WO2007030017A1 - Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof - Google Patents

Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof Download PDF

Info

Publication number
WO2007030017A1
WO2007030017A1 PCT/NO2006/000273 NO2006000273W WO2007030017A1 WO 2007030017 A1 WO2007030017 A1 WO 2007030017A1 NO 2006000273 W NO2006000273 W NO 2006000273W WO 2007030017 A1 WO2007030017 A1 WO 2007030017A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
chamber
pressure accumulator
accumulator
chambers
Prior art date
Application number
PCT/NO2006/000273
Other languages
French (fr)
Inventor
Tom Kjetil Askeland
Original Assignee
Siem Wis As
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 Siem Wis As filed Critical Siem Wis As
Priority to EP06769443A priority Critical patent/EP1917444B1/en
Priority to CA2615679A priority patent/CA2615679C/en
Priority to BRPI0613629-0A priority patent/BRPI0613629B1/en
Priority to AU2006288011A priority patent/AU2006288011B2/en
Priority to DK06769443.0T priority patent/DK1917444T3/en
Priority to US11/989,045 priority patent/US8474253B2/en
Priority to EA200800318A priority patent/EA010819B1/en
Publication of WO2007030017A1 publication Critical patent/WO2007030017A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3152—Accumulator separating means having flexible separating means the flexible separating means being bladders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/32—Accumulator separating means having multiple separating means, e.g. with an auxiliary piston sliding within a main piston, multiple membranes or combinations thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/218—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pyrotechnical charges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • F15B2211/8752—Emergency operation mode, e.g. fail-safe operation mode

