EP2136085A2 - Intensificateurs hydrauliques - Google Patents
Intensificateurs hydrauliques Download PDFInfo
- Publication number
- EP2136085A2 EP2136085A2 EP09160204A EP09160204A EP2136085A2 EP 2136085 A2 EP2136085 A2 EP 2136085A2 EP 09160204 A EP09160204 A EP 09160204A EP 09160204 A EP09160204 A EP 09160204A EP 2136085 A2 EP2136085 A2 EP 2136085A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- low pressure
- cylinder
- chamber
- high pressure
- 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.)
- Withdrawn
Links
- 239000012530 fluid Substances 0.000 claims abstract description 52
- 230000000712 assembly Effects 0.000 claims description 15
- 238000000429 assembly Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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
- E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
- E21B33/0355—Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
- F04B9/105—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
-
- 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
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
Definitions
- the present invention relates to hydraulic intensifiers.
- Hydraulic intensifiers are devices that generate high hydraulic pressure from a low pressure source. They are, typically, employed in subsea wells such as hydrocarbon production or injection wells, to provide a source of high pressure hydraulic fluid for the operation of hydraulically actuated devices, such as valves and flow control chokes. Such wells are, typically, supplied with low pressure hydraulic fluid, via an umbilical, which can be in excess of 100 Km in length The supply of high pressure fluid via the umbilical is not favoured by well operators, as a high pressure feed within the umbilical, needing a much greater wall thickness than usual, results in much greater umbilical and handling costs.
- Intensifiers use relatively large cross-sectional area pistons, operating at low pressure, to actuate small cross-sectional area pistons, to generate high pressures, thus utilising the mechanical advantage of the ratios of the piston cross-sectional areas to 'intensify' the pressure.
- two sets of pistons are utilised which operate alternately to sustain a continuous flow of fluid.
- the alternate operation of the piston sets is controlled by a complicated arrangement of valves and springs and since these and the piston sets are integrated into one assembly, current hydraulic intensifiers are complicated devices, which are difficult to manufacture and thus of high cost. Furthermore, they are heavy devices, typically 37 Kg, and are prone to a multiplicity of problems which include failure of 'slipper' seals and changeover valves, sensitivity to contamination and a tendency to 'lock-up' due to pressure in their return lines. Repair requires the complete removal and strip down of the assembly which is also expensive, and new designs require full approval testing before they can be employed.
- GB-A-2 275 969 discloses a hydraulic intensifier comprising two sets of high and low pressure pistons for the compression of low pressure liquid, the piston sets being coupled together by the slider of a pilot valve so as to act in mutual opposition, the low pressure pistons of the piston sets being driven by low pressure liquid supplied by way of a changeover valve and the changeover valve being changed over at the end of each stroke of the pilot valve to reverse the motion of the piston sets, the changeover valve being effective to maintain a supply of low pressure liquid to drive the piston sets throughout the stroke of the pilot valve.
- a hydraulic intensifier comprising:
- the hydraulic intensifier comprises:
- a hydraulic intensifier comprising:
- low pressure hydraulic fluid could be supplied to the chambers of the high pressure cylinders via respective ones of first and second check valves, said chambers of the high pressure cylinders being coupled with said high pressure output via respective ones of third and fourth check valves.
- a hydraulic intensifier according to the invention could comprise means coupled to said electronic means for sensing pressure of hydraulic fluid at said high pressure output and causing the or each directional control valve not to supply hydraulic fluid to the chamber or chambers of the low pressure cylinder or cylinders in response to the sensed pressure being at a required value.
- Said electronic means could comprise a bistable device.
- a hydraulic intensifier according to the invention could comprise a hydraulic accumulator coupled with said high pressure output.
- a hydraulic intensifier according to the invention could be one for use in a subsea well.
- said electronic means could be provided via a subsea electronics module for a subsea well and/or the or each directional control value could be provided by a directional control valve of a subsea control module for a subsea well.
- a method of producing high pressure hydraulic fluid comprising:
- the method comprises:
- the present invention enables a modular hydraulic intensifier which utilises standard approved directional control valves (DCVs) which are controlled electronically, in conjunction with piston sets sealed with proven standard approved seals.
