WO2011161517A1 - Differential pressure controlled motor and pump barrier fluids pressure regulation system - Google Patents
Differential pressure controlled motor and pump barrier fluids pressure regulation system Download PDFInfo
- Publication number
- WO2011161517A1 WO2011161517A1 PCT/IB2011/001391 IB2011001391W WO2011161517A1 WO 2011161517 A1 WO2011161517 A1 WO 2011161517A1 IB 2011001391 W IB2011001391 W IB 2011001391W WO 2011161517 A1 WO2011161517 A1 WO 2011161517A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- motor
- pump
- pressure
- regulation system
- hydraulic fluid
- Prior art date
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/008—Pumps for submersible use, i.e. down-hole pumping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/062—Canned motor pumps pressure compensation between motor- and pump- compartment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0686—Units comprising pumps and their driving means the pump being electrically driven specially adapted for submerged use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/063—Lubrication specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/122—Shaft sealings using sealing-rings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/406—Sealings between relatively-moving surfaces by means of fluid by at least one pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
Definitions
- the present invention relates generally to subsea equipment involved in the transport of process fluids generated in subsea hydrocarbon production. More specifically, the present invention is concerned with a system that is designed for management of barrier and lubrication fluid pressures in a subsea motor and pump module.
- a process fluid in subsea hydrocarbon production is typically a multiphase fluid comprising oil and gas and eventually solid matter, which is extracted from an underground reservoir.
- a motor/ pump module is arranged on the sea floor and configured for transport of the process fluid from the reservoir to a surface or land based host facility.
- the motor/ pUmp module is frequently subjected to substantial variations in pressure in the pumped medium, as well as substantial transitional loads during pump start and stop sequences, e.g.
- the medium pressure at the suction side of the pump may be in the order of hundreds of bar, requiring corresponding measures in the motor/pump module to prevent process fluid and particulate matter from immigration from the pump interior into a motor housing via bearings and seals in the motor/ pump module.
- Screw rotor pumps are often used for the purpose of pumping a multiphase fluid in subsea production.
- the screw rotor pump is a positive displacement type of pump having two screws that are driven in rotation with intermeshing gears, between which a specific volume of fluid is displaced in the axial direction of the screws from a suction side of the pump to be discharged on the pressure side of the pump.
- the screws are journalled in bearings in a pump housing, and are drive-connected to a motor arranged in a motor housing.
- twin rotor screw pump In case of a twin rotor screw pump,
- the motor housing is hydraulically separated from the pump by a seal arrangement, where the drive shaft is journalled to extend for connection with the pump rotor shaft.
- the pump bearings are separated from the pump medium by seal arrangements at both ends of the pump.
- barrier fluid and lubrication fluid are basically different definitions of the same type of fluid applied to protect the internals of the motor/ pump module. Accordingly, a motor housing that protects the motor from the ambient sea and from the medium in the pump is to be maintained at a pressure above the internal pressure of the pump, this way acting also as a barrier which prevents intrusion of process fluid and particles into the motor housing via the seal and bearing arrangement. In result of the pressure difference, a leak flow of hydraulic fluid along the drive shaft is unavoidable.
- the leakage rate is dependent on fluid properties, differential pressure, the transient operating conditions of the pump and the tightness of the seal(s).
- the leakage is compensated by refilling the motor housing from an external supply of hydraulic fluid.
- hydraulic fluid is typically supplied also to the pump for lubrication of its internal structure, such as pump rotor bearings, seals and timing gears.
- the pressure in the lubrication fluid circuit of the pump is to be maintained above the pressure of the medium that is displaced through the pump, in order to prevent intrusion of process fluid and particles into pump bearings, seals and timing gears. Leakage via the pump seals into the pumped medium is compensated by refilling from an external supply of hydraulic fluid.
- the motor and pump can be drive-connected inside the motor housing, or outside the motor housing.
- the motor and pump can share one and the same shaft with no separate coupling to connect the two in a driving relationship.
- the pump shaft can be coupled to the motor shaft inside the motor housing.
- the motor and pump is drive-connected by means of a coupling located in a coupling chamber defined between the motor housing and the pump.
- motor barrier fluid and pump barrier fluid is supplied via the umbilical, and leakage compensation and pressure control is managed through directional control valves located at the topside facility.
- leakage compensation and pressure control is managed through directional control valves located at the topside facility.
- the response times and control requirements in lubrication and cooling fluid systems increase correspondingly.
- there is a rising need for a motor and pump barrier fluids pressure regulation system that operates with instant response to a change in pressures in the motor and pump module and which provides increased reliability in operation.
