WO2021102537A1 - Conduit coalesceur pour le transport de fluides comprenant au moins deux phases immiscibles - Google Patents

Conduit coalesceur pour le transport de fluides comprenant au moins deux phases immiscibles Download PDF

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Publication number
WO2021102537A1
WO2021102537A1 PCT/BR2020/050479 BR2020050479W WO2021102537A1 WO 2021102537 A1 WO2021102537 A1 WO 2021102537A1 BR 2020050479 W BR2020050479 W BR 2020050479W WO 2021102537 A1 WO2021102537 A1 WO 2021102537A1
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WO
WIPO (PCT)
Prior art keywords
duct
wall
helical
longitudinal
coalescing
Prior art date
Application number
PCT/BR2020/050479
Other languages
English (en)
Portuguese (pt)
Inventor
Erick Fabrizio QUINTELLA ANDRADE COELHO
Marcos Aurélio de SOUZA
Original Assignee
Petróleo Brasileiro S.A. - Petrobras
Universidade Federal De Itajubá - Unifei
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Petróleo Brasileiro S.A. - Petrobras, Universidade Federal De Itajubá - Unifei filed Critical Petróleo Brasileiro S.A. - Petrobras
Publication of WO2021102537A1 publication Critical patent/WO2021102537A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0217—Separation of non-miscible liquids by centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/04—Breaking emulsions
    • B01D17/045—Breaking emulsions with coalescers

