EP2596252A1 - Method and device for treatment of liquid in a hydraulic system - Google Patents

Method and device for treatment of liquid in a hydraulic system

Info

Publication number
EP2596252A1
EP2596252A1 EP11809924.1A EP11809924A EP2596252A1 EP 2596252 A1 EP2596252 A1 EP 2596252A1 EP 11809924 A EP11809924 A EP 11809924A EP 2596252 A1 EP2596252 A1 EP 2596252A1
Authority
EP
European Patent Office
Prior art keywords
treatment device
liquid
circulation pump
treatment
hydraulic
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.)
Granted
Application number
EP11809924.1A
Other languages
German (de)
French (fr)
Other versions
EP2596252A4 (en
EP2596252B1 (en
Inventor
Erling Iversen
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.)
Mera AS
Original Assignee
Mera 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 Mera AS filed Critical Mera AS
Publication of EP2596252A1 publication Critical patent/EP2596252A1/en
Publication of EP2596252A4 publication Critical patent/EP2596252A4/en
Application granted granted Critical
Publication of EP2596252B1 publication Critical patent/EP2596252B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
    • E21B19/004—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform
    • E21B19/006—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform including heave compensators
    • 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

Definitions

  • This invention relates to a method for treatment of liquid in a hydraulic system. More particularly it concerns a method for treatment of liquid under high pressure, in a hydraulic installation comprising at least a hydraulic cylinder and an accumulator.
  • the invention also comprises a device for performing the method.
  • High pressure means, in this context, a pressure above 140 bar.
  • the object of the invention is to remedy or reduce at least one of the drawbacks of the prior art .
  • a method for treatment of liquid under high pressure in a hydraulic installation comprising at least a hydraulic cylinder and an accumulator, and wherein the method is characterized in that it comprises:
  • the treatment device is preferably constituted by a unit being positioned at the hydraulic installation.
  • the treatment device is connected to complementary fitting connections on the hydraulic installation, typically by means of so-called quick release couplings.
  • a first connection for tapping liquid from the hydraulic installation is spaced apart from a second connection for return of liquid to the hydraulic installation. The intention is to ensure that a relatively large portion of the liquid in the hydraulic installation is included in the treatment.
  • the liquid is led under high pressure into the treatment device by opening a first and a second valve in the respective connections. These or other valves may have additional functions such as flow control . Circulation of the liquid is commenced by starting up a motor driving the circulation pump. The motor is most often driven hydraulically because the treatment device during operation is in an area that may be explosive.
  • the method may further comprise monitoring of the circulation pump shaft penetration regarding leaks. Due to the circulation of fluid being carried out under high pressure, a leak will not stop even if the circulation pump is stopped. By monitoring and warning a barrier may be activated, for example closing of the first and the second valves.
  • the method typically comprises cleaning of the liquid.
  • the method may be performed by means of a treatment device for treatment of liquid under high pressure in a hydraulic installation where the hydraulic installation comprises at least a hydraulic cylinder and an accumulator, and where the treatment device is characterized in that it comprises a circulation pump where the circulation pump shaft penetration outside is enclosed by a tight bell.
  • the bell is arranged to seal against discharge of liquid under high pressure if the pump shaft seal should fail.
  • the bell may constitute an attachment between the circulation pump and a motor, as the bell may enclose a shaft coupling between the circulation pump and the motor.
  • the bell may be provided with a connection for monitoring of pressure inside the bell.
  • the treatment device may advantageously be provided with a preferably compressed air driven make-up pump arranged to be able to replenish the hydraulic installation at high pressure both during circulation and when circulation is not taking place .
  • the cylinder By closing off a particular cylinder the cylinder may be pressure tested by means of the treatment device whereby testing of the cylinder stuffing box and calibration of a pressure meter connected to the cylinder may take place even if the accumulator is not connected.
  • the method and the device according to the invention makes it possible to treat, typically cleanse, liquid in a hydraulic installation in operation under high pressure without having to stop the operation itself in parts of the installation.
  • the treatment device circulation installation is further safeguarded against discharge of liquid under high pressure even if the circulation pump shaft seal should fail.
