-
公开(公告)号：US11560579B2
公开(公告)日：2023-01-24
申请号：US17251623
申请日：2019-06-07
发明人： Aline Machado De Castro , Sonia Maria Cabral De Menezes , Luiz Silvino Chinelatto Junior , Alessandra Rangel Cassella , Bernardo Dias Ribeiro
摘要： The present invention describes a process for pretreatment of lignocellulosic biomass that comprises the step of contacting a lignocellulosic biomass with an ionic liquid consisting of a phthalic salt of dicholine in the weight ratio from 1:1 to 1:100 of biomass:ionic liquid, said step taking place for a period of time that varies from 0.4 to 48 hours and in a temperature range that varies from 60 to 200° C. Furthermore, the present invention also relates to the use of the pretreated lignocellulosic biomass in an enzymatic hydrolysis process.
-
公开(公告)号：US20230018884A1
公开(公告)日：2023-01-19
申请号：US17757445
申请日：2020-12-15
摘要： The invention uses the principle of the pneumatic turbine and a cooling system for the entire welding torch, wherein the gas used in the welding process, or even compressed air, enters through a conductor in the axial direction to the consumable, thus moving, a turbine, which in turn moves a tip and a tip holder. The welding torch can be used for extended periods of time at 100% cycle on welding machines of NEMA class I, since it is water cooled. In addition, the torch can be used in any welding source from any manufacturer, whether the machine is new or very old, as the euro standard (socket) is the same. This implies that there is no need to purchase a new welding machine, but only a torch. In construction and assembly environments, such as riser welding, refineries, joint welding, coating, and processes that aim to build a part using only one welding consumable, the use of said torch would bring a significant balance in terms of reduction of time and cost. This torch can also be used in any existing welding device, within the abovementioned processes.
-
公开(公告)号：US20230009732A1
公开(公告)日：2023-01-12
申请号：US17858312
申请日：2022-07-06
发明人： Fabio De Assis Ressel Pereira , Rafael De Paula Cosmo , Andre Leibsohn Martins , Helga Elisabeth Pinheiro Schluter , Bruno Barbosa Castro
摘要： The present invention addresses to a system that aims at reproducing situations close to those found in oil wells, in relation to the thermodynamic conditions (pressure and temperature), and the fluids present (by means of the chemical species involved), aiming at representing in a more realistic way the production scenarios to be faced. The main scope is to represent on a laboratory scale the phenomenon of depressurization with the release of carbon dioxide inducing the precipitation of calcite (calcium carbonate), the growth and agglomeration of inorganic crystals, and the phenomena of adhesion and scale on common metallic surfaces of elements of completion of oil wells.
-
公开(公告)号：US20230002667A1
公开(公告)日：2023-01-05
申请号：US17781215
申请日：2020-11-19
发明人： Giuseppe Sampaio de Almeida Cardoso , Francisca Ferreira do Rosario , Humberto Eustaquio Lopes , Alexandre Barbosa Melo de Carvalho , Felipe Batista Alvim , João Francisco Cajaíba da Silva , Tiago Cavalcante Freitas
摘要： The present invention proposes a combined treatment of scale removal and inhibition in reservoir rock (inhibition squeeze), by using inhibitors derived from organophosphonic acid, in acidic medium, aiming at minimizing the intervention time in well scale mitigation operations, in addition to reducing costs per treatment and the risks associated with the process.
-
公开(公告)号：US20220389797A1
公开(公告)日：2022-12-08
申请号：US17835629
申请日：2022-06-08
发明人： Mario Germino Ferreira da Silva , Francisca Ferreira do Rosario , Alexandre Zacarias Ignacio Pereira , Rosane Alves Fontes , Maylton Freitas da Silva , Rita de Cassia Comis Wagner
摘要： The present invention addresses to a remote divergence method for inhibiting or removing scaling in wells equipped with intelligent completion (IC), including sealing failures, in which a mixture of viscous gel and solid material in different granulometries is used (7) and spheres soluble in water (8) and in oil (6), aiming at maintaining the production of wells equipped with intelligent completion, as well as reducing costs in relation to operations commonly performed with rigs.
-
公开(公告)号：US11505753B2
公开(公告)日：2022-11-22
申请号：US17260931
申请日：2019-07-16
发明人： Vitor Loureiro Ximenes , Paulo Cesar Peixoto Bugueta , Marlon Brando Bezzera De Almeida , Marco Antonio Gomes Teixeira , Fabio Leal Mendes , Andrea De Rezende Pinho , Alexander Rangel Bastos , Adriano Do Couto Fraga
摘要： The present invention describes the coprocessing of a lignocellulosic liquid stream and an intermediate fossil stream in the oil refining process comprising the steps of (a) contacting said intermediate fossil stream and said lignocellulosic liquid stream with a stream of solvent of C3-C10 hydrocarbons in an extraction section, obtaining a stream of extract with solvent and a stream of raffinate with solvent; and (b) sending said stream of extract with solvent to a separation section, obtaining a deasphalted oil stream comprising solvent-free carbon of renewable origin and a stream of recovered solvent. The present invention further relates to a process for producing fuels from the deasphalted oil stream comprising carbon of renewable origin, wherein the process comprises sending the deasphalted oil stream to a conversion section of an oil refinery. The conversion section is selected from catalytic hydrocracking unit, thermal cracking, fluidized-bed catalytic cracking, visbreaking, delayed coking and catalytic reforming.
