EP4435239A1 - Procédé d'installation d'un système de récupération d'énergie sous-marin dans une masse d'eau et installation de production de fluide associée - Google Patents

Procédé d'installation d'un système de récupération d'énergie sous-marin dans une masse d'eau et installation de production de fluide associée Download PDF

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Publication number
EP4435239A1
EP4435239A1 EP23305411.3A EP23305411A EP4435239A1 EP 4435239 A1 EP4435239 A1 EP 4435239A1 EP 23305411 A EP23305411 A EP 23305411A EP 4435239 A1 EP4435239 A1 EP 4435239A1
Authority
EP
European Patent Office
Prior art keywords
equipment
module
evaporator
working fluid
fluid
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP23305411.3A
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German (de)
English (en)
Inventor
Jerome ANFRAY
Remy MARMIER
Nicolas CONGAR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TotalEnergies Onetech SAS
Original Assignee
TotalEnergies Onetech SAS
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 TotalEnergies Onetech SAS filed Critical TotalEnergies Onetech SAS
Priority to EP23305411.3A priority Critical patent/EP4435239A1/fr
Priority to PCT/EP2024/057829 priority patent/WO2024200291A1/fr
Publication of EP4435239A1 publication Critical patent/EP4435239A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether

Definitions

  • the present invention concerns a method of installing an underwater energy recovery system in thermal connection with a fluid production and/or injection piping laying on the bottom of a body of water, the underwater energy recovery system comprising an organic Rankine cycle having equipment comprising an evaporator to evaporate the working fluid, and optionally a pre-heater to heat the working fluid upstream of the evaporator, the equipment further comprising a turbine coupled to a power generator connected to an electrical controller, to expand the working fluid after evaporation, a condenser to condense the working fluid after expansion, a drum to collect the condensed working fluid and a pump to compress the collected working fluid, the method comprising lowering the equipment in the body of water and thermally connecting at least a pipe of the fluid production and/or injection piping to the evaporator and advantageously to the pre-heater.
  • Hydrocarbon production installations require electrical power to be operated.
  • subsea ground architectures use electrical power to operate various equipment such as pumps, gas injection devices, valves, etc.
  • part of the produced fluid is used as fuel to generate electrical power which is conveyed to the bottom of the body of water.
  • Hydrocarbon production installation often produce fluids which have a temperature significantly above the ambient temperature.
  • the flow which is extracted from the reservoir is quite warm, since the reservoir is often located deep in the ground.
  • the hydrocarbon production flow therefore conveys a thermal energy, which is totally lost at the surface of the well or downstream the well location.
  • Thermal energy can be recovered using an organic Rankine cycle (ORC) to convert this energy into electricity through a turbine/alternator.
  • ORC organic Rankine cycle
  • An organic Rankine cycle uses a heat source that heats up and vaporizes in an evaporator an intermediate working fluid, used to drive a turbine. Downstream the turbine, the working fluid at low pressure (superheated or in bi-phasic phase) is fully condensed by a cold source prior being pressure boosted through a circulating pump. This circulating pump then sends back the intermediate fluid to the evaporator.
  • FR 2 738 872 discloses such an energy recovery system located at the bottom of a body of water.
  • the energy recovery system uses, as a heat source, production flow lines laying on the ground at the bottom of the body of water.
  • a thermal cycle is carried out to recover heat from the fluid flowing in the production lines, to partially transform the heat into mechanical energy and/or electrical energy.
  • One aim of the invention is therefore to provide an energy recovery system from hot fluids produced from the ground in an offshore fluid production installation, which supplies high electrical power, while being simple to put in place.
  • the subject matter of the invention is an installation method of the above-mentioned type, characterized in that lowering the equipment comprises lowering a first support module comprising a main frame and a first part of the equipment of the organic Rankine cycle borne by the main frame and lowering at least a second equipment module comprising at least a second part of the equipment of the organic Rankine cycle, laying the second equipment module on the first support module and connecting the first part of the equipment to the second part of the equipment.
  • the method according to the invention may comprise one or more of the following feature(s), taken alone, or according to any technical feasible combination:
  • the invention also concerns a fluid production installation comprising:
  • a first hydrocarbon production installation 10 having an underwater energy recovery system 20 put in place by an installation method according to the invention is shown in figure 1 .
  • the hydrocarbon production installation 10 is located offshore. It comprises a bottom assembly 11A located at the bottom 16 of a body of water 12, a surface assembly 11B located at the surface of the body of water 12 and a connection assembly 11C fluidly and electrically connecting the bottom assembly 11A to the surface assembly 11B.
