Basf Se Corporation

The University of Texas System

The Procter Gamble Company

Jack Tinsley

Christian Bittner

Günter Oetter

Christian E Spindler

Sophie Vogel

Gabriela Alvarez-Juergenson

Sophie Maitro-Vogel

Gabriela Alvarez Jürgenson

Marcus Guzmann

Hans-Christian Raths

Upali Peter Weerasooriya

Gary A Pope

Veronika Wloka

Martin Bock

Marcel Patrik Kienle

Petra Neumann

Gabriela Alvarez-Jürgenson

Rajan Keshav Panandiker

Dieter Hannu Boeckh

Sophia Ebert

Klaus Muehlbach

Ivette Garcia Castro

Guenter Oetter

Rainer Dobrawa

Julie Ann Menkhaus

Frank Huelskoetter

Markus Brym

Oetter Günter

Valentin Cepus

Sebastian Alexander Weiβe

Veronica Wloka

Gabriela Alvarez-Jüergenson

Gabriela Alvarez Jurgenson

Sebastian Alexander Weiße

Gabriela Alvarez Juergenson

Alvarez Juergenson Gabriela

Klaus MÜHLBACH

The present invention relates to a method for producing mineral oil from underground mineral oil deposits, in which an aqueous formulation comprising at least a mixture of alkyl ether carboxylate and corresponding alkyl ether alcohol, where the alkyl ether carboxylate has been prepared from the alkyl ether alcohol and the molar ratio in the mixture of alkyl ether carboxylate:alkyl ether alcohol is from 51:49 to 92:8, is injected through at least one injection well into a mineral oil deposit, where the deposit has a deposit temperature of 55&#xb0; C. to 150&#xb0; C., a crude oil having more than 20&#xb0; API and a deposit water having more than 100 ppm of divalent cations, and crude oil is withdrawn through at least one production well from the deposit. The invention further relates to the preparation of the mixture and to a concentrate comprising the mixture.

Method of mineral oil production

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the aqueous surfactant formulation is injected into a mineral oil deposit through injection wells and crude oil is withdrawn from the deposit through production wells.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 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 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, 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

The present invention relates to processes for tertiary mineral oil production with the aid of a surfactant mixture and to the use of a surfactant mixture for tertiary mineral oil production by means of Winsor type III microemulsion flooding, by injecting a surfactant mixture through at least one aqueous injection borehole into a mineral oil deposit, and withdrawing crude oil from the deposit through at least one production borehole, wherein the surfactant mixture, for the purpose of lowering the interfacial tension between oil and water to &#x3c;0.1 mN/m, comprises at least the following components: (a) one or more polycarboxylate(s) comprising at least 50 mol % of acrylic acid units and/or methacrylic acid units and/or maleic acid units and/or itaconic acid units or salts thereof, and (b) one or more anionic and/or nonionic surfactant(s).

Use of surfactant mixtures of polycarboxylates for microemulsion flooding

The 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 one ionic surfactant of the general formula R&#x2014;O-(D)-(B)-(A)-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.

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

A process for mineral oil production by means of Winsor Type III microemulsion flooding and an aqueous surfactant formulation are disclosed. The aqueous surfactant formulation containing 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.

[object Object]

A process for mineral oil production especially Winsor type III microemulsion flooding, in which an aqueous surfactant formulation which comprises at least one nonionic surfactant having 11 to 40 ethoxy units and a hydrophobic radical having 8 to 32 carbon atoms and at least one further surfactant differing therefrom is forced through injection wells into a mineral oil deposit and crude oil is removed from the deposit through production wells.

Process for mineral oil production using surfactant mixtures

Growing community of inventors

Mannheim, Germany

Jack Tinsley