EP3083451B1 - Procédé d'injection de fluides dans une installation sous-marine - Google Patents

Procédé d'injection de fluides dans une installation sous-marine Download PDF

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Publication number
EP3083451B1
EP3083451B1 EP14830844.8A EP14830844A EP3083451B1 EP 3083451 B1 EP3083451 B1 EP 3083451B1 EP 14830844 A EP14830844 A EP 14830844A EP 3083451 B1 EP3083451 B1 EP 3083451B1
Authority
EP
European Patent Office
Prior art keywords
fluid
storage
vessel
storage tank
storage system
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.)
Active
Application number
EP14830844.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3083451A1 (fr
Inventor
Luc Riviere
Vincent Peyrony
Gabriel BEAUDONNET
William Hudson
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 SE
Original Assignee
Total SE
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Publication of EP3083451A1 publication Critical patent/EP3083451A1/fr
Application granted granted Critical
Publication of EP3083451B1 publication Critical patent/EP3083451B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/78—Large containers for use in or under water
    • 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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances

Definitions

  • the invention relates to techniques for storing and injecting utility fluids in subsea installations.
  • umbilical ducts are subject to the environmental constraints of the seabed, for example thermal stresses and pressure constraints, calling for regular monitoring.
  • the umbilical ducts must also be connected to the installation, and require the presence of a platform or a ship on the surface to ensure the injection and reception of fluids.
  • the storage on a ship of chemicals such as methanol, demulsifiers, biocides or products preventing corrosion or the formation of deposits in the ducts of the installation, presents a significant environmental risk.
  • This method has the particular advantage of not requiring umbilical conduit and platform or ship surface to inject a utility fluid.
  • This utility fluid is stored near the plant in a rigid-walled tank maintained at the bottom of the water for the duration of the fluid injection.
  • the method is particularly advantageous for the operation of installations having many satellite fields, in which the lengths of umbilical ducts necessary for connecting the different wellheads can reach several tens of km, considerably increasing the operating costs.
  • the method also maintains a fluid storage tank for a period of several months at the bottom of the water, the fluid storage system comprising rigid walled tanks, better resistant to seabed stresses and compatibility constraints. chemical with utilitarian fluids as elastomer bins.
  • the invention may also include a plurality of fluid storage bins containing the same utility fluid.
  • the use of at least two storage bins containing the same utility fluid, namely a first bin and a second bin, allows continuous operation of the installation. Indeed, by injecting the fluid utility of only one fluid storage tank at a time, when the utilitarian fluid of the first tank is exhausted, the additional tray can be a reserve of utility fluid ensuring the continuous injection of fluid in the installation while the first bin is refilled.
  • the descent and the ascent of the storage system can advantageously be carried out by means of a crane or any other lifting device from a platform or a ship located on the surface.
  • the storage tank may comprise a movable piston partition separating the utility fluid from the marine environment, and the injection of the utility fluid may comprise a translation of the partition.
  • the storage system comprises a pump connected to the storage tank by a first duct and to said subsea installation by a second duct, and the injection of the utility fluid may comprise the operation of the pump.
  • the use of a pump to cause the displacement of the moving partition of the storage tank can overcome a mechanical actuator exerting pressure on the movable partition of the fluid storage tank.
  • the pump causes displacement of the movable partition and the circulation of the utility fluid by creating a pressure difference between the marine environment and the utility fluid.
  • the injection of the utility fluid can take place over a period of between one month and one year before the surface rise of said portion of the storage system.
  • the injection of utility fluid can be carried out continuously at a rate of a few tens of liters per hour, for chemicals such as, for example demulsifiers, corrosion inhibitors, hydrate formation inhibitors, inhibitors of deposits.
  • chemicals such as, for example demulsifiers, corrosion inhibitors, hydrate formation inhibitors, inhibitors of deposits.
  • some other products may not be injected continuous, such as biocides that can be injected sporadically at, for example, about two hundred liters per hour, five hours per week.
  • a system for measuring the utility fluid contained in the storage bin may be included.
  • the fluid storage system may comprise at least one refueling umbilical connected to the storage tank on the one hand, and a surface utility fluid reservoir on the other hand, the refueling umbilical carrying out a filling of the storage bin.
  • This embodiment makes it possible to maintain permanent control over the quantity of utility fluid contained in the storage bin.
  • a filling of the storage tank from the surface keeps the latter longer for the bottom of the water, and up to the surface only for maintenance operations.
  • a method for injecting fluid into an underwater installation comprises a first step, consisting in lowering a system for storing and injecting fluid at the bottom of the water.
  • the storage and injection system comprises at least one storage tank filled initially with a utility fluid.
  • This fluid storage tank is connected via a conduit to an installation.
  • this installation consists of a hydrocarbon exploitation well head.
  • other facilities can benefit from the invention presented here.
  • the figure 1 represents an example of a submarine storage system near a deep-water hydrocarbon production well.
  • a well head 100 located at the bottom of the water is supplied by conduits 6 of utility fluid from a fluid storage and injection system 1.
  • This fluid storage and injection system 1 comprises, among other things, storage tanks. storage 21.
  • the hydrocarbons extracted can typically be conveyed to the surface from the wellhead 100 via a conduit 106.
  • a final step is to go up to the surface of the storage system or a part thereof comprising at least the fluid storage tank.
  • the fluid storage and injection system 1 comprises several modules 11.
  • modules 11 may differ from that represented on the figure 2 , especially with a view to bringing the pumps 5 closer to the fluid storage tanks 21-24, or to adapt to the configuration of the seabed near the installation 100. It is also possible for a module 11 to contain only a single pump 5.
  • module 11 is shown at figure 3 , representing a storage tank 21 provided with a connecting element 70 to a conduit.
  • the module 11 comprises attachment means 14 to a lifting device.
  • These attachment means 14 may for example be in the form of openings made in a metal frame, intended to receive a hook, a carabiner or other attachment system, for example the cable of a crane or a winch.
