WO2009040442A1 - Method for enhancing recovery of a hydrocarbon fluid - Google Patents

Method for enhancing recovery of a hydrocarbon fluid Download PDF

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Publication number
WO2009040442A1
WO2009040442A1 PCT/EP2008/063033 EP2008063033W WO2009040442A1 WO 2009040442 A1 WO2009040442 A1 WO 2009040442A1 EP 2008063033 W EP2008063033 W EP 2008063033W WO 2009040442 A1 WO2009040442 A1 WO 2009040442A1
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WO
WIPO (PCT)
Prior art keywords
monotower
windmill
water
formation
injected
Prior art date
Application number
PCT/EP2008/063033
Other languages
French (fr)
Inventor
Jorgen Hakestad Dale
Original Assignee
Shell Internationale Research Maatschappij B.V.
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 Shell Internationale Research Maatschappij B.V. filed Critical Shell Internationale Research Maatschappij B.V.
Publication of WO2009040442A1 publication Critical patent/WO2009040442A1/en

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Classifications

    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/28—Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/221—Rotors for wind turbines with horizontal axis
    • F05B2240/2213—Rotors for wind turbines with horizontal axis and with the rotor downwind from the yaw pivot axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/917—Mounting on supporting structures or systems on a stationary structure attached to cables
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • F05B2260/406—Transmission of power through hydraulic systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/727—Offshore wind turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Definitions

  • the invention relates to a method for enhancing recovery of a hydrocarbon fluid from a subsea hydrocarbon containing formation by injecting heat and/or fluid into the formation.
  • Production of crude oil is often enhanced by injecting a fluid, heat and/or a heated fluid into the crude oil containing formation so as to push the crude oil towards one or more production wells and/or to decrease its viscosity and thereby enhance its mobility.
  • the injected fluid may be water, steam, methane, carbon dioxide and/or other fluids that may be miscible or immiscible with the crude oil. In some formations it is beneficial to inject a large flux of water, steam and/or other fluids to enhance crude oil production.
  • gas turbines that are mounted at offshore production platforms. These gas turbines may be heavy, bulky consume significant amounts of fuel gas and emit a significant amount of flue gases that contain carbon dioxide (CO2) and NO x .
  • This paper discloses the use of a windmill on top of a moored flotation caisson in which water injection pumps may be arranged.
  • the paper indicates on page 160 that a disadvantage of this arrangement is that it is necessary to include relatively large and high pressure flexibles with the catenary umbilical, which generates greater pressure losses due to friction and pressure head with depth, so that this will only work for topping up the injection water requirement and that it cannot be used for re-injection of produced water.
  • the paper indicates that the power generated by the windmill is not sufficient to provide power to water injection pumps that inject water into the subsea reservoir, and that the windmill can only be used to top up the water requirement.
  • Summary of the Invention In accordance with the invention there is provided a method for enhancing recovery of a hydrocarbon fluid from a subsea hydrocarbon containing formation, wherein water is injected into the formation by a water injection pump which is powered by at least one offshore windmill, and the water injection pump injects raw seawater and a water treatment chemical into the hydrocarbon containing formation such that production of hydrocarbon fluid from the formation is enhanced.
  • the offshore windmill may be supported by a monotower, which is anchored to the seabottom or be mounted on a floating structure.
  • the monotower comprises a universal joint, which is located near the water bottom, and the monotower and windmill have a lower density than the surrounding seawater such that the monotower is maintained in an upright position by buoyancy forces.
  • the universal joint may be provided by a flexible tension leg, which is anchored to the seabottom and the flexible tension leg is connected to the tension leg by a swivel and the windmill propeller blades may be arranged downwind of the monotower, thereby allowing the monotower and propeller blades to weathervane .
  • Suitable windmills with flexible tension legs are disclosed in US patent 7,156,037 and in European patents EP 1738073 and EP 1618301.
  • the monotower may supported by a large diameter foundation pile, which is hammered into the seabottom and to which the monotower is secured by injecting grout into an annular space between a lower section of the monotower and an upper section of the pile .
  • the windmill may be connected to the water injection pump by a mechanical, hydraulic and/or pneumatic power transmission system.
  • the monotower or other windmill support structure may be provided with storage means for water treatment Chemicals, such as nitrates, biocides and/or scale inhibitors, from which water treatment chemicals are injected into the flux of raw seawater that is injected into the formation.
  • FIG.l shows three offshore windmills that are each anchored to the seabed by a flexible tension leg and which inject seawater into three subsea water injection wells .
  • FIG.l depicts three windmills 1,11 and 21, which float in the sea 5 and are each anchored to the seabed 6 by a flexible tension leg 2,12 and 22. Each windmill is connected to a subsea pump 3,13,23, which pumps seawater via a subsea water injection well 4,14,24 into a subsea hydrocarbon containing formation (not shown).
  • Each windmill 1,11,21 comprises a monotower 7,17 and 27 which is connected to the tension leg 2,12,22 by a swivel 8,18,28, which permits the monotower and associated propeller blades 9,19,29 to sway around a substantially vertical axis such that the propellers are each located in a plane which is substantially orthogonal to the wind direction 10.
  • the propeller blades 9,19,29 are placed downwind of the monotowers 7,17,27 thereby permitting the entire towers 7,17 and 27 to weathervane as a result of the wind pressure acting on the propeller blades 9,19,29.
  • the depicted monotowers 7,17,27 that are anchored to the seabed by a single tension leg 2,12,21 can be configured for installation in waterdepths from 90 meters up to more than 1000 meters.
  • the monotower 7,17,27 may extend between 100 and 150 meters above the sealevel and the propeller blades 9,19,29 may each have a length between 40 and 70 meters. In such case each windmill 1,11,21 may generate several MW, depending on the windforce 10.
  • the monotowers 7,17,27 may be provided with support ribs and cables 7A, 17A, 27A, which permit the monotowers to be slender and inhibit bending and/or vibration of the slender monotowers 7,17,27.
  • the pump and filter assemblies 3,13 and 23 may be installed in a retrievable manner at the seabed 6 and may be powered by a hydraulic, pneumatic or mechanical power transmission system, thereby eliminating the need for heavy and wear prone electrical motors, generators, cables and connectors, which need to be sealed to prevent contact with water.
  • Water treatment chemicals such as scale inhibitors, biocides and/or nitrate, may be stored in the monotowers 7,17,27 and/or in subsea treatment chemical storage tanks (not shown) .
  • several windmills 1,11,21 may be connected to a single subsea water injection pump (not shown) and in such case it may be desired to use an electrical power transmission system to transmit electrical power from electrical generators which are each connected via a gear box or directly to the shaft on which the propeller blades 9,19,29 are mounted to the subsea water injection pump.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Sustainable Energy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Wind Motors (AREA)
  • Earth Drilling (AREA)

