EP3112582A1 - Installation pour utilisation de fluide de contrôle comme fluide barrière pour moteurs électriques accouplés à des pompes sous-marines - Google Patents
Installation pour utilisation de fluide de contrôle comme fluide barrière pour moteurs électriques accouplés à des pompes sous-marines Download PDFInfo
- Publication number
- EP3112582A1 EP3112582A1 EP15755450.2A EP15755450A EP3112582A1 EP 3112582 A1 EP3112582 A1 EP 3112582A1 EP 15755450 A EP15755450 A EP 15755450A EP 3112582 A1 EP3112582 A1 EP 3112582A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- installation
- control
- subsea
- barrier
- 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- Withdrawn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 title claims abstract description 116
- 230000004888 barrier function Effects 0.000 title claims abstract description 49
- 238000009434 installation Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000007667 floating Methods 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- 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
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
Definitions
- the present invention refers to the use of hydraulic control fluid for hydrocarbon producing equipment as barrier fluid for electric motors coupled to subsea pumps.
- This technology started to be used for producing hydrocarbons in onshore fields and with the development of offshore fields, its application was extended to subsea wells.
- pumps are also used for water injection in a production or discard reservoir.
- Submerged Centrifugal Pumps are the type of centrifugal pumps most used for producing petroleum. These pumps were initially designed for operating inside wells and for this reason are constructively long and slim. For operating, they do not need external supply of barrier fluid for the motor, since the barrier fluid is isolated and compensated regarding the process through a set of seals, isolating the pump motor.
- the electric motor housing is in communication with the surrounding environment, such that the internal cavity of the motor is filled with air.
- this pump has a sealing system in the shaft to avoid pumped fluid (process fluid) leakage to the environment.
- This seal is known as a mechanical, dynamic or rotating seal.
- the seal is not completely efficient, allowing a small leakage of the process fluid outside the pump housing.
- a method commonly used for controlling seal leakage is to eliminate the open space between the pump seal and the motor seal, in such way that leakages of process fluid resulting from the pump are obliged to enter into the motor housing.
- the motor itself is totally sealed from sea water surrounding the static seals.
- barrier fluid another fluid, called barrier fluid.
- the barrier fluid is separated from the process fluid by a set of seals that aims to equalize the pressures between the process and the barrier fluid, allows the expansion and contraction of the barrier fluid due to temperature variation and isolates the process fluid from the barrier fluid.
- the motor housing is filled with dielectric oil before installing the pump in its operation location and the continuous supply of a barrier fluid from an external source is not necessary.
- it is not necessary to control the pressure in active manner neither is the consumption of barrier fluid allowed for. This arrangement simplifies the operation, however it tends to reduce the equipment life.
- barrier fluid As there is a small but constant consumption of barrier fluid, there is a requirement for an external source to supply this fluid and also to provide the necessary pressure to ensure overpressure in the motor housing.
- the barrier fluid has also the objective of lubricating the pump and motor bearings, besides aiding in the thermal management of the equipment.
- the dielectric fluid is typically a mineral oil with low viscosity.
- the low viscosity is desirable for reducing losses resulting from the drag caused by the presence of the liquid in the space between the rotor and the stator.
- Mineral oil is chosen due to its good dielectric properties.
- barrier fluid To maintain the dielectric properties and ensure motor integrity, strict control of contamination by water, even in small proportions, is necessary. Furthermore, this oil has a great tendency to absorb atmospheric moisture which requires periodic testing to evaluate the water content of the stored fluid.
- the supply of barrier fluid to the submerged motor involves several aspects as described in the following:
- the pressurization unit or hydraulic power unit (HPU) is installed on this platform and dedicated to supply the barrier fluid, which is pressurized via electric pumps and accumulators.
- Control valves allow directing the fluid into the umbilical which in turn conducts the fluid to the subsea pump.
- barrier fluid according to the state of the art represented in Figure 1 comprises an installation composed of two hydraulic power units (HPU), two independent umbilicals and two independent connections to the platform, for the management of barrier fluid for electric motors coupled to subsea pumps and for the control fluid for the subsea system, respectively.