  • Fig. 1 shows a simplified connection diagram of a treatment device according to the invention where the treatment device is connected to a hydraulic installation;
  • Fig. 2 shows a circulation pump with motor where the circulation pump and the motor are connected by means of a bell according to the invention
  • Fig. 3 shows to a larger scale a section II -II of the bell in Fig. 2.
  • the reference numeral 1 indicates a hydraulic installation 1 connected to a treatment device 2 for liquid.
  • the hydraulic installation 1 comprises a hydraulic cylinder 4 communicating with accumulators 6 via an accumulator pipe 8.
  • a first connection 10 for discharge of liquid from the hydraulic installation 1 is connected to the accumulator pipe 8.
  • the first connection 10 comprises a first valve 12 and a first part of a quick-release coupling 14.
  • a second connection 16 for return of liquid from the hydraulic installation 1 is connected to the hydraulic cylinder.
  • the second connection 16 comprises a second valve 18 and a first part of a quick release coupling 20.
  • connection points for the first and the second connections 10, 16 to the hydraulic installation 1 are in Fig. 1 purely illustrative and may be located in any suitable place favorable for circulation of liquid and the desired treatment effect .
  • the treatment device 2 comprises a circulation pump 22 connected to a hydraulic motor 24 by means of a tight bell 26.
  • the circulation pump 22 is releasably connected to the first connection 10 by means of a supply pipe 28 and a second part of the quick release coupling 14.
  • the circulation pump 22 outlet is connected to a filter 30 via a pump pipe 32.
  • the filter 30 is connected to the second connection 16 via a return pipe 34 and a second part of the quick release coupling 20.
  • the motor 24 is connected to and driven by a not shown hydraulic unit via pipe 36.
  • a pressure meter 38 arranged to be able to give a signal is connected to the bell 26 via a metering pipe 40.
  • the treatment device 2 normally comprises a series of not shown, per se known, meters such as pressure meters, flow meters and temperature meters. All components exposed to pressure from the hydraulic installation 1 are dimensioned to stand this pressure with a relatively large margin of safety.
  • the bell 26 comprises a bell housing 42 attached to a footing 44 by means of not shown bolt connections.
  • a motor attachment plate 46 is threaded into one end portion of the bell housing 42, while a circulation pump attachment plate 48 is threaded into the opposing end portion of the bell housing 42.
  • the motor attachment plate 46 is provided with a boring 50 therethrough and on its outside allocated a boring 52 both complementary fitting the motor 24.
  • the motor attachment plate 46 is attached to the motor 24 by means of bolt connections 54.
  • the circulation pump attachment plate 48 is provided with a boring 56 therethrough for the circulation pump 22 shaft 58, as the circulation pump attachment plate 48 is attached to the circulation pump 22 by means of bolt connections 60.
  • the bore 56 constitutes together with a not shown shaft bore in the circulation pump 22 a shaft penetration 57.
  • a shaft coupling 62 connects the shaft 58 with a motor shaft 64, as the shafts 58, 64 are concentric.
  • a threaded bore 66 in the bell housing fits the metering pipe 40.
  • An air driven make-up pump 70 is arranged in the treatment device.
  • the make-up pump 70 is connected to a not shown reservoir via a reservoir pipe 72 and to the pump pipe 32 via a feed pipe 74 and a check valve 76. Compressed air is supplied to the make-up pump 70 for operation via a pipe 78.
  • the makeup pump 70 is arranged to be able to replenish the hydraulic installation 1 both when circulation is taking place and when circulation is not taking place.
  • the make-up pump 70 may also be used to build up pressure for pressure testing and for pressurizing at calibration.
  • the treatment device 2 When the liquid in the hydraulic installation 1 is to be treated, the treatment device 2 is connected to the first and the second connections 10, 16 by means of the quick release couplings 14 respectively 20.
  • the first valve 12 and the second valve 18 are opened whereby liquid under high pressure flows into the treatment device 2.
  • the motor 24 is started whereby the circulation pump 22 circulates liquid from the accumulator pipe 8 via the filter 30 and back to the hydraulic cylinder 4.

Abstract

A method and device for treatment of liquid under high pressure in a hydraulic installation (1) comprising at least a hydraulic cylinder (4) and an accumulator (6) where the method comprises: - connecting a treatment device (2) for liquid to the hydraulic installation (1); - directing liquid under high pressure to the treatment device (2); - circulating liquid by means of a circulation pump (22) via a filter (30) under high pressure from the hydraulic installation (1) and back to the hydraulic installation (1); and - disconnecting the treatment device (2) from the hydraulic installation (1) subsequent to completed treatment.