- the present invention thus aims at providing a motor and pump barrier fluids pressure regulation system for a subsea motor and pump module which avoids the problems of prior art systems, and specifically those problems which are associated with long step-out distances and great water depths.
- the motor barrier fluid circuit shall be understood to include the fluid volumes in the motor housing cavity and its associated
- the pump barrier fluid circuit shall be understood at least to include the fluid volumes in the connection chamber cavity and its associated components and flow lines which are involved for controlling the fluid pressure in the connection chamber cavity.
- the pump barrier fluid circuit may also include fluid volumes in other cavities or passages in the pump.
- a pressure regulation system for the management of motor and pump barrier fluids in a subsea motor/ pump application comprises:
- a barrier fluid circuit providing fluid flow communication from a hydraulic fluid supply to a first cavity in the motor and pump module, • a pressure controlled flow control valve controlling the supply of hydraulic fluid to the barrier fluid circuit,
- a pilot pressure circuit comprising means for detecting and returning to the pressure controlled flow control valve a differential pressure over a flow restriction connecting the first and second cavities.
- An automatic pressure control system is in this way provided locally at the subsea motor and pump module, and characterized by a fast response and high reliability.
- the system may be multiplied to maintain, independently, constant differential pressures between fluids in:
- a flow control valve is used to supply fluid to the motor housing in order to maintain a constant differential pressure across a restriction, this way maintaining a constant overpressure in the motor barrier circuit relative to the pump barrier circuit, and thus across the motor shaft seal.
- the flow rate through the flow control valve is controlled by the differential pressure over a restriction.
- the supply fluid flow rate is always identical to the leakage rate at the defined differential pressure, regardless of system pressure variations. If the seal leakage rate should increase due to wear, e.g., the valve will automatically increase the flow rate as required to maintain the differential pressure across the seal. When the pump pressure increases during normal operations, the valve will automatically adjust the flow rate to maintain a constant differential pressure across the seal.
- valve When the pump pressure is reduced during normal operations, the valve will automatically adjust the flow rate as required to maintain a constant differential pressure across the seal.
- pump barrier fluid is received from the motor barrier fluid circuit via a flow restriction of fixed orifice diameter arranged externally of the motor and pump module, and over which the differential pressure is detected and returned to the pressure controlled on/off valve that feeds hydraulic fluid into the motor and pump barrier fluid circuits in response to detected deviations from a predefined, desired pressure difference.
- this embodiment comprises a set of valves, including at least first and second valves, which are arranged in parallel to feed hydraulic fluid into the motor barrier fluid circuit, and which are each responsive to the differential pressure over the flow restriction, and further wherein said at least two pressure controlled flow control valves are individually responsive to separate ranges of the differential pressure over the flow restriction.
- first valve is preferably set to open for hydraulic fluid flow into the motor barrier fluid circuit in result of a differential pressure at or below a first predefined differential pressure at the flow restriction
- second valve is preferably set to open for hydraulic fluid flow into the motor barrier fluid circuit in result of a differential pressure at or below a second predefined differential pressure lower than the first predefined differential pressure
- the first predefined differential pressure may be set to about 5 bar, and the second predefined
- differential pressure can be set to about 4.5 bar.
- the first valve can be sized for lower flow rates and the second valve be sized for higher flow rates.
- the first valve may be sized for flow rates ranging down to about 0.3 1/min
- the second valve may be sized for flow rates ranging up to about 100 1/min or above.
- an ON/OFF valve may be connected in series with the second pressure controlled flow control valve of higher flow rate in order to control eventual internal leakage in this valve.
- a pressure controlled safety relief valve may be arranged in parallel with the flow restriction to dump hydraulic fluid from the motor barrier fluid circuit into the pump.
- the motor and pump barrier fluids pressure regulation system of the present invention may advantageously be applied to a subsea motor and pump module which comprises a pump motor disposed in a motor housing; a pump disposed in a pump housing having a pump inlet at a suction side and a pump outlet at a discharge side of the pump, and a twin-screw pump-rotor assembly arranged there between and journalled in bearings in the pump housing.
- the pump-rotor assembly is drive-connected to the motor through a drive-shaft that reaches between the motor and pump via a seal arrangement and is configured to displace a fluid medium from the pump inlet for discharge via the pump outlet.
- Fig. 1 is a diagram illustrating the motor and a pump barrier fluids pressure regulation system in a first embodiment
- Fig. 2 is a corresponding diagram illustrating a second embodiment of the pressure regulations system.
- a subsea motor and pump module comprises a motor/pump assembly generally denoted 1 to which motor barrier fluid and pump barrier fluid is supplied from an external hydraulic fluid supply.