  • the storage and injection system 1 comprises at least two fluid storage tanks for the same type of utility fluid 30, so as to be able to replace an empty storage tank without having to interrupt the injection of said fluid into the storage tank. 100 installation.
  • First conduits 7 connecting the fluid storage tanks 21-24 to the pumps 5 are provided.
  • the connection of these first conduits 7 is carried out by well-known techniques, and may for example involve a remote-controlled robot.
  • Second ducts 6 are provided for connecting the pumps 5 to the subsea installation 100.
  • the lengths of the first 7 and second 6 ducts are reduced so as to reduce the risk of damage to these ducts 6, 7. and 7 can be either rigid type or flexible type.
  • a module 11 containing two pumps 5 comprises a manifold 260 provided on an armature of the storage system 1.
  • the second duct 6 extends from the manifold 260 to the underwater installation 100.
  • the connection between the pump 5 and the manifold 260 is effected by means of an intermediate duct 60.
  • This intermediate duct 60 can be either rigid type or flexible type.
  • the storage system 1 makes it possible to reduce the direct interaction with the elements of the subsea installation 100.
  • the use of an intermediate duct 60 coupled to a collector 260 makes it possible to go up to the surface for maintenance a pump 5 defective without having to disconnect the second conduit 6 of the installation 100.
  • a ferry 8 connected to the second conduit 6 on the one hand, and a third conduit 16 on the other hand, of smaller section, connecting the accumulation tank 8 to the installation 100.
  • a valve 9, for example a solenoid valve is placed on the third conduit 16.
  • the valve 9 being closed, the pump 5 is used initially to fill the accumulation tank 8.
  • This accumulation tank 8 is able to withstand a high external pressure, for example a pressure exceeding 100 thousand hPa. Then, the control of the flow of utility fluid 30 injected into the installation 100 is carried out by controlling the opening of the valve 9.
  • a first possibility is to raise the empty fluid storage tank 21-24 to the surface using a crane or other lifting device provided on a platform or a ship.
  • the attachment means 14 are arranged on the four corners of a removable module of the system 1 as shown in FIGS. Figures 2 and 3 .
  • Such a means for filling a fluid storage tank without reassembly can be advantageous when the storage tank in question is present in a single copy in the storage system 1. It can also have the advantage not to require a disconnection of the first conduits 7.
  • a third possibility is to deploy, from a supply ship, a supply umbilical connecting to the receptacle 211.
  • the supply of product is then carried out by directly transferring the product from the refueling vessel to the fluid storage tank 21-24 at least partially empty via the supply umbilical.
  • This method allows the transfer of large volumes of products.
  • the supply umbilical has either a line dedicated to each product, or a single line common to all products. In the latter case, this line can be emptied and cleaned between the refueling of each product.
  • the figure 4 represents an example of a fluid storage tank 20 containing a utility fluid 30.
  • the fluid storage tank 20 has an upper surface 202 having orifices 203. This upper surface 202 allows the marine medium 3 to enter the storage tank 20 to a movable partition 40.
  • the presence of such a surface perforated 202 secured to the fluid storage tank 20 allows in particular to facilitate handling by limiting the movement of the movable partition 40, and facilitates the installation of a sensor 204 for measuring the volume of utility fluid 30 present in the fluid storage bin 20.
  • the sensor 204 may advantageously be a sonar-type device, measuring the position of the moving partition 40 in the fluid storage tank 20, thus making it possible to deduce the volume of the remaining utility fluid 30.
  • the movable partition 40 advantageously has a height sufficient to ensure a translation without risk of inclination of the partition 40 in the storage bin 20. For example, a height of fifty centimeters meets this criterion.
  • the height of the movable partition 40 may be smaller. For example, when the storage bin has a cylindrical shape, the movable partition 40 is less likely to be arched by sliding in the tray. A height of less than forty centimeters for the movable partition 40 can then be provided.
  • the partition 40 comprises at least one guide system 41.
  • These guide systems 41 have a shape that matches that of the cross section of the fluid storage tank 20.
  • the guiding system 41 shown is a seal, in contact with the wall of the storage tank 20.
  • the guiding system 41 makes it possible to promote a rectilinear movement of the partition 40 in the storage bin 20.
  • the movable partition 40 comprises at least one seal 42, a material compatible with the nature of the utility fluid 30 stored in the tray 20. This seal can act as a guide system.
  • This seal 42 prevents the utility fluid 30 from mixing with the marine environment 3 despite the displacement of the partition 40. It thus seals the storage tank 20, and effectively separates the marine medium 3 from the commercial fluid 30 .
  • the fluid storage tank 20 comprises, in its lower part, an opening and a connecting element 70.
  • the connector 70 is intended to be connected to a duct 71.
  • the figure 5 schematically represents a front view of an exemplary embodiment of the fluid storage and injection system 1, including a module 11 including a rigid frame provided with attachment means 14 to a lifting device for lifting at least a portion of the system 1.
  • the system comprises two rows of fluid storage tanks 20, the latter being each provided with fastening means 201 between them and the frame of the storage system 1.
  • the module 11 of the figure 4 includes two removable storage bins.
  • the armature of the module 11 is configured to facilitate the insertion of the fluid storage tanks 20 on the storage system 1 and to ensure the stability of the storage bins 20 in the module 11.
  • the module 11 comprises on its armature the conduits 71, required for fluid transfers, connected to a distributor 710.
  • This distributor 710 makes it possible to switch between the injection of the utility fluid 30 from a refueling tank 270 through the receptacle 211, and the injection of the utility fluid 30 from a storage tank 20 to the installation 100.
  • the storage system 1 may include only one fluid storage bin 20 for a given type of utility fluid.
  • the armature 11 can also be an integral part of such a fluid storage tank 20.
  • the storage tanks can be maintained at the bottom of the water in the event of interruption of the exploitation of a deposit, to then be reused quickly during a resumption of operation.
  • the shape of the fluid storage tanks may not be cylindrical, in particular with a view to optimizing the storage of the bins, to optimize the use of space within a module 11 and to facilitate the installation of the bins. storage at the bottom of the water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Cleaning In General (AREA)
EP14830844.8A 2013-12-19 2014-12-19 Procédé d'injection de fluides dans une installation sous-marine Active EP3083451B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1363131A FR3015446B1 (fr) 2013-12-19 2013-12-19 Procede d'injection de fluides dans une installation sous-marine
PCT/FR2014/053473 WO2015092331A1 (fr) 2013-12-19 2014-12-19 Procédé d'injection de fluides dans une installation sous-marine