Description

METHOD AND DEVICE FOR TREATMENT OF LIQUID IN A HYDRAULIC SYSTEM
This invention relates to a method for treatment of liquid in a hydraulic system. More particularly it concerns a method for treatment of liquid under high pressure, in a hydraulic installation comprising at least a hydraulic cylinder and an accumulator. The invention also comprises a device for performing the method.
High pressure means, in this context, a pressure above 140 bar.
In hydraulic installations used for power compensation, typically to maintain tension in a riser on a floating installation for petroleum recovery, liquid is flowing back and forth between a hydraulic cylinder and a gas filled accumulator under high pressure. Installations of this type, often described as heave compensating installations, constitute a vital part of the installation equipment and must therefore fulfill existing government requirements.
During operation the liquid is polluted, among other things, by wear particles. Such polluted liquid leads to increased wear in the cylinder. The limit value for acceptable degree of pollution of such liquid, is relatively low, thus the liquid has to be replaced relatively often. The object of the invention is to remedy or reduce at least one of the drawbacks of the prior art .
The object is achieved by the features disclosed in the below description and in the subsequent claims.
There is provided a method for treatment of liquid under high pressure in a hydraulic installation comprising at least a hydraulic cylinder and an accumulator, and wherein the method is characterized in that it comprises:
- connecting a treatment device for liquid to the hydraulic installation;
- directing the liquid under high pressure to the treatment device ;
- circulating liquid by means of a circulating pump via a filter under high pressure, from the hydraulic installation and back to the hydraulic installation; and
- disconnecting the treatment device from the hydraulic installation subsequent to completed treatment.
The treatment device is preferably constituted by a unit being positioned at the hydraulic installation. The treatment device is connected to complementary fitting connections on the hydraulic installation, typically by means of so-called quick release couplings. A first connection for tapping liquid from the hydraulic installation is spaced apart from a second connection for return of liquid to the hydraulic installation. The intention is to ensure that a relatively large portion of the liquid in the hydraulic installation is included in the treatment.
The liquid is led under high pressure into the treatment device by opening a first and a second valve in the respective connections. These or other valves may have additional functions such as flow control . Circulation of the liquid is commenced by starting up a motor driving the circulation pump. The motor is most often driven hydraulically because the treatment device during operation is in an area that may be explosive.
Subsequent to completed treatment the circulation pump is stopped, the valves at the connections are closed and the treatment device is disconnected from the hydraulic installation.
The method may further comprise monitoring of the circulation pump shaft penetration regarding leaks. Due to the circulation of fluid being carried out under high pressure, a leak will not stop even if the circulation pump is stopped. By monitoring and warning a barrier may be activated, for example closing of the first and the second valves.
The method typically comprises cleaning of the liquid.
The method may be performed by means of a treatment device for treatment of liquid under high pressure in a hydraulic installation where the hydraulic installation comprises at least a hydraulic cylinder and an accumulator, and where the treatment device is characterized in that it comprises a circulation pump where the circulation pump shaft penetration outside is enclosed by a tight bell.
The bell is arranged to seal against discharge of liquid under high pressure if the pump shaft seal should fail.
The bell may constitute an attachment between the circulation pump and a motor, as the bell may enclose a shaft coupling between the circulation pump and the motor.
The bell may be provided with a connection for monitoring of pressure inside the bell. The treatment device may advantageously be provided with a preferably compressed air driven make-up pump arranged to be able to replenish the hydraulic installation at high pressure both during circulation and when circulation is not taking place .
By closing off a particular cylinder the cylinder may be pressure tested by means of the treatment device whereby testing of the cylinder stuffing box and calibration of a pressure meter connected to the cylinder may take place even if the accumulator is not connected.
The method and the device according to the invention makes it possible to treat, typically cleanse, liquid in a hydraulic installation in operation under high pressure without having to stop the operation itself in parts of the installation. The treatment device circulation installation is further safeguarded against discharge of liquid under high pressure even if the circulation pump shaft seal should fail.