- DCVs directional control valves
- By being modular, such an intensifier can be serviced by the replacement of individual components, most of which are standard devices which will already be held as spares for the rest of the well control system.
- FIG. 1 The single figure of the accompanying drawing shows, diagrammatically, a hydraulic intensifier for a subsea hydrocarbon extraction or injection well.
- Two identical piston and cylinder assemblies 1 and 2 are shown in sectioned view, whereas the rest of the hydraulic circuitry is shown schematically.
- Each piston assembly has a large cross-sectional area piston 3 or 3' in the chamber 4 or 4' of a low pressure cylinder (sealed by standard approved sealing rings 5 and 6 or 5' and 6') and coupled to a smaller cross-sectional area piston 7 or 7' in the chamber 8 or 8' of a high pressure cylinder (sealed with an approved sealing ring 9 or 9').
- each low pressure cylinder is fitted with a buffer 10 or 10', manufactured from a resilient, hydraulic fluid resistant material, to minimise the impact of a fast-returning piston.
- the operation of each of the piston assemblies 1 and 2 is controlled, alternately, by respective ones of standard solenoid-operated directional control valves (DCVs) 11 and 12, each of which is supplied by hydraulic fluid from a low pressure (LP) source 13, typically via the well umbilical.
- the solenoids of the DCVs 11 and 12 are electrically energised alternately from a dc power source switched by a bistable electronic device 14 such as a multivibrator and each DCV is coupled to the chamber 4 or 4' of the respective low pressure cylinder via a respective restrictor 15 or 16.
- Source 13 is also connected to the chambers 8 and 8' of the high pressure cylinders via check valves 17 and 18 respectively. Also, each of the chambers 8 and 8' is connected to a high pressure (HP) intensifier output line 19 via check valves 20 and 21 respectively, reference numeral 22 designating a hydraulic accumulator connected with line 19 and reference numeral 23 designating a pressure switch connected to device 14. Reference numeral 24 designates a return line for excess fluid.
- HP high pressure
- the mode of operation of the intensifier is as follows.
- low pressure hydraulic fluid from the source 13 primes the system and additionally provides a continuous supply of hydraulic fluid to the chambers 8 and 8' of the high pressure cylinders, via check valves 17 and 18 respectively.
- the solenoid of DCV 11 has been de-energised and that of DCV 12 has been energised so that piston 3' has been driven by low pressure fluid that entered chamber 4'.
- the solenoid of DCV 11 is energised by dc power, switched by the device 14, which allows low pressure hydraulic fluid to operate the piston 3 in the chamber 4 of the low pressure cylinder of the piston/cylinder assembly 1, the solenoid of DCV 12 being de-energised.
- the rate of movement of the piston 3 is controlled by the hydraulic restrictor 15.
- the resultant operation of piston 7 forces hydraulic fluid from the chamber 8 of the high pressure cylinder of assembly 1 at high pressure (HP), via check valve 20, to the intensifier output line 19 and into hydraulic accumulator 22.
- the check valve 17 will close to isolate the generated high pressure from the low pressure source.
- the piston 7' in the piston/cylinder assembly 2 will be forced downwards, with the hydraulic fluid transferring from the chamber 4' to the chamber 8' via the DCV 12, whose quiescent state is to switch flow via the return path as indicated by arrow 25, whilst at the same time the chamber 8' of the high pressure cylinder of assembly 2 is filled by the low pressure source 13 via the check valve 18.
- the transfer of fluid from chamber 4' to chamber 8', in the flow direction 25 minimises the consumption of hydraulic fluid.
- the device 14 will change state, thus removing dc power from the solenoid of DCV 11 and applying dc power to the solenoid of DCV 12, allowing the low pressure fluid to operate the piston 3' in the piston/cylinder assembly 2, so that high pressure fluid is pumped via check valve 21 to the intensifier output line 19 and to the accumulator 22.
- the DCVs 11 and 12 operate alternately, providing alternate pumping by the piston/cylinder assemblies 1 and 2 of high pressure fluid to the accumulator 22. Excess fluid from the process is exhausted via return line 24 as for existing intensifiers. The pumping process continues until the required high pressure is achieved at the accumulator 22 as sensed by pressure switch 23, which then switches off the dc power to the DCV solenoids via device 14.