Definitions

  • Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof
  • the present invention relates to a pressure accumulator to establish the power necessary to drive and operate external underwater equipment, such as hydraulic and/or mechanical systems, comprising a main body with an inner, longitudinal, main chamber that is divided into at least three sub-chambers that are separated from each other with the help of mutual, intermediate pistons, where the first of said chambers is a compensating chamber, arranged to take up the same pressure as the surroundings, and the third of said chambers is a pressure chamber.
  • the invention concerns systems and methods which normally use an accumulator function to create the necessary energy to be able to drive mechanical or hydraulic systems or equipment, and can be used for systems that have a need for accumulated power to be able to operate, irrespectively of whether the equipment is placed on the ocean bottom, a platform, a vessel, an appliance or ashore.
  • the expression accumulator means a system that has a characteristic which makes it possible to store energy with the help of pumping gas or a liquid into a chamber or container, which, in advance or afterwards, is/becomes exposed to an opposite pressure with the help of a compressed gas, air or a spring function.
  • Such an accumulator function is hereafter denoted by the designation accumulator.
  • the invention will, in a simplified way, represent an accumulator function that can be initiated according to need.
  • the invention concerns both systems that use the accumulator function directly on the body that shall be activated, as well as systems that use the accumulator function indirectly via hydraulic or pneumatic systems.
  • the invention will be especially suited to systems with a need for an accumulator function that normally are loaded in advance at a surrounding pressure for thereafter to be moved to a different surrounding pressure.
  • Typical areas are temporary equipment for use on ocean bottom installations.
  • the invention will here be able to contribute to a considerable reduction in need for equipment and volume, something that can be of decisive importance at greater ocean depths.
  • the present invention has an aim to replace parts of a system's need for a pre-charged accumulator, by replacing this with a pressure generating unit that can be activated when needed through combining existing and new technology with new methods and systems.
  • the pressure accumulator according to the invention preferably comprises a gas generator, preferably a slow-burning explosive unit that is placed in a pressure compensated chamber.
  • the chamber is connected with the body or fluid that shall be exposed to energy, with the help of a piston or a membrane.
  • the main element of the invention, the gas generator can be initiated with the help of one, or more independent, firing detonators with associated systems.
  • the pressure accumulator according to the invention can be put together in a collectable storage to represent both the energy need and redundancy, and also offer possibilities to bring a used system from the store, to replace this with an unused unit, while the main system that has a need for energy is operating.
  • driving the store can preferably be carried out by an ROV.
  • the pressure chamber and compensating chamber can be fitted with valves that make bleeding of enclosed pressure possible in a safe way when the chamber has been used or has been subjected to higher surrounding pressure than when put together.
  • This invention encompasses a pressure compensated chamber for a gas generator, initiation unit and a piston or bladder/membrane for the transfer of the forces.
  • the invention does not take into consideration how the forces that are generated are transferred and used, and as such cover any form of such methods.
  • a preferred embodiment of a pressure accumulator according to the invention is recognised by the characteristic in the independent claim 1, while preferred alternative embodiments are characterised by the independent claims 2-9.
  • a preferred application area is defined in the independent claim 10 with associated dependent claim 11.
  • a pressure accumulator according to the invention are that it can be without energy until initiated and it can be initiated according to need.
  • the invention can, in principle, be used both on systems/equipment on land, offshore, in space, as well as on ocean bottom systems. It can be fitted in collectable stores that are coupled (electrically and hydraulically), for example, on the ocean bottom with the help of a ROV. It can be connected in parallel to obtain the desired effect and/or redundancy. It can be fitted directly on equipment (for example a valve actuator) that has a need for energy. Excess pressure can be depressurised in a safe way in a workshop/on deck, and the equipment/invention can be reused after being made ready.
  • the pressure accumulator can be equipped with all firing mechanisms that are normally commercially available, or with specially designed solutions.
  • it can be equipped with a detonator/initiator that is of the so called safe type, i.e. there is no need, for example, for radio silence or other system closures, or it can be fitted with redundant initiator/detonator systems, preferably of a different make, or from different production batches.
  • It can be initiated either with the help of direct electric or hydraulic signals, or with the help of indirect firing methods such as acoustics and electro-magnetism, and it can be fitted with all gas generators (slow burning powder charge) that are normally available commercially, or with specially designed solutions.
  • Figure 1 shows an embodiment of a pressure accumulator according to the invention.
  • Figure 2 shows an alternative preferred embodiment of a pressure accumulator according to the invention.
  • Figure 3 shows a pressure accumulator as shown in figure 1 at atmospheric pressure.
  • Figure 4 shows a pressure accumulator as shown in figure 1 at a surrounding pressure that is higher that atmospheric pressure.
  • Figure 5 shows a pressure accumulator as shown in figure 4 which is initiated.
  • Figure 6 shows the function of a pressure accumulator shown in figure 5.
  • Figure 7 shows a pressure accumulator as shown in figure 2, where the build up of pressure has taken place.
  • Figure 8 shows the function of a pressure accumulator as shown in figure 7, at a surrounding pressure that is higher than atmospheric pressure.
  • a preferred embodiment of a pressure accumulator 10 to establish the power necessary to drive and operate external equipment, such as hydraulic and/or mechanical systems, comprises a main body 12 with an inner, longitudinal, main chamber 14 that is divided into several sub-chambers.
  • the inner, main chamber 14 stretches preferably along the whole of the length of the main body and comprises a plurality, at least three, sub- chambers 14a, 14b, 14c, that are separated from each other with the help of mutual, intermediate pistons 16,18.
  • the first of said chambers is a compensating chamber 14a arranged to take up the same pressure as the surroundings
  • the second of said chambers is a gas expansion chamber 14b comprising a gas generator 20 with an initiator/detonator 22
  • the third of said chambers is a pressure chamber 14c set up to be pressurised with the help of the gas expansion chamber 14b and to exert a force on the external equipment.
  • Figure 1 shows a typical construction of the invention when it is used to generate pressure against the pressure chamber 14c.
  • a gas generator 20 is arranged with associated initiator/detonator 22 between two pistons 16,18 inside the sleeve-formed main body 12.
  • the inner, main chamber 14 is, as shown in the figure, preferably divided into three chambers with the help of said pistons 16,18.
  • the compensating chamber 14a is separated from the gas expansion chamber 14b with the help of a compensating piston 16.
  • the gas expansion chamber 14b is in turn separated from the pressure chamber 14c with the help of the pressure piston 18.
  • the pistons 16, 18 represent a movable pressure barrier between the chambers.
  • valves 26,28 are set up to be able to bleed pressure from the compensating chamber and/or the gas expansion chamber 14a and 14b, respectively.
  • a non-return valve 24 is arranged that prevents pressure from the chamber being released again.
  • the pressure chamber 14c contains a medium in the form of, for example, liquid or gas, which shall be pressurised.
  • the pressure chamber 14c comprises, at one end, an outlet 30 that is coupled to the system which shall make use of the pressure.
  • a bladder, membrane or the like can be arranged to said end or outlet opening for the transfer of pressure to the external equipment.
  • the gas generator 20 in the gas expansion chamber 14b can preferably be a slow- burning (deflating) explosive charge (slow burning powder charge).
  • the initiator 22 can be of several shapes and principles that are appropriate with the actual gas generator and function requirements (temperature and firing safety in particular).
  • An electric wire 34 can preferably be led into the initiator/detonator 22 from the outside via special pressure resistant penetrations with an electric conductor inside to be able to trigger the initiator/detonator and thereby the gas generator.
  • Figure 2 shows an alternative preferred embodiment that is built up after the same principle as mentioned in connection with figure 1, with the exception that the pressure that is generated in the gas expansion chamber 14c is transferred directly to a shaft 32 via the pressure piston 18.
  • a valve function 36 is arranged in the sleeve so that any liquid or gas shall be able to evacuate without creating a possible locking situation.
  • a bladder, membrane or the like can also be used here if desired for transfer of pressure to the external equipment.
  • FIG 3 shows an embodiment of the present invention as described for figure 1.
  • the pressure accumulator 10 has been made ready under atmospheric surroundings.
  • the compensating chamber 14a is now reduced to a minimum with an atmospheric pressure, and the counterpressure in the pressure chamber 14c also corresponds to the atmospheric pressure.
  • Figure 4 shows an embodiment of the present invention as described in figure 3.
  • the pressure accumulator 10 is here lowered to an ocean depth of 2000 meters.
  • the compensating chamber 14a has now been supplied the same pressure as the surroundings. This leads to the pressure accumulator 10 obtaining full effect from the pressure that shall be generated in the gas expansion chamber 14c without first having to overcome the surrounding pressure.
  • Figure 5 shows the pressure accumulator as described in figure 4, with the difference that the gas generator 20 is initiated with the help of the initiator/detonator 22 and that the build-up of pressure has taken place.
  • the pressure accumulator 10 is now pressurised and represents stored, available energy.
  • Figure 6 shows the pressure accumulator as described in figure 5, with the difference that it has a consumption of energy from the pressure chamber 14c, which in turn leads to a position change by the pressure piston 18, and a reduction of remaining energy in the pressure chamber 14c.
  • Figure 7 shows the pressure accumulator as described in figure 2, where the gas generator 20 is initiated with the help of the initiator/detonator 22 and the pressure build-up has taken place.
  • Figure 8 shows the pressure accumulator as described in figure 7 where the pressure build-up has exerted a large enough force onto the pressure piston 18 and the shaft 32 that this has changed position to an activated position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A pressure accumulator (10) to establish the necessary power to drive and operate external equipment is described, such as hydraulic and/or mechanical systems comprising a main body (12) with an inner, longitudinal, main chamber (14) that is divided into several sub-chambers. The inner, main chamber (14) comprises at least three sub-chambers (14a, 14b, 14c) that are separated from each other with the help of mutual, intermediate pistons (16,18), where the first of said chambers is a compensating chamber (14a) arranged to take up the same pressure as the surroundings, the second of said chambers is a gas expansion chamber (14b) encompassing a gas generator (20) with an initiator/detonator (22), and the third of said chambers is a pressure chamber (14c) arranged to be pressurised with the help of the gas expansion chamber (14b) and to exert a force on the external equipment.

