公开(公告)号：US12055262B2

公开(公告)日：2024-08-06

申请号：US17628592

申请日：2020-07-23

Applicant: PETROLEO BRASILEIRO S.A.-PETROBRAS ,  IPT-Instituto de Pesquisas Tecnologicas do Estado de Sao Paulo S/A

Inventor： Murilo Costa Monteiro ,  Bertrando Ribeiro Rabelo ,  Daniel De Almeida Pereira ,  Mario Henrique Fernandes Batalha ,  Leandro Aparecido Da Silva Albino ,  Alessandro Guimaraes

IPC: F16L57/06 ,  F16L57/00

CPC classification number: F16L57/06 ,  F16L57/005

Abstract: This invention encompasses a system and a method used in the petrochemical and mechanical engineering area, more specifically in the area of protecting pipes or similarly shaped objects against external or internal damage or wear, which comprises a protective system for the ends and the inside of coated pipes, using the coating itself and other additional devices. The system is comprised of a cup (1), spacer (2), coating (3), external ring (4), and cap (5) used in the production line of the pipe-coating process, using the external coating itself, preventing corrosion and mechanical damage at the ends/bevel, in the sandblasted area of the collar and internal surface, from storage and transport to the location where it will be used, and welding in the field or on the vessel.

公开(公告)号：US20240216897A1

公开(公告)日：2024-07-04

申请号：US18399511

申请日：2023-12-28

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： Renato Necco Castro ,  Taina Valente ,  Jose Marcos Moreira Ferreira ,  Marco Antonio Santos De Abreu ,  Marlon Brando Bezerra De Almeida

IPC: B01J29/08 ,  B01J35/32 ,  B01J35/51 ,  B01J35/61 ,  B01J35/63 ,  B01J35/70 ,  B01J37/02 ,  B01J37/03 ,  B01J37/12 ,  B01J37/30 ,  C10G11/05 ,  C10G11/18

CPC classification number: B01J29/088 ,  B01J35/32 ,  B01J35/51 ,  B01J35/615 ,  B01J35/638 ,  B01J35/70 ,  B01J37/0236 ,  B01J37/033 ,  B01J37/038 ,  B01J37/12 ,  B01J37/30 ,  C10G11/05 ,  C10G11/18 ,  B01J2229/20 ,  B01J2229/37 ,  B01J2235/00 ,  C10G2300/202

Abstract: The present invention relates to a process for preparing fluid catalytic cracking (FCC) catalysts having porosity and accessibility controlled by the activity of water-soluble porogens. The catalyst produced can be used as an additive for fluid cracking, as additives for SOx and NOx reduction, as a combustion promoter and reduction of sulfur in cracked naphtha. It can also be used in hydrocracking, as a support for hydrotreating catalysts, catalytic pyrolysis of post-consumer polymers (rubber tires, plastic films, and so on) and pyrolysis of biomass.

公开(公告)号：US12025249B2

公开(公告)日：2024-07-02

申请号：US17044896

申请日：2019-04-02

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： Raphael Coelho Schiavo ,  Paulo Sergio Freire ,  Nelson Patricio Junior ,  Emanuel Freire Sandes ,  Diana Albani Siqueira

IPC: F16L27/12 ,  C10G11/18 ,  F16L51/00

CPC classification number: F16L27/12 ,  C10G11/18 ,  F16L51/00

Abstract: A telescopic joint for connecting two pipes in a separating vessel of a fluid catalytic cracking unit includes a first pipe and a second pipe; wherein the two pipes are connected together at their ends by a sliding ring comprising a first portion extending substantially parallel to the first and second pipes, and a second portion extending substantially perpendicular to the first and second pipes, to thereby form an L profile; the first pipe comprises a fitting seat fixed at its end, and a flanged ring, the flanged ring and the fitting seat being configured to surround at least partially the second portion of the sliding ring; and the telescopic joint comprises a first plurality of gaskets positioned in a first space between the second portion of the sliding ring and the fitting seat and distributed in a direction parallel to the second portion of the sliding ring.