Abstract

A method is provided for enhancing recovery of a hydrocarbon fluid from a subsea hydrocarbon containing formation, wherein water is injected into the formation by a water injection pump (3), which is powered by at least one offshore windmill (1,11,21), and which raw seawater and a water treatment chemical into the hydrocarbon containing formation.

Description

METHOD FOR ENHANCING RECOVERY OF A HYDROCARBON FLUID
Background of the Invention
The invention relates to a method for enhancing recovery of a hydrocarbon fluid from a subsea hydrocarbon containing formation by injecting heat and/or fluid into the formation.
Production of crude oil is often enhanced by injecting a fluid, heat and/or a heated fluid into the crude oil containing formation so as to push the crude oil towards one or more production wells and/or to decrease its viscosity and thereby enhance its mobility.
The injected fluid may be water, steam, methane, carbon dioxide and/or other fluids that may be miscible or immiscible with the crude oil. In some formations it is beneficial to inject a large flux of water, steam and/or other fluids to enhance crude oil production.
If fluid is injected into a subsea formation the energy required to pump the fluid into the formation and/or to provide heat is generally provided by gas turbines that are mounted at offshore production platforms. These gas turbines may be heavy, bulky consume significant amounts of fuel gas and emit a significant amount of flue gases that contain carbon dioxide (CO2) and NOx.
If seawater or steam is injected into the formation then the injected water generally has to be treated and/or purified to make it suitable for injection and the required filters, desalination equipment and/or treatment chemical injection and storage means may further consume significant amounts of deckspace at offshore platforms, thereby making the platforms heavier, in particular if they are located in deepwater, and increasing the capital and operating expenses of the crude oil production. The method according to the preamble of claim 1 is known from the paper " Remote Power Generation for Deepwater Offshore Facilities" presented by R.Thornton at the 2002 International conference for Subsea Controls And Data Acquisition (SCADA, XP 008088696, ISBN : 0-906940-41-9 ). This paper discloses the use of a windmill on top of a moored flotation caisson in which water injection pumps may be arranged. The paper indicates on page 160 that a disadvantage of this arrangement is that it is necessary to include relatively large and high pressure flexibles with the catenary umbilical, which generates greater pressure losses due to friction and pressure head with depth, so that this will only work for topping up the injection water requirement and that it cannot be used for re-injection of produced water.
Accordingly the paper indicates that the power generated by the windmill is not sufficient to provide power to water injection pumps that inject water into the subsea reservoir, and that the windmill can only be used to top up the water requirement.
It is an object of the present invention to provide a method for enhancing recovery of crude oil and/or another hydrocarbon fluid from a subsea hydrocarbon containing formation in an environment friendly manner and such that the use of bulky gas turbines and associated flue gas emissions is avoided. Summary of the Invention In accordance with the invention there is provided a method for enhancing recovery of a hydrocarbon fluid from a subsea hydrocarbon containing formation, wherein water is injected into the formation by a water injection pump which is powered by at least one offshore windmill, and the water injection pump injects raw seawater and a water treatment chemical into the hydrocarbon containing formation such that production of hydrocarbon fluid from the formation is enhanced.
The offshore windmill may be supported by a monotower, which is anchored to the seabottom or be mounted on a floating structure.
Preferably, the monotower comprises a universal joint, which is located near the water bottom, and the monotower and windmill have a lower density than the surrounding seawater such that the monotower is maintained in an upright position by buoyancy forces.