Description

Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof
The present invention relates to a pressure accumulator to establish the power necessary to drive and operate external underwater equipment, such as hydraulic and/or mechanical systems, comprising a main body with an inner, longitudinal, main chamber that is divided into at least three sub-chambers that are separated from each other with the help of mutual, intermediate pistons, where the first of said chambers is a compensating chamber, arranged to take up the same pressure as the surroundings, and the third of said chambers is a pressure chamber.
The invention concerns systems and methods which normally use an accumulator function to create the necessary energy to be able to drive mechanical or hydraulic systems or equipment, and can be used for systems that have a need for accumulated power to be able to operate, irrespectively of whether the equipment is placed on the ocean bottom, a platform, a vessel, an appliance or ashore. The expression accumulator means a system that has a characteristic which makes it possible to store energy with the help of pumping gas or a liquid into a chamber or container, which, in advance or afterwards, is/becomes exposed to an opposite pressure with the help of a compressed gas, air or a spring function. Such an accumulator function is hereafter denoted by the designation accumulator.
The invention will, in a simplified way, represent an accumulator function that can be initiated according to need. The invention concerns both systems that use the accumulator function directly on the body that shall be activated, as well as systems that use the accumulator function indirectly via hydraulic or pneumatic systems.
The invention will be especially suited to systems with a need for an accumulator function that normally are loaded in advance at a surrounding pressure for thereafter to be moved to a different surrounding pressure. Typical areas are temporary equipment for use on ocean bottom installations. The invention will here be able to contribute to a considerable reduction in need for equipment and volume, something that can be of decisive importance at greater ocean depths.
Today's methods to provide accumulated energy in equipment that shall carry out temporary work on ocean bottom installations are, to a large extent, based on charging an accumulator in advance on the surface to create an available excess pressure in relation to the surroundings. This pressure excess is considerably reduced if the accumulator is lowered to a water-depth of, for example, 2000 meters, where the pressure reduction will be about 200 bar. The reduction in excess pressure is normally compensated for by increasing the accumulator volume, something that in turn is relatively demanding with respect to equipment and space.
A large part of the tasks for an accumulator when it is part of temporary systems to work on water carrying or hydrocarbon carrying ocean bottom installations is to support emergency systems which shall normally not be operated. This leads to a large part of the energy of the accumulator being emergency energy, which is not planned to be used.
From prior art, US 4,777,800, US 6,418,970, US 6,202,753 and EP 0078031, among others, shall be pointed out. The first mentioned document is regarded as the one lying closest in terms of techniques and deals with a pressure accumulator for use in connection with underwater equipment. The pressure accumulator is divided into three sub-chambers, and the pressure accumulator charges itself when being lowered down to the ocean bottom. A pressure accumulator for underwater use with an expansion chamber with a gas generator with a detonator is not known from said documents.
The present invention has an aim to replace parts of a system's need for a pre-charged accumulator, by replacing this with a pressure generating unit that can be activated when needed through combining existing and new technology with new methods and systems.
The pressure accumulator according to the invention preferably comprises a gas generator, preferably a slow-burning explosive unit that is placed in a pressure compensated chamber. The chamber is connected with the body or fluid that shall be exposed to energy, with the help of a piston or a membrane. The main element of the invention, the gas generator, can be initiated with the help of one, or more independent, firing detonators with associated systems.
Several independent gas generator elements with associated initiation systems can also be arranged within the frames of the same pressure compensated chambers to achieve the desired effect and/or redundancy.
The pressure accumulator according to the invention can be put together in a collectable storage to represent both the energy need and redundancy, and also offer possibilities to bring a used system from the store, to replace this with an unused unit, while the main system that has a need for energy is operating. For ocean bottom installations, driving the store can preferably be carried out by an ROV. Furthermore, the pressure chamber and compensating chamber can be fitted with valves that make bleeding of enclosed pressure possible in a safe way when the chamber has been used or has been subjected to higher surrounding pressure than when put together.
To initiate the gas generator via a detonator function, several alternative systems can be used, possibly in combination, to get this done. Both directly connected systems, as well as acoustic systems or other indirect systems can be used.
This invention encompasses a pressure compensated chamber for a gas generator, initiation unit and a piston or bladder/membrane for the transfer of the forces.
The invention does not take into consideration how the forces that are generated are transferred and used, and as such cover any form of such methods.
A preferred embodiment of a pressure accumulator according to the invention is recognised by the characteristic in the independent claim 1, while preferred alternative embodiments are characterised by the independent claims 2-9.
A preferred application area is defined in the independent claim 10 with associated dependent claim 11.
Advantages with a pressure accumulator according to the invention are that it can be without energy until initiated and it can be initiated according to need. The invention can, in principle, be used both on systems/equipment on land, offshore, in space, as well as on ocean bottom systems. It can be fitted in collectable stores that are coupled (electrically and hydraulically), for example, on the ocean bottom with the help of a ROV. It can be connected in parallel to obtain the desired effect and/or redundancy. It can be fitted directly on equipment (for example a valve actuator) that has a need for energy. Excess pressure can be depressurised in a safe way in a workshop/on deck, and the equipment/invention can be reused after being made ready.