公开(公告)号：US12017915B2

公开(公告)日：2024-06-25

申请号：US17399448

申请日：2021-08-11

Applicant: PETROLEO BRASILEIRO S.A.—PETROBRAS

Inventor： Roberto Carlos Pontes Bittencourt

IPC: C01B3/40 ,  B01J21/04 ,  B01J23/00 ,  B01J23/755 ,  B01J23/83 ,  B01J35/61 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  B01J37/18

CPC classification number: C01B3/40 ,  B01J21/04 ,  B01J23/002 ,  B01J23/755 ,  B01J23/83 ,  B01J35/612 ,  B01J35/613 ,  B01J37/0213 ,  B01J37/04 ,  B01J37/082 ,  B01J37/18 ,  C01B2203/0233 ,  C01B2203/1058 ,  C01B2203/1076 ,  C01B2203/1241

Abstract: The present invention refers to processes for obtaining steam reforming catalysts containing nickel, cerium, lanthanum and copper oxides, free from potassium or alkali metals, preferably with the oxide layer being located externally with a thickness of less than 0.5 mm on the support particle, preferably the support being based on alumina, magnesium aluminate, hexaaluminates or mixtures thereof. The catalysts according to present invention show high activity, resistance to thermal deactivation and resistance to coke accumulation in the steam reforming reaction of hydrocarbons.

公开(公告)号：US11846380B2

公开(公告)日：2023-12-19

申请号：US17258515

申请日：2019-07-04

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： Henri Fiorenza De Lima ,  Gustavo Geraldo Pappen

IPC: F16L55/18 ,  F16L55/165 ,  F16L55/10

CPC classification number: F16L55/165 ,  F16L55/10

Abstract: The present invention relates to devices for repairing hoses of umbilicals. In this context, the present invention provides a device for repairing a hose (3) of an umbilical, comprising a tubular repair body (1) and a fusible element (2) adapted to obstruct the passage of fluid through the inside of the repair body (1), wherein the repair body (1) comprises an outside diameter that matches the internal diameter of the hose (3) to be repaired. In addition, the invention further provides a method for repairing a hose (3) of an umbilical comprising the steps of: blocking a first end (31) of a hose (3) of an umbilical; inserting a device for repairing a hose (3) of an umbilical into a second end (32) of the hose (3); injecting a polymer sealant into the second end (32) of the hose (3); using upstream pressure to move the repair device as far as the region of the leak, until the repair body (1) completely covers the opening/leak site (4); flushing the polymer sealant between the internal wall of the hose (3) and the external wall of the device as far as the opening/leak site (4) in the house (3); solidifying the polymer sealant, thereby attaching the tubular repair body (1) inside the hose (3); releasing the first end (31) of the hose (3) of the umbilical; and flushing the fusible element (2) through the inside of the hose (3).

公开(公告)号：US11796487B2

公开(公告)日：2023-10-24

申请号：US17049775

申请日：2020-03-12

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

Inventor： Carla Alves Marinho Ferreira ,  Carlos Eduardo Maia De Souza ,  Edgar Francisco Oliveira De Jesus ,  Joao Marcio De Castilho Santos ,  Nei Mariano Da Fonseca Junior ,  Ricardo Tadeu Lopes

IPC: G01N23/18

CPC classification number: G01N23/18 ,  G01N2223/04 ,  G01N2223/1013 ,  G01N2223/205 ,  G01N2223/301 ,  G01N2223/308 ,  G01N2223/505 ,  G01N2223/628

Abstract: The present invention is related to technologies used to inspect flexible undersea pipes, in particular to detect flooding of the annular space in said pipes. The present invention discloses a device for detecting annular flooding with gamma transmission in a flexible pipe, comprising a structure (07), in which said structure (07) contains in its interior, a first pressure vessel (10) containing an encapsulated radioactive source (03) in its interior, a second pressure vessel (11) containing radiation sensors (04) in its interior, and a third pressure vessel (12), containing electronic means for collecting and amplifying signals (05) in its interior, in which said radiation sensors (04) are connected to the electronic means (05) for collecting and amplifying signals using an internal cable (13). The present invention also discloses a unit for detecting annular flooding with gamma transmission in a flexible pipe based on the gamma transmission technique, comprising a device (50) for detecting annular flooding with gamma transmission in a flexible pipe (01) coupled to an ROV (02), in which coupling occurs through a control arm (08) of the ROV (02), and the device is controlled and operated exclusively via the umbilical cable (06) connected to the ROV (02), and a method for detecting annular flooding with gamma transmission in a flexible pipe.