Definitions

  • the present invention is related to oil production techniques. More specifically, the present invention is related to techniques for transporting oil produced through pipelines.
  • the document CA2661579A1 discloses a method for the separation of aqueous bitumen containing a suspension of oil and sand that involves exposing the suspension to a flow in a helical pipeline, generating a centrifugal force in order to provide the separation of the aqueous bitumen.
  • WO2014047527A2 discloses a self-regulating pressure tube for fluid transport and particle separation comprising spaced arcuate fins including a first end that is fixedly connected to the cylindrical inner wall of the tube and a second end that extends to inside the duct.
  • the set of arcuate fins is fixed to the inner part of the tube in order to generate a vortex in the fluid, increasing the tangential velocity of the fluid, providing the separation of immiscible liquids present in the fluid.
  • the tube disclosed by WO2014047527A2 can only regulate the pressure inside the tube because its fins have a length of approximately 1/4 of the diameter of the tube, and are fixed to the wall and arranged longitudinally in a helical fashion only in order to provide rotation in the portion of fluid that is closest to the wall.
  • This rotation forced by the helical trajectory of the fins, provides the rotation of the fluid portion in the device's core, which in turn flows free from the presence of walls, forming a vortex. It is this vortex inside the tube, with variable pressure, that gives the device's pressure regulation characteristic.
  • the document US3423294A is directed to a process of forming a continuous ring of fluid adjacent to a tube surface.
  • a spiral fin is provided inside the duct. This ensures that fluid of lower density flows in a vortex created by the fin.
  • the vortex generated in both cases cited is responsible for forming a zone of variable pressure inside the device, which has a strong tendency to shear the drops that are moving in this region, threatening to break its integrity and, therefore, turning them into smaller drops. This characteristic can favor the formation of an emulsion, which is exactly what you want to eliminate in the situations described.
  • the present invention aims to solve the problems of the prior art described above in a practical and efficient manner.
  • the present invention aims to provide a mechanical apparatus for transporting fluids comprising immiscible phases that favors coalescence, through, for example, the induction of rotation to the fluid so that the centrifugal field created contributes to the coalescence of the drops and further separation of the emulsion components, whereby vortex generation is avoided.
  • the present invention provides a coalescing duct for fluid transport comprising at least two immiscible phases comprising at least one longitudinal partition wall of helical shape, in which the partition wall divides the interior space of the duct in at least two helical-shaped longitudinal chambers.
  • Figure 1 illustrates an optional configuration of the coalescing duct of the present invention.
  • Figure 1a illustrates a side view of the duct shown in Figure 1.
  • Figures 2a, 2b, 2c and 2d illustrate optional configurations of the coalescing duct of the present invention in which different steps are adopted for the at least one longitudinal partition wall of helical shape.
  • Figure 3 illustrates a schematic sectional view of an optional configuration of the coalescing pipeline of the present invention.
  • Figure 4 illustrates a schematic view of a coalescing pipeline in which a sequence of cross-sections of the pipeline is illustrated.
  • the present invention relates to a coalescing duct for transporting fluids comprising at least two immiscible phases.
  • the invention can be applied in various stages of an oil production process, from extraction to transport between stages of industrial processing of this fluid, in which the fluid extracted from a well comprises oil and water, immiscible liquids.
  • the fluid may additionally comprise a gas phase and solid particles (impurities).
  • the main objective of the invention is to make the fluid flow inside the coalescing duct provide the coalescence of this fluid, causing the oil and water phases to coalesce, which facilitates its separation and subsequent processing.
  • coalescing duct that will be described is applied connecting a gravitational separator to an emulsion treatment equipment, such as electrostatic treaters, hydrocyclones, among others.
  • the purpose of the invention is to remodel the interior of straight ducts that transport fluids that comprise at least two immiscible phases, such as the ducts that connect a gravitational separator to an emulsion treater, inserting in the leaked space of these straight ducts a mechanical device that continuously induces rotation to the emulsion that passes through it.
  • the invention provides a coalescing duct for fluid transport comprising at least two immiscible phases comprising at least one longitudinal partition wall of helical shape, wherein the partition wall divides the inner space of the duct into at least two chambers longitudinal helical shape.
  • Figure 1 illustrates an optional configuration of the coalescing duct of the present invention.
  • Figure 1a illustrates a side view of the duct shown in Figure 1 .
  • the wall 3 of the duct 5 is illustrated in a translucent shape to allow the observation of its interior and of at least one longitudinal partition wall 1 of helical shape.
  • the at least one partition wall 1 helical extends continuously from a point on wall 3 of duct 5 to a point on wall 3 of duct 5 diametrically opposite the first.
  • the coalescing duct 5 provides a "rigid body movement" for the portion of fluid flowing through the duct 5 as well as a radial displacement of the denser particles from the center of the tube to the wall 3 of the duct 5, by the centrifugal effect generated by the helical formation of the chambers.
  • each dividing wall 1 can comprise a fixed pitch, or a variable pitch, that is, the angle that the dividing wall 1 is twisted can be fixed or variable. Additionally, the pitch can be shorter or longer depending on the needs of each application.
  • the step variation will determine whether the centrifugal movement provided in the flow will be of greater or lesser intensity. This intensity of centripetal force generated will determine the intensity of the phase separation of the flow.
  • Figures 2a, 2b, 2c, and 2d illustrate optional configurations of the coalescing duct 5 of the present invention in which different steps are adopted for the at least one longitudinal partition wall 1 of helical shape. As is widely known, the smaller the step of the helical movement of the dividing wall 1 , the greater will be the centrifugal acceleration generated in the fluid that is displaced within it. [0036] Therefore, the choice of step can vary according to the application and according to the acceleration that you want to print to the fluid. Thus, this characteristic must be defined by the technician responsible for each application of this invention.
  • FIG. 3 schematically illustrates a sectional view of a coalescing duct 5 configuration in which four dividing walls 1 are adopted, forming eight helical chambers 2 .
  • helical longitudinal chambers 2 are formed with a cross section formed by two partition walls 1 in V and wall 3 of duct 5.
  • each partition wall 1 extends from a point of wall 3 of duct 5 to a opposite point of wall 3 of duct 5, dividing the duct section into two halves.
  • FIG 4 illustrates a schematic view of a coalescing duct 5 in which a sequence of cross-sections of the duct 5 is illustrated.
  • a 2' longitudinal chamber is highlighted so that it is possible to observe the displacement induced to the fluid by the walls.
  • dividers 1 Note that the fluid trajectory line in each 2' longitudinal chamber has a helical shape, which favors coalescence.
  • Another advantage of the invention in view of the state of the art consists in the fact that, since all the helical walls 1 extend continuously from a point on the tube wall 3 to the diametrically opposite point, it is not possible to form a vortex in the central region of the device.
  • the at least one helical partition wall 1 divides the duct 5 into at least two isolated chambers 2, makes the fluid moving in each chamber 2 completely isolated from the moving fluid in the other chambers, allowing for greater separation capacity for fluids of different densities.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