Other advantages are that the pressure accumulator can be equipped with all firing mechanisms that are normally commercially available, or with specially designed solutions. For example, it can be equipped with a detonator/initiator that is of the so called safe type, i.e. there is no need, for example, for radio silence or other system closures, or it can be fitted with redundant initiator/detonator systems, preferably of a different make, or from different production batches. It can be initiated either with the help of direct electric or hydraulic signals, or with the help of indirect firing methods such as acoustics and electro-magnetism, and it can be fitted with all gas generators (slow burning powder charge) that are normally available commercially, or with specially designed solutions.
The invention shall now be described in more detail with reference to the enclosed figures, in which:
Figure 1 shows an embodiment of a pressure accumulator according to the invention.
Figure 2 shows an alternative preferred embodiment of a pressure accumulator according to the invention.
Figure 3 shows a pressure accumulator as shown in figure 1 at atmospheric pressure.
Figure 4 shows a pressure accumulator as shown in figure 1 at a surrounding pressure that is higher that atmospheric pressure.
Figure 5 shows a pressure accumulator as shown in figure 4 which is initiated.
Figure 6 shows the function of a pressure accumulator shown in figure 5.
Figure 7 shows a pressure accumulator as shown in figure 2, where the build up of pressure has taken place.
Figure 8 shows the function of a pressure accumulator as shown in figure 7, at a surrounding pressure that is higher than atmospheric pressure.
A preferred embodiment of a pressure accumulator 10 to establish the power necessary to drive and operate external equipment, such as hydraulic and/or mechanical systems, comprises a main body 12 with an inner, longitudinal, main chamber 14 that is divided into several sub-chambers. The inner, main chamber 14 stretches preferably along the whole of the length of the main body and comprises a plurality, at least three, sub- chambers 14a, 14b, 14c, that are separated from each other with the help of mutual, intermediate pistons 16,18. The first of said chambers is a compensating chamber 14a arranged to take up the same pressure as the surroundings, the second of said chambers is a gas expansion chamber 14b comprising a gas generator 20 with an initiator/detonator 22, and the third of said chambers is a pressure chamber 14c set up to be pressurised with the help of the gas expansion chamber 14b and to exert a force on the external equipment.
Figure 1 shows a typical construction of the invention when it is used to generate pressure against the pressure chamber 14c. As the figure shows, a gas generator 20 is arranged with associated initiator/detonator 22 between two pistons 16,18 inside the sleeve-formed main body 12. The inner, main chamber 14 is, as shown in the figure, preferably divided into three chambers with the help of said pistons 16,18. The compensating chamber 14a is separated from the gas expansion chamber 14b with the help of a compensating piston 16. The gas expansion chamber 14b is in turn separated from the pressure chamber 14c with the help of the pressure piston 18. The pistons 16, 18 represent a movable pressure barrier between the chambers.
Furthermore, valves 26,28 are set up to be able to bleed pressure from the compensating chamber and/or the gas expansion chamber 14a and 14b, respectively. In the compensating chamber 14a, a non-return valve 24 is arranged that prevents pressure from the chamber being released again. The pressure chamber 14c contains a medium in the form of, for example, liquid or gas, which shall be pressurised. The pressure chamber 14c comprises, at one end, an outlet 30 that is coupled to the system which shall make use of the pressure. A bladder, membrane or the like (not shown) can be arranged to said end or outlet opening for the transfer of pressure to the external equipment.
The gas generator 20 in the gas expansion chamber 14b can preferably be a slow- burning (deflating) explosive charge (slow burning powder charge). The initiator 22 can be of several shapes and principles that are appropriate with the actual gas generator and function requirements (temperature and firing safety in particular). An electric wire 34 can preferably be led into the initiator/detonator 22 from the outside via special pressure resistant penetrations with an electric conductor inside to be able to trigger the initiator/detonator and thereby the gas generator.
Figure 2 shows an alternative preferred embodiment that is built up after the same principle as mentioned in connection with figure 1, with the exception that the pressure that is generated in the gas expansion chamber 14c is transferred directly to a shaft 32 via the pressure piston 18. In this configuration, a valve function 36 is arranged in the sleeve so that any liquid or gas shall be able to evacuate without creating a possible locking situation. A bladder, membrane or the like can also be used here if desired for transfer of pressure to the external equipment.
Figure 3 shows an embodiment of the present invention as described for figure 1. The pressure accumulator 10 has been made ready under atmospheric surroundings. As can be seen in the drawing, the compensating chamber 14a is now reduced to a minimum with an atmospheric pressure, and the counterpressure in the pressure chamber 14c also corresponds to the atmospheric pressure. Figure 4 shows an embodiment of the present invention as described in figure 3. As an example, the pressure accumulator 10 is here lowered to an ocean depth of 2000 meters. As can be seen in the drawing, the compensating chamber 14a has now been supplied the same pressure as the surroundings. This leads to the pressure accumulator 10 obtaining full effect from the pressure that shall be generated in the gas expansion chamber 14c without first having to overcome the surrounding pressure.
Figure 5 shows the pressure accumulator as described in figure 4, with the difference that the gas generator 20 is initiated with the help of the initiator/detonator 22 and that the build-up of pressure has taken place. The pressure accumulator 10 is now pressurised and represents stored, available energy.
Figure 6 shows the pressure accumulator as described in figure 5, with the difference that it has a consumption of energy from the pressure chamber 14c, which in turn leads to a position change by the pressure piston 18, and a reduction of remaining energy in the pressure chamber 14c.
Figure 7 shows the pressure accumulator as described in figure 2, where the gas generator 20 is initiated with the help of the initiator/detonator 22 and the pressure build-up has taken place.
Figure 8 shows the pressure accumulator as described in figure 7 where the pressure build-up has exerted a large enough force onto the pressure piston 18 and the shaft 32 that this has changed position to an activated position.