In the following is described an example of a preferred method and embodiment illustrated in the accompanying drawings, wherein :
Fig. 1 shows a simplified connection diagram of a treatment device according to the invention where the treatment device is connected to a hydraulic installation;
Fig. 2 shows a circulation pump with motor where the circulation pump and the motor are connected by means of a bell according to the invention; and
Fig. 3 shows to a larger scale a section II -II of the bell in Fig. 2. In the drawings the reference numeral 1 indicates a hydraulic installation 1 connected to a treatment device 2 for liquid.
The hydraulic installation 1 comprises a hydraulic cylinder 4 communicating with accumulators 6 via an accumulator pipe 8.
A first connection 10 for discharge of liquid from the hydraulic installation 1 is connected to the accumulator pipe 8. The first connection 10 comprises a first valve 12 and a first part of a quick-release coupling 14.
A second connection 16 for return of liquid from the hydraulic installation 1 is connected to the hydraulic cylinder. The second connection 16 comprises a second valve 18 and a first part of a quick release coupling 20.
The connection points for the first and the second connections 10, 16 to the hydraulic installation 1 are in Fig. 1 purely illustrative and may be located in any suitable place favorable for circulation of liquid and the desired treatment effect .
The treatment device 2 comprises a circulation pump 22 connected to a hydraulic motor 24 by means of a tight bell 26.
The circulation pump 22 is releasably connected to the first connection 10 by means of a supply pipe 28 and a second part of the quick release coupling 14.
The circulation pump 22 outlet is connected to a filter 30 via a pump pipe 32. The filter 30 is connected to the second connection 16 via a return pipe 34 and a second part of the quick release coupling 20.
The motor 24 is connected to and driven by a not shown hydraulic unit via pipe 36. A pressure meter 38 arranged to be able to give a signal is connected to the bell 26 via a metering pipe 40.
The treatment device 2 normally comprises a series of not shown, per se known, meters such as pressure meters, flow meters and temperature meters. All components exposed to pressure from the hydraulic installation 1 are dimensioned to stand this pressure with a relatively large margin of safety.
The bell 26 comprises a bell housing 42 attached to a footing 44 by means of not shown bolt connections. A motor attachment plate 46 is threaded into one end portion of the bell housing 42, while a circulation pump attachment plate 48 is threaded into the opposing end portion of the bell housing 42.
The motor attachment plate 46 is provided with a boring 50 therethrough and on its outside allocated a boring 52 both complementary fitting the motor 24. The motor attachment plate 46 is attached to the motor 24 by means of bolt connections 54.
The circulation pump attachment plate 48 is provided with a boring 56 therethrough for the circulation pump 22 shaft 58, as the circulation pump attachment plate 48 is attached to the circulation pump 22 by means of bolt connections 60. The bore 56 constitutes together with a not shown shaft bore in the circulation pump 22 a shaft penetration 57.
A shaft coupling 62 connects the shaft 58 with a motor shaft 64, as the shafts 58, 64 are concentric.
A threaded bore 66 in the bell housing fits the metering pipe 40.
Seals 68 shown here in the form of O-rings, seal between respectively the motor 24, the motor attachment plate 46, the bell housing 42, the circulation pump attachment plate 48 and the circulation pump 22.
An air driven make-up pump 70 is arranged in the treatment device. The make-up pump 70 is connected to a not shown reservoir via a reservoir pipe 72 and to the pump pipe 32 via a feed pipe 74 and a check valve 76. Compressed air is supplied to the make-up pump 70 for operation via a pipe 78. The makeup pump 70 is arranged to be able to replenish the hydraulic installation 1 both when circulation is taking place and when circulation is not taking place. The make-up pump 70 may also be used to build up pressure for pressure testing and for pressurizing at calibration.
When the liquid in the hydraulic installation 1 is to be treated, the treatment device 2 is connected to the first and the second connections 10, 16 by means of the quick release couplings 14 respectively 20.
The first valve 12 and the second valve 18 are opened whereby liquid under high pressure flows into the treatment device 2. The motor 24 is started whereby the circulation pump 22 circulates liquid from the accumulator pipe 8 via the filter 30 and back to the hydraulic cylinder 4.
After completed treatment the motor 24 is stopped and the treatment device is disconnected from the hydraulic installation in a corresponding manner to that mentioned above, but in the opposite order.

