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1.发明申请公开(公告)号：US20180162975A1
公开(公告)日：2018-06-14
申请号：US15726793
申请日：2017-10-06
发明人： Edgar Iván Hernández Carbajal , César Andrés Flores Sandoval , Fernando Alvarez Ramirez , Alfonso López Ortega , Rodrigo de Jesús García Jiménez , Gerardo Zavala Olivares , Juan de la Cruz Clavel López , Flavio Salvador Vázquez Moreno
IPC分类号： C08F220/18 , C10G33/04 , B01D17/04
CPC分类号： C08F220/18 , B01D17/047 , C08F2220/1808 , C08F2220/1825 , C08F2220/1841 , C08F2220/1875 , C08F2800/20 , C10G33/04 , C10G2300/201 , C08F220/34 , C08F220/14
摘要： Nowadays, one of the major problems of the oil industry is the presence of large amounts of water and salts, which cannot be efficiently removed by conventional dehydrating polymers. In addition, the acid stimulation operations of petroleum wells cause the chemical degradation of demulsifiers such as polyethers and phenolic resins, reducing drastically their efficiency as water and salt removers. Based on aforementioned, a series of new copolymers has been developed; these copolymers are combinations of an acrylic and an aminoacrylic monomer and they are synthesized by semi-continuous emulsion polymerization (under starved feed conditions), which ensures both the homogeneity of the different chains as well as the randomness of the monomers distribution. The solutions of one of these random copolymers have shown an efficiency similar or superior to combinations of two or three block copolymers (formulations), when they are applied in light or heavy crude oils. The acrylic-aminoacrylic copolymers show good performance as water/oil emulsion breaker initiators, coalescence agents of water droplets and clarifiers of the remaining aqueous phase. In addition, the chemical structure of the acrylic copolymers confers resistance to degradation induced by abrupt pH changes when acid stimulation operations of wells are performed.
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2.发明申请公开(公告)号：US20230029640A1
公开(公告)日：2023-02-02
申请号：US17679004
申请日：2022-02-23
发明人： César Andrés Flores Sandoval , Flavio Salvador Vázquez Moreno , Gerardo Zavala Olivares , Jessica Valeria Fuentes Santiago , Edgar Benedicto Zamora Guerrero , Enrique Cevada Maya
摘要： The present disclosure refers to the development of novel random bipolymers, which are comprised of alkyl acrylate and alkoxy alkyl acrylate monomers, as hydrophobic and hydrophilic components, respectively. These bipolymers are synthesized by means of semi-continuous emulsion polymerization, under strict conditions of monomer deficiency, to ensure the randomness and homogeneity of the chains. The application in dissolution of these random bipolymers has shown a dehydrating capacity superior to that of polyethers and phenolic resins, with the additional advantage of being soluble in crude oil. The random bipolymers show excellent performance as breakers of water-in-crude oil emulsions, coalescers of water droplets and clarifiers of the removed aqueous phase, and are chemically stable under acidic conditions.
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3.发明授权公开(公告)号：US11920092B2
公开(公告)日：2024-03-05
申请号：US18198588
申请日：2023-05-17
发明人： Cesar Andres Flores Sandoval , Flavio Salvador Vazquez Moreno , Fernando Alvarez Ramirez , Gerardo Zavala Olivares , Erika Gomez Buendia , Enrique Cevada Maya , Jessica Valeria Fuentes Santiago , Edgar Benedicto Zamora Guerrero , Citlally Janinne Vargas Martinez
IPC分类号： C10G33/04 , C08F2/22 , C08F2/30 , C08F216/38 , C08F220/18 , C08L33/08
CPC分类号： C10G33/04 , C08F2/22 , C08F2/30 , C08F216/38 , C08F220/1804 , C08L33/08 , C10G2300/206 , C10G2300/308
摘要： The present invention is related to the use of ethylene alkanoate-alkyl acrylate bipolymers with a high randomness monomers distribution, which are synthesized by semicontinuous emulsion polymerization process, characterized because it is carried out using slow addition rate of the pre-emulsion feeding ({dot over (q)}≤0.009 kgL·L−1·min−1), stabilized this last one by alkyl glycol ether type surfactants, at temperatures higher than 75° C. and with solids contents above 25 wt %, which avoids the formation of large sequences (blocks) of a same monomer. This structural characteristic gives the ethylene alkanoate-alkyl acrylate bipolymers a high efficiency as chemical agents for removal of complex water/crude oil emulsions of crude oil blends.