Claims

CLAIMS.
1. Pressure accumulator (10) to establish the necessary power to drive and operate external underwater equipment, such as hydraulic and/or mechanical systems, comprising a main body (12) with an inner, longitudinal, main chamber (14) that is divided into at least three sub-chambers (14a, 14b, 14c) which are separated from each other with the help of mutual, intermediate pistons (16,18) where the first of said chambers is a compensating chamber (14a), arranged to take up the same pressure as the surroundings, and the third of said chambers is a pressure chamber (14c), characterised in that the second of said chambers is a gas expansion chamber (14b) comprising a gas generator (20) with an initiator and/or detonator (22), and that said pressure chamber (14c) is arranged to be pressurised with the help of the gas expansion chamber (14b) and to exert a force on the external system.
2. Pressure accumulator (10) according to claim 1, characterised in that one of said pistons is a compensating piston (16) arranged between the compensating chamber (14a) and the gas expansion chamber (14b), and that another of said pistons is a pressure piston (18) arranged between the gas expansion chamber (14b) and the pressure chamber (14c).
3. Pressure accumulator (10) according to claim 2, characterised in that a non-return valve function (24) to the surroundings is provided in the compensating chamber (14a), and that a bleed valve (26 and 28, respectively) is arranged to the compensating chamber (14a) and/or to the gas expansion chamber (14b).
4. Pressure accumulator (10) according to claims 2 or 3, characterised in that said gas expansion chamber (14b) comprises a slow-burning, explosive material as a gas generator.
5. Pressure accumulator (10) according to claims 2 or 3, characterised in that said gas expansion chamber (14b) comprises a chemical material as a gas generator.
6. Pressure accumulator (10) according to one or more of claims 2-5, characterised in that the pressure chamber (14c) comprises an outlet opening (30) arranged to release outlet pressure to influence the external equipment
7. Pressure accumulator (10) according to claim 6, characterised in that a bladder, membrane or the like is arranged adjoining said outlet opening (30) for transfer of pressure to the external equipment.
8. Pressure accumulator (10) according to claim 6, characterised in that said pressure piston (18) comprises a shaft (32) that extends out through the outlet opening (30) in the pressure chamber (14c), where the shaft (32), when the pressure in the pressure chamber (14c) is released, is set up to influence the external equipment.
9. Pressure accumulator (10) according to claim 8, characterised in that the pressure chamber (14c) comprises a valve function (36).
10. Use of a pressure accumulator (10) according to one or more of the claims 1-9, in which the pressure accumulator (10) is arranged to equipment that is used in connection with ocean bottom well systems, permanently or temporarily.
11. Use of a pressure accumulator (10) according to claim 10, in which the pressure accumulator (10) is part of temporary emergency systems that normally shall not be driven in connection with work on water carrying or hydrocarbon carrying ocean bottom installations, and that the pressure accumulator is initiated either with the help of direct electric or hydraulic signals, or with the help of indirect firing methods such as acoustics or electro-magnetism.
PCT/NO2006/000273 2005-07-18 2006-07-12 Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof WO2007030017A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP06769443A EP1917444B1 (en) 2005-07-18 2006-07-12 Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof
CA2615679A CA2615679C (en) 2005-07-18 2006-07-12 Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof
BRPI0613629-0A BRPI0613629B1 (en) 2005-07-18 2006-07-12 PRESSURE ACCUMULATOR TO ESTABLISH THE POWER NECESSARY TO OPERATE AND OPERATE EXTERNAL EQUIPMENT, AND ITS USE
AU2006288011A AU2006288011B2 (en) 2005-07-18 2006-07-12 Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof
DK06769443.0T DK1917444T3 (en) 2005-07-18 2006-07-12 Pressure accumulator to generate sufficient energy to control and operate external equipment and its use
US11/989,045 US8474253B2 (en) 2005-07-18 2006-07-12 Pressure accumulator to establish sufficient power to handle and operate external equipment and use thereof
EA200800318A EA010819B1 (en) 2005-07-18 2006-07-12 Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20053520A NO326166B1 (en) 2005-07-18 2005-07-18 Pressure accumulator to establish the necessary power to operate and operate external equipment, as well as the application thereof
NO20053520 2005-07-18

Publications (1)

Publication Number Publication Date
WO2007030017A1 true WO2007030017A1 (en) 2007-03-15

Family

ID=35295503

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2006/000273 WO2007030017A1 (en) 2005-07-18 2006-07-12 Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof

Country Status (9)