- the motor/ pump assembly comprises a motor that is encased in a pressurized, water tight enclosure or motor housing 2, as well as a pump rotor assembly encased in a pump housing 3.
- the motor driving the pump is typically an electric motor, although other drive units such as hydraulic motors or turbines may alternatively be employed.
- the pump rotor is configured for displacement of a pumped medium which enters the pump via a pump inlet 4 to be discharged via a pump outlet 5, as illustrated by an arrow F.
- the pump rotor is drive-connected to the motor in a connection chamber 6, the interior of which is hydraulically separated from the pressurized (typically oil-filled) motor housing by means of a seal arrangement 7 which seals against the outside of a rotary shaft by which the pump rotor is drive-connected to the motor.
- the pump rotor is further journalled in bearing arrangements in the pump housing 3.
- pump barrier fluid is typically circulated for lubrication of internal structures in the pump, such as bearings, seals, timing gears if appropriate, etc., providing also a barrier towards the medium which passes through the pump.
- Motor barrier fluid and pump barrier fluid is supplied to the subsea motor and pump module from an external supply (topside offshore or onshore) of hydraulic fluid via hydraulic fluid supply line 8. All other components of the system are installed subsea.
- Motor barrier fluid is supplied to the motor housing via a flow control valve 9 which controls the flow of hydraulic fluid into a motor barrier fluid circuit 10 that opens into the motor housing.
- Pump barrier fluid is received in the connection chamber 6 from the motor housing 2 which communicates with the connection chamber via the seal arrangement 7. This flow communication over the seal arrangement 7 is a leakage of hydraulic fluid through the seal, the seal arrangement 7 in this context representing a restriction of fixed orifice diameter, disregarding wear of seal surfaces over time.
- the flow control valve 9 is pressure controlled and operated in response to the difference in pressure between the motor barrier fluid on the upstream side of flow restriction 7 and the pump barrier fluid on the downstream side thereof, i.e. the pressure difference between the motor housing and the connection chamber.
- the differential pressure over the flow restriction 7 is continuously detected and returned to the flow control valve 9 by means of a pilot pressure circuit 11.
- the pilot pressure circuit 11 is illustrated by thin and/ or broken lines.
- pump barrier fluid is supplied to the pump /connection chamber 6 from the motor barrier fluid circuit 10 via pump barrier fluid circuit 12.
- a flow restriction 13 of fixed orifice diameter is arranged in the pump barrier fluid circuit externally of the motor/ pump module and restricts the flow of hydraulic fluid from the motor barrier fluid circuit 10 into the pump barrier fluid circuit 12.
- valve 9 is a pilot controlled flow control valve which cooperates with an internal (7) or an external (13) restriction to maintain a constant pressure difference between the motor barrier and pump barrier fluid circuits by adjusting the flow through the flow control valve.
- the flow through the restriction is only a small flow going into the pump via pump barrier fluid circuit, whereas the main flow is supplied to the motor via the motor barrier circuit.
- at least one additional pressure controlled flow control valve 14 may optionally be arranged in parallel with the first flow control valve 9 to supply fluid into the motor barrier fluid circuit 10.
- the flow control valves 9 and 14 are each responsive to the pressure in the pilot pressure circuit 11. As previously discussed, the flow control valves 9 and 14 may be individually responsive to separate ranges of the differential pressure over the flow restriction, and they may also be sized for different flow rates. If required, a set of more than two flow control valves may be connected in parallel to supply hydraulic fluid into the motor barrier fluid circuit.
- reference number 15 refers to a pressure relief valve arranged to permit motor barrier fluid into the pump barrier fluid circuit via a by-pass line 16 which opens into the pump barrier fluid circuit downstream of the flow restriction 7 or 13.
- the pressure relief valve 15 manages and controls higher differential pressure during start-up and resulting from thermal expansion of the liquid volumes in the motor and pump.
- the pressure relief valve 15 also operates as a safety valve in case of an unexpected rise of the fluid pressure to a too high level.
- a one-way valve 17 is preferably arranged to prevent back-flow from the pump into the motor barrier circuit 10.
- a pressurized accumulator 18 may be arranged in the supply fluid line to provide adequate supply fluid pressure to the pressure controlled flow control valve(s) 9, 14.
- the illustrated embodiment meets the purpose of the invention, namely to maintain a constant differential pressure between two fluid-filled cavities which are
- Fluid is supplied at a controlled flow rate to the cavity having the highest pressure such that the differential pressure is maintained constant independent of leakage rate between the cavities.
- the invention is also effective for compensation of flow rates caused by compression and thermal expansion of the fluids in the cavities.
