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Cognis Deutschland Gmbh & Co. Kg

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Cognis Deutschland Gmbh

Baroid Limited

E. Epple & Co. Gmbh

Phrikolat Chemische Erzeugnisse Gmbh

Claus-Peter Herold

Heinz Mueller

Stephan Von Tapavicza

Wolfgang Breuer

Wolfgang Zoellner

Thomas Foerster

Johann F Fues

Frank Burbach

Douglas J Grimes

Wolfgang Ritter

Michael Neuss

Marcus Claas

Gerhard Stoll

Johann-Friedrich Fues

Andreas Heidbreder

Stefan Podubrin

Stuart P Smith

Jean-Marc Braun

Heinz Boettcher

Karl Heinz Schmid

Herbert Fischer

Alfred Westfechtel

Wolfgang Von Rybinski

Ludwig Schieferstein

Paul Birnbrich

Doris Oberkobusch

Claus Nieendick

Peter Kuhm

Bernd Wahle

Winfried Wichelhaus

Theodor Altenschopfer

Berthold Schreck

Rainer Jeschke

Matthias Fies

Hermann Anzinger

Nadja Herzog

Frank Bongardt

Hans Dolhaine

Martina Hollenbrock

Rafael Pi

Guenther Uphues

Dieter Grodau

Matthias Hof

Didier Groffe

Robert Schuetz

Jean Rouet

Jacques Groffe

Stefan Von Tapavicza

Claudia Meyer

Stephan V Tapavicza

Willy Opitz

Edmund Edel

Helmut Edel

Malcolm Ellice

Stephan Von Tapavizca

Stephan Van Tapavizca

Processes for producing polyester amides, by reacting a polyisobutylene with a first reagent selected from the group consisting of at least monounsaturated acids having from 3 to 21 carbon atoms and derivatives thereof; and a second reagent selected from the group consisting of monoethanolamine and alkylamines of the general formula R&#x2014;NH, wherein R represents an alkyl group having from 1 to 4 carbon atoms; are described. The polyester amides thus produced and their uses in stabilizing asphaltenes in crude oil and crude oil derivatives are also described.

Methods for producing polyester amides based on polyisobutylenes, polyester amides produced thereby, and uses therefor in stabilizing crude oil

A process for imparting lubricity to an aqueous drilling fluid used in geological exploration involving: (a) providing an aqueous drilling fluid; (b) providing a lubricant component containing a partial glyceride of predominantly unsaturated fatty acids having from about 16 to 24 carbon atoms; and (c) introducing the partial glyceride into the aqueous drilling fluid.

Lubricants for drilling fluids

The invention relates to the use of linear and/or branched fatty alcohols containing at least 12 carbon atoms in the molecule and/or to the use of mixtures of such fatty alcohols with carboxylic acid esters as a lubricating additive in water-based drilling fluids for their use in geological exploration by drilling. The fatty-alcohol-based lubricants or lubricant systems are particularly suitable for use in water-based alkali metal silicate drilling muds which are known to be distinguished by comparatively high pH values. The additives according to the invention combine their lubricating effect with a foam-suppressing effect, i.e. prevent unwanted foaming.

Use of selected fatty alcohols and their mixtures with carboxylic acid esters as lubricant components in water-based drilling fluid systems for soil exploration

The use is disclosed of at least substantially water-insoluble ethers which are fluid and/or at least plastically deformable at working temperature and have flash points of at least 80&deg; C., of mono- and/or polyfunctional alcohols of natural and/or synthetic origin or corresponding solutions of such ethers in ecologically acceptable water-insoluble oils as the dispersed oil phase of water-based O/W-emulsion drilling fluids which are suitable for the environmentally acceptable development of geological formations and which contain, if desired, insoluble, finely particulate weighting agents for the formation of water-based O/W-emulsion drilling muds and/or further additives, such as emulsifiers, fluid-loss additives, wetting agents, alkali reserves and/or auxiliary substances for the inhibition of drilled rock of high water-sensitivity.

Use of selected oleophilic ethers in water-based drilling fluids of the O/W emulsion type and corresponding drilling fluids with improved ecological acceptability

Process for removing solid asphalt residues produced in the petroleum industry

Low-foam surfactant concentrates for use in the domain of plant growth stimulation

Use of selected inhibitors against the formation of solid organo-based incrustations from fluid hydrocarbon mixtures

A process for breaking an emulsion into a water phase and an oil phase involving: (a) providing an emulsion containing an oil phase and a water phase; (b) providing an alkoxylated C,carboxylic acid ester derived by the addition of ethylene oxide and/or propylene oxide onto a ring opened epoxidized C,carboxylic acid triglyceride which is ring opened with a C,carboxylic acid; and (c) contacting the emulsion with a demulsifying effective amount of the alkoxylated C,carboxylic acid ester. Said process has application on crude oil emulsions.

Method for demulsifying emulsions

A process for cleaning boreholes, drilling equipment and drill cuttings is presented involving the application of a cleaning composition to surfaces and the subsequent removal of the cleaning composition and soils. The cleaning composition contains a cleaning additive having alkoxylation products obtained by the reaction of ethylene oxide, propylene oxide, butylene oxide or mixtures thereof with an OH-containing C,carboxylic acid or derivative thereof, where structural units corresponding to formula (I):

Use of biodegradable alcoxylation products for cleaning boreholes, boring instruments or borings

A process useful for protecting metal surfaces against corrosion in is presented involving: (a) forming a corrosion inhibitor having a compound corresponding to formula (I):

Method for protecting metal surfaces against corrosion in liquid or gaseous media

Multiphase lubricant concentrates for use in water based systems in the field of exploratory soil drilling

The invention relates to the use of oil-soluble oleophilic organic liquid phases&mdash;flowable at temperatures of 0 to 10&deg; C.&mdash;from the classes of corresponding monocarboxylic and/or polycarboxylic acid esters, carbonic acid esters, fatty alcohols and their oligoalkoxides and/or ethers as the at least predominant part of the liquid phase in storage-stable homogeneous mixtures with guar and/or water-soluble guar derivatives for their use in water-based borehole servicing fluids.

Aqueous swellable compositions of guar gum and guar gum derivatives in oleophilic liquids and their use

Process for the facilitated waste disposal of working substances based

Method of boosting surface consolidation of soil threatened by erosion

The invention relates to flowable and pumpable multicomponent mixtures based on a multiphase mixture of water and oil containing emulsifiers and, if desired, other soluble, emulsifiable and/or dispersible auxiliaries for their use in exploration by drilling and/or for the further treatment of the wells thus drilled. The invention is characterized by the use of emulsifiers or emulsifier systems which, in the particular multicomponent mixture in question, lead to temperature-controlled phase inversion at a phase inversion temperature (PIT) in a temperature range of which the upper limit is so far below the working temperature of the multicomponent mixture in geological exploration that the water-based part of the multicomponent mixture is present as a disperse (invert) phase in the continuous oil phase (w/o invert emulsion) while the lower limit of this temperature range enables the multicomponent mixture to be converted into an o/w emulsion with a continuous aqueous phase. At least partly nonionic emulsifiers or emulsifier systems with a PIT of 0 to 100.degree. C. are particularly suitable. The invention enables the requirements in regard to technical performance, ecological compatibility and cost/effectiveness ratio to be optimally satisfied.

Multicomponent mixtures for use in geological exploration

Growing community of inventors

Mettmann, Germany

Claus-Peter Herold