La présente invention concerne un conduit coalesceur pour le transport de fluides comprenant au moins deux phases immiscibles, comportant au moins une cloison (1) longitudinale de forme hélicoïdale, la cloison (1) divisant l'espace intérieur du conduit (5) en au moins deux chambres (2) longitudinales de forme hélicoïdale.
PCT/BR2020/050479 2019-11-26 2020-11-17 Conduit coalesceur pour le transport de fluides comprenant au moins deux phases immiscibles WO2021102537A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR102019024935-8A BR102019024935A2 (pt) 2019-11-26 2019-11-26 duto coalescedor para transporte de fluidos que compreendem pelo menos duas fases imiscíveis
BRBR1020190249358 2019-11-26

Publications (1)

Publication Number Publication Date
WO2021102537A1 true WO2021102537A1 (fr) 2021-06-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2020/050479 WO2021102537A1 (fr) 2019-11-26 2020-11-17 Conduit coalesceur pour le transport de fluides comprenant au moins deux phases immiscibles

Country Status (2)

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BR (1) BR102019024935A2 (fr)
WO (1) WO2021102537A1 (fr)

Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2300129A (en) * 1940-11-04 1942-10-27 Mccurdy Howard Helical flow separator
US2413324A (en) * 1939-06-09 1946-12-31 Holzwarth Gas Turbine Co Gas purifying apparatus
US2941619A (en) * 1958-12-22 1960-06-21 John J Sochor Process of and apparatus for separating gas and liquid fractions from petroleum gas oil stream
US4376676A (en) * 1981-10-19 1983-03-15 Gill Carl L In-line separator for crude oil
US4481020A (en) * 1982-06-10 1984-11-06 Trw Inc. Liquid-gas separator apparatus
US4678588A (en) * 1986-02-03 1987-07-07 Shortt William C Continuous flow centrifugal separation
US4855050A (en) * 1984-09-10 1989-08-08 Senyard Sr Corley P Centrifugal oil separator for removing oil from a waste flowing stream
GB2220374A (en) * 1988-06-29 1990-01-10 Amoco Corp "a liquid separator"
US4900433A (en) * 1987-03-26 1990-02-13 The British Petroleum Company P.L.C. Vertical oil separator
EP0462852A1 (fr) * 1990-06-18 1991-12-27 Institut Français du Pétrole Procédé et dispositif de séparation entre une phase fluide continue et une phase dispersée, et application
US5084189A (en) * 1990-09-21 1992-01-28 Richter Systems, Inc. Method and apparatus for separating fluids having different specific gravities
DE9209906U1 (de) * 1992-07-23 1993-11-25 Schmidt Peter Vorrichtung zur Trennung von Flüssigkeitsgemischen
WO1996036430A1 (fr) * 1995-05-17 1996-11-21 Atlantic Richfield Company Systeme de separateur pour des fluides de production en puits
CA2221191A1 (fr) * 1995-05-17 1996-11-21 Atlantic Richfield Company Systeme de separateur pour des fluides de production en puits
US6036749A (en) * 1997-08-26 2000-03-14 Petroleo Brasileiro S.A. - Petrobras Helical separator
WO2001000296A1 (fr) * 1999-06-28 2001-01-04 Statoil Asa Appareil permettant de separer un ecoulement fluidique en une phase gazeuse et en une phase liquide
US20020046977A1 (en) * 1999-03-22 2002-04-25 Universal Separators, Inc. Multi-directional flow gravity separator
US20050173337A1 (en) * 2003-04-18 2005-08-11 Paul Costinel Method and apparatus for separating immiscible phases with different densities
GB2466734A (en) * 2006-02-25 2010-07-07 Cameron Int Corp A method for starting up a helical separation system for operation in separating a multiphase fluid stream comprising heavier and lighter fluid components
BRPI0707546A2 (pt) * 2006-02-20 2011-05-03 Shell Int Research separador em linha, e, uso do separador em linha
CN105999770A (zh) * 2016-07-26 2016-10-12 中国科学院力学研究所 一种油水螺旋导流分离装置
WO2017164745A1 (fr) * 2016-03-24 2017-09-28 Spiro Enterprises B.V. Dispositif de séparation
EP3241598A1 (fr) * 2016-05-06 2017-11-08 Hamilton Sundstrand Corporation Séparateur de phase gaz-liquide
WO2018015777A1 (fr) * 2016-07-22 2018-01-25 Total Sa Séparateur gaz-liquide, extracteur d'hydrocarbures et procédé de séparation associé

