Instituto Mexicano Del Petroleo

Raúl Hernández Altamirano

Luis Silvestre Zamudio Rivera

Alejandro Ramírez Estrada

Erick Emanuel Luna Rojero

Mirna Pons Jiménez

Rodolfo Cisneros Devora

Violeta Yasmín Mena Cervantes

David Aarón Nieto Álvarez

Violeta Yázmin Mena Cervantes

Jorge Francisco Ramírez Pérez

Sung Jae Ko Kim

América Elizabeth Mendoza Aguilar

Hiram Isaac Beltrán Conde

Raúl Oviedo Roa

José Manuel Martínez Magadan

Rodolfo Cisneros Dévora

Eduardo Buenrostro González

Ana Rocío Cartas Rosado

Violeta Yasmin Mena Cervantes

Simón López Ramírez

Cecilia De Los Ángeles Durán Valencia

Marco Antonio Domínguez Aguilar

Aristeo Estrada Buendía

José Luis Mendoza De La Cruz

Jaquelín Martínez Viramontes

Jorge Alberto García Martínez

The present invention is related to the process of obtaining random terpolymers based on itaconic acid or its isomers, aconitic acid or their isomers and sodium alkenyl sulphonates, through a polymerization in aqueous solution, via free radicals at acid pH in the range of 1.0 to 3.5 and as initiator a redox system. The random terpolymers are characterized for being tolerant to high concentrations of divalent ions, such as calcium, magnesium, strontium and barium. Their use as inhibitors of mineral scale such as calcium carbonate, calcium sulphate, strontium and barium, and clay dispersing, iron oxides, carbonate and calcium sulfate allows for their application in the reservoir or production rig, treated water, sea water and/or connate water can be used as means of transportation. The terpolymer can be used to inhibit and disperse mineral scales present in cooling system and boiler employed in the chemical and oil industry, and is compliant with environmental standards established internationally. They are classified as non-toxic, and can be used in pipes and equipment in the petrochemical industry and transporting freshwater and seawater from offshore and onshore facilities.

Process to obtain random terpolymers derived from itaconic acid, aconitic acid and/or its isomers, and alkenyl sulfonates and use of the product thereof

The present invention is related to the obtaining and using of multifunctional foaming compositions with wettability modifying, corrosion inhibitory and inhibitory/dispersants mineral scale properties with high stability in environments of high temperature, high pressure and tolerance to high concentrations of divalent ions such as calcium, magnesium, strontium and barium. The multifunctional foaming compositions are obtained from the combination of supramolecular complexes resulting from interactions of alkyl amido propyl hydroxysultaines and/or alkyl amido propyl betaines and/or alkyl hydroxysultaines and/or alkyl betaines and anionic surfactant of type alkyl hydroxyl sodium sulfonate and alkenyl sulphonates of sodium, with cationic surfactants as tetra-alkyl ammonium halides and copolymers derivatives of itaconic acid/sodium vinyl sulfonate and/or terpolymers derived from itaconic acid/sodium vinyl sulphonate/aconitic acid. These multinational foaming compositions control the gas channeling and favorably change the wettability and increase the recovery factor of crude oil in naturally fractured reservoirs of carbonate type and heterogeneous lithology. In addition to this, the multifunctional foaming compositions of this invention exhibit anti-corrosive properties in typical environments of production tubing of crude oil and antifouling/dispersants of mineral salts as calcium carbonate, calcium sulfate, barium and strontium in the reservoir and in the production and injection pipelines.

Multifunctional foaming composition with wettability modifying, corrosion inhibitory and mineral scale inhibitory/dispersants properties for high temperature and ultra high salinity

The present invention is related with the obtaining process and use of branched germinal zwitterionic liquids based on either bis-N,N-dialkyl-N-polyether-betaine or bis-N,N-dialkenyl-N-polyether-betaine or bis-N,N-dicycloalkyl-N-polyether-betaine or bis-N,N-diaryl-N-polyether-betaine, to be applied as modifiers of the wettability of rocks such as limestone, dolomite, sandstone, quartz or heteregenous lithologies, under the presence of brines having high content of divalent ions such as calcium, magnesium, barium or strontium, under high temperature and high pressure within enhanced oil recovery processes in order to increase the oil production. The branched germinal zwitterionic liquids of the present invention have moreover the property to act as viscosity reducers of heavy oils having high content of polar fractions, both for extraction and production, and transport and storage operations, so allowing increase the production level of this oil type. An additional advantage shown by the zwitterionic liquids, derived from their molecular structure, is that they can be handed in such a manner that can be dissolved by water, hydrocarbon or other polar and non-polar solvents.

