Henkel Kommanditgesellschaft Auf Aktien

Cognis Deutschland Gmbh & Co. Kg

E. Epple & Co. Gmbh

Other

Cognis Deutschland Gmbh

Elf Antar France

Emery Oleochemicals Gmbh

Baroid Limited

Phrikolat Chemische Erzeugnisse Gmbh

Stephan Von Tapavicza

Heinz Mueller

Claus-Peter Herold

Johann F Fues

Wolfgang Ritter

Thomas Foerster

Michael Neuss

Marcus Claas

Gerhard Stoll

Wolfgang Breuer

Johann-Friedrich Fues

Nadja Herzog

Frank Burbach

Douglas J Grimes

Stuart P Smith

Jean-Marc Braun

Alfred Westfechtel

Paul Birnbrich

Heinz Muller

Peter Kuhm

Robert Leger

Rainer Jeschke

Matthias Fies

Wolfgang Zoellner

Frank Bongardt

Despina Vassilakis

Doris Bell

Christiane Hoeltgen

Bettina Kopp-Holtwiesche

Didier Groffe

Heinz Boettcher

Matthias Hof

Edmund Edel

Klaus-Peter Herold

Helmut Edel

Hartmut Busching

Thomas Reichert

Nathalie Cerqueda

Willy Opitz

The invention relates to a borehole treatment composition containing an aqueous phase and a non-aqueous oil phase, emulsifiers and, where appropriate, further customary additives, the non-aqueous oil phase containing at least one of

Borehole treatment agent containing low-toxic oil phase

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

The invention relates to use of (a) compounds of phosphorus containing at least partly lipophilic organic radicals together with (b) urea and/or urea derivatives in selected quantity ratios of (a) to (b) as a soil additive for biologically controlling plant-parasitic soil nematodes by strengthening the correspondingly antagonistic soil potential, more particularly by strengthening the growth of antagonistic and/or nematicidal rhizosphere bacteria and/or corresponding mycorrhiza strains&mdash;and at the same time strengthening the growth of cultivated plants in soil. The multicomponent mixtures which strengthen bacterial growth are preferably introduced into the region of the plant roots in the form of an aqueous preparation using plant-compatible emulsifiers before and/or during plant growth. Components (a) and (b) are used in such quantity ratios that the ratio by weight of C to N is no higher than 6:1 and preferably no higher than 5:1.

Biogenic control and limitation of the reproduction of parasitic earth nematodes in stock culture

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

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

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.

Growing community of inventors

Erkrath, Germany

Stephan Von Tapavicza