WO2020113296A1 - Sistema e método para detecção de estanqueidade do espaço anular em dutos flexíveis - Google Patents
Sistema e método para detecção de estanqueidade do espaço anular em dutos flexíveis Download PDFInfo
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- WO2020113296A1 WO2020113296A1 PCT/BR2019/050513 BR2019050513W WO2020113296A1 WO 2020113296 A1 WO2020113296 A1 WO 2020113296A1 BR 2019050513 W BR2019050513 W BR 2019050513W WO 2020113296 A1 WO2020113296 A1 WO 2020113296A1
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- Prior art keywords
- pressure
- valve
- annular
- chamber
- connector
- Prior art date
Links
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- 238000007789 sealing Methods 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 230000002706 hydrostatic effect Effects 0.000 claims description 17
- 238000005070 sampling Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 4
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/22—Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/117—Detecting leaks, e.g. from tubing, by pressure testing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/18—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements using liquid as the pressure-sensitive medium, e.g. liquid-column gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
Definitions
- the present invention is related to subsea equipment and production technologies. More particularly, the present invention relates to leak detection systems against water invasion and flooding in the annular space of flexible pipelines used in the oil and gas industry.
- the invention deals with a device (equipment) and method capable of measuring the pressure value inside the annular of a flexible duct in operation, allowing to directly infer if this annular is watertight or not watertight.
- This invention makes it possible to directly check the tightness of the annular duct by measuring the pressure of the annular through the relief valve present in the connectors of the ducts in operation. Reading the pressure in the connectors present at both ends of each section allows to differentiate between dry and flooded condition.
- the invention uses a non-destructive test technique, considering that this technique had to overcome technological difficulties due to the physical constitution of multilayer flexible ducts, mainly because it involves different materials.
- the invention allows the collection of a sample of fluids or gases present inside the annular for later analysis, which allows to differentiate between condensate and sea water, in addition to evaluating the composition and corrosivity of the annular, in the presence of fluid.
- the applicability of the invention does not depend on the number of layers, covering oil production ducts, gas injection ducts and gas lift ducts.
- the operating water layer does not influence the efficiency of this technology, as unlike the inspection technologies by the tubular body, this technology checks the condition of the annular through the connector, an element that will not suffer deformation or influence of hydrostatic pressure.
- the application published as BRPI090741 1 presents a technique for monitoring and measuring the amount of water invaded in the annular.
- the system and method perform the analysis and volumetric composition of exhaust gases, as well as the detection of water flooding.
- the invention also measures pressure and temperature and the gas flow in the annular, this being through a discharge valve.
- the invention came to solve problems with the measurement of composition and volume such as example gas chromatography and mass spectrometry, etc; which are made using samples collected and transported to a laboratory.
- the purpose of this invention was to speed up the measurement by placing analyzers in line with a processing and recording unit, using specific software for interpreting the information.
- the patent US9400227B2 discloses a system and method for detecting the invasion of fluid in an annular space in a tubular structure.
- the system includes a thermal element and a temperature sensor element placed in close proximity to each other in the annular space of the tubular structure.
- a thermal signal is generated by the thermal element.
- the temperature sensor element is connected to a monitor that monitors and processes the thermal signal. As the thermal signal changes when conducted through different types of fluids, the invasion of an annular space by sea water that normally contains oil or gas can be safely detected.
- the US6171025 patent presents a method for detecting pipeline leakage, in which a vacuum is maintained in the pipe-in-pipe with a vacuum pump having a discharge reservoir that is monitored for the appearance of water vapors and hydrocarbons.
- the detection of leakage in the ducts is achieved by maintaining a gas at a nominally constant pressure in the annular and thus monitoring the annular in case of pressure increase, indicating the presence of water or intrusion of product.
- the object of the invention is a system that not only identifies the presence of water in the annular of a flexible duct in operation, but also quantifies the pressure of the annular to any depth.
- the present invention aims to solve the problems of the state of the art described above in a practical and efficient way.
- the objective of the present invention is to present a method and an equipment (device) capable of measuring the pressure value inside the annular of a flexible duct in operation allowing to directly infer if this annular is watertight or not watertight.