- HPU hydraulic power units
- umbilicals two independent umbilicals and two independent connections to the platform
- the installation represented in the Figure 2 object of the present invention, comprises a single hydraulic power unit (HPU), a single umbilical and, consequently, a single interface with the platform, for barrier fluid and for control fluid, using the same fluid for both purposes.
- HPU hydraulic power unit
- HPU hydraulic power unit
- MQC hydraulic couplings
- the implementation and use of the present invention comprises, notably, the reconfiguration of the subsea hydraulic distribution system. In specific cases, some modification to the HPU of the platform may be necessary, as for example, increases of the reservoirs, accumulators and pump flow rates.
- the pressure regulation inside the motor housing is performed by a set of regulating valves mounted on the pump, with the control HPU responsible for providing a constant pressure of fluid that is routed to the pump.
- a platform (10) there is a single hydraulic power unit (HPU) (5), provided with water-based hydraulic control fluid, which is connected by an umbilical (6) to the umbilical termination unit (9), where normally a control module (8) and valves and "chokes” (11) are interconnected via hydraulic coupling plates (MQC) (7).
- a hose (HFL) (12) is provided in such way as to perform the connection between the umbilical termination unit (9) and the electric motor (2) of the pump (1) via the plates (MQC) (7), in such manner that the water-based hydraulic control fluid may be also used as barrier fluid in the motor and centrifugal pump unit. This installation allows achieving an overpressure of the barrier fluid relative to the inlet (3) of the process fluid.
- the hydraulic circuit originating from the hydraulic power unit (5) is enough for simultaneously performing the hydraulic control of the subsea system (8, 11) and the supply of the barrier fluid for electric motor (2) of the subsea pump (1).
- the application of this installation according to the present invention will substantially reduce the cost and the implantation and operation complexity of a subsea pumping system.
- the electric motor was already designed to work immersed in a water based-fluid, contamination of barrier fluid by the process fluid or seawater will not result in motor failure due to short circuit
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR102014004572A BR102014004572A2 (pt) | 2014-02-26 | 2014-02-26 | utilização de fluido de controle como fluido de barreira para motores elétricos acoplado à bombas submarinas |
PCT/BR2015/050018 WO2015127524A1 (fr) | 2014-02-26 | 2015-02-25 | Installation pour utilisation de fluide de contrôle comme fluide barrière pour moteurs électriques accouplés à des pompes sous-marines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3112582A1 true EP3112582A1 (fr) | 2017-01-04 |
EP3112582A4 EP3112582A4 (fr) | 2017-12-06 |
Family
ID=54008067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15755450.2A Withdrawn EP3112582A4 (fr) | 2014-02-26 | 2015-02-25 | Installation pour utilisation de fluide de contrôle comme fluide barrière pour moteurs électriques accouplés à des pompes sous-marines |
Country Status (6)
Country | Link |
---|---|
US (1) | US20170009772A1 (fr) |
EP (1) | EP3112582A4 (fr) |
AU (1) | AU2015222707A1 (fr) |
BR (1) | BR102014004572A2 (fr) |
SG (1) | SG11201607131UA (fr) |
WO (1) | WO2015127524A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112443316A (zh) * | 2020-11-23 | 2021-03-05 | 大庆油田有限责任公司 | 液态co2测井隔离液预置工艺 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3120232C2 (de) * | 1981-05-21 | 1985-03-21 | Klein, Schanzlin & Becker Ag, 6710 Frankenthal | Druckausgleichseinrichtung für den Elektromotor eines gekapselten Kreiselpumpen-Motor-Aggregates |
US5795135A (en) * | 1995-12-05 | 1998-08-18 | Westinghouse Electric Corp. | Sub-sea pumping system and an associated method including pressure compensating arrangement for cooling and lubricating fluid |
