EP3283774B1 - Système de vessie pour accumulateur à piston et procédé - Google Patents

Système de vessie pour accumulateur à piston et procédé Download PDF

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Publication number
EP3283774B1
EP3283774B1 EP16780392.3A EP16780392A EP3283774B1 EP 3283774 B1 EP3283774 B1 EP 3283774B1 EP 16780392 A EP16780392 A EP 16780392A EP 3283774 B1 EP3283774 B1 EP 3283774B1
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EP
European Patent Office
Prior art keywords
bladder
accumulator
fluid
piston
dispersion tube
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
EP16780392.3A
Other languages
German (de)
English (en)
Other versions
EP3283774A4 (fr
EP3283774A1 (fr
Inventor
Tom Frey
Doug Compton
Nathan SCHMIDT
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.)
Reel Power Licensing Corp
Original Assignee
Reel Power Licensing Corp
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 Reel Power Licensing Corp filed Critical Reel Power Licensing Corp
Priority claimed from PCT/US2016/000032 external-priority patent/WO2016167846A1/fr
Publication of EP3283774A1 publication Critical patent/EP3283774A1/fr
Publication of EP3283774A4 publication Critical patent/EP3283774A4/fr
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Publication of EP3283774B1 publication Critical patent/EP3283774B1/fr
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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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
    • E21B33/064—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers specially adapted for underwater well heads
    • 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
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/16—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means in the form of a tube
    • F15B1/165—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means in the form of a tube in the form of a bladder
    • 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
    • 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
    • F15B2201/3152—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
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3158—Guides for the flexible separating means, e.g. for a collapsed bladder
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/41—Liquid ports

