公开(公告)号：US20220307322A1

公开(公告)日：2022-09-29

申请号：US17698724

申请日：2022-03-18

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： Joseir Gandra PERCY ,  Roni Abensur GANDELMAN ,  Guilherme Ribeiro MAGALHAES ,  Emilio Cesar Cavalcante Melo Da SILVA ,  Guilherme Siqueira VANNI ,  Augusto Borella HOUGAZ ,  Joao Carlos Ribeiro PLACIDO ,  Hugo Francisco Lisboa SANTOS

IPC: E21B7/128 ,  E21B21/08 ,  E21B21/10

Abstract: The present invention refers to a method of drilling a marine wellbore with fluid reverse circulation without using drilling riser tubulars. In reverse circulation drilling, the fluid return with gravels occurs inside the drill string (17) and the injection of clean fluid is done through the annular of the well, so that, having a rotating head over the BOP (19), or inside it, the use of riser tubulars as a flow line for the fluid return with gravels is disposed, using instead the drill string (17).
For the kill and choke lines, as well as for fluid injection, rigid or flexible lines can be used, eliminating the need to use drilling risers, thus releasing large load capacity and space on the probe. The method of this invention also eliminates the need for large volumes of fluid to fill entire riser tubulars. The entire operation can be done without the need for subsea pumps or concentric columns. Additionally, the invention makes the operation of lowering the drilling riser tubulars unnecessary, which lasts for days and has a high cost. Finally, for dual activity probes, the arrangement allows the use of the two towers even after connecting the BOP (19), something that is not possible with the use of drilling riser tubulars. Therefore, operations such as mounting and lowering the casing in the water depth can be carried out in parallel with the drilling of the phase, allowing a significant additional gain of time.

公开(公告)号：US20220212159A1

公开(公告)日：2022-07-07

申请号：US17541672

申请日：2021-12-03

Applicant: PETROLEO BRASILEIRO S.A.- PETROBRAS ,  INSTITUTO NACIONAL DE TECNOLOGIA - INT

Inventor： Cristina PONTES BITTENCOURT QUITETE ,  Elise MOTA DE ALBUQUERQUE ,  Simone DE JESUS CANHACI ,  Leon Fagner FEITOSA ,  Marco Andre FRAGA

IPC: B01J20/10 ,  B01J20/02 ,  B01J20/04 ,  B01J20/30 ,  B01D53/02

Abstract: The present invention relates to a process of synthesis of silica-based adsorbents used in the CO2 capture process in oil fields with expressive volumes of associated CO2, aiming its subsequent use in processes of producing bioQAV and alcohol from the hydrogenation reaction. Adsorbents obtained based on silica and different metals have a high stability and activity in CO2 capture, at adsorption and desorption temperatures of 25° C., increasing the density of the silanol groups present in mesoporous silica, conducted by replacing Si in the crystal lattice with various metals. The insertion of elements in the structure is responsible for creating vacancies used to capture CO2, being characteristic of higher enthalpies involved in the process. Additionally, the exchange of silicon for metals is conducted during the hydrolysis process of the silica precursor, not requiring another step, in addition to being able to be conducted with low-cost precursors, such as chlorides, nitrates and isopropoxides, and an aqueous medium.

公开(公告)号：US11359068B2

公开(公告)日：2022-06-14

申请号：US16468582

申请日：2017-09-14

Applicant: PETROLEO BRASILEIRO S.A.—PETROBRAS

Inventor： Aline Machado De Castro ,  Adriano Carniel De Oliveira ,  Erika de Araújo Valoni ,  Danielle Altomari Teixeira ,  Cesar Rezende Da Motta

IPC: C08J11/24 ,  C08J11/10 ,  C12N9/18

Abstract: The present invention relates to an enzymatic process for depolymerization of post-consumer poly(ethylene terephthalate) by a glycolysis reaction. This invention also relates to a process for recycling post-consumer poly(ethylene terephthalate) and to the recycled poly(ethylene terephthalate) obtained by said process.

