Instituto Mexicano Del Petroleo

Arquimedes Estrada Martinez

Flavio Salvador Vazquez Moreno

Fernando Alvarez Ramirez

Alfonso Lopez Ortega

Cesar Andres Flores Sandoval

Laura Veronica Castro Sotelo

Eugenio Alejandro Flores Oropeza

Jose Gonzalo Hernandez Cortez

Reyna Reyes Martinez

Jose Luis Rodolfo Benitez Aguilar

Rafael Martinez Palou

Enrique Cevada Maya

Salvador Castillo Cervantes

Aristeo Estrada Buendia

Jesus Marin Cruz

Luis Manuel Quej Ake

Araceli Vega Paz

Luisa Elena Montiel Sanchez

Veronica Sanchez Garcia

Edgar Ivan Hernandez Carbajal

Amalia Tobon Cervantes

Nancy Navarro Ordonez

Rafael Martinex Palou

Jose Luis Benitez Aguilar

Compounds and compositions are used as corrosion inhibitors for pipelines for crude oil containing water with high salt concentrations. The inhibitors are ionic liquids, imidazoles, benzotriazoles, and mixtures thereof. The composition includes two or more members of the inhibitors with a solvent. The inhibitors reduce corrosion of metallic surfaces of the pipelines containing crude oil having 0.2 and 40 wt % water, 10,000 to 70,000 ppm salt, and 9 to 600 ppm hydrogen sulfide. A synergic effect is provided by two or more different inhibitors. This synergy is derived from interactions with the metallic surface, among themselves or with the corrosive medium depending on the chain length, to inhibit the corrosion with decrease of the formulation dose. The composition can be a ternary formulation of the three families or two components of one family and a third component of a different family.

Corrosion inhibition composition for pipelines, process of elaboration and synthesis

This invention is directed to a method for defoaming crude oil by the addition of copolymers based on silicone free alkyl acrylics defoamers for crude oils with densities between 10 and 40&#xb0; API. The alkyl acrylic copolymers at conditions similar to those of gas-liquid separators are efficient foam formation inhibitors in heavy and super-heavy crude oils to reduce foam levels between 15 and 50% faster than non-dosed crude oil. Some acrylic copolymers exhibited a greater efficiency as defoamers than commercial silicones, which promote the defoaming only 20 or 25 vol % faster than the natural foam collapse. Silicones as defoamers present serious problems as the formation of deposits and the deactivation of catalysts in the refining processes. These problems have originated a series of interdictions to use silicon based defoamers and new chemical compounds completely silicon free are required to control the foam levels in the gas/petroleum separation tanks.

Formulations of copolymers based on alkyl acrylates used as defoamers of heavy and super-heavy crude oils

The present invention is directed to a formulation of corrosion inhibitors for corrosion control of low carbon steel piping, carrying different fuels products, obtained in refineries or petrochemical processes. The composition comprises active imidazoline inhibitors derived from vegetable oil selected from the group consisting of sunflower, canola, soybean, safflower, corn and mixtures thereof that are reacted with a polyalkylated polyamines such as diethylenetriamines (DETA), triethylenetetramine (TETA) and tetraethylenepentamine (TEPA). The imidazoline is reacted with 1 to 3 moles of a carboxylic acid having 2 to 6 carbon atoms. The product obtained is formulated with 50 to 60% weight of an aromatic solvent and 10 to 20 wt % of an alcohol. The compositions were evaluated in sour environments under the NACE TM0172 and ASTM G 185 method, and both, sour and sweet environments in the NACE ID182 method, so they are fit to pass the tests as indicated by the NRF-005-PEMEX-2009 standard for application in pipelines.

Method of inhibiting corrosion using a corrosion inhibitor derived from vegetable oils

The present invention relates to the application based on alkyl acrylate homopolymers, such as antifoaming agents in crude oils with densities of 10 to 40&#xb0; API. Evaluation tests in 'live' crude oil, under similar gas-liquid separation equipment conditions, showed that these polymers based on alkyl acrylate are effective foaming inhibitors in heavy and super-heavy crude oils, reducing the foam between 15 and 50% faster compared to crude oil without an antifoaming agent. Some acrylics show better performance than commercial silicon-based polymers, which suppress foam 20-25% faster than the blank. The antifoaming agents of this invention, based on alkyl acrylate and totally free of silicon, is an advantageous option, to replace the silicone-based foam inhibitors currently on the market.

Formulations of homopolymers based on alkyl acrylates used as antifoaming agents in heavy and super-heavy crude oils

The present invention is related to formulations consisting of block copolymers &#x3b1;,&#x3c9;-di-aryl or alkyl sulfonates of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide)of bis-ammonium and block copolymers &#x3b1;,&#x3c9;-di-amine of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide), that are effective in the dewatering and desalting crude whose specific gravities are within the range of 14 to 23&#xb0;API.

Block copolymers, synthesis and application as dehydrating and desalting of heavy crudes

A chemical synthesis process is provided for the functionalization of monodispersed triblock copolymer (POE-POP-POE) with secondary or tertiary amines at a semi-industrial level in glass reactors having a capacity between 1 L and 100 L. The process includes two stages where the first stage uses an alkylsulfonyl or arylsulfonyl chloride to obtain better leaving groups, and the second stage is the nucleophilic substitution with secondary or tertiary amines, to obtain the bifunctionalized triblock copolymers. The main advantage for this process is to reduce the quantity of unitary process done in each stage, the optimization of reaction times, and the stoichiometric relationships.

Scale-up process of bifunctionalized triblock copolymers with secondary and tertiary amines, with application in dewatering and desalting of heavy crude oils

Compositions consisting of block copolymers &#x3b1;,&#x3c9;-di-aryl or alkyl sulfonates of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide)of bis-ammonium and block copolymers &#x3b1;,&#x3c9;-di-amine of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide), are provided that are effective in the dewatering and desalting crude oils whose specific gravities are within the range of 14 to 20&#xb0; API. A method of dewatering and desalting heavy crude oil adds a mixture of the copolymer bifunctionalized with an aliphatic or aromatic secondary amine and a copolymer bifunctionalized with an aliphatic or aromatic tertiary amine.

Dehydrating and desalting compositions of crude oils, using triblock copolymers &#x3b1;, &#x3a9;-bifunctionalized with amines

The present invention is related to formulations consisting by block copolymers &#x3b1;,&#x3c9;-di-aryl or alkyl sulfonates of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide)of bis-ammonium and block copolymers &#x3b1;,&#x3c9;-di-amine of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide), that are effective in the dewatering and desalting crude whose specific gravities are within the range of 14 to 23&#xb0; API.

Dehydrating and desalting compositions of crude oils, using triblock copolymers &#x3b1;,&#x3c9;-bifunctionalized with amines

The present invention is related to formulations including one or more block copolymers with low polydispersity and bifunctionalized with amines, and an ionic liquid. A method of demulsifying, dehydrating, and desalting crude oils having API gravity ranging between 8 to 30 admixes the formulation with the crude oil in an amount effective to demulsify, dehydrate and/or desalt the crude oils.

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Mexico City, Mexico

Arquimedes Estrada Martinez