  • the hydrocarbon production installation 10 comprises at least a production well 14 connecting a downhole reservoir (not shown) to the bottom 16 of the body of water 12.
  • the bottom assembly 11A comprises a fluid production and/or injection piping assembly 18 laying on the bottom 16 of the body of water 12 and the underwater energy recovery system 20, thermally connected to the fluid production and/or injection piping assembly 18.
  • the piping assembly 18 comprises in particular at least a wellhead 22 closing each well 14, advantageously a high integrity pressure production system 24 (or "HIPPS"), and flow lines 26 connecting each wellhead 26 to at least a fluid collection manifold 28 connected to the connection assembly 11C.
  • HPPS high integrity pressure production system
  • the fluid production and/or injection piping assembly 18 further comprises two tappings 30A, 30B configured to connect to a flow line bypass 32 carried by the energy recovery system 20, as will be explained below.
  • connection assembly 11C comprises at least a riser 34 connecting the or each manifold 28 to the surface assembly 11B to transport fluid recovered from the well 14 and at least an umbilical 36, to carry a potential excess of electrical energy produced by the energy recovery system 20 to the surface assembly 11C.
  • the surface assembly 11B is for example a platform, a barge, a vessel such as a FPSO (Floating Production Storage and Offloading) or a FSRU (Floating Storage and Regasification Unit) or to onshore facilities (subsea to shore case).
  • FPSO Floating Production Storage and Offloading
  • FSRU Floating Storage and Regasification Unit
  • the energy recovery system 20 is based on an organic Rankine cycle 50 which thermally interacts with the fluid production and/or injection piping 18 through the bypass 32.
  • the cycle 50 comprises equipment 52 processing a working fluid in the cycle 50.
  • the equipment 52 here comprises a preheater 54, to preheat the working fluid, an evaporator 56, to evaporate the working fluid preheated in the preheater 54, a turbine 58 to expand the evaporated working fluid, and a generator 60 coupled to the turbine 58 along with a transformer 62 and a controller 64.
  • the equipment 52 further comprises a condenser 66 to condense the working fluid after expansion, a drum 68 to collect the condensed working fluid and a pump 70 to increase the pressure of the collected working fluid and to direct it towards the preheater 54.
  • the preheater 54 when present, is placed in a heat relationship with the bypass 32, the bypass 32 receiving production fluid circulating from an upstream tapping 30A to a downstream tapping 30B.
  • the evaporator 56 is configured to place in a heat exchange relationship the production fluid circulating in the bypass 32 with the working fluid downstream of the upstream tapping 30A and upstream of the preheater 54.
  • the preheater 54 and the evaporator 56 both have an elongated tubular shape. They are preferably placed on top of one another, parallel to an elongation axis A-A'.
  • the turbine 58 is a gas expansion turbine having a rotor rotating around a rotation axis B-B'.
  • the rotation axis B-B' is parallel to the elongation axis A-A'.
  • the transformer 62 is electrically connected to the generator 60 through the controller 64.
  • the controller 64 and the generator 60 extend perpendicularly to the rotation axis B-B' of the turbine 58, in alignment with the elongation axis A-A' of the preheater 54 and of the evaporator 56.
  • the transformer 62 is equipped with two terminals 72A, 72B configured to receive terminals of at least an umbilical 36 to connect to the surface assembly 11B and/or to utilities of the fluid production and/or injection piping assembly 18, such as pumps, gas injection devices, and/or valves.
  • the condenser 66 for example comprises a bundle of tubes 74 held in a frame 76. It allows contactless heat transfer between water from the body of water 12 circulating externally to the tubes 74, and working fluid circulating within the tubes 74.
  • the condenser 66 extends along a condenser axis C-C' to which the tubes 74 are advantageously parallel.
  • the condenser axis C-C' is parallel or coaxial with the rotation axis B-B' of the turbine 58, in an axial prolongation of the turbine 58. It is parallel and adjacent to the elongation axis A-A' of the preheater 54 and of the evaporator 56.
  • the drum 68 extends vertically in an axial prolongation of the condenser 66, opposed to the turbine 58.
  • the pump 70 is housed in the axial prolongation of the elongation axis A-A' of the evaporator 56, perpendicularly to the drum 68.
  • the energy recovery system 20 comprises a first support module 80, an electrical module 82, and an exchanger module 84, the modules 80, 82 being borne by the first support module 80.
  • Each module 80, 82, 84 comprises at least part of the equipment 52 of the organic Rankine cycle 50.
  • Each module 80, 82, 84 is an independent structure movable in one piece independently of the other modules. All parts borne by each module 80, 82, 84 are jointly movable with the module 80, 82, 84 independently of the other modules.
  • the support module 80 comprises a main frame 90, a main piping 92 and a first part of the equipment 52.
  • the first part of the equipment here comprises the condenser 66, the drum 68, and the pump 70.
  • the main frame 90 for example comprises a lower support having a lower surface laying on the bottom 16 of the body of water 12 and an upper surface onto which the equipment 52 of the support module 80 is mounted. It may comprise a protecting cover (not shown).
