[12] Patent
[11] Patent No.:GC0004541  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2016                32/2016  
Number of the Decision to Grant the Patent:2016/89720
Date of the Decision to Grant the Patent:18/Dec/2016

[21] Application No.:GC 2012-22600

[22] Filing Date:3/11/2012

[30] Priority:

[33] State [32] Priority date [31] Priority No.
EP
24/10/2011
11186285.0

[72] Inventors:1- Christian Bittner،2- Günter Oetter،3- Jack Tinsley،4- Christian Spindler،5- Gabriela Alvarez Jürgenson،6- Sophie Maitro-Vogel

[73] Owner: BASF SE, 67056 , Ludwigshafen, Germany

[74] Agent: Saba & Co. T.M.P

  

 

  

[51]IPC:
C09K8/584; C11D1/06; C11D1/29; C11D1/34

[56] Cited Documents:

-US 7119125 B1 (O'LENICK JR ANTHONY J[US] ET AL) 10 October 2006
-WO 2011130310 A1 (UNIV TEXAS [US];WEERASOORIYA UPALI P [US]; POPE GARY A[US]; BITTNER)20 October 2011
-WO 2011110503 A1 (BASF SE [DE]; BITTNER CHRISTIAN [DE]; OETTER GUENTER [DE]; TINSLEY JAC) 15 September 2011
-Robert Matthew Dean: 11 Selection and Evaluation of Surfactants for Field Pilots. THESIS Presented to the Faculty of the Graduate School of The University of Texas
at Austin. 1 May 2011
-Products for Enhanced Oil Recovery. Huntsman: Technical Bulletin. 1 January 2010
-WO 2011131549 A1 (BASF SE [DE]; BITTNER CHRISTIAN [DE]; OETTER GUENTER [DE]; TINSLEY JAC) 27 October 2011
 
Examiner: Eng. Ebrahim AlQurashi

[54] PROCESS FOR PRODUCING MINERAL OIL USING SURFACTANTS BASED ON A MIXTURE OF C24 GUERBET, C26 GUERBET, C28 GUERBET-CONTAINING HYDORCARBYL ALKOXYLATES
[57] Abstract: The present invention relates to a surfactant mixture comprising at least three ionic surfactants which differ in terms of the hydrocarbyl moiety (R1)(R2)-CH-CH2- and are of the general formula (I) where R1, R2, A0, 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the aqueous surfactant formulation is injected into a mineral oil deposit through injection wells and crude oil is withdrawn from the deposit through production wells.
No. of claims: 13


 

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