Definitions

  • the present invention relates to a device, system and method for subsea piston accumulators utilized with blowout preventers in oil and gas well operations. More particularly, the present invention provides an improved piston accumulator and bladder accumulator system having a dispersion tube to ensure the hydraulic fluid stored in the bladder accumulator is communicated into the seawater chamber of the subsea piston accumulators as desired.
  • blowout preventer is a large, specialized valve or similar mechanical device, usually installed redundantly in stacks, used to seal, control and monitor oil and gas wells.
  • Blowout preventers were developed to cope with extreme erratic pressures and uncontrolled flow, often referred to as a formation kick, emanating from a well reservoir during drilling. Kicks can lead to a potentially catastrophic event known as a blowout.
  • blowout preventers are intended to prevent tubing such as drill pipe and well casing, tools and drilling fluid from being blown out of the wellbore when a blowout threatens.
  • a typical subsea deep-water blowout preventer system includes hydraulic accumulator module that maintains the hydraulic fluid pressures needed to actuate valves on the blow out preventer.
  • a subsea accumulator stores hydraulic fluid under pressure and must release the hydraulic fluid on demand to provide fast closure of the preventers and for cycling all critical components.
  • the fluid to be pressurized is typically an oil-based product or a water-based product with added lubricity and corrosion protection.
  • Accumulators with a piston typically have a piston sliding up and down a seal bore to separate the fluid from the gas.
  • a depth compensated piston accumulator must maintain a constant working fluid pressure in the working fluid chamber at any depth.
  • the nitrogen chamber is charged to a specific pressure, which exerts a force on top of the piston, which in turn pressurizes the working hydraulic fluid on the other side of the piston.
  • the ambient seawater pressure squeezes the hydraulic fluid in a bladder accumulator to the same pressure.
  • This seawater pressure from the bladder accumulator is exerted on top of the piston in the seawater chamber. Essentially, all of the pressure force that is lost from the nitrogen due to the increased water pressure in very deep water is regained by directing that ambient pressure to the seawater chamber.
  • the seawater chamber hydraulic fluid is stored in the bladder of the bladder accumulator. In this situation, the bladder is completely full.
  • the seawater chamber is filled with the hydraulic fluid from the bladder. It is desirable that the seawater chamber fill completely, which is a function dependent on the bladder performance.
  • the bladder accumulator must communicate fluid to the seawater chamber as needed as well as receive fluid from the seawater chamber.
  • a known problem is ensuring that the hydraulic fluid is able to get into the seawater chamber from the bladder accumulator. As the piston moves and the volume in the seawater chamber increases, the fluid from the bladder accumulator is sucked into the seawater chamber. If fluid is not transferred, a vacuum will be pulled into the chamber and the depth compensation function will fail.
  • bladder accumulators are typically made for a nylon material and also provided with a bladder. It is also known in the prior art devices for the bladder to collapse inside the bladder accumulator when fluid is being sucked into the seawater chamber. This may impede the flow of the fluid and prevent the accumulator from working properly and or as efficiently.
  • US2013/0340421A1 discloses a device for transferring a hydraulic working pressure in a pressure fluid for actuating hydraulic units of deep-sea systems.
  • the invention provides a subsea piston accumulator and bladder accumulator system according to claim 1.
  • the present invention provides a new and improved apparatus, system and method of use that provides better bladder accumulator performance.
  • the general purpose of the present invention which will be described subsequently in greater detail, is to provide a new and improved subsea piston accumulator and bladder accumulator system for blow out preventers, which has all the advantages of the prior art devices and none of the disadvantages.
  • the present invention is a system for an improved subsea piston accumulator and bladder accumulator having a dispersion tube to ensure that hydraulic fluid stored in the bladder is sucked into the seawater chamber of the accumulator.
  • the tube is ported allowing fluid to constantly be supplied to the chamber regardless of the fluid depth in the bladder.
  • the invention also contemplates a special foot allowing the bladder accumulator and bladder to be shipped in a horizontal position preventing the bladder and dispersion tube from being damaged and may further include a bladder cradle to distribute the weight of the fluid in the bladder reducing the stress on the fitting where the bladder foot is installed.
  • an object of the present invention is to provide a new and improved piston accumulator and bladder accumulator system, which allows for transmitting fluids utilizing a ported dispersion tube to allow fluid to constantly be supplied to the chamber regardless of the fluid depth in the bladder accumulator.
  • Another object of the present invention is to provide a new and improved piston accumulator and bladder accumulator system which may include a special foot allowing the bladder accumulator and bladder to be shipped in a horizontal position preventing the bladder and dispersion tube from being damaged and a bladder cradle designed to distribute the weight of the fluid in the bladder reducing the stress on the fitting where the bladder foot is installed.
  • An even further object of the present invention is to provide a new and improved piston accumulator and bladder accumulator system which is susceptible to a low cost of installation and labor, which accordingly is then susceptible to low prices of sale to the consuming industry, thereby making such a system economically available to those in the field.
  • Still another object of the present invention is to provide a new and improved piston accumulator and bladder accumulator system which provides all of the advantages of the prior art while simultaneously overcoming some of the disadvantages normally associated therewith.
  • reference character 10 generally designates a new and improved bladder accumulator and piston accumulator system constructed in accordance with the present invention.
  • System 10 is generally used in oil and gas well operations such as but not limited to blow out preventers and may be utilized in other operations not associated with oil and gas drilling operations.
  • Bladder accumulator 20 may include a top 30, a length 40, a bottom 50, an interior 60, an exterior 70, and outlet 80 for communicating fluid to subsea piston accumulator 90.
  • Bladder accumulator 20 may be made from nylon but is not limited to such. It is understood that bladder accumulator 20 is elastomeric and or somewhat elastomeric to compress and expand depending on ambient subsea water pressure.
  • Bladder accumulator 20 includes a bladder 100 such as but not limited to plastic. Bladder 100 generally lines the interior 60 of bladder accumulator 20.
  • the system 10 includes a dispersion tube 110 having a top 120, a length 130, a bottom 140, an interior and or inner diameter 150, an exterior and or outer diameter 160, and so forth.
  • Tube 110 may be made of stainless but is not limited to same.
  • Length 130 may be 16 feet
  • interior diameter 150 may be about 1 inch
  • outer diameter 160 may be an inch. It is understood that lengths, sizes, shapes and so forth may be larger and or smaller and the current invention 10 should not be considered limited to the illustrations and examples.
  • Tube 110 may not necessarily be a round tube configuration and may be square, triangular and so forth.
  • Tube 110 includes apertures 170, which may be drilled out and relatively small such as a 1 ⁇ 4 inch but is to be understood that larger size, configuration and arrangement is contemplated.
  • the dispersion tube 110 generally provides a structure wherein bladder accumulator 20 and bladder 100 may have a passageway for fluid to travel the length of bladder accumulator 20 even if part of bladder 100 and bladder accumulator 20 collapse and impedes fluid flow when fluid is being moved to accumulator 90.
  • Tube 110 is fixed inside bladder accumulator bladder 20 wherein top 120 of tube 110 is fixed at top 30 of bladder accumulator 20 and in communication 75 with outlet 80.
  • Communication 75 may be a hose, line, conduit and so forth as known in the art.
  • tube 110 bottom 140 may be fixed at bladder accumulator 20 bottom 50.
  • 110 may be threaded at top 120 for securing to outlet 80.
  • Bottom 140 of tube 110 may be fixed by sliding in a foot 180, which may be a larger diameter tube fixed by a bladder cradle 190. It is understood that numerous other embodiments are contemplated to generally secure tube 110.
  • invention 10 may utilize cradle 190, which may be fixed at bottom 50 of bladder accumulator 20 for supporting tube 110 during transportation and movement in general.
  • Accumulator 90 is known in the art and may include a nitrogen chamber 200, working fluid chamber 210, working fluid port 220, seawater chamber 230, seawater port 240, a vacuum chamber 250, and so forth.
  • Conduit 260 may be between bladder accumulator 20 and seawater port 240 for communicating fluid 270 back and forth from bladder accumulator 20 to seawater chamber 230.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Earth Drilling (AREA)

Claims (5)