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公开(公告)号：US10975185B2
公开(公告)日：2021-04-13
申请号：US15726793
申请日：2017-10-06
发明人： Edgar Iván Hernández Carbajal , César Andrés Flores Sandoval , Fernando Álvarez Ramírez , Alfonso López Ortega , Rodrigo De Jesús García Jiménez , Gerardo Zavala Olivares , Juan de la Cruz Clavel López , Flavio Salvador Vázquez Moreno
IPC分类号： B01D17/02 , C08F220/18 , B01D17/04 , C10G33/04
摘要： Nowadays, one of the major problems of the oil industry is the presence of large amounts of water and salts, which cannot be efficiently removed by conventional dehydrating polymers. In addition, the acid stimulation operations of petroleum wells cause the chemical degradation of demulsifiers such as polyethers and phenolic resins, reducing drastically their efficiency as water and salt removers. Based on aforementioned, a series of new copolymers has been developed; these copolymers are combinations of an acrylic and an aminoacrylic monomer and they are synthesized by semi-continuous emulsion polymerization (under starved feed conditions), which ensures both the homogeneity of the different chains as well as the randomness of the monomers distribution. The solutions of one of these random copolymers have shown an efficiency similar or superior to combinations of two or three block copolymers (formulations), when they are applied in light or heavy crude oils. The acrylic-aminoacrylic copolymers show good performance as water/oil emulsion breaker initiators, coalescence agents of water droplets and clarifiers of the remaining aqueous phase. In addition, the chemical structure of the acrylic copolymers confers resistance to degradation induced by abrupt pH changes when acid stimulation operations of wells are performed.
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5.发明公开公开(公告)号：US20240294836A1
公开(公告)日：2024-09-05
申请号：US18480641
申请日：2023-10-04
发明人： César Andrés Flores Sandoval , Flavio Salvador Vázquez Moreno , Gerardo Zavala Olivares , Patricia Pérez Romo , Jorge Alberto García Martínez , Jessica Valeria Fuentes Santiago , Edgar Benedicto Zamora Guerrero , Citlally Janinne Vargas Martínez , Karen Fernanda Tonchez Pérez , Gerardo Nicolas Rodríguez Araujo , Enrique Cevada Maya
IPC分类号： C10G33/04
CPC分类号： C10G33/04 , C10G2300/308 , C10G2300/80
摘要： The present disclosure relates to novel demulsifying agents obtained from the functionalization of random bipolymers based on alkyl acrylate and aminoalkyl acrylate with different acrylic derivatives, using the aza-Michael addition reaction. The amphoteric random acrylic bipolymers were evaluated as demulsifying agents for crude oils with API densities between 10 and 40° API, showing superior performance as breakers, coalescers and clarifiers than the non-functionalized acrylic bipolymer and a commercial formulation based on polyethers.
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6.发明公开公开(公告)号：US20240002736A1
公开(公告)日：2024-01-04
申请号：US18082306
申请日：2022-12-15
发明人： César Andrés Flores Sandoval , Flavio Salvador Vázquez Moreno , Gerardo Zavala Olivares , Fernando Álvarez Ramírez , Edgar Benedicto Zamora Guerrero , Jessica Valeria Fuentes Santiago , Citlally Janinne Vargas Martínez , Gerardo Nicolas Rodríguez Araujo , Enrique Cevada Maya
IPC分类号： C10G33/04 , C08F220/14 , B01D17/04
CPC分类号： C10G33/04 , C08F220/14 , B01D17/047 , C10G2300/308 , C10G2300/302 , C10G2300/206
摘要： The present disclosure is related to novel random terpolymers of alkyl-acrylate, carboxyalkyl-acrylate, and alkoxyalkyl-acrylate, and to processes for their preparation, and processes for their use as dehydrating-desalting agents of crude oil, particularly, their use as destabilizers of water-in-crude oil (W/O) emulsions, including their use to remove water and salts dissolved in crude oils with gravities between around 10 and around 40° API.