Country Link
US (1) US8474253B2 (en)
EP (1) EP1917444B1 (en)
AU (1) AU2006288011B2 (en)
BR (1) BRPI0613629B1 (en)
CA (1) CA2615679C (en)
DK (1) DK1917444T3 (en)
EA (1) EA010819B1 (en)
NO (1) NO326166B1 (en)
WO (1) WO2007030017A1 (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009035945A1 (en) * 2007-09-10 2009-03-19 Cameron International Corporation Pressure-compensated accumulator bottle
US8201628B2 (en) 2010-04-27 2012-06-19 Halliburton Energy Services, Inc. Wellbore pressure control with segregated fluid columns
US8281875B2 (en) 2008-12-19 2012-10-09 Halliburton Energy Services, Inc. Pressure and flow control in drilling operations
GB2490984A (en) * 2008-08-04 2012-11-21 Cameron Int Corp Subsea differential-area accumulator
US8739863B2 (en) 2010-11-20 2014-06-03 Halliburton Energy Services, Inc. Remote operation of a rotating control device bearing clamp
US8776894B2 (en) 2006-11-07 2014-07-15 Halliburton Energy Services, Inc. Offshore universal riser system
US8820405B2 (en) 2010-04-27 2014-09-02 Halliburton Energy Services, Inc. Segregating flowable materials in a well
US8833488B2 (en) 2011-04-08 2014-09-16 Halliburton Energy Services, Inc. Automatic standpipe pressure control in drilling
WO2015043117A1 (en) * 2013-09-27 2015-04-02 陈启星 Liquid-trap and filled-piston based liquid seal energy accumulator and hydraulic system thereof
US9080407B2 (en) 2011-05-09 2015-07-14 Halliburton Energy Services, Inc. Pressure and flow control in drilling operations
US9163473B2 (en) 2010-11-20 2015-10-20 Halliburton Energy Services, Inc. Remote operation of a rotating control device bearing clamp and safety latch
US9169700B2 (en) 2010-02-25 2015-10-27 Halliburton Energy Services, Inc. Pressure control device with remote orientation relative to a rig
US9222320B2 (en) 2010-12-29 2015-12-29 Halliburton Energy Services, Inc. Subsea pressure control system
US9398957B2 (en) 2007-05-01 2016-07-26 Moximed, Inc. Femoral and tibial bases
EP3004532A4 (en) * 2013-06-06 2017-01-18 Shell Internationale Research Maatschappij B.V. Propellant driven accumulator
US9567843B2 (en) 2009-07-30 2017-02-14 Halliburton Energy Services, Inc. Well drilling methods with event detection
US9605507B2 (en) 2011-09-08 2017-03-28 Halliburton Energy Services, Inc. High temperature drilling with lower temperature rated tools
US9823373B2 (en) 2012-11-08 2017-11-21 Halliburton Energy Services, Inc. Acoustic telemetry with distributed acoustic sensing system
EP3218572A4 (en) * 2014-11-13 2018-07-18 Bastion Technologies, Inc. Multiple gas generator driven pressure supply

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7836946B2 (en) 2002-10-31 2010-11-23 Weatherford/Lamb, Inc. Rotating control head radial seal protection and leak detection systems
US8826988B2 (en) 2004-11-23 2014-09-09 Weatherford/Lamb, Inc. Latch position indicator system and method
US7926593B2 (en) 2004-11-23 2011-04-19 Weatherford/Lamb, Inc. Rotating control device docking station
US7997345B2 (en) 2007-10-19 2011-08-16 Weatherford/Lamb, Inc. Universal marine diverter converter
US8286734B2 (en) 2007-10-23 2012-10-16 Weatherford/Lamb, Inc. Low profile rotating control device
US8844652B2 (en) 2007-10-23 2014-09-30 Weatherford/Lamb, Inc. Interlocking low profile rotating control device
US8322432B2 (en) 2009-01-15 2012-12-04 Weatherford/Lamb, Inc. Subsea internal riser rotating control device system and method
US9359853B2 (en) 2009-01-15 2016-06-07 Weatherford Technology Holdings, Llc Acoustically controlled subsea latching and sealing system and method for an oilfield device
US8347983B2 (en) 2009-07-31 2013-01-08 Weatherford/Lamb, Inc. Drilling with a high pressure rotating control device
US8347982B2 (en) 2010-04-16 2013-01-08 Weatherford/Lamb, Inc. System and method for managing heave pressure from a floating rig
US9175542B2 (en) 2010-06-28 2015-11-03 Weatherford/Lamb, Inc. Lubricating seal for use with a tubular
US9249638B2 (en) 2011-04-08 2016-02-02 Halliburton Energy Services, Inc. Wellbore pressure control with optimized pressure drilling
US9447647B2 (en) 2011-11-08 2016-09-20 Halliburton Energy Services, Inc. Preemptive setpoint pressure offset for flow diversion in drilling operations
EP2817214B1 (en) 2012-02-23 2020-07-29 Bastion Technologies, Inc. Pyrotechnic pressure accumulator
FR2995033B1 (en) * 2012-09-05 2014-09-26 Dcns IMMEDIATE AUXILIARY SYSTEM FOR GENERATING ELECTRIC ENERGY AND UNDERWATER UNDERTAKING HAVING AT LEAST ONE SUCH SYSTEM
MX2015013076A (en) * 2013-03-15 2016-08-03 Stored Energy Solutions Inc Hydraulic hybrid system.
WO2015085200A1 (en) * 2013-12-06 2015-06-11 Schlumberger Canada Limited Propellant energy to operate subsea equipment
GB2523079B (en) * 2014-01-10 2020-05-13 Spex Corp Holdings Ltd Hydraulic accumulator
SG11201610617RA (en) * 2014-06-19 2017-01-27 Fmc Technologies Direct hydraulic rapid response module apparatus and method
MX2017006238A (en) * 2014-11-14 2017-07-31 Bastion Tech Inc Monopropellant driven hydraulic pressure supply.
CA3072358C (en) 2017-08-14 2020-07-14 Bastion Technologies, Inc. Reusable gas generator driven pressure supply system
WO2020159999A1 (en) 2019-01-29 2020-08-06 Bastion Technologies, Inc Hybrid hydraulic accumulator
US11512645B2 (en) * 2020-03-06 2022-11-29 Goodrich Corporation Solid-propellant gas generator assemblies and methods
RU2770661C1 (en) * 2021-05-09 2022-04-20 Дмитрий Дмитриевич Салогуб Hydraulic accumulator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078031A1 (en) * 1981-10-26 1983-05-04 Deere & Company Pressure accumulator
US4777800A (en) * 1984-03-05 1988-10-18 Vetco Gray Inc. Static head charged hydraulic accumulator
US6202753B1 (en) * 1998-12-21 2001-03-20 Benton F. Baugh Subsea accumulator and method of operation of same
US6418970B1 (en) * 2000-10-24 2002-07-16 Noble Drilling Corporation Accumulator apparatus, system and method
WO2003025326A2 (en) * 2001-09-19 2003-03-27 Baker Hughes Incorporated Dual piston single phase sampling mechanism and procedure