US6059539A (en) * | 1995-12-05 | 2000-05-09 | Westinghouse Government Services Company Llc | Sub-sea pumping system and associated method including pressure compensating arrangement for cooling and lubricating |
US7481270B2 (en) * | 2004-11-09 | 2009-01-27 | Schlumberger Technology Corporation | Subsea pumping system |
WO2009137323A1 (fr) * | 2008-05-06 | 2009-11-12 | Fmc Technologies, Inc. | Système de balayage |
NO335355B1 (no) * | 2009-10-23 | 2014-12-01 | Framo Eng As | Trykkforsterkingssystem for undersjøiske verktøy |
NO332973B1 (no) * | 2010-06-22 | 2013-02-11 | Vetco Gray Scandinavia As | Trykkreguleringssystem for motor- og pumpebarrierefluider med differensialtrykkstyring |
NO332975B1 (no) * | 2010-06-22 | 2013-02-11 | Vetco Gray Scandinavia As | Kombinert trykkreguleringssystem og -enhet for barriere- og smorefluider for en undersjoisk motor- og pumpemodul |
NO332972B1 (no) * | 2010-06-22 | 2013-02-11 | Vetco Gray Scandinavia As | Trykkreguleringssystem for motor- og pumpebarrierefluider i en undersjoisk motor- og pumpemodul |
NO332974B1 (no) * | 2010-06-22 | 2013-02-11 | Vetco Gray Scandinavia As | Trykkutligningsbasert reguleringssystem for barriere- og smorefluider for en undersjoisk motor- og pumpemodul |
NO333696B1 (no) * | 2010-12-17 | 2013-08-26 | Vetco Gray Scandinavia As | System og fremgangsmate for momentan hydrostatisk drift av hydrodynamiske aksiallagre i en vertikal fluidfortregningsmodul |
NO335469B1 (no) * | 2011-09-29 | 2014-12-15 | Aker Subsea As | Pumpesystem for vanninjeksjon ved høyt trykk |
NO20120067A1 (no) * | 2012-01-23 | 2013-06-24 | Obs Tech As | Mellomlagringskammer |
WO2014003754A1 (fr) * | 2012-06-28 | 2014-01-03 | Fmc Technologies, Inc. | Nettoyage de puits de forage avec séparateur sous-marin |
-
2014
- 2014-02-26 BR BR102014004572A patent/BR102014004572A2/pt not_active IP Right Cessation
-
2015
- 2015-02-25 AU AU2015222707A patent/AU2015222707A1/en not_active Abandoned
- 2015-02-25 US US15/121,896 patent/US20170009772A1/en not_active Abandoned
- 2015-02-25 EP EP15755450.2A patent/EP3112582A4/fr not_active Withdrawn
- 2015-02-25 WO PCT/BR2015/050018 patent/WO2015127524A1/fr active Application Filing
- 2015-02-25 SG SG11201607131UA patent/SG11201607131UA/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112443316A (zh) * | 2020-11-23 | 2021-03-05 | 大庆油田有限责任公司 | 液态co2测井隔离液预置工艺 |
CN112443316B (zh) * | 2020-11-23 | 2022-11-04 | 大庆油田有限责任公司 | 液态co2测井隔离液预置工艺 |
Also Published As
Publication number | Publication date |
---|---|
EP3112582A4 (fr) | 2017-12-06 |
SG11201607131UA (en) | 2016-10-28 |
WO2015127524A1 (fr) | 2015-09-03 |
AU2015222707A1 (en) | 2016-09-15 |
US20170009772A1 (en) | 2017-01-12 |
BR102014004572A2 (pt) | 2015-12-29 |
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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 |
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17P | Request for examination filed |
Effective date: 20160921 |
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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 |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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DAX | Request for extension of the european patent (deleted) | ||
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: JOHN FLETCHER, NICHOLAS Inventor name: WONG CARDOSO, EDUARDO Inventor name: KRONEMBERGER, STEVEN Inventor name: SALINO CUNHA, LEONARDO Inventor name: ZARAGOZA LABES, ALAN |
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A4 | Supplementary search report drawn up and despatched |
Effective date: 20171108 |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: E21B 43/12 20060101ALI20171102BHEP Ipc: F04B 47/06 20060101AFI20171102BHEP Ipc: F04D 13/08 20060101ALI20171102BHEP Ipc: E21B 43/01 20060101ALI20171102BHEP Ipc: F04D 1/00 20060101ALI20171102BHEP Ipc: F04D 29/08 20060101ALI20171102BHEP |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20200901 |