Basf Se Corporation

Markus Ostermayr

Faissal-Ali El-Toufaili

Dennis Loesch

Tobias Joachim Zimmermann

Dirk Meckelnburg

Hazel Sprafke

Jack F Tinsley

Anna-Corina Schmidt

Brent Busby

Kerstin Schierle-Arndt

Stephan Maurer

Michael Lutz

Jürgen Wortmann

Michael Ladenberger

Katharina Federsel

Bjoern Langlotz

Oliver Soetje

John Scott Barratt

Gabriela Eugenia Fonseca Zepeda

Bernd Schube

Sandra Jeck

Tobias Bringmann

John Barratt

Daniel Barrera-Medrano

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 for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the manufacturing steps are allocated to two different locations A and B and the process comprises the step of transporting an aqueous polyacrylamide gel hold in a transportable polymerization unit from a location A to a location B. The transportable polymerization unit comprises a cylindrical upper part, a conical part at its lower end, feeds for the aqueous monomer solution, a closable bottom opening, and means allowing to deploy the polymerization unit in a vertical manner.

Process for producing aqueous polyacrylamide solutions

Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the manufacturing steps are allocated to two different locations A and B and the process comprises the step of transporting an aqueous polyacrylamide gel hold in a transportable polymerization unit from a location A to a location B. Modular, relocatable plant for manufacturing aqueous polyacrylamide solutions wherein the units of the plant are located at two different locations A and B.

Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the process is carried out in a modular, relocatable plant. The plant preferably is deployed at a location at which aqueous polyacrylamide solutions are used, for example on an oilfield or in a mining area.

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 invention relates to a method for operating a linearly concentrating solar power plant (), in which a heat transfer medium flows through a pipeline loop () having at least one receiver, the heat transfer medium having a flow velocity which is such that the flow in the pipeline loop () is turbulent, at least part of the heat transfer medium, upon exit from the pipeline loop (), being extracted and recirculated into the pipeline loop (). Furthermore, the invention relates to a linearly concentrating solar power plant with at least one pipeline loop () having at least one receiver in which a heat transfer medium flowing through the pipeline loop () is heated by irradiating solar energy, a mixing device () being comprised, in which at least part of the heat transfer medium flowing through the pipeline loop () is mixed with heat transfer medium to be delivered.

Method for operating a linear concentrator solar power plant, and linear concentrator solar power plant

A process for producing an aqueous polymer solution, including: (a) providing a hydrated polymer that has been prepared by aqueous solution polymerisation of ethylenically unsaturated monomers, which hydrated polymer contains at least 10% by weight active polymer; (b) cutting the hydrated polymer by subjecting the hydrated polymer to at least one cutting stage containing at least one stream of aqueous liquid at a pressure of at least 150 bar to reduce the size of the hydrated polymer; and (c) dissolving the hydrated polymer in an aqueous liquid so as to obtain an aqueous polymer solution. An apparatus for producing an aqueous polymer solution.

Growing community of inventors

Ludwigshafen, Germany

Markus Ostermayr