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 PDF

Info

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Withdrawn
Application number
EP15755450.2A
Other languages
German (de)
English (en)
Other versions
EP3112582A4 (fr
Inventor
Leonardo SALINO CUNHA
Steven KRONEMBERGER
Eduardo WONG CARDOSO
Nicholas JOHN FLETCHER
Alan ZARAGOZA LABES
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.)
FMC Technologies do Brasil Ltda
Original Assignee
FMC Technologies do Brasil Ltda
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 FMC Technologies do Brasil Ltda filed Critical FMC Technologies do Brasil Ltda
Publication of EP3112582A1 publication Critical patent/EP3112582A1/fr
Publication of EP3112582A4 publication Critical patent/EP3112582A4/fr
Withdrawn legal-status Critical Current

Links

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)
EP15755450.2A 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 Withdrawn EP3112582A4 (fr)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
US10151318B2 (en) Omnirise hydromag “variable speed magnetic coupling system for subsea pumps”
AU2011240037B2 (en) System for installing and testing subsea wellhead equipment
US8485797B2 (en) External oil expansion chamber for seabed boosting ESP equipment
CN103097650B (zh) 海底马达和泵模块的补偿式阻隔和润滑流体压力调控系统
CN1203654A (zh) 一种海底泵系统及相关方法
US20110011593A1 (en) Method and system for circulating fluid in a subsea intervention stack
NO342437B1 (no) Hermetisk forseglet motorlederrør
US20050220645A1 (en) Submersible Pumping System and Method for Boosting Subsea Production Flow
US10431923B2 (en) Progressive-action sealing system for electrical conductors
US20150354574A1 (en) Sealed pump
NO20100903A1 (no) Et trykkreguleringssystem for motor- og pumpebarrierefluider med differensialtrykkstyring
US20110302911A1 (en) Methods And Systems For Subsea Electric Piezopumps
EP3548695B1 (fr) Régulation de la température d'un flux de traitement sous-marin
EP3112582A1 (fr) Installation pour utilisation de fluide de contrôle comme fluide barrière pour moteurs électriques accouplés à des pompes sous-marines
NO332975B1 (no) Kombinert trykkreguleringssystem og -enhet for barriere- og smorefluider for en undersjoisk motor- og pumpemodul
WO2013167664A1 (fr) Dispositif d'équilibrage de pression
Dale et al. An All-Electric BOP Control System: A Game-Changing Technology
RU2465440C2 (ru) Подводный клапан и способ защиты подводного клапана
CN103147973A (zh) 一种海底泥浆举升泵密封压力补偿装置
US20220412189A1 (en) Centrifugal pump for heating fluid by eddy current, and subsea tool for heating fluid by eddy current
EP4067664A1 (fr) Pompe submersible à isolation de fluide barrière de liquide de lubrification de moteur à partir d'un produit pompé
CN103930644A (zh) 延长井口的使用寿命的方法及装置
Jahnsen et al. The Kvaerner Multiphase Pump System for Deepwater Applications

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: 20160921

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

AX Request for extension of the european patent

Extension state: BA ME

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

A4 Supplementary search report drawn up and despatched

Effective date: 20171108

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

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

18D Application deemed to be withdrawn

Effective date: 20200901