- the invention is disclosed with reference to a system for controlling barrier fluid pressures over an interface between a motor housing and a connection chamber, it will be realized that a similar setup can be used for controlling barrier fluid pressures at other interfaces in a motor and pump module at subsea level, requiring fluid barriers for separation or for preventing intrusion from surrounding media. It will be realized that in addition to the interfaces listed in the summary, the invention may be applied at any separating interface in the motor or pump, such as seals and bearings forming parts of a pump lubrication system, or seals and bearings forming parts of a motor lubrication or cooling system, e.g.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Details Of Reciprocating Pumps (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SG2012094777A SG186445A1 (en) | 2010-06-22 | 2011-06-20 | Differential pressure controlled motor and pump barrier fluids pressure regulation system |
US13/806,572 US20130164152A1 (en) | 2010-06-22 | 2011-06-20 | Differential pressure controlled motor and pump barrier fluids pressure regulation system |
AU2011268631A AU2011268631A1 (en) | 2010-06-22 | 2011-06-20 | Differential pressure controlled motor and pump barrier fluids pressure regulation system |
CN2011800312953A CN102971487A (en) | 2010-06-22 | 2011-06-20 | Differential pressure controlled motor and pump barrier fluids pressure regulation system |
BR112012033193A BR112012033193A2 (en) | 2010-06-22 | 2011-06-20 | motor and pump barrier fluid pressure regulation system controlled by differential pressure. |
EP11797684.5A EP2585680A1 (en) | 2010-06-22 | 2011-06-20 | Differential pressure controlled motor and pump barrier fluids pressure regulation system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20100903 | 2010-06-22 | ||
NO20100903A NO332973B1 (en) | 2010-06-22 | 2010-06-22 | Pressure control system for motor and pump barrier fluids with differential pressure control |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011161517A1 true WO2011161517A1 (en) | 2011-12-29 |
Family
ID=45370908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2011/001391 WO2011161517A1 (en) | 2010-06-22 | 2011-06-20 | Differential pressure controlled motor and pump barrier fluids pressure regulation system |
Country Status (8)
Country | Link |
---|---|
US (1) | US20130164152A1 (en) |
EP (1) | EP2585680A1 (en) |
CN (1) | CN102971487A (en) |
AU (1) | AU2011268631A1 (en) |
BR (1) | BR112012033193A2 (en) |
NO (1) | NO332973B1 (en) |
SG (1) | SG186445A1 (en) |
WO (1) | WO2011161517A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015127524A1 (en) * | 2014-02-26 | 2015-09-03 | Fmc Technologies Do Brasil Ltda | Installation for use of control fluid as barrier fluid for electric motors coupled to subsea pumps |
WO2016048163A1 (en) * | 2014-09-26 | 2016-03-31 | Aker Subsea As | High pressure barrier fluid system for subsea pumps and compressors |
WO2016083196A1 (en) | 2014-11-24 | 2016-06-02 | Vetco Gray Scandinavia As | Method for regulation of a differential pressure across a seal and associated system |
WO2017064274A1 (en) | 2015-10-15 | 2017-04-20 | Aker Solutions As | Subsea barrier fluid system |
WO2021158118A1 (en) * | 2020-02-06 | 2021-08-12 | Waterise As | Subsea motor and pump assembly and its use in a subsea desalination plant |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2517132B (en) * | 2013-06-12 | 2015-11-11 | Aes Eng Ltd | Barrier System for Mechanical Seal |
AU2014372275B2 (en) * | 2013-12-23 | 2017-12-07 | Vetco Gray Scandinavia As | Method and system for supplying barrier fluid in a subsea motor and pump assembly |
WO2016144874A1 (en) * | 2015-03-06 | 2016-09-15 | Cold Jet, Llc | Particle feeder |
US10260489B2 (en) * | 2015-05-14 | 2019-04-16 | Petrospec Engineering Inc. | Method of supplying fluid to a submersible pump |
CN109681439B (en) * | 2019-01-31 | 2024-03-22 | 长沙矿冶研究院有限责任公司 | Deepwater pump with pressure compensation function |
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US5746435A (en) * | 1994-09-30 | 1998-05-05 | Arbuckle; Donald P. | Dual seal barrier fluid leakage control method |
WO1998053182A1 (en) * | 1997-05-20 | 1998-11-26 | Westinghouse Government Services Company Llc | Sub-sea pumping system and associated method |