Claims

P a t e n t c l a i m s
1. A method for treatment of liquid under high pressure in a hydraulic installation (1) comprising at least a hydraulic cylinder (4) and an accumulator (6) , c h a r a c t e r i z e d i n that the method comprises:
- connecting a treatment device (2) for liquid to the hydraulic installation (1) ;
- directing liquid under high pressure to the treatment device (2) ;
- circulating liquid from the area having high pressure by means of a circulation pump (22) via a filter (30) under high pressure from the hydraulic installation (1) and back to the hydraulic installation (1) ; and
- disconnecting the treatment device (2) from the hydraulic installation (1) subsequent to completed treatment .
2. A method according to claim 1, c h a r a c t e r i z e d i n that the method further comprises monitoring the circulation pump (22) shaft penetration (57) as regards leaks .
3. A method according to claim 1, c h a r a c t e r i z e d i n that the method comprises cleaning of the liquid.
4. A treatment device (2) for treatment of liquid under high pressure in a hydraulic installation (1) where the hydraulic installation (1) comprises at least a hydraulic cylinder (4) and an accumulator (6), c h a r a c t e r i z e d i n that the treatment device (2) comprises a circulation pump (22) where the circulation pump (22) shaft penetration (57) outside is enclosed by a tight bell (26) .
5. A treatment device (2) according to claim 4, c h a r a c t e r i z e d i n that the bell (26) constitutes an attachment between the circulation pump (22) and a motor (24) .
6. A treatment device (2) according to claim 4, c h a r a c t e r i z e d i n that the bell (26) encloses a shaft coupling (62) between the circulation pump (22) and the motor (24) .
7. A treatment device (2) according to claim 4, c h a r a c t e r i z e d i n that the bell (26) is provided with a bore (66) for connecting a pressure meter (38) .
8. A treatment device (2) according to claim 4, c h a r a c t e r i z e d i n that the treatment device (2) is provided with a make-up pump (70) .
EP11809924.1A 2010-07-20 2011-07-15 Method and device for treatment of liquid in a hydraulic system Active EP2596252B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20101032A NO336448B1 (en) 2010-07-20 2010-07-20 Method and apparatus for treating fluid in a hydraulic power compensation plant
PCT/NO2011/000206 WO2012011819A1 (en) 2010-07-20 2011-07-15 Method and device for treatment of liquid in a hydraulic system

Publications (3)

Publication Number Publication Date
EP2596252A1 true EP2596252A1 (en) 2013-05-29
EP2596252A4 EP2596252A4 (en) 2016-04-13
EP2596252B1 EP2596252B1 (en) 2019-09-25

Family

ID=45497051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11809924.1A Active EP2596252B1 (en) 2010-07-20 2011-07-15 Method and device for treatment of liquid in a hydraulic system

Country Status (3)

Country Link
EP (1) EP2596252B1 (en)
NO (1) NO336448B1 (en)
WO (1) WO2012011819A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103527563B (en) * 2013-09-30 2015-11-18 天津工程机械研究院 A kind of testing apparatus of oil hydraulic motor starting performance and test method
NO20140477A1 (en) * 2014-04-11 2015-10-12 Mera As System and method for status monitoring of an on-site hydraulic system
CN104533883B (en) * 2014-12-30 2017-02-22 中国人民解放军理工大学 Hydraulic diagnostic device simulating fault of hydraulic system
CN107387494A (en) * 2017-06-08 2017-11-24 镇江四联机电科技有限公司 A kind of aggregative model hydraulic test bench
CN109026845B (en) * 2017-06-12 2020-06-16 上海梅山钢铁股份有限公司 Oil leakage detection and protection device for fan stationary blade adjusting hydraulic device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7217850U (en) * 1971-05-15 1972-08-03 Weir Pumps Ltd PUMP ASSEMBLY
DE2529458C2 (en) * 1975-07-02 1982-11-18 Sihi Gmbh & Co Kg, 2210 Itzehoe Centrifugal pump unit
FR2485646A1 (en) * 1980-06-30 1981-12-31 Seh Electro Hydraulique Coupling between electric motor and centrifugal pump - uses running in bearings in coupling housing which bolts between motor and pump case
DE3321380A1 (en) * 1983-06-14 1984-12-20 Klöckner-Humboldt-Deutz AG, 5000 Köln Gear machine for self-lubricating pumping media
DE3724276A1 (en) * 1987-07-22 1989-02-02 Hans Hucke DEVICE FOR PREVENTING LEAKS ON A COMPONENT HAVING A SEALED FLUID CHAMBER
RU2059901C1 (en) * 1994-02-08 1996-05-10 Акционерное общество "Производственно-конструкторский центр "МОРЖ" Unit for sampling, cleaning and output of working fluid while sets are attended
DE19515094C2 (en) * 1994-05-04 1996-07-18 Friatec Rheinhuette Gmbh & Co Emergency shaft seal for a pump for dangerous and / or aggressive fluids
DE19619028C2 (en) * 1996-05-11 1998-03-19 Daimler Benz Aerospace Airbus Device for cleaning a hydraulic fluid
DK172595B1 (en) * 1997-03-18 1999-02-08 Ocean Team Scandinavia As Method for internal cleaning of a pipe system in a fluid system and plant for use in the method
NO327932B1 (en) * 2006-10-27 2009-10-26 Fmc Kongsberg Subsea As Teleskopskjot