公开(公告)号：US20220168922A1

公开(公告)日：2022-06-02

申请号：US17667929

申请日：2022-02-09

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS ,  STATOIL BRASIL OLEO E GAS LTDA. ,  UNIVERSIDADE FEDERAL DE MINAS GERAIS - UFMG

Inventor： Wilson Mantovani GRAVA ,  Wander Luiz VASCONCELOS ,  Peter Wilhelmus Jacques DERKS ,  Jailton Ferreira do NASCIMENTO ,  Eduardo Henrique Martins NUNES ,  Douglas Fernandes de SOUZA ,  Daniela Cordeiro Leite VASCONCELOS

IPC: B28B17/00 ,  B28B1/00

Abstract: Provided is a mold cooling system for the manufacturing of ceramic parts by freeze-casting including: a source (1) of cooling gas; a cooling gas cooling medium (7) fluidically connected to the cooling gas source (1); and a cooling cell (5), fluidly connected to the cooling gas cooling medium (7), including a mold (9) in its interior, wherein the cooling cell (5) includes a refrigerated cooling gas injection opening. Thus, a mold cooling system is provided for the manufacturing of ceramic parts by freeze-casting including the stages of: refrigerating a cooling gas coming from a cooling gas source (1); and injecting a cooling gas that is refrigerated in a cooling cell (5) including a mold (9) in its interior.

公开(公告)号：US20220097091A1

公开(公告)日：2022-03-31

申请号：US17418497

申请日：2019-12-26

Applicant: PETROLEO BRASILEIRO S.A. -PETROBRAS ,  SERVICO NACIONAL DE APRENDIZAGEM INDUSTRIAL - DEPARTAMENTO REGIONAL DE SANTA CATARINA

Inventor： Andre KOEBSCH ,  Andre MARCON ZANATTA ,  Ariel Paulo REZENDE ,  Ismael Jose SECCO ,  Walter KAPP

IPC: B05B13/04 ,  B05B15/62 ,  B63B59/00

Abstract: The present invention refers to a working assembly for a painting system, containing a mobile platform and a crank and slider-type oscillating mechanism, which reproduces movements transmitted to a shaft and that guides a paint gun, mimicking the process performed by painters. Thus, the mobile platform and the oscillating mechanism were designed to move unidirectionally over the surface, being able to move in two orthogonal directions and also to rotate in order to keep the platform level.

公开(公告)号：US09983187B2

公开(公告)日：2018-05-29

申请号：US14861364

申请日：2015-09-22

Applicant: PETROLEO BRASILEIRO S.A.—PETROBRAS

Inventor： Flávio Cortiñas Albuquerque ,  Rafael dos Santos Nascimento de Brito ,  Marcele Abreu Lopes

IPC: G01N33/00 ,  G01N33/28 ,  C10G25/00

CPC classification number: G01N33/2835 ,  C10G25/00 ,  C10G2300/1037 ,  C10G2300/203 ,  C10G2300/80

Abstract: The present invention is a system for the extraction and quantification of tetraprotic naphthenic acids present in oils, precursors of the formation of calcium naphthenates, which are potential formers of deposits, causing of damage to pieces of equipment used in the oil production industry.

公开(公告)号：US20180086992A1

公开(公告)日：2018-03-29

申请号：US15717009

申请日：2017-09-27

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： Wladmir FERRAZ DE SOUZA ,  Marcus Vinicius Eiffle DUARTE ,  Lilian ERNST ,  Carmen Lucia TAVARES DA SILVA

IPC: C10G70/04 ,  C10G31/06 ,  C10G25/00 ,  C01G49/02 ,  B01D53/48 ,  B01J20/02 ,  B01J20/30 ,  C07C7/148

CPC classification number: C10G70/046 ,  B01D53/48 ,  B01D53/64 ,  B01D2253/1124 ,  B01D2256/24 ,  B01D2257/306 ,  B01D2257/60 ,  B01J20/0229 ,  B01J20/3028 ,  B01J20/3078 ,  B01J2220/42 ,  C01G49/02 ,  C07C7/1485 ,  C10G25/003 ,  C10G31/06 ,  C10G2300/202

Abstract: The present invention describes a process for the simultaneous removal of arsenic and sulphur compounds from hydrocarbon streams of fossil origin, wherein hydrocarbon streams of fossil origin resulting from the retorting process of schist are purified by direct contact with hydrated iron oxide, such as goethite (α-FeOOH) in its raw natural form (limonite ore particles).