-
公开(公告)号：US20220268138A1
公开(公告)日：2022-08-25
申请号：US17269774
申请日：2019-08-08
发明人： Carlos Alberto ALVES SAO MATEUS , Daniel CENTURION BARRIONUEVO , Alcino RESENDE DE ALMEIDA , Ricardo DOS SANTOS FRAGA
IPC分类号： E21B43/12
摘要： This invention is related to a pneumatic lifting system for hydrocarbon production, comprising at least one mandrel (1) and at least one gas flow control valve (11), wherein the at least one mandrel (1) is connected to a production string (3), wherein the production string is positioned inside a well casing (2), wherein it comprises a straddle (10) supported on the production string and enveloping the mandrel, wherein in the region of the gas outlet (110) of the gas flow control valve (11) a chamber (105) is formed, wherein the straddle (10) comprises a means of fluidic communication (102) adapted to feed gas inside the straddle (10).
-
公开(公告)号：US11408238B2
公开(公告)日：2022-08-09
申请号：US16639304
申请日：2018-08-14
发明人： Jose Soares de Miranda Junior , Orman Salvador Toscano , Paulo Cesar Cardoso Ferreira , Humberto de Oliveira Reis
IPC分类号： E21B23/14 , E21B33/072 , E21B33/076
摘要： The present invention relates to an auxiliary device for lowering at least one tool into a well, the auxiliary device comprising a main body configured to at least partially envelope an upper portion of the tool, wherein the main body comprises: a bottom opening configured to allow passage of the tool; and a top opening configured to block passage of the tool and allow passage of the cable supporting the tool.
-
49.发明申请公开(公告)号：US20220128512A1
公开(公告)日：2022-04-28
申请号：US17278111
申请日：2019-09-20
发明人： Paulo Roberto SANTOS POLI , Nei Mariano DA FONSECA JUNIOR , Marco Antonio DA SILVA , João Marcio DE CASTILHO SANTOS , Gustavo PINTO PIRES , Carlos Eduardo MAIA DE SOUZA
摘要： This invention provides a system for detecting flooding in a flexible pipe from a connector of the flexible pipe, comprising: an ROV (3) comprising an arm element (18) designed to move an ultrasound sensor (13), until the ultrasound sensor (13) comes into contact with the connector (14) of the flexible pipe (17); and means for taking ultrasound measurements with respect to the state of the annulus of the flexible pipe (17) from a chamber of the connector of the flexible pipe (17) in contact with the annulus of the flexible pipe (17). The invention further provides a method for detecting flooding in a flexible pipe from a connector of the flexible pipe, comprising the steps of: moving an ROV (3) to a region close to the connector (14) of the flexible pipe (17); activating an arm element (18) of the ROV (3) to move an ultrasound sensor (13), until the ultrasound sensor (13) comes into contact with the connector (14) of the flexible pipe (18); and taking ultrasound measurements with respect to the state of the annulus of the flexible pipe (17) from a chamber of the connector (14) of the flexible pipe (17) in contact with the annulus of the flexible pipe (17).
-
公开(公告)号：US20210154620A1
公开(公告)日：2021-05-27
申请号：US17105284
申请日：2020-11-25
发明人： JAILTON FERREIRA DO NASCIMENTO , CRISTINA CARDOSO PEREIRA , WILSON MANTOVANI GRAVA , CRISTIANO PIACSEK BORGES
摘要： The present invention deals with a method for obtaining membranes in the form of hollow fibers with application in the field of carbon dioxide removal from natural gas. The aforementioned membranes are obtained by means of heat treatment of polymeric membranes. In this method, polymeric membranes are obtained by a phase-inversion technique by immersion-precipitation and are subsequently subjected to a heat treatment, that is, that the membranes effectively become precursor membranes of the heat treatment. The heat treatment process involves the optimization of the heating rate, temperature, and stabilization time variables, aiming at the improvement of the transport properties of the polymeric membranes. After the heat treatment, it becomes possible to use the membranes in separation processes of gases which operate at pressures greater than 30 bar, with selectivity for carbon dioxide (CO2).
-
-
-
-
-
-
-
-
-
搜索结果
327 条记录 (耗时 0.022 秒)