Patent Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2413324A (en) * 1939-06-09 1946-12-31 Holzwarth Gas Turbine Co Gas purifying apparatus
US2300129A (en) * 1940-11-04 1942-10-27 Mccurdy Howard Helical flow separator
US2941619A (en) * 1958-12-22 1960-06-21 John J Sochor Process of and apparatus for separating gas and liquid fractions from petroleum gas oil stream
US4376676A (en) * 1981-10-19 1983-03-15 Gill Carl L In-line separator for crude oil
US4481020A (en) * 1982-06-10 1984-11-06 Trw Inc. Liquid-gas separator apparatus
US4855050A (en) * 1984-09-10 1989-08-08 Senyard Sr Corley P Centrifugal oil separator for removing oil from a waste flowing stream
US4678588A (en) * 1986-02-03 1987-07-07 Shortt William C Continuous flow centrifugal separation
US4900433A (en) * 1987-03-26 1990-02-13 The British Petroleum Company P.L.C. Vertical oil separator
GB2220374A (en) * 1988-06-29 1990-01-10 Amoco Corp "a liquid separator"
EP0462852A1 (fr) * 1990-06-18 1991-12-27 Institut Français du Pétrole Procédé et dispositif de séparation entre une phase fluide continue et une phase dispersée, et application
US5084189A (en) * 1990-09-21 1992-01-28 Richter Systems, Inc. Method and apparatus for separating fluids having different specific gravities
DE9209906U1 (de) * 1992-07-23 1993-11-25 Schmidt Peter Vorrichtung zur Trennung von Flüssigkeitsgemischen
WO1996036430A1 (fr) * 1995-05-17 1996-11-21 Atlantic Richfield Company Systeme de separateur pour des fluides de production en puits
CA2221191A1 (fr) * 1995-05-17 1996-11-21 Atlantic Richfield Company Systeme de separateur pour des fluides de production en puits
US6036749A (en) * 1997-08-26 2000-03-14 Petroleo Brasileiro S.A. - Petrobras Helical separator
US20020046977A1 (en) * 1999-03-22 2002-04-25 Universal Separators, Inc. Multi-directional flow gravity separator
WO2001000296A1 (fr) * 1999-06-28 2001-01-04 Statoil Asa Appareil permettant de separer un ecoulement fluidique en une phase gazeuse et en une phase liquide
US20050173337A1 (en) * 2003-04-18 2005-08-11 Paul Costinel Method and apparatus for separating immiscible phases with different densities
BRPI0707546A2 (pt) * 2006-02-20 2011-05-03 Shell Int Research separador em linha, e, uso do separador em linha
GB2466734A (en) * 2006-02-25 2010-07-07 Cameron Int Corp A method for starting up a helical separation system for operation in separating a multiphase fluid stream comprising heavier and lighter fluid components
WO2017164745A1 (fr) * 2016-03-24 2017-09-28 Spiro Enterprises B.V. Dispositif de séparation
EP3241598A1 (fr) * 2016-05-06 2017-11-08 Hamilton Sundstrand Corporation Séparateur de phase gaz-liquide
WO2018015777A1 (fr) * 2016-07-22 2018-01-25 Total Sa Séparateur gaz-liquide, extracteur d'hydrocarbures et procédé de séparation associé
CN105999770A (zh) * 2016-07-26 2016-10-12 中国科学院力学研究所 一种油水螺旋导流分离装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MITRE JOÃO F., LAGE PAULO L.C., SOUZA MARCOS A., SILVA ELI, BARCA LUIZ FERNANDO, MORAES ANTONIO O.S., COUTINHO RAQUEL C.C., FONSEC: "Droplet breakage and coalescence models for the flow of water-in-oil emulsions through a valve-like element", CHEMICAL ENGINEERING RESEARCH AND DESIGN, vol. 92, no. 11, 1 November 2014 (2014-11-01), pages 2493 - 2508, XP055830263, ISSN: 0263-8762, DOI: 10.1016/j.cherd.2014.03.020 *

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