公开(公告)号：US20170240824A1

公开(公告)日：2017-08-24

申请号：US15441668

申请日：2017-02-24

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： Andrea de Rezende PINHO ,  Fabio Leal MENDES

IPC: C10G69/04 ,  C10G51/02

CPC classification number: C10G69/04 ,  C10G51/026 ,  C10G2300/1014 ,  C10G2300/202 ,  C10G2400/02 ,  Y02P30/20

Abstract: The present invention relates to a process for obtaining fuel from biomass which comprises the introduction of the catalyst (3) in the base of an cracking section (4), wherein said catalyst (3) at high temperature comes in contact with a gas stream of light hydrocarbons rich in hydrogen (1), wherein the catalyst (3) and hydrocarbon (1) then come in contact with a lignocellulosic liquid stream (2) in the same cracking section (4), creating the reaction mixture (5) that, soon after, comes into contact with the main stream containing the traditional fossil load of a FCC (6) in a second cracking section (7).

公开(公告)号：US20170144731A1

公开(公告)日：2017-05-25

申请号：US15354627

申请日：2016-11-17

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS ,  UNIVERSIDADE FEDERAL DO RIO DE JANEIRO

Inventor： Daniel Fonseca DE CARVALHO E SILVA ,  Marcos Donato Auler DA SILVA FERREIRA ,  Antonio Carlos FERNANDES

IPC: B63B21/26

CPC classification number: B63B21/26 ,  B63B21/38 ,  B63B2021/265 ,  E02D5/80 ,  E02D5/803

Abstract: The present invention is related to a gravitation anchor for offshore anchoring of ships and platforms, comprising a main body (10) with a longitudinal axis of revolution (11), comprising a means of stabilization (14), whereby the means of stabilization (14) comprises a means of automatic activation (140). Optionally, the means of stabilization comprises at least one stabilizer (14), whereby each stabilizer (14) comprises an end pivotally attached (141) to the gravitation anchor (1), and a free end, whereby when the stabilizer (14) is in a retracted position, the free end is positioned closer to the main body (10) of the gravitation anchor (1), and whereby when the stabilizer (14) is in an extended position, the free end is positioned away from the main body (10) of the gravitation anchor (1).

公开(公告)号：US20170138478A1

公开(公告)日：2017-05-18

申请号：US15351666

申请日：2016-11-15

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： Paulo Koji USUDA

IPC: F16J15/08 ,  F16L25/00

CPC classification number: F16J15/0806 ,  F16J15/0818 ,  F16J15/125 ,  F16J2015/0856 ,  F16L23/18 ,  F16L25/0018

Abstract: The present invention is for sealing gaskets applicable to pipes, valves and boiler equipment. In this context, the present invention provides a sealing gasket for piping systems comprising (i) a core (10) formed by a plurality of concentric metal rings (10a), each ring (10a) comprising a substantially rectangular cross-section, wherein the height of the rectangular cross-section is the same for all the rings (10a), and (ii) surface coating (12) of flexible material applied to the upper and lower surfaces of the core (10). The present invention also provides the manufacturing process of said sealing gasket. Thus, the present invention provides a sealing gasket (i) that eliminates the need for an external rigid ring, (ii) that is easy to conform for reduced-diameter sealing gaskets and (iii) can be easily formed into different shapes, such as an oval shape, which is particularly useful for sealing between the body and the gate valve bonnet.