The universal joint may be provided by a flexible tension leg, which is anchored to the seabottom and the flexible tension leg is connected to the tension leg by a swivel and the windmill propeller blades may be arranged downwind of the monotower, thereby allowing the monotower and propeller blades to weathervane . Suitable windmills with flexible tension legs are disclosed in US patent 7,156,037 and in European patents EP 1738073 and EP 1618301.
Alternatively, in shallow water, the monotower may supported by a large diameter foundation pile, which is hammered into the seabottom and to which the monotower is secured by injecting grout into an annular space between a lower section of the monotower and an upper section of the pile .
The windmill may be connected to the water injection pump by a mechanical, hydraulic and/or pneumatic power transmission system.
The monotower or other windmill support structure may be provided with storage means for water treatment Chemicals, such as nitrates, biocides and/or scale inhibitors, from which water treatment chemicals are injected into the flux of raw seawater that is injected into the formation. These and other features, embodiments and advantages of the method according to the invention are described in the accompanying claims, abstract and the following detailed description of a preferred embodiment in which reference is made to the accompanying drawing. Brief Description of the Drawing
FIG.l shows three offshore windmills that are each anchored to the seabed by a flexible tension leg and which inject seawater into three subsea water injection wells . Detailed Description of a Preferred Embodiment
FIG.l depicts three windmills 1,11 and 21, which float in the sea 5 and are each anchored to the seabed 6 by a flexible tension leg 2,12 and 22. Each windmill is connected to a subsea pump 3,13,23, which pumps seawater via a subsea water injection well 4,14,24 into a subsea hydrocarbon containing formation (not shown).
Each windmill 1,11,21 comprises a monotower 7,17 and 27 which is connected to the tension leg 2,12,22 by a swivel 8,18,28, which permits the monotower and associated propeller blades 9,19,29 to sway around a substantially vertical axis such that the propellers are each located in a plane which is substantially orthogonal to the wind direction 10. Preferably the propeller blades 9,19,29 are placed downwind of the monotowers 7,17,27 thereby permitting the entire towers 7,17 and 27 to weathervane as a result of the wind pressure acting on the propeller blades 9,19,29. The depicted monotowers 7,17,27 that are anchored to the seabed by a single tension leg 2,12,21 can be configured for installation in waterdepths from 90 meters up to more than 1000 meters. The monotower 7,17,27 may extend between 100 and 150 meters above the sealevel and the propeller blades 9,19,29 may each have a length between 40 and 70 meters. In such case each windmill 1,11,21 may generate several MW, depending on the windforce 10. The monotowers 7,17,27 may be provided with support ribs and cables 7A, 17A, 27A, which permit the monotowers to be slender and inhibit bending and/or vibration of the slender monotowers 7,17,27.
The pump and filter assemblies 3,13 and 23 may be installed in a retrievable manner at the seabed 6 and may be powered by a hydraulic, pneumatic or mechanical power transmission system, thereby eliminating the need for heavy and wear prone electrical motors, generators, cables and connectors, which need to be sealed to prevent contact with water.
Water treatment chemicals, such as scale inhibitors, biocides and/or nitrate, may be stored in the monotowers 7,17,27 and/or in subsea treatment chemical storage tanks (not shown) . If desired, several windmills 1,11,21 may be connected to a single subsea water injection pump (not shown) and in such case it may be desired to use an electrical power transmission system to transmit electrical power from electrical generators which are each connected via a gear box or directly to the shaft on which the propeller blades 9,19,29 are mounted to the subsea water injection pump.