  • the upper surface of the main frame 90 lower support also receives the electrical module 82 and the exchanger module 84 which are laid onto it during the installation of the energy recovery system 20 using the method according to the invention.
  • the main piping 92 connects the first part of the equipment 52 located on the support module 80 with other parts of the equipment 52 located on other modules 82, 84.
  • the electrical module 82 also comprises a frame, holding a second part of the equipment 52 including the turbine 58, the generator 60, the transformer 62 and the controller 64.
  • the frame of the electrical module 82 holding the second part of the equipment 52 is movable independently of the support module 80.
  • the second part of the equipment 52 is thus movable jointly with the frame of the electrical module 82 to be put in place on the support module 80.
  • the exchanger module 84 also comprises a frame 96 holding a third part of the equipment 52 including the preheater 54 and the evaporator 56, advantageously on top of one another. It further comprises piping 98 to connect to the other modules 80, 82.
  • the frame of the exchanger module 84 holding the third part of the equipment 52 is movable independently of the support module 80 and of the electrical module 82.
  • the third part of the equipment 52 is thus movable jointly with the frame of the exchanger module 84 82 to be put in place on the support module 80.
  • the support module 80, the electrical module 82 and the exchanger module 84 preferably each weigh less than 200 T.
  • MSV Maneuver or Multipurpose Support Vessel
  • the maximum dimension of the support module 80 is advantageously less than 20 m, in particular comprised between 12 m and 18 m.
  • the length of the support module 80 is comprised between 10 m and 20 m
  • the width of the main module 80 is comprised between 5 m and 15 m
  • the height of the support module 80 is comprised between 1 m and 10 m.
  • the weight of the support module 80 is generally greater than 100 T, and is comprised for example between 150 T and 170 T.
  • the maximum dimension of the electrical module 82 is generally smaller than 10 m.
  • the length of the electrical module 82 is comprised between 5 m and 10 m
  • the width of the electrical module 82 is comprised between 0.5 m and 5 m
  • the height of the electrical module 82 is comprised between 1 m and 5 m.
  • the weight of the electrical module 82 is smaller than 100 T, it is for example comprised between 10 T and 50 T.
  • the maximum dimension of the exchanger module 84 is generally smaller than 10 m.
  • the length of the exchanger module 84 is comprised between 5 m and 10 m
  • the width of the exchanger module 84 is comprised between 0.5 m and 5 m
  • the height of the exchanger module 84 is comprised between 1 m and 5 m.
  • the weight of the exchanger module 84 is smaller than 100 T, it is for example comprised between 40 T and 70 T.
  • an installation vessel is loaded with the support module 80 holding at least a first part of the equipment 52.
  • the vessel is for example a MSV. It comprises a crane having a maximum capacity for example smaller than 300 T.
  • the support module 80 is lowered in the body of water 12 as a single unit carrying for example, the condenser 66, the drum 68, and the pump 70.
  • the lower surface of the main frame 90 is laid on the bottom 16 of the body of water 12 in the vicinity of a flow line 26.
  • the electrical module 82 is loaded in the laying vessel, in particular a MSV having a crane for example with a capacity of less than 300 T.
  • the electrical module 82 carrying the turbine 58, the generator 60 and the transformer 62 is thereafter lowered in the body of water 12 as a single unit. It is laid on the main frame of the support module 90, adjacent to the condenser 66, advantageously with the rotation axis A-A' of the turbine 68 parallel and/or coaxial with the condenser axis C-C'.
  • the exchanger module 84 is loaded on a laying vessel, in particular a MSV having a crane for example with a capacity of less than 300 T.
  • the exchanger module 84 is then lowered as a single unit in the body of water 12, including the frame 96 bearing the preheater 54, the evaporator 56 and preferably the bypass 32.
  • the frame 96 of the exchanger module 84 is laid on the support module 80, adjacent to the condenser 66 between the electrical module 82 on one side, the pump 70 on the other side.
  • the elongation axis A-A' of the preheater 54 and of the evaporator 56 is placed parallel to the rotation axis B-B' and also to the condenser axis C-C' in alignment with the transformer 62 and the pump 70.
  • the connectors 32A, 32B of the bypass are then connected to the tappings 30A, 30B on the flowline 26 such that warm fluid recovered in the flowline 26 can flow in the bypass 32 through the evaporator 56 and the preheater 54.
  • Piping present on each of the modules 80, 82 and 84 is connected to allow the working fluid to cycle from the preheater 54, to the evaporator 56, the turbine 58, the condenser 66, the drum 68 and the pump 70.
  • An umbilical 36 is connected to one of the terminals 72A and to utilities in the fluid production and/or piping assembly 18 to power the fluid production and/or injection piping assembly.
  • another umbilical 36 is connected to another terminal 72B to the surface assembly 11B, to power utilities on the surface assembly 11B or onshore.