- the device 14 may be dispensed with in a typical well installation, since control of the solenoids of the DCVs can be effected by the subsea control module (SCM) of the well.
- SCM subsea control module
- This module already houses DCVs and a subsea electronics module (SEM) to electronically control them, typically by an electronic processor driving power amplifiers to operate the DCV solenoids. It would therefore be a relatively simple addition to the SEM to incorporate the functions of the device 14 within the software of the SCM processor, and the necessary solenoid power drivers to the SCM.
- the intensifier DCVs could be housed in the SCM.
- the hydraulic accumulator 22 may not be necessary for some installations.
- the intensifier could use a single piston/cylinder arrangement.
- twin arrangement described provides redundancy in the event of a failure and is therefore generally the preferred option.
- the DCVs are standard-approved devices, a main advantage of using the same to control the intensifier being that they would not require an expensive test for type approval in a subsea well environment.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
- Actuator (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0811205A GB2461061A (en) | 2008-06-19 | 2008-06-19 | Subsea hydraulic intensifier with supply directional control valves electronically switched |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2136085A2 true EP2136085A2 (fr) | 2009-12-23 |
EP2136085A3 EP2136085A3 (fr) | 2010-06-30 |
Family
ID=39672519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09160204A Withdrawn EP2136085A3 (fr) | 2008-06-19 | 2009-05-14 | Intensificateurs hydrauliques |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090317267A1 (fr) |
EP (1) | EP2136085A3 (fr) |
AU (1) | AU2009202431A1 (fr) |
BR (1) | BRPI0901915A2 (fr) |
GB (1) | GB2461061A (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2995039A1 (fr) * | 2012-09-03 | 2014-03-07 | Emmanuel Desire Didier | Generateur de pression ou le surpresseur |
CN103670940A (zh) * | 2014-01-08 | 2014-03-26 | 洛阳飓鸿环保技术有限公司 | 一种能量转换型发电装置 |
WO2014144916A2 (fr) | 2013-03-15 | 2014-09-18 | Transocean Innovation Labs Ltd | Pression de suralimentation dans un système de puits sous-marin |
EP3722619A1 (fr) * | 2019-04-11 | 2020-10-14 | Piston Power s.r.o. | Agencement amplificateur de pression hydraulique |
EP3872353A1 (fr) * | 2020-02-26 | 2021-09-01 | Hydrosaar GmbH | Installation d'alimentation hydraulique pour un consommateur |
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US8225606B2 (en) | 2008-04-09 | 2012-07-24 | Sustainx, Inc. | Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression |
US20110266810A1 (en) | 2009-11-03 | 2011-11-03 | Mcbride Troy O | Systems and methods for compressed-gas energy storage using coupled cylinder assemblies |
WO2009126784A2 (fr) | 2008-04-09 | 2009-10-15 | Sustainx, Inc. | Systèmes et procédés de stockage et de récupération d’énergie à l’aide de gaz comprimé |
US7802426B2 (en) | 2008-06-09 | 2010-09-28 | Sustainx, Inc. | System and method for rapid isothermal gas expansion and compression for energy storage |
US8240140B2 (en) | 2008-04-09 | 2012-08-14 | Sustainx, Inc. | High-efficiency energy-conversion based on fluid expansion and compression |
US8474255B2 (en) | 2008-04-09 | 2013-07-02 | Sustainx, Inc. | Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange |
US20100307156A1 (en) | 2009-06-04 | 2010-12-09 | Bollinger Benjamin R | Systems and Methods for Improving Drivetrain Efficiency for Compressed Gas Energy Storage and Recovery Systems |