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018627A (en) * 1958-04-17 1962-01-30 Martin Marietta Corp Rechargeable accumulator
US2979904A (en) * 1959-04-27 1961-04-18 Aerojet General Co Booster device for operating well tools
US3031845A (en) * 1959-10-09 1962-05-01 Ling Temco Vought Inc Hydraulic system
JPS4987971A (en) * 1972-12-27 1974-08-22
US3933338A (en) * 1974-10-21 1976-01-20 Exxon Production Research Company Balanced stem fail-safe valve system
US4074527A (en) * 1976-04-09 1978-02-21 The United States Of America As Represented By The Secretary Of The Air Force Self-contained power subsystem
US4619111A (en) * 1984-09-07 1986-10-28 Hydril Company Oilfield closing device operating system
US4815295A (en) * 1985-06-03 1989-03-28 A/S Raufoss Ammunisjonsfabrikker Valve actuator system for controlling valves
DE10111233A1 (en) * 2001-03-08 2002-09-19 Still Gmbh Energy storage for hydraulic systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078031A1 (en) * 1981-10-26 1983-05-04 Deere & Company Pressure accumulator
US4777800A (en) * 1984-03-05 1988-10-18 Vetco Gray Inc. Static head charged hydraulic accumulator
US6202753B1 (en) * 1998-12-21 2001-03-20 Benton F. Baugh Subsea accumulator and method of operation of same
US6418970B1 (en) * 2000-10-24 2002-07-16 Noble Drilling Corporation Accumulator apparatus, system and method
WO2003025326A2 (en) * 2001-09-19 2003-03-27 Baker Hughes Incorporated Dual piston single phase sampling mechanism and procedure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1917444A4 *

