, in which an aqueous surfactant formulation which comprises at least one alkylpolyalkoxysulfate comprising propoxy groups, and at least one further surfactant differing therefrom is used, is forced through injection wells into a mineral oil deposit and crude oil is removed from the deposit through production wells. The alkylpolyalkoxysulfate comprising propoxy groups is prepared in this case by sulfating an alkoxylated alcohol, the alkoxylated alcohol being prepared by alkoxylating an alcohol using double metal cyanide catalysts or double hydroxide clays.

Process for tertiary mineral oil production using surfactant mixtures

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Wasserburg am Inn, Germany

Christian E Spindler