US6158967A (en) * | 1998-08-26 | 2000-12-12 | Texas Pressure Systems, Inc. | Barrier fluid seal, reciprocating pump and operating method |
WO2008115064A1 (en) * | 2006-10-13 | 2008-09-25 | Framo Engineering As | Sealing system device |
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AU3824995A (en) * | 1994-09-30 | 1996-04-26 | Donald P. Arbuckle | Dual seal barrier fluid leakage control apparatus |
NO323324B1 (en) * | 2003-07-02 | 2007-03-19 | Kvaerner Oilfield Prod As | Procedure for regulating that pressure in an underwater compressor module |
US20080260539A1 (en) * | 2005-10-07 | 2008-10-23 | Aker Kvaerner Subsea As | Apparatus and Method For Controlling Supply of Barrier Gas in a Compressor Module |
NO20075029L (en) * | 2007-10-05 | 2009-04-06 | Multicontrol Hydraulics As | Electrically operated hydraulic pump unit with accumulator module for use in underwater control systems. |
NO327557B2 (en) * | 2007-10-09 | 2013-02-04 | Aker Subsea As | Pump protection system |
US8696331B2 (en) * | 2008-05-06 | 2014-04-15 | Fmc Technologies, Inc. | Pump with magnetic bearings |
NO20110786A1 (en) * | 2011-05-31 | 2012-12-03 | Fmc Kongsberg Subsea As | Subsea compressor directly driven by a permanent magnet motor with a stator and rotor immersed in liquid |
-
2010
- 2010-06-22 NO NO20100903A patent/NO332973B1/en not_active IP Right Cessation
-
2011
- 2011-06-20 AU AU2011268631A patent/AU2011268631A1/en not_active Abandoned
- 2011-06-20 SG SG2012094777A patent/SG186445A1/en unknown
- 2011-06-20 BR BR112012033193A patent/BR112012033193A2/en not_active IP Right Cessation
- 2011-06-20 CN CN2011800312953A patent/CN102971487A/en active Pending
- 2011-06-20 EP EP11797684.5A patent/EP2585680A1/en not_active Withdrawn
- 2011-06-20 WO PCT/IB2011/001391 patent/WO2011161517A1/en active Application Filing
- 2011-06-20 US US13/806,572 patent/US20130164152A1/en not_active Abandoned
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Publication number | Priority date | Publication date | Assignee | Title |
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US5746435A (en) * | 1994-09-30 | 1998-05-05 | Arbuckle; Donald P. | Dual seal barrier fluid leakage control method |
US5906374A (en) * | 1994-09-30 | 1999-05-25 | Arbuckle; Donald P. | Dual seal barrier fluid leakage control method utilizing linearly displaceable member |
WO1998053182A1 (en) * | 1997-05-20 | 1998-11-26 | Westinghouse Government Services Company Llc | Sub-sea pumping system and associated method |
US6158967A (en) * | 1998-08-26 | 2000-12-12 | Texas Pressure Systems, Inc. | Barrier fluid seal, reciprocating pump and operating method |
WO2008115064A1 (en) * | 2006-10-13 | 2008-09-25 | Framo Engineering As | Sealing system device |
US20100150740A1 (en) * | 2006-10-13 | 2010-06-17 | Arne Veland | Sealing system device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015127524A1 (en) * | 2014-02-26 | 2015-09-03 | Fmc Technologies Do Brasil Ltda | Installation for use of control fluid as barrier fluid for electric motors coupled to subsea pumps |
US20170009772A1 (en) * | 2014-02-26 | 2017-01-12 | Fmc Technologies Do Brasil Ltda | Installation for using control fluid as barrier fluid for electric motors coupled to subsea pumps |
WO2016048163A1 (en) * | 2014-09-26 | 2016-03-31 | Aker Subsea As | High pressure barrier fluid system for subsea pumps and compressors |
WO2016083196A1 (en) | 2014-11-24 | 2016-06-02 | Vetco Gray Scandinavia As | Method for regulation of a differential pressure across a seal and associated system |
WO2017064274A1 (en) | 2015-10-15 | 2017-04-20 | Aker Solutions As | Subsea barrier fluid system |
US11053944B2 (en) | 2015-10-15 | 2021-07-06 | Aker Solutions As | Subsea barrier fluid system |
WO2021158118A1 (en) * | 2020-02-06 | 2021-08-12 | Waterise As | Subsea motor and pump assembly and its use in a subsea desalination plant |
Also Published As
Publication number | Publication date |
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CN102971487A (en) | 2013-03-13 |
NO332973B1 (en) | 2013-02-11 |
NO20100903A1 (en) | 2011-12-23 |
BR112012033193A2 (en) | 2016-12-06 |
EP2585680A1 (en) | 2013-05-01 |
US20130164152A1 (en) | 2013-06-27 |
SG186445A1 (en) | 2013-01-30 |
AU2011268631A1 (en) | 2013-02-07 |
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