Basf Se Corporation

Basf Corporation

The University of Texas System

Jack F Tinsley

Christian Bittner

Faissal-Ali El-Toufaili

Dennis Loesch

Tobias Joachim Zimmermann

Markus Ostermayr

Anna-Corina Schmidt

Brent Busby

Günter Oetter

Christian E Spindler

Gabriela Alvarez-Juergenson

Marcus Guzmann

Hans-Christian Raths

Upali Peter Weerasooriya

Gary A Pope

Guenter Oetter

Sophie Maitro-Vogel

Veronika Wloka

Sophie Vogel

Marcel Patrik Kienle

Vandana Kurkal-Siebert

Sebastian Alexander Weisse

Gabriela Alvarez Jürgenson

Tanhee Ary Galindo

Rimassa Shawn

Gabriela Alvarez Jurgenson

Daniel Barrera-Medrano

Christian Spindler

Sohie Maitrovogel

Vogel Sophie

Sophie Maitrovogel

Process of providing polyacrylamides to a site-of-use comprising at least the steps of mixing a polyacrylamide powder at a manufacturing site with an aqueous liquid, thereby obtaining a homogeneous aqueous polyacrylamide concentrate, transporting said concentrate in a transport unit from the manufacturing site to the site-of-use, and removing the homogeneous aqueous concentrate from the transport unit at the site-of-use. Process of treating subterranean, oil and/or gas bearing formations by injecting an aqueous treatment fluid into at least one wellbore, wherein the aqueous treatment fluid is manufactured by mixing at least an aqueous base fluid with said homogeneous aqueous polyacrylamide concentrate at the site-of-use.

Method of providing homogeneous aqueous polyacrylamide concentrates and use thereof

Process for producing aqueous polyacrylamide concentrates by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel, comminuting said aqueous polyacrylamide gel and mixing it with an aqueous liquid, wherein the manufacturing steps are allocated to two different locations A and B and the process comprises the step of transporting an aqueous polyacrylamide concentrate hold in a suitable transport unit from a location A to a location B. Modular, relocatable plant for manufacturing aqueous polyacrylamide, wherein the units of the plant are located at two different locations A and B.

Process for producing an aqueous polyacrylamide concentrate

Process of fracturing subterranean, oil-and/or gas-bearing formations by injecting an aqueous fracturing fluid into a wellbore at a rate and pressure sufficient to penetrate into the formation, and to initiate or extend fractures in the formation, wherein the aqueous fracturing fluid is obtained by mixing at least an aqueous base fluid and an aqueous polyacrylamide concentrate having a concentration of 3.1 to 14.9% by weight of polyacrylamides, relating to the total of all components of the aqueous polyacrylamide concentrate, and wherein at least a part of the aqueous fracturing fluid injected additionally comprises a proppant.

Process of fracturing subterranean formations

The present invention relates to a method for the production of crude oil from subterranean, oil-bearing formations comprising at least the following steps of providing an aqueous surfactant composition comprising water and a surfactant mixture, injecting said surfactant composition into the subterranean, oil-bearing formation through at least one injection well, thereby reducing the crude oil-water interfacial tension to less than 0.1 mN/m, and withdrawing crude oil from the formation through at least one production well, wherein the surfactant mixture comprises at least a surfactant (A) having the general formula R&#x2014;O&#x2014;(CHCH(R)O)&#x2014;(CHCH(CH)O)&#x2014;(CHCHO)&#x2014;R&#x2014;YM(I) and a solubility enhancer (B) having the general formula R&#x2014;O&#x2014;(CHCH(CH)O)&#x2014;(CHCHO)&#x2014;R&#x2014;YM(II), wherein Rto R, a, b, c, x, y, Y and M have the meaning as defined the the description and claims. The invention further relates to said aqueous surfactant composition and methods for preparing the same as well as the use of solubility enhancer (B) for enhancing the solubility of anionic surfactant (A).

Solubility enhancers on basis of allyl alcohol for aqueous surfactant formulations for enhanced oil recovery

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

Method of fracturing subterranean formations using aqueous compositions comprising at least an aqueous base fluid, proppants, a viscosifier, at least one flowback aid and removing at least a portion of the aqueous fracturing fluid from the formation after fracturing. The flowback aid is selected from the group of alkyl or alkenyl polyglucosides, carboxylated alkyl or alkenyl polyglucosides and alkoxylated branched alcohols.

Method of fracturing a subterranean formation with use flowback aids

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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Growing community of inventors

Houston, TX, United States of America

Jack F Tinsley