- the present invention provides a system for detecting the tightness of a flexible duct by measuring the pressure of the annular from a flexible duct connector comprising: an ROV comprising an element of arm adapted to move the main device, until the device is fitted to the connector relief valve; more precisely in the recess where the relief valve is present.
- the invention describes a method of operating the equipment for detecting the tightness of the annular in the flexible duct, the operation of which leads to a critical analysis of the results and thus depending on the indication of the initial pressure and final pressure values before and after the movement of the piston.
- the invention contains a chamber for capturing sampling of the exhausted fluids of the annular by inducing the opening of the relief valve by reducing the external pressure.
- the device contains a hexagon socket for uninstalling the relief valve or plug installed in the flexible duct connector.
- Figure 1 illustrates a schematic view of the annular tightness detection system of a flexible duct from its connector, the representation of which contemplates all its parts, according to the main configuration of the present invention.
- Figure 2 illustrates the device that is coupled to the connector, representing the main embodiment of the invention.
- Figure 3 illustrates the invention with a sampling chamber attached.
- Figure 4 illustrates the invention with a handle for removing the relief valve.
- Figure 5 illustrates the arrangement of connectors and flexible ducts in typical subsea installations.
- Figure 1 illustrates a schematic view of the annular tightness detection system of a flexible duct from its connector, the representation of which contemplates all its parts, according to the main configuration of the present invention.
- Figure 2 details the main object, the main suggested embodiment.
- the invention consists of a method of verifying the sealing condition of the submarine flexible ducts annular by measuring the annular pressure. This measurement will be made using the relief valve (5) present in the flexible duct connectors (1).
- the invention uses a device controlled by a "Remotely Operated Vehicle” Remotely Operated Vehicle ROV (2).
- This device consists of a set in the form of a cylinder (3) and a plunger (4) (piston-cylinder configuration), which will be installed in the recess where the relief valve (5) of the flexible duct connector is present. (1 ).
- the cylinder (3) has a sealing system (6) that provides tightness between the external environment and the frontal region of the cylinder piston, where the relief valve external part (5) is located.
- the invention For positioning the cylinder assembly (3), piston (4) and activating its sealing system (6), the invention has a coupling and anchoring system (8), similar to the grips, controlled by ROV (2 ) that hug the flexible duct connector (1) by installing the device on the relief valve recess (5) of the duct connector (1) and sealing the cylinder (3) of the device against the valve recess wall (5) .
- the invention must cover any system for coupling the device and driving the sealing system.
- the sealing of the device on the recess wall of the valve (5), providing watertightness to the external environment, can be done by energizing polymeric rings or metallic rings against the wall and bottom of the recess, as well as opening thread threads in the recess wall or other mechanical device that promotes fixation permanent or not.
- the method of checking the tightness of the annular by measuring the pressure of the annular is to move the plunger (4) of the device in order to impose a pressure drop on the outside of the relief valve of at least 2 bar, thus inducing the activation of this valve (the relief valves of the flexible duct connectors are automatically activated when the difference between the annular pressure and the external pressure is greater than 2 bar ).
- the device's pressure gauge (7) indicates the pressure that the valve (5) opened and in this way, it concludes about the pressure at which the annular is.
- the method does not necessarily require the activation of the valve in order to conclude that the annulus of the flexible duct is watertight.
- the pressure stabilization in the pressure gauge at a pressure lower than the hydrostatic pressure indicates that the annulment it is at a lower pressure than the hydrostatic pressure and, therefore, it is concluded that there is no communication between the annular and the external environment, that is, the annular is watertight.
- the device may contain a chamber (10) for sampling the exhausted fluids of the annular by inducing the opening of the relief valve (5) by reducing the external pressure through displacement of the piston (4) the device.
- the connection of the sampling chamber (10) can occur through the connection that engages the pressure gauge (7) and connects it to the cylinder (3).
- the device may contain a hexagon socket (13) for uninstalling the relief valve (5) or the plug (12) installed in the flexible connector after the device is sealed on the valve recess wall (5) or plug, aiming at measuring the pressure of the ring and injection of fluids or chemicals into the ring.