Also Published As

Publication number Publication date
NO336448B1 (en) 2015-08-24
EP2596252A4 (en) 2016-04-13
EP2596252B1 (en) 2019-09-25
WO2012011819A1 (en) 2012-01-26
NO20101032A1 (en) 2012-01-23

Similar Documents

Publication Publication Date Title
EP2596252B1 (en) Method and device for treatment of liquid in a hydraulic system
RU2572878C2 (en) Trailer with manifold with several hinged layouts of bends
RU2468202C2 (en) Control system
SA111320753B1 (en) Managed Pressure Drilling Apparatus
CN102966641B (en) Hydraulic system high-low pressure is combined online circulation flushing and pressure testing device
AU2011268629B2 (en) A compensated barrier and lubrication fluids pressure regulation system for a subsea motor and pump module
BR102012029292B1 (en) methods of cementing a tubular column in a well, an underwater well and a well that extends from a wellhead
US11460050B2 (en) Pressure exchanger manifolding
CN202073872U (en) Driving experiment device of hydraulic motor for airplane generator
CN112814662A (en) Stratum fracture leaking stoppage simulation device and simulation system
US20080203724A1 (en) Swivel Device
NO20161960A1 (en) Method and apparatus for continuosly controlling a well flow rate
US10156132B2 (en) Method and system for injecting slurry using two tanks with valve timing overlap
CN109507097B (en) Load-holding erosion test device for concrete bias column
RU2632741C2 (en) Device for barrier fluid supply to double mechanical seal of multiphase pumping unit
US20180002996A1 (en) Apparatus for Switching off and Deviating A Circulating Liquid Flow without Water Hammering
RU2682775C1 (en) Valve cluster
CN108916020A (en) Hydraulic pump pressure maintaining automatic detection system
US10156237B2 (en) Method and system for injecting slurry using concentrated slurry pressurization
US9644449B2 (en) Geothermal integrated expansion spool assembly
RU166288U1 (en) STAND FOR TESTING AND PREPARATION OF DRILLING SWIVELS
KR200389340Y1 (en) Impact water pressure testing apparatus for building equipment's pipe laying
AU2014232774B2 (en) Purging fluid circuits in wellbore control devices
PL239435B1 (en) System for control of cyclic supply to hydraulic actuators
RU2354808C2 (en) Device for fire prevention in wellhead in case of surface pipeline damage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20130123

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
R17P Request for examination filed (corrected)

Effective date: 20130123

RA4 Supplementary search report drawn up and despatched (corrected)

Effective date: 20160314

RIC1 Information provided on ipc code assigned before grant

Ipc: F15B 19/00 20060101ALI20160308BHEP

Ipc: F15B 21/04 20060101AFI20160308BHEP

Ipc: F04B 9/02 20060101ALI20160308BHEP

Ipc: E21B 19/00 20060101ALI20160308BHEP

Ipc: F04B 53/16 20060101ALI20160308BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20181005

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190528

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1184083

Country of ref document: AT

Kind code of ref document: T

Effective date: 20191015

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011062343

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191226

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1184083

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200127

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200224

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011062343

Country of ref document: DE

PG2D Information on lapse in contracting state deleted

Ref country code: IS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200126

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20200626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602011062343

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200715

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200715

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200715

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210202

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200715

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925