  • fluid from the flowline 26 flows through the bypass 32 at an inlet temperature generally greater than 100°C and preferably comprised between 120°C and 150°C.
  • 100% of the working fluid evaporates in the evaporator 56.
  • the working fluid in gas phase is then introduced in the turbine 58 at a pressure advantageously greater than 5 bar and comprised generally between 10 bar and 15 bar to be expanded to a pressure advantageously smaller than 5 bar and generally comprised between 1.5 bar and 3.5 bar.
  • the expansion of the working fluid rotates the rotor of the turbine 58 about the rotation axis A-A' to generate electrical power in the generator 60.
  • the electrical power is transmitted to the transformer 62 to increase its tension in particular to transport it to the surface assembly 11B.
  • the whole electrical power of the utilities present in the fluid production and/or injection piping assembly 18 is provided by the generator 60, and if an excess power remains, it is transmitted to the surface assembly 11B via an umbilical 36.
  • the expanded gaseous working fluid is then passed through the condenser 66, where it heats exchanges with water from the body of water 12 to condense the working fluid.
  • the condensed working fluid is recovered in the drum 68, before being pumped by the pump to increase its pressure to a pressure advantageously greater than 5 bars. It is then directed to the preheater 54.
  • the dimensions of the equipment 52 contained in the organic Rankine cycle can be greatly increased, which allows a significant power recovery, for example greater than 500 kW up to several MW.
  • the underwater energy recovery system 20 remains nevertheless very compact, in particular due to the specific alignment of the rotation axis B-B' of the turbine 58, of the elongation axis A-A' of the evaporator 56/ preheater 54, and of the condenser axis C-C'.
  • the modular structure also allows an easy replacement or maintenance of one of the modules 80, 82, 84, without having to completely raise the underwater energy recovery system 20.
  • the system 20 is thus very efficient in heat recovery and transformation, yet very easy to install and maintain with laying vessels of smaller capacities and greater availability.
  • FIG. 5 An alternate modular underwater energy recovery system 20 is shown in figure 5 .
  • the recovery system of figure 5 differs from the system of figure 4 in that the condenser 66 is not held by the support module 80.
  • the condenser 66 is here borne by an additional condenser module 100.
  • the condenser module 100 is thus movable as one single unit, independently of the other modules 80, 82, 84.
  • the installation of the energy recovery system 20 shown in figure 5 only differs from the installation of the energy recovery system 20 shown in figure 4 in that the condenser module 100 is put in place independently of the other modules 80, 82, 84. It is laid in one piece on the support module 80, preferably with the condenser axis C-C' parallel to the rotation axis B-B' in an axial prolongation of the turbine 58.
  • Such a configuration allows the energy recovery system 20 to produce a greater electrical power, for example greater than 100 kW, in particular comprised between 500 kW and 10MW.
  • the weight of the support module 80 can then be more than 200 T, such as between 250 T and 1500 T. As such, a heavy lift vessel (HLV) has to be used to lay the support module 80.
  • the remaining modules 82, 84, 100 can still be laid with a MSV as described above.
  • the maximal dimension of the main module 80 can be greater than 15 m, and comprised between 18 m and 30 m.
  • the main module 80 may have a length comprised between 18 m and 30 m, a width comprised between 5 m and 20 m, and a height comprised between 5 m and 15 m.
  • the electrical module 82 may have a maximum dimension comprised between 5 m and 10 m. It may have a length comprised between 5 m and 10 m, a width comprised between 2 m and 8 m, and a height comprised between 1 m and 5 m.
  • the exchanger module 84 may have a maximum dimension comprised between 5 m and 15 m. It may have a length comprised between 5 m and 15 m, a width comprised between 0.5 m and 5 m, and a height comprised between 2 m and 5 m.
  • the condenser module 100 may have a maximum dimension comprised between 10 m and 20 m. It may comprise a length comprised between 10 m and 20 m, a width comprised between 2 m and 10 m, and a height comprised between 2 m and 8 m.
  • a heat exchange loop 102 comprising a heat exchange fluid thermally connects the manifold 28 to the preheater 54 and/or the evaporator 56 to transfer heat from the fluid contained in the manifold 28 to the preheater 54 and/or the evaporator 56.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP23305411.3A 2023-03-24 2023-03-24 Procédé d'installation d'un système de récupération d'énergie sous-marin dans une masse d'eau et installation de production de fluide associée Pending EP4435239A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23305411.3A EP4435239A1 (fr) 2023-03-24 2023-03-24 Procédé d'installation d'un système de récupération d'énergie sous-marin dans une masse d'eau et installation de production de fluide associée
PCT/EP2024/057829 WO2024200291A1 (fr) 2023-03-24 2024-03-22 Procédé d'installation d'un système de récupération d'énergie sous-marine dans un corps d'eau et installation de production de fluide associée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23305411.3A EP4435239A1 (fr) 2023-03-24 2023-03-24 Procédé d'installation d'un système de récupération d'énergie sous-marin dans une masse d'eau et installation de production de fluide associée

