General Electric Company

Ge Betz, Inc.

Halliburton Energy Services, Inc.

Hercules Corporation

Betzdearborn, Inc.

Sherif Eldin

John Link

Jay Paul Deville

Cato Russell McDaniel

Alan E Goliaszewski

David Birenbaum Engel

John G Link

Vinod Kumar Rai

Alagarsamy Subbiah

Grace B Arhancet

Tiffany N Morris

Mary King

Harold James Eggert

Lawrence John Karas

Ronnie L Deason

Phillip Wayne Livanec

H Kelly Herrington

Kevin S Solomon

Earl E Siders

Frank Denison

Thomas K Brow

Alagarsamy A Subbiah

Method comprising the steps of obtaining a sample of a return drilling fluid, the return drilling fluid containing a tagged detectable additive, the tagged detectable additive comprising a polymer comprising at least one chemical tag bonded to the polymer; and determining a concentration of the tagged detectable additive in the return drilling fluid based on a spectroscopic signal of the sample. The tagged detectable additive may include a polymer comprising at least one chemical tag bonded to the polymer.

Chemically tagged polymers for simplified quantification and related methods

Methods and compositions are provided for inhibiting the polymerization of a vinyl aromatic monomer, such as styrene monomer, during elevated temperature processing thereof or during storage or shipment of polymer containing product. The compositions comprise a combination of a quinone methide derivative A) and a phenol compound B). The methods comprise adding from about 1-10,000 ppm of the combination to the monomer containing medium, per one million parts of the monomer.

Methods and compositions for inhibiting vinyl aromatic monomer polymerization

A small-scale dynamic simulator for crude oil refinery desalters has a pressurized oil deviblis configured to hold a supply of crude oil and a water deviblis configured to hold a supply of wash water. At least one chemical feed pump selectively adds emulsion breaker chemicals to the desalter simulator and a low shear metering pump is configured to pump crude oil and wash water through the desalter simulator. An emulsion forming device forms a crude oil-wash water emulsion that is then received in a desalter vessel. The desalting vessel is fitted with electric grids which simulate those found in electric desalters. The emulsion is resolved within the desalter vessel with the assistance of the emulsion breaker chemicals so the wash water and crude oil form distinct phases, with substantially desalted crude oil removed from an upper portion of the desalter vessel and substantially oil-free wash water removed from a bottom portion of the desalter vessel. A portion of the desalter vessel is substantially transparent to allow visualization of the demulsification process and at least one light source is positioned adjacent to the desalter vessel to aid in visualization of a rag layer formed in the desalter vessel. A heated jacket surrounds the desalter vessel to maintain the desalter vessel at the desired temperature.

Dynamic desalter simulator

A method for dispersing polymerization by-products and maintaining said by-products in suspension in a hydrocarbon processing system during acrylic acid and acrylate monomer formation is disclosed, which includes adding to the monomer an effective inhibiting amount of an N-alkyl polyalkenyl succinimide dispersant.

Use of polyalkenyl succinimides in acrylic acid production

Compositions and methods for inhibiting polymerization of ethylenically unsaturated monomers are provided. The compositions include a water-soluble phenylenediamine composition.

Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers

Quinone methide derivatives such as 4-benzylidene-2,6-di-tert-butyl-cyclohexa-2,5 dienone are used to inhibit styrene monomer polymerization in the dehydrogenator portion of a styrene monomer production system. The inhibitor contacts the dehydrogenation effluent and does not partition in substantial amounts to the aqueous phase that is separated in the phase separator.

Polymerization inhibitor for styrene dehydrogenation units

A method of inhibiting fouling and viscosity increase in hydrocarbon streams including ethylenically unsaturated monomers is disclosed. The method includes the step of adding to the hydrocarbon stream an effective amount of one or more quinone methides of the formula:wherein R, R, and Rare independently selected from the group consisting of H, &#x2014;OH, &#x2014;SH, &#x2014;NH, alkyl, cycloalkyl, heterocyclo, and aryl.

Inhibition of viscosity increase and fouling in hydrocarbon streams including unsaturation

Methods and compositions for inhibiting the polymerization of vinyl monomers are disclosed. Combinations of aminophenol compounds and nitroxyl radical compounds are effective at inhibiting vinyl monomer polymerization under both processing and storage conditions.

Methods and compositions for inhibiting polymerization of vinyl monomers

Methods and compositions for inhibiting the polymerization of vinyl monomers are disclosed. Combinations of nitroxyl compounds and aliphatic amines are effective at inhibiting the polymerization of vinyl monomers under both processing and storage conditions.

Method, composition and mixture for inhibiting monomer polymerization

Methods and compositions for inhibiting the polymerization of ethylenically unsaturated hydrocarbons are disclosed. Combinations of aminophenol compound and either of phenylenediamine or hydroxylamine compounds are effective at inhibiting this polymerization under both processing and storage conditions.

Growing community of inventors

Houston, TX, United States of America

Sherif Eldin