- Figure 4 illustrates the present modified invention (being an alternative embodiment) so that the hexagon socket (13) connected to a rod (14) with coupling and anchoring structure (8), built to be twisted through the manipulator (15) and conducted by the ROV arm (2) and thus remove the relief valve (5).
- the pilot chamber (19) used to pilot the piston system (4) and cylinder (3) with the liquid inlet must be replaced by the chamber (20), which allows the rod (14) and socket to operate hexagonal (13) and is connected to the cylinder (3).
- Figure 5 shows that the system and method proposed by the present invention can be applied to flexible ducts and connectors subjected to high hydrostatic pressures (approximately 250 bar), as in deep underwater applications, without high interferences in the measurements.
- Example 1 Figure 5 also shows examples in which 4 connectors are arranged vertically and 3 horizontally.
- the first 2 physically connected to each other and being surrounded by 50 bar of static pressure pE and the 2 seconds, also physically interconnected to each other, surrounded by 100 bar of static pressure PEST.
- the reference pressure for tightness analysis becomes different for each arrangement of connectors and spans, this referring to the intermediate flexible duct (16).
- the connectors interconnect the bore of through the flanged connection (d) and do not interconnect the ring annulment.
- the connectors located at the ends of each section will feel the flooded ring; and with the flooding, each connector will indicate the hydrostatic pressure, respectively 50 and 100 bar, by the manometer.
- the pressure of the annular will be up to 50 bar.
- Example 2 The analysis is for the bottom riser, which includes connectors 17d and 17e, located at each end of this section.
- the pressure result with a value less than 100 bar indicates that the section is watertight. Values between 100 and 250 bar indicate flooding.
- Example 3 The analysis is of the flexible duct commonly called flowline, which includes connectors 18e and 18f, located at each end of this section. A pressure result with a value less than 100 bar indicates tightness, and a pressure result of 250 bar indicates the total flooding of this section.
- Example 4 When the ring is watertight, there is a column of permeate gas (C02, CH4, etc.) filling the ring.
- the pressure of this gas in the upper connector region is at most equal to the hydrostatic pressure at that point due to the action of the relief valves and in the lower connector it is equal to the pressure value in the upper connector region added to the gas column. Due to the low specific gravity of the gas, the pressure of the lower connector can be approached with that of the upper connector.
- Example 5 In the case of “flowlines”, where there is little difference in depth (external pressure) between the connectors of the spans, one must consult the gas permeation model of the flexible duct manufacturer in order to verify the value maximum pressure to be reached only due to the permeate gases. We must consider that the permeation model of the largest manufacturer of flexible ducts informs that the maximum pressure reached in the annular due to the permeate gases is approximately equal to 100 bar. Therefore, in “flowlines” installed at depths greater than 1000m (100bar of external pressure), it can also be concluded that: if the pressure of the annular is less than the external pressure, then the annular is watertight.