Publications (1)

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EP4435239A1 true EP4435239A1 (fr) 2024-09-25

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EP23305411.3A Pending EP4435239A1 (fr) 2023-03-24 2023-03-24 Procédé d'installation d'un système de récupération d'énergie sous-marin dans une masse d'eau et installation de production de fluide associée

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EP (1) EP4435239A1 (fr)
WO (1) WO2024200291A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738872A1 (fr) 1995-09-19 1997-03-21 Bertin & Cie Dispositif de production d'energie pour l'alimentation electrique des equipements d'une tete de puits sous-marine
US20110138809A1 (en) * 2007-12-21 2011-06-16 United Technologies Corporation Operating a sub-sea organic rankine cycle (orc) system using individual pressure vessels
DE102014113559A1 (de) * 2014-09-19 2016-03-24 Urs Keller Kraftwerksanordnung mit einem Thermalwasseraustritt am Meeresboden und Arbeitsverfahren dafür
DE102015205284A1 (de) * 2015-03-24 2016-09-29 Robert Bosch Gmbh Unterwasseranlage zur Erzeugung elektrischer Energie aus Wärme

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738872A1 (fr) 1995-09-19 1997-03-21 Bertin & Cie Dispositif de production d'energie pour l'alimentation electrique des equipements d'une tete de puits sous-marine
US20110138809A1 (en) * 2007-12-21 2011-06-16 United Technologies Corporation Operating a sub-sea organic rankine cycle (orc) system using individual pressure vessels
DE102014113559A1 (de) * 2014-09-19 2016-03-24 Urs Keller Kraftwerksanordnung mit einem Thermalwasseraustritt am Meeresboden und Arbeitsverfahren dafür
DE102015205284A1 (de) * 2015-03-24 2016-09-29 Robert Bosch Gmbh Unterwasseranlage zur Erzeugung elektrischer Energie aus Wärme

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