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9376870B2 (en) 2006-11-07 2016-06-28 Halliburton Energy Services, Inc. Offshore universal riser system
US9127512B2 (en) 2006-11-07 2015-09-08 Halliburton Energy Services, Inc. Offshore drilling method
US8887814B2 (en) 2006-11-07 2014-11-18 Halliburton Energy Services, Inc. Offshore universal riser system
US9157285B2 (en) 2006-11-07 2015-10-13 Halliburton Energy Services, Inc. Offshore drilling method
US8881831B2 (en) 2006-11-07 2014-11-11 Halliburton Energy Services, Inc. Offshore universal riser system
US9085940B2 (en) 2006-11-07 2015-07-21 Halliburton Energy Services, Inc. Offshore universal riser system
US9051790B2 (en) 2006-11-07 2015-06-09 Halliburton Energy Services, Inc. Offshore drilling method
US8776894B2 (en) 2006-11-07 2014-07-15 Halliburton Energy Services, Inc. Offshore universal riser system
US9127511B2 (en) 2006-11-07 2015-09-08 Halliburton Energy Services, Inc. Offshore universal riser system
US9398957B2 (en) 2007-05-01 2016-07-26 Moximed, Inc. Femoral and tibial bases
US8578970B2 (en) 2007-09-10 2013-11-12 Cameron International Corporation Pressure-compensated accumulator bottle
WO2009035945A1 (en) * 2007-09-10 2009-03-19 Cameron International Corporation Pressure-compensated accumulator bottle
US8291938B2 (en) 2007-09-10 2012-10-23 Cameron International Corporation Pressure-compensated accumulator bottle
EP2466151A1 (en) * 2007-09-10 2012-06-20 Cameron International Corporation Pressure-compensated accumulator bottle
GB2490984B (en) * 2008-08-04 2013-03-13 Cameron Int Corp An accumulator for hydraulically actuating subsea equipment
GB2490984A (en) * 2008-08-04 2012-11-21 Cameron Int Corp Subsea differential-area accumulator
US8281875B2 (en) 2008-12-19 2012-10-09 Halliburton Energy Services, Inc. Pressure and flow control in drilling operations
US9567843B2 (en) 2009-07-30 2017-02-14 Halliburton Energy Services, Inc. Well drilling methods with event detection
US8286730B2 (en) 2009-12-15 2012-10-16 Halliburton Energy Services, Inc. Pressure and flow control in drilling operations
US8397836B2 (en) 2009-12-15 2013-03-19 Halliburton Energy Services, Inc. Pressure and flow control in drilling operations
US9169700B2 (en) 2010-02-25 2015-10-27 Halliburton Energy Services, Inc. Pressure control device with remote orientation relative to a rig
US8820405B2 (en) 2010-04-27 2014-09-02 Halliburton Energy Services, Inc. Segregating flowable materials in a well
US8201628B2 (en) 2010-04-27 2012-06-19 Halliburton Energy Services, Inc. Wellbore pressure control with segregated fluid columns
US8261826B2 (en) 2010-04-27 2012-09-11 Halliburton Energy Services, Inc. Wellbore pressure control with segregated fluid columns
US9163473B2 (en) 2010-11-20 2015-10-20 Halliburton Energy Services, Inc. Remote operation of a rotating control device bearing clamp and safety latch
US8739863B2 (en) 2010-11-20 2014-06-03 Halliburton Energy Services, Inc. Remote operation of a rotating control device bearing clamp
US10145199B2 (en) 2010-11-20 2018-12-04 Halliburton Energy Services, Inc. Remote operation of a rotating control device bearing clamp and safety latch
US9222320B2 (en) 2010-12-29 2015-12-29 Halliburton Energy Services, Inc. Subsea pressure control system
US8833488B2 (en) 2011-04-08 2014-09-16 Halliburton Energy Services, Inc. Automatic standpipe pressure control in drilling
US9080407B2 (en) 2011-05-09 2015-07-14 Halliburton Energy Services, Inc. Pressure and flow control in drilling operations
US9605507B2 (en) 2011-09-08 2017-03-28 Halliburton Energy Services, Inc. High temperature drilling with lower temperature rated tools
US10233708B2 (en) 2012-04-10 2019-03-19 Halliburton Energy Services, Inc. Pressure and flow control in drilling operations
US9823373B2 (en) 2012-11-08 2017-11-21 Halliburton Energy Services, Inc. Acoustic telemetry with distributed acoustic sensing system
EP3004532A4 (en) * 2013-06-06 2017-01-18 Shell Internationale Research Maatschappij B.V. Propellant driven accumulator
WO2015043117A1 (en) * 2013-09-27 2015-04-02 陈启星 Liquid-trap and filled-piston based liquid seal energy accumulator and hydraulic system thereof
EP3218572A4 (en) * 2014-11-13 2018-07-18 Bastion Technologies, Inc. Multiple gas generator driven pressure supply

Also Published As

Publication number Publication date
NO20053520L (en) 2007-01-19
EP1917444B1 (en) 2013-01-09
CA2615679C (en) 2012-05-22
EP1917444A4 (en) 2012-06-13
AU2006288011B2 (en) 2010-07-15
NO20053520D0 (en) 2005-07-18
BRPI0613629B1 (en) 2018-02-14
US8474253B2 (en) 2013-07-02
EA200800318A1 (en) 2008-08-29
BRPI0613629A2 (en) 2011-01-18
EA010819B1 (en) 2008-12-30
EP1917444A1 (en) 2008-05-07
NO326166B1 (en) 2008-10-13
CA2615679A1 (en) 2007-03-15
AU2006288011A1 (en) 2007-03-15
US20090211239A1 (en) 2009-08-27
DK1917444T3 (en) 2013-04-15

Similar Documents

Publication Publication Date Title
EP1917444B1 (en) Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof
RU2448237C2 (en) Underwater device for actuating underwater equipment
EP3077612B1 (en) Propellant energy to operate subsea equipment
EP2109707B1 (en) A method for recovering fluid from an underwater apparatus submerged in deep water
CN105324550B (en) Propellant actuated formula accumulator
MX2014010170A (en) Pyrotechnic pressure accumulator.
US20130074687A1 (en) Control of Underwater Actuators Using Ambient Pressure
US10066643B2 (en) Multiple gas generator driven pressure supply
RU2648912C1 (en) Submarine launcher
NO20200155A1 (en) Reusable gas generator driven pressure supply system
EP1226333B1 (en) A device in a subsea system for controlling a hydraulic actuator and a subsea system with a hydraulic actuator
JP2008542588A (en) Impulse generator and impulse generating method
MX2008000918A (en) Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof
CN113409670A (en) Pipeline shield construction device for simulating deep sea environment
WO2017062040A1 (en) Accumulator
KR102185198B1 (en) Actuator assembly operated by air pressure and oil pressure and control method for the actuator assembly
WO1998020257A1 (en) Inverted accumulator
US20230313817A1 (en) Depth compensated accumulator system for generation of hydraulic power to subsea operations
RU67976U1 (en) WEIGHT LIFTING DEVICE (SCREWDRIVER)
NO331313B1 (en) An actuator for an underwater pressure control device and a method for emergency operation of an underwater control system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2615679

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: MX/a/2008/000918

Country of ref document: MX

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2006288011

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 2006769443

Country of ref document: EP

Ref document number: 200800318

Country of ref document: EA

ENP Entry into the national phase

Ref document number: 2006288011

Country of ref document: AU

Date of ref document: 20060712

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 11989045

Country of ref document: US

ENP Entry into the national phase

Ref document number: PI0613629

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20080118