Claims

C L A I M S
1. A method for enhancing recovery of a hydrocarbon fluid from a subsea hydrocarbon containing formation, wherein water is injected into the formation by a water injection pump, characterized in that at least a substantial part of the power for actuating the pump is provided by at least one offshore windmill and that the pump injects raw seawater and a water treatment chemical into the hydrocarbon containing formation.
2. The method of claim 1, wherein the offshore windmill is supported by a monotower, which is anchored to the seabottom.
3. The method of claim 2, wherein the monotower is provided with storage means for a number of water treatment chemicals from which one or more water treatment chemicals are injected into the flux of raw seawater that is injected into the formation.
4. The method of claim 3, wherein the water treatment chemicals comprise chemicals selected from the group of nitrates, biocides and scale inhibitors.
5. The method of claim 1, wherein the offshore windmill is mounted on a floating structure.
6. The method of claim 2 and 5, wherein the monotower comprises an universal joint, which is located near the water bottom, and the monotower and windmill have a lower density than the surrounding seawater such that the monotower is maintained in an upright position by buoyancy forces.
7. The method of claim 6, wherein the universal joint is provided by a flexible tension leg, which is anchored to the seabottom and the flexible tension leg is connected to the tension leg by a swivel.
8. The method of claim 7, wherein the windmill propeller blades are arranged downwind of the monotower, thereby allowing the monotower and propeller blades to weathervane .
9. The method of claim 2, wherein the monotower is supported by a large diameter foundation pile, which is hammered into the seabottom and to which the monotower is secured by injecting grout into an annular space between a lower section of the monotower and an upper section of the pile.
10. The method of claim 5, wherein the floating structure is anchored to the seabed by one or more anchoring cables and/or one or more substantially vertical tensioning legs.
11. The method of claim 1, wherein the windmill is connected to the water injection pump by a mechanical, hydraulic and/or pneumatic power transmission system.
PCT/EP2008/063033 2007-09-28 2008-09-29 Method for enhancing recovery of a hydrocarbon fluid WO2009040442A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07117479.1 2007-09-28
EP07117479 2007-09-28

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
EP2655793B1 (en) 2010-12-21 2018-12-05 Seabox As Technical system, method and uses for dosing of at least one liquid treatment means into injection water to an injection well
EP3831981A1 (en) * 2019-12-05 2021-06-09 Single Buoy Moorings Inc. Offshore production facility arrangement
WO2021158210A1 (en) * 2020-02-04 2021-08-12 Single Buoy Moorings Inc. Wind powered offshore water production facility and method for manufacturing such a facility
WO2021158209A1 (en) * 2020-02-04 2021-08-12 Sbm-Imodco, Inc. Wind powered offshore water production facility and method for manufacturing such a facility
WO2022149982A1 (en) * 2021-01-07 2022-07-14 Norocean As Arrangement for securing a floating wind turbine in a seabed, and use of a subsea well portion for securing the floating wind turbine in the seabed
US20230203920A1 (en) * 2020-07-01 2023-06-29 Saipem S.P.A. Offshore assembly and oil and gas production system and method comprising such offshore assembly

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2655793B1 (en) 2010-12-21 2018-12-05 Seabox As Technical system, method and uses for dosing of at least one liquid treatment means into injection water to an injection well
EP3831981A1 (en) * 2019-12-05 2021-06-09 Single Buoy Moorings Inc. Offshore production facility arrangement
WO2021110900A1 (en) * 2019-12-05 2021-06-10 Single Buoy Moorings Inc. Offshore production facility arrangement
WO2021158210A1 (en) * 2020-02-04 2021-08-12 Single Buoy Moorings Inc. Wind powered offshore water production facility and method for manufacturing such a facility
WO2021158209A1 (en) * 2020-02-04 2021-08-12 Sbm-Imodco, Inc. Wind powered offshore water production facility and method for manufacturing such a facility
US20230203920A1 (en) * 2020-07-01 2023-06-29 Saipem S.P.A. Offshore assembly and oil and gas production system and method comprising such offshore assembly
US11988075B2 (en) * 2020-07-01 2024-05-21 Saipem S.P.A. Offshore assembly and oil and gas production system and method comprising such offshore assembly
WO2022149982A1 (en) * 2021-01-07 2022-07-14 Norocean As Arrangement for securing a floating wind turbine in a seabed, and use of a subsea well portion for securing the floating wind turbine in the seabed

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