Publications (2)

Publication Number Publication Date
EP3083451A1 EP3083451A1 (fr) 2016-10-26
EP3083451B1 true EP3083451B1 (fr) 2018-06-06

Family

ID=50729559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14830844.8A Active EP3083451B1 (fr) 2013-12-19 2014-12-19 Procédé d'injection de fluides dans une installation sous-marine

Country Status (7)

Country Link
EP (1) EP3083451B1 (es)
AR (1) AR099370A1 (es)
AU (1) AU2014369554B2 (es)
DK (1) DK3083451T3 (es)
FR (1) FR3015446B1 (es)
UY (1) UY35897A (es)
WO (1) WO2015092331A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9915129B2 (en) * 2016-03-30 2018-03-13 Oceaneering International, Inc. Dual method subsea chemical delivery and pressure boosting

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB900232A (en) * 1957-12-11 1962-07-04 Sven Arild Swallert Container for liquids of lower specific gravity than water, to be stored under water
DE2538419A1 (de) 1975-08-29 1977-03-10 Phoenix Gummiwerke Ag Behaelter zur lagerung von erdoel
FR2776274A1 (fr) 1998-03-17 1999-09-24 Emmanuel Schiffmann Dispositif pour le stockage sous-marin des effluents d'un gisement petrolier sous-marin
GB2482470A (en) * 2010-06-17 2012-02-08 Dominic Michaelis Underwater oil storage system
WO2012051168A2 (en) * 2010-10-12 2012-04-19 Bp Corporation North America Inc. Subsea autonomous dispersant injection system and methods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
AU2014369554A1 (en) 2016-07-07
AU2014369554B2 (en) 2018-10-25
AR099370A1 (es) 2016-07-20
DK3083451T3 (en) 2018-09-03
FR3015446A1 (fr) 2015-06-26
FR3015446B1 (fr) 2016-01-22
EP3083451A1 (fr) 2016-10-26
WO2015092331A1 (fr) 2015-06-25
UY35897A (es) 2015-07-31

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