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公开(公告)号：US20230348707A1
公开(公告)日：2023-11-02
申请号：US18075937
申请日：2022-12-06
发明人： César Andrés Flores Sandoval , Flavio Salvador Vázquez Moreno , Gerardo Zavala Olivares , Fernando Álvarez Ramírez , Jessica Valeria Fuentes Santiago , Edgar Benedicto Zamora Guerrero , Enrique Cevada Maya
CPC分类号： C08L33/14 , C10G33/04 , C08F2/22 , C08F20/26 , C10G2300/1033
摘要： The present disclosure provide bipolymers, based on alkyl acrylate and hydroxyalkyl acrylate, with high randomness and controlled molecular mass, that are useful as demulsifying and dehydrating agents for crude oil. The synthesis of these bipolymers is carried out in a single stage by emulsion polymerization, a process that, in addition to having moderate reaction conditions, allows the control of the homogeneity of the chain size, the molecular mass, and the demulsifying efficiency. These random bipolymers are soluble in organic phase; therefore, these cannot be carried away by the removed water, and are eliminated in the atmospheric distillation stage. An additional advantage is the superior demulsifying and clarifying efficiency of these random bipolymers compared with the polyether formulations widely used at industrial level. In addition, these random bipolymers provide single molecule that performs three functions: breaker, coalescer and clarifier, in contrast to formulations based on at least three different polyethers.
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8.发明公开公开(公告)号：US20230314305A1
公开(公告)日：2023-10-05
申请号：US17976194
申请日：2022-10-28
发明人： Luis Manuel Quej Ake , Norma Icoquih Zapata Peñasco , Gerardo Zavala Olivares , Vicente Garibay Febles
IPC分类号： G01N17/02
CPC分类号： G01N17/02
摘要： The present disclosure provides a scaled-up electrochemical flow cell for performing corrosion and biocorrosion studies of different types of metallic materials, including pipeline steels and new materials. The volume of the cell depends on the dimensions of the cell design, construction, assembly and testing or on the needs and requirements of the user or customer. The cell contains three working electrodes of different geometries (cylinder, disk, and rectangular); a reference electrode coupled to a Luggin capillary and an auxiliary electrode, which are used to determine corrosion rates by the electrochemical and gravimetric method and consists of the adaptation of the following components: (1) lid with hermetic seal with four inlets for electrode placement (auxiliary, working and reference); (2) threaded joint to place the auxiliary electrode; (3) ground joint to place the working electrode (disk or cylindrical) for electrochemical tests; (4) ground joint to place the reference electrode coupled to a Luggin capillary with platinum tip; (5) threaded joint to place the rectangular corrosion coupon for electrochemical tests; (6) threaded coupling to hold the pipe type working electrode and to place a piping system for solution inlet; (7) machined working electrode in pipe form for electrochemical and gravimetric tests; (8) threaded joint to place the pipe type working electrode and solution inlet; (9) threaded opening for solution outlet; (10) threaded opening for coolant inlet; (10) threaded opening for coolant inlet; (11) threaded opening for coolant outlet; (12) magnetic stirrer location. The cell can operate under different fluid flow conditions, simulating different hydrodynamic pipe patterns.
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公开(公告)号：US20220106530A1
公开(公告)日：2022-04-07
申请号：US17494436
申请日：2021-10-05
发明人： César Andrés Flores Sandoval , Flavio Salvador Vázquez Moreno , Fernando Alvarez Ramírez , Gerardo Zavala Olivares , Citlally Janinne Vargas Martínez , Jessica Valeria Fuentes Santiago , Edgar Benedicto Zamora Guerrero , Enrique Cevada Maya , Erika Gómez Buendía
IPC分类号： C10G33/04 , C08F220/34 , C08F220/18 , C08F220/28
摘要： The present disclosure belongs to the field of chemical products for petroleum conditioning, in particular demulsifying agents. This disclosure concerns the application of terpolymers based on combinations of alkyl acrylates, aminoalkyl acrylates, and alkoxyalkyl acrylates, to destabilize water-in-oil (W/O) emulsions, in order to remove the emulsified water and salts dissolved in it, specifically, in the triphasic separation units for crude oils with API densities from 8 to 40° API.
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