US8250863B2 (en) | 2008-04-09 | 2012-08-28 | Sustainx, Inc. | Heat exchange with compressed gas in energy-storage systems |
US8037678B2 (en) | 2009-09-11 | 2011-10-18 | Sustainx, Inc. | Energy storage and generation systems and methods using coupled cylinder assemblies |
US8677744B2 (en) | 2008-04-09 | 2014-03-25 | SustaioX, Inc. | Fluid circulation in energy storage and recovery systems |
US8448433B2 (en) | 2008-04-09 | 2013-05-28 | Sustainx, Inc. | Systems and methods for energy storage and recovery using gas expansion and compression |
US8359856B2 (en) | 2008-04-09 | 2013-01-29 | Sustainx Inc. | Systems and methods for efficient pumping of high-pressure fluids for energy storage and recovery |
US7958731B2 (en) | 2009-01-20 | 2011-06-14 | Sustainx, Inc. | Systems and methods for combined thermal and compressed gas energy conversion systems |
US8479505B2 (en) | 2008-04-09 | 2013-07-09 | Sustainx, Inc. | Systems and methods for reducing dead volume in compressed-gas energy storage systems |
WO2010105155A2 (fr) | 2009-03-12 | 2010-09-16 | Sustainx, Inc. | Systèmes et procédés destinés à améliorer le rendement de transmission pour le stockage d'énergie sous forme de gaz comprimé |
US8104274B2 (en) | 2009-06-04 | 2012-01-31 | Sustainx, Inc. | Increased power in compressed-gas energy storage and recovery |
BR112012016009A2 (pt) * | 2009-12-29 | 2016-08-16 | 3M Innovative Properties Co | sistema de filtração água em água com dispositivo de medicação de precisão |
US8171728B2 (en) | 2010-04-08 | 2012-05-08 | Sustainx, Inc. | High-efficiency liquid heat exchange in compressed-gas energy storage systems |
US8191362B2 (en) | 2010-04-08 | 2012-06-05 | Sustainx, Inc. | Systems and methods for reducing dead volume in compressed-gas energy storage systems |
US8234863B2 (en) | 2010-05-14 | 2012-08-07 | Sustainx, Inc. | Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange |
US8495872B2 (en) | 2010-08-20 | 2013-07-30 | Sustainx, Inc. | Energy storage and recovery utilizing low-pressure thermal conditioning for heat exchange with high-pressure gas |
EP2447545B1 (fr) | 2010-11-02 | 2015-01-07 | Vetco Gray Controls Limited | Intensificateurs haute pression |
US8578708B2 (en) | 2010-11-30 | 2013-11-12 | Sustainx, Inc. | Fluid-flow control in energy storage and recovery systems |
US20120297772A1 (en) | 2011-05-17 | 2012-11-29 | Mcbride Troy O | Systems and methods for efficient two-phase heat transfer in compressed-air energy storage systems |
WO2013106115A2 (fr) | 2011-10-14 | 2013-07-18 | Sustainx, Inc. | Gestion de volume mort dans des systèmes de stockage et de récupération d'énergie à gaz comprimé |
US9140090B2 (en) * | 2011-10-19 | 2015-09-22 | Shell Oil Company | Subsea pressure reduction system |
FI127687B (fi) * | 2012-03-20 | 2018-12-14 | Aalto Korkeakoulusaeaetioe | Adaptiivinen hydraulinen paineenkehitin |
US20140224498A1 (en) * | 2013-02-08 | 2014-08-14 | Oceaneering International, Inc. | System and Method to Improve Operation of Hydraulic Pump for Subsea Service |
CN103486097A (zh) * | 2013-10-10 | 2014-01-01 | 西安天宇重工有限公司 | 一种大型液压机的活塞式增压器 |
WO2015070114A1 (fr) * | 2013-11-08 | 2015-05-14 | Kmt Waterjet Systems Inc. | Système et commande de pompe à injection |
WO2016079251A1 (fr) * | 2014-11-21 | 2016-05-26 | Des S.R.L. | Multiplicateur de débit d'écoulement de fluide |
NO20160240A1 (en) * | 2016-02-12 | 2017-08-14 | Fmc Kongsberg Subsea As | Pump |
ES2734307T3 (es) * | 2017-03-03 | 2019-12-05 | Pistonpower Aps | Intensificador de presión hidráulica |
EP3369929B1 (fr) | 2017-03-03 | 2019-04-24 | PistonPower ApS | Amplificateur de pression |