- the plunger advances by pressing the sea water on its front in order to check if the seals are sealing. For this, the pressure of the manometer is read and checked for stabilization, confirming the seal;
- a blocking valve (11) and a sampling chamber (10) are connected in place of the manometer connection (7) and this is cylindrical in shape and with vacuum;
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
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- Examining Or Testing Airtightness (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2108354.8A GB2601580B (en) | 2018-12-03 | 2019-12-02 | System and method for detecting the watertightness of the annular space in flexible pipes |
AU2019391606A AU2019391606B2 (en) | 2018-12-03 | 2019-12-02 | System and method for detecting the watertightness of the annular space in flexible pipes |
US17/298,482 US11940352B2 (en) | 2018-12-03 | 2019-12-02 | System and method for detecting watertightness in the annular space of flexible lines |
EP19893290.7A EP3892817A4 (en) | 2018-12-03 | 2019-12-02 | SYSTEM AND METHOD OF DETERMINING THE WATER TIGHTNESS OF THE ANNEAL SPACE IN FLEXIBLE PIPE |
NO20210827A NO20210827A1 (en) | 2018-12-03 | 2019-12-02 | System and method for detecting the watertightness of the annular space in flexible pipes |
CA3121821A CA3121821A1 (en) | 2018-12-03 | 2019-12-02 | System and method for detecting the watertightness in the annular space in flexible lines |
CN201980079992.2A CN113383145B (zh) | 2018-12-03 | 2019-12-02 | 用于检测柔性管路的环形空间中的防水性的系统及方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR102018075029-1A BR102018075029B1 (pt) | 2018-12-03 | Sistema para a detecção de estanqueidade de anular em um duto flexível a partir de um conector e método para a detecção de estanqueidade em um duto flexível a partir de um conector | |
BRBR102018075029-1 | 2018-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020113296A1 true WO2020113296A1 (pt) | 2020-06-11 |
Family
ID=70974104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2019/050513 WO2020113296A1 (pt) | 2018-12-03 | 2019-12-02 | Sistema e método para detecção de estanqueidade do espaço anular em dutos flexíveis |
Country Status (8)
Country | Link |
---|---|
US (1) | US11940352B2 (pt) |
EP (1) | EP3892817A4 (pt) |
CN (1) | CN113383145B (pt) |
AU (1) | AU2019391606B2 (pt) |
CA (1) | CA3121821A1 (pt) |
GB (1) | GB2601580B (pt) |
NO (1) | NO20210827A1 (pt) |
WO (1) | WO2020113296A1 (pt) |
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US9400227B2 (en) | 2009-04-09 | 2016-07-26 | Schlumberger Technology Corporation | Method and system for detection of fluid invasion in an annular space of flexible pipe |
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US5883303A (en) * | 1998-02-10 | 1999-03-16 | Bliss; Brad D. | Apparatus and method for pigging, flooding, and pressure testing pipelines |
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US7591319B2 (en) * | 2006-09-18 | 2009-09-22 | Baker Hughes Incorporated | Gas activated actuator device for downhole tools |
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CA2904289C (en) * | 2008-08-15 | 2017-01-10 | Securus, Inc. | Pressure testing method and apparatus |
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BR102018069242B1 (pt) * | 2018-09-21 | 2022-01-18 | Petróleo Brasileiro S.A. - Petrobras | Sistema e método detecção de alagamento em um duto flexível a partir de um conector do duto flexível |
NO20220719A1 (en) * | 2019-12-05 | 2022-06-23 | Petroleo Brasileiro Sa Petrobras | System and method for reducing pressure and drainage in the annulus of flexible lines |
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US11719716B1 (en) * | 2022-05-12 | 2023-08-08 | Astra Navigation, Inc. | Measuring distance traversed or speed |
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2019
- 2019-12-02 AU AU2019391606A patent/AU2019391606B2/en active Active
- 2019-12-02 NO NO20210827A patent/NO20210827A1/en unknown
- 2019-12-02 GB GB2108354.8A patent/GB2601580B/en active Active
- 2019-12-02 CN CN201980079992.2A patent/CN113383145B/zh active Active
- 2019-12-02 CA CA3121821A patent/CA3121821A1/en active Pending
- 2019-12-02 US US17/298,482 patent/US11940352B2/en active Active
- 2019-12-02 WO PCT/BR2019/050513 patent/WO2020113296A1/pt unknown
- 2019-12-02 EP EP19893290.7A patent/EP3892817A4/en active Pending
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See also references of EP3892817A4 |
Also Published As
Publication number | Publication date |
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CA3121821A1 (en) | 2020-06-11 |
EP3892817A1 (en) | 2021-10-13 |
GB2601580B (en) | 2023-05-03 |
AU2019391606B2 (en) | 2025-06-05 |
GB202108354D0 (en) | 2021-07-28 |
EP3892817A4 (en) | 2022-08-17 |
BR102018075029A2 (pt) | 2020-06-16 |
CN113383145B (zh) | 2024-11-08 |
CN113383145A (zh) | 2021-09-10 |
US11940352B2 (en) | 2024-03-26 |
AU2019391606A1 (en) | 2021-06-24 |
NO20210827A1 (en) | 2021-06-25 |
US20220034747A1 (en) | 2022-02-03 |
GB2601580A (en) | 2022-06-08 |
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