  1. Système à accumulateur à vessie et à accumulateur à piston sous-marin (10) comportant :
    un accumulateur à piston sous-marin (90) ayant un orifice pour eau de mer (240) servant à des fins de communication sélective de liquide dans et hors dudit accumulateur à piston sous-marin (90) ;
    un accumulateur à vessie (20) ayant une partie intérieure (60) et une ouverture servant à des fins de communication dudit liquide dans et hors de ladite partie intérieure dudit accumulateur à vessie (20) ; et
    une vessie (100) disposée dans ladite partie intérieure (60) dudit accumulateur à vessie (20), ladite vessie (100) ayant une partie intérieure adaptée pour retenir ledit fluide et dans lequel ladite vessie (100) a une ouverture servant à des fins de communication dudit fluide dans et hors de ladite partie intérieure de ladite vessie (100) ;
    caractérisé en ce que le système (10) comporte par ailleurs un tube de dispersion (110) disposé dans ladite vessie (100), ledit tube de dispersion (110) ayant une première extrémité (120) avec une ouverture (80) servant à des fins de communication dudit fluide dans et hors dudit tube de dispersion (110), une longueur (130), une deuxième extrémité (140), et une pluralité d'ouvertures (170) sur ladite longueur qui sont adaptées à des fins de communication dudit liquide dans et hors dudit tube de dispersion (110) et dans et hors de ladite partie intérieure de ladite vessie (100), et
    en ce que l'accumulateur à vessie (20) est élastomère de telle sorte qu'il se comprime et se déploie en fonction de la pression ambiante de l'eau sous-marine.
  2. Système (10) selon la revendication 1, dans lequel ladite deuxième extrémité (140) dudit tube de dispersion (110) est attachée de manière amovible à l'intérieur dudit accumulateur à vessie (20) par le biais d'un berceau (190) qui est fixé sur la partie inférieure dudit accumulateur à vessie (20).
  3. Système (10) selon la revendication 2, dans lequel ledit berceau (190) comprend un pied (180) adapté pour permettre à ladite deuxième extrémité (140) dudit tube de dispersion (110) de coulisser jusque dans ledit pied (180).
  4. Système (10) selon la revendication 3, dans lequel ladite première extrémité (120) dudit tube de dispersion (110) est fixée sur ladite partie intérieure dudit accumulateur à vessie (20).
  5. Système (10) selon la revendication 3, dans lequel ladite deuxième extrémité (140) dudit tube de dispersion (110) est arrondie.
EP16780392.3A 2015-04-15 2016-04-07 Système de vessie pour accumulateur à piston et procédé Active EP3283774B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562147705P 2015-04-15 2015-04-15
PCT/US2016/000032 WO2016167846A1 (fr) 2015-04-15 2016-04-07 Système de vessie pour accumulateur à piston et procédé

Publications (3)

Publication Number Publication Date
EP3283774A1 EP3283774A1 (fr) 2018-02-21
EP3283774A4 EP3283774A4 (fr) 2018-12-05
EP3283774B1 true EP3283774B1 (fr) 2023-06-21

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EP16780392.3A Active EP3283774B1 (fr) 2015-04-15 2016-04-07 Système de vessie pour accumulateur à piston et procédé

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EP (1) EP3283774B1 (fr)
CN (1) CN107614893B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111473005B (zh) * 2020-04-17 2022-03-01 张永利 一种夹层腔式液压囊及有该囊的蓄能器
CN114893143B (zh) * 2022-07-14 2022-09-09 威海海洋职业学院 一种海洋油井井口装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721580A (en) * 1950-11-06 1955-10-25 Greer Hydraulics Inc Bladder type pressure accumulator
US3062153A (en) * 1961-01-25 1962-11-06 William A Losey Method of and means for pumping various kinds of matter
GB1108551A (en) * 1964-05-26 1968-04-03 Power Aux Ies Ltd Improvements in or relating to pressure accumulators for hydraulic liquid
US4413652A (en) * 1981-03-30 1983-11-08 Oil Air Industries, Inc. Gas-liquid accumulator
CN2611657Y (zh) * 2003-01-23 2004-04-14 王祖林 管路蓄能器
SE530992C2 (sv) * 2006-03-10 2008-11-11 Haldex Traction Ab Ackumulator, hydraulsystem och allhjulskoppling
US7520129B2 (en) * 2006-11-07 2009-04-21 Varco I/P, Inc. Subsea pressure accumulator systems
BRPI0920225A2 (pt) * 2008-10-07 2018-03-13 Richard Wood Roy sistema gerador de energia
DE102011009276A1 (de) * 2011-01-25 2012-07-26 Hydac Technology Gmbh Vorrichtung zum Übertragen eines hydraulischen Arbeitsdruckes in einer Druckflüssigkeit zur Druckbetätigung hydraulischer Einrichtungen von Tiefseeanlagen
DE102011111098A1 (de) * 2011-08-19 2013-05-16 Hydac Technology Gmbh Druckbehälter

Also Published As

Publication number Publication date
EP3283774A4 (fr) 2018-12-05
CN107614893A (zh) 2018-01-19
EP3283774A1 (fr) 2018-02-21
CN107614893B (zh) 2020-08-11

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