EP3369927B1 (fr) | 2017-03-03 | 2019-04-24 | PistonPower ApS | Amplificateur de pression |
EP3369930B1 (fr) | 2017-03-03 | 2019-05-08 | PistonPower ApS | Intensificateur de pression hydraulique à double action |
WO2019160538A1 (fr) | 2018-02-14 | 2019-08-22 | Halliburton Energy Services, Inc. | Pompe d'intensification modifiable en intensité |
US11920579B2 (en) | 2018-10-05 | 2024-03-05 | Halliburton Energy Services, Inc. | Compact high pressure, high life intensifier pump system |
SG11202100692TA (en) | 2018-12-19 | 2021-02-25 | Halliburton Energy Services Inc | Methods and tools to deploy downhole elements |
WO2020216440A1 (fr) * | 2019-04-24 | 2020-10-29 | Volvo Construction Equipment Ab | Dispositif hydraulique, système hydraulique et machine de travail |
US11261697B2 (en) * | 2019-06-24 | 2022-03-01 | Onesubsea Ip Uk Limited | Modular hydraulic intensification system for downhole equipment function and chemical injection services |
WO2023048044A1 (fr) * | 2021-09-21 | 2023-03-30 | イーグル工業株式会社 | Circuit de circulation de fluide |
US11808289B2 (en) * | 2021-10-25 | 2023-11-07 | Deere & Company | Fluid pressure boost system and method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2275969A (en) | 1993-03-01 | 1994-09-14 | Europ Gas Turbines Ltd | Hydraulic intensifier |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT976905B (it) * | 1973-01-16 | 1974-09-10 | Consiglio Nazionale Ricerche | Apparato per fornire una pressione variaile nel tempo con elegge prestabilita |
DE3640236A1 (de) * | 1986-11-25 | 1988-06-01 | Rexroth Mannesmann Gmbh | Anordnung zum erzeugen hoher hydraulischer druecke |
JP3019671B2 (ja) * | 1993-05-27 | 2000-03-13 | ダイキン工業株式会社 | 超高圧制御装置 |
US6651749B1 (en) * | 2000-03-30 | 2003-11-25 | Halliburton Energy Services, Inc. | Well tool actuators and method |
-
2008
- 2008-06-19 GB GB0811205A patent/GB2461061A/en not_active Withdrawn
-
2009
- 2009-05-14 EP EP09160204A patent/EP2136085A3/fr not_active Withdrawn
- 2009-06-18 BR BRPI0901915-4A patent/BRPI0901915A2/pt not_active IP Right Cessation
- 2009-06-18 AU AU2009202431A patent/AU2009202431A1/en not_active Abandoned
- 2009-06-19 US US12/488,387 patent/US20090317267A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2275969A (en) | 1993-03-01 | 1994-09-14 | Europ Gas Turbines Ltd | Hydraulic intensifier |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2995039A1 (fr) * | 2012-09-03 | 2014-03-07 | Emmanuel Desire Didier | Generateur de pression ou le surpresseur |
WO2014144916A2 (fr) | 2013-03-15 | 2014-09-18 | Transocean Innovation Labs Ltd | Pression de suralimentation dans un système de puits sous-marin |
EP2971453A4 (fr) * | 2013-03-15 | 2017-05-10 | Transocean Sedco Forex Ventures Limited | Pression de suralimentation dans un système de puits sous-marin |
US10240430B2 (en) | 2013-03-15 | 2019-03-26 | Transocean Sedco Forex Ventures Limited | Supercharging pressure in a subsea well system |
CN103670940A (zh) * | 2014-01-08 | 2014-03-26 | 洛阳飓鸿环保技术有限公司 | 一种能量转换型发电装置 |
EP3722619A1 (fr) * | 2019-04-11 | 2020-10-14 | Piston Power s.r.o. | Agencement amplificateur de pression hydraulique |
EP3872353A1 (fr) * | 2020-02-26 | 2021-09-01 | Hydrosaar GmbH | Installation d'alimentation hydraulique pour un consommateur |
Also Published As
Publication number | Publication date |
---|---|
BRPI0901915A2 (pt) | 2010-04-13 |
EP2136085A3 (fr) | 2010-06-30 |
GB0811205D0 (en) | 2008-07-23 |
AU2009202431A1 (en) | 2010-01-14 |
GB2461061A (en) | 2009-12-23 |
US20090317267A1 (en) | 2009-12-24 |
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