Branched geminal zwitterionic liquids, method for obtaining same and use thereof as wettability modifiers having viscosity reducing properties

The present invention is related with the obtaining process and use of branched germinal zwitterionic liquids based on either bis-N,N-dialkyl-N-polyether-betaine or bis-N, N-dialkenyl-N-polyether-betaine or bis-N, N-dicycloalkyl-N-polyether-betaine or bis-N,N-diaryl-N-polyether-betaine, to be applied as modifiers of the wettability of rocks such as limestone, dolomite, sandstone, quartz or heterogeneous lithologies, under the presence of brines having high content of divalent ions such as calcium, magnesium, barium or strontium, under high temperature and high pressure within enhanced oil recovery processes in order to increase the oil production. The branched germinal zwitterionic liquids of the present invention have moreover the property to act as viscosity reducers of heavy oils having high content of polar fractions, both for extraction and production, and transport and storage operations, so allowing increase the production level of this oil type. An additional advantage shown by the zwitterionic liquids, derived from their molecular structure, is that they can be handed in such a manner that can be dissolved by water, hydrocarbon or other polar and non-polar solvents.

The present invention is related to the obtaining and use of zwitterionic geminal liquids based on hydroxypropyl betaine, as wettability modifiers of rocks such as limestone, dolomite, sandstone, quartz or heterogeneous lithologies, in the presence of brines with high content of divalent ions as calcium, magnesium, barium and strontium, at high temperature and high pressure conditions during the application of enhanced oil recovery processes. The zwitterionic geminal liquids based hydroxypropyl betaine of the present invention have also the property of acting as inhibitors/dispersing of asphaltenes, both at extraction and production operations of petroleum industry, thus allowing to increase the level of crude oil production. An additional advantage presented by zwitterionic geminal liquid based on hydroxypropyl betaine which can be dissolved in distilled water, brine, aliphatic hydrocarbons or other polar and nonpolar solvents.

Hydroxypropyl betaine based zwitterionic geminal liquids, obtaining process and use as wettability modifiers with inhibitory/dispersants properties of asphaltenes

N-alkyl, N-alkenyl, N-cycloalkyl, N-aryl amino or imino propionic acids with an alkyl chain ranging from 6 to 18 carbons, or alkenyl chain from 8 to 30 carbons, are obtained from a reaction process in the absence of solvent at a temperature range from 30 to 180&#xb0; C. and a time of 1 to 10 hours at atmospheric pressure. Formulations composed of N-alkyl or N-alkenyl or N-cycloalkyl or N-aryl amino or imino propionic acids, polyethers derived from propylene oxide or ethylene oxide or copolymer thereof and a solvent consisting of aromatic compounds such as toluene or xylene, diesel or gasoline or alcohols such as isopropanol and ethanol, or mixtures thereof, are obtained inhibit ferrous metal corrosion of pipelines and storage tanks and transport crude oil and liquid fuels. A method inhibiting corrosion of ferrous metals adds an effective amount of the corrosion inhibitor to a petroleum based material such as crude oil and liquid fuels such as gasoline, diesel fuel, and aviation fuel.

Amino and imino propionic acids, process of preparation and use

Base compounds including 1,3-oxazinan-6-one derivatives of N-alkyl or N-alkenyl or N-cycloalkyl or N-aryl propionic acids and paraformaldehyde, and their application as corrosion inhibitors with multifunctional properties serving as inhibitory/dispersant of asphaltene in production processes, transportation, refining and storage of crude oil and derivatives. The corrosion inhibitor with inhibitory/dispersant of asphaltenes properties comprises an active substance base of 1,3-oxaninan-6-ones and hydrocarbon solvents such as benzene, toluene, mixed xylenes, o-xylene, m-xylene and p -xylene, diesel, kerosene, jet fuel, alcohols, aliphatic branched and unbranched alcohols containing from 3 to 10 carbon atoms, such as isopropanol, butanol and pentanol, and mixtures of hydrocarbon solvents with aliphatic branched or unbranched liquid fuels. In addition, a process for obtaining 1,3-oxazinan-6-ones derivatives of N-alkyl or N-alkenyl or N-cycloalkyl or N-aryl propionic acids and paraformaldehyde is described.

Multifunctional composition base 1,3-oxazinan-6-ones with corrosion inhibition and heavy organic compounds inhibition and dispersants and obtaining process

Geminal zwitterionic surfactants based on bis-N-alkyl, bis-N-alkenyl, N-cycloalkyl or N-aryl bis-beta amino acids or salts thereof as wettability modifiers of rocks such as limestone, dolomite, sand, quartz or heterogeneous lithologies.

Geminal zwitterionic surfactants as wettability modifiers in enhanced oil recovery processes

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Mexico City, Mexico

Raúl Hernández Altamirano