公开(公告)号：US11767727B2

公开(公告)日：2023-09-26

申请号：US17274688

申请日：2019-09-09

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： Roberto Rodrigues

IPC: E21B33/038 ,  E21B43/013 ,  E21B43/017 ,  F16L37/00

CPC classification number: E21B33/038 ,  E21B43/013 ,  E21B43/017 ,  F16L37/00

Abstract: The invention relates to systems for producing oil and hydrocarbons in general, in deep water, using subsea wells and apparatus which are interconnected in a drainage and production system. In this context, the invention relates to a mandrel multiplying device (1a, 1b, 1c, 1d, 1e, 1f) suitable for providing additional points between pieces of subsea apparatus, the device comprising a connector (2) for coupling to a mandrel of a subsea apparatus (8, 9), and at least two mandrels (3, 4, 5) suitable for providing points for connection to subsea lines (J1, J1′, J1″, J2, R1, R2, A1, A2, A3) which are connected to other pieces of subsea apparatus (8, 9) or to a production unit (13).

公开(公告)号：US11761680B2

公开(公告)日：2023-09-19

申请号：US17469267

申请日：2021-09-08

Applicant: PETROLEO BRASILEIRO S.A.—PETROBRAS

Inventor： Mario Germino Ferreira Da Silva ,  Francisca Ferreira Do Rosario ,  Bruno Barbosa Castro

IPC: F24H9/20

CPC classification number: F24H9/2014 ,  F24H2250/00

Abstract: The object of the invention is to solve the problem of casing and string collapse of production or injection wells, which occurs due to cooling caused by injection of completion fluids into the well, by applying heat to the fluid being injected during operations, such as acid treatments, secondary recovery, scale removal, and inhibiting squeeze.
The fluid laser heating equipment was designed to perform the heating of the fluid to be injected into a production or injection well. Before being pumped into the well, the fluid passes through the heating equipment, through a metal coil-shaped tube immersed in hot water, placed inside a tank, a laser system heats the water inside the tank, the water inside the tank exchanges heat with the coil heating the same, and in turn the coil exchanges heat with the fluid passing within it. In this way, the fluid will be at an appropriate temperature for injection into the well.

公开(公告)号：US11492567B2

公开(公告)日：2022-11-08

申请号：US15734644

申请日：2019-06-05

Applicant: PETROLEO BRASILEIRO S.A.—PETROBRAS ,  UNIVERSIDADE FEDERAL DO CEARA—UFC

Inventor： Stephanie De Oliveira Souza ,  Rosana Maria Alves Saboya ,  Jose Andre Cavalcanti Da Silva ,  Italo Castro Rios ,  Francisco Murilo Tavares De Luna ,  Fatima Andrea Lima Girao ,  Celio Loureiro Cavalcante, Jr.

IPC: C10M105/42 ,  C07C67/08 ,  C07C69/708 ,  C10M105/40 ,  C10M177/00 ,  C10N20/02 ,  C10N30/10 ,  C10N70/00

Abstract: The present invention describes a process for obtaining a biolubricant from vegetable oil, which comprises the steps of (a) esterification reaction of the product of vegetable oil hydrolysis using a branched aliphatic alcohol; (b) epoxidation reaction of the esters obtained in step (a); and (c) nucleophilic substitution reaction of the epoxidated esters obtained in step (b) using a branched aliphatic alcohol. The present invention also describes a biolubricant obtained from the process. More specifically, a biolubricant is described that is produced from a ricinoleic fatty acid, whose formula is illustrated in FIG. 1 of the present invention, and where R1 is a hydroxyl or it is from the formula R3COO−, with R3 being an alkyl radical C1-C3, preferably a methyl radical; and R2 consists of a straight chain of hydrocarbons C4-C8 and a branched chain of hydrocarbons C1-C3.

公开(公告)号：US20220349281A1

公开(公告)日：2022-11-03

申请号：US17761001

申请日：2020-09-15

Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS

Inventor： Dinart DUARTE BRAGA

IPC: E21B43/12 ,  E21B34/16

Abstract: The invention solves the problem of the difficulty of acquiring subsea variables by using a widely available surface variable, namely the pressure upstream of the choke valve. As surface variables have an unfavorable dynamic for use in conventional anti-slug controllers, which are based on the linear PID algorithm, the proposed controller uses a hybrid fuzzy-PID architecture, which compensates for the unfavorable dynamic of the controlled variable by means of heuristic interventions in the control action generated by the PID part of the controller. The heuristic action of the proposed controller allows it to be more robust than a conventional controller, even with a relatively slow control action, which makes it possible to apply the proposed algorithm in systems whose choke valve activation is slow. Thus, the two largest impediments for installation of conventional controllers, lack of subsea measurement and choke valve slowness, do not pose a problem for application of the proposed algorithm. This allows the proposed anti-slug controller to be used in offshore production systems without the need for physical intervention in the subsea or surface facilities.