WO2003033866A1 - Systeme et procede permettant d'injecter de l'eau dans un reservoir d'hydrocarbures sous-marin - Google Patents

Systeme et procede permettant d'injecter de l'eau dans un reservoir d'hydrocarbures sous-marin Download PDF

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Publication number
WO2003033866A1
WO2003033866A1 PCT/GB2002/004628 GB0204628W WO03033866A1 WO 2003033866 A1 WO2003033866 A1 WO 2003033866A1 GB 0204628 W GB0204628 W GB 0204628W WO 03033866 A1 WO03033866 A1 WO 03033866A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
water
facility
underwater
reservoir
Prior art date
Application number
PCT/GB2002/004628
Other languages
English (en)
Inventor
David Eric Appleford
Brian William Lane
Original Assignee
Alpha Thames Ltd
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 Alpha Thames Ltd filed Critical Alpha Thames Ltd
Priority to US10/491,882 priority Critical patent/US20040244980A1/en
Priority to EP02801384A priority patent/EP1448869A1/fr
Priority to BR0213619-8A priority patent/BR0213619A/pt
Publication of WO2003033866A1 publication Critical patent/WO2003033866A1/fr
Priority to NO20041926A priority patent/NO20041926L/no

Links

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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/18—Repressuring or vacuum methods

Definitions

  • the present invention relates to a system and method for injecting water into a hydrocarbon reservoir.
  • production fluid extracted from the hydrocarbon reservoir by production wells, is driven to a host facility by the natural pressure of the reservoir.
  • the natural pressure varies from field to field and some reservoirs may not have enough pressure to drive the production fluid to the host facility.
  • a way of overcoming this problem is to boost the pressure of the reservoir by injecting water supplied from the host facility into it.
  • a seabed facility pipeline connects the host facility to a seabed facility where the pipeline is manifolded into separate well flowlines connected to water injection wells located at the extremities of the reservoir.
  • Water for injection purposes is normally chemically treated and filtered at the host facility to ensure its suitability for injection into the hydrocarbon reservoir.
  • the water is pumped down the seabed facility pipeline and into the reservoir via the seabed facility, the well flowlines and the water injection wells.
  • the injected water is pumped to a pressure higher than the natural pressure of the reservoir so that it drives production fluid from the reservoir up to the production wells and on to the host facility.
  • the required pressure of the injected water is typically in the region of
  • a system for injecting water into a hydrocarbon reservoir comprising: a host facility having water supply means; an underwater pump remote from the host facility, and connected to the water supply means by a pipeline; and at least one water injection well connected to the underwater pump, whereby the pump is arranged to pump the water received from the pipeline to the or each well to inject the pumped water into the reservoir at a pressure higher than the pressure of the fluid in the reservoir.
  • the pump may be connected to the at least one water injection well by at least one flowline which is able to withstand conveyed fluid of a higher pressure than the pipeline between the host facility and the underwater pump.
  • the pump is preferably located at an underwater facility such as a seabed facility. Gravity alone may be used to convey water to the pump at the underwater facility. In contrast, the prior art described requires the water to be pumped to the seabed facility.
  • a pipeline able to convey fluid at a high pressure is not required between the host facility and the underwater facility, as water from the host facility is only at a high pressure once it has been pumped by the pump.
  • the pipeline between the host facility and the underwater facility may have its pipe wall thickness reduced as it does not need to convey fluid at such a high pressure. As there is a reduction in the quantity of pipe material for this pipeline, there is a significant cost saving.
  • the pressure losses due to friction in the pipeline are reduced. Consequently, less power is required to pump the water for injection, enabling a smaller pump and drive motor (which is preferably an electric motor) to be specified at the underwater facility and, if required, at the host facility. Hence, there is a further cost saving as a smaller pump requires less energy to drive it.
  • the host facility also has a pump for water supply, the reduction in size of the pump and its associated drive motor provides a saving in deck space on the host facility and in the weight to be supported by the host facility. If water supply is by gravity alone, no pump need be provided at the host facility.
  • the reduction in pipe wall thickness enables the sections of the pipe for making up the pipeline to the underwater facility to be welded together more easily and quickly which considerably reduces fabrication costs. Furthermore, the reduction in pipe wall thickness may enable the pipeline to be reeled onto a drum and be laid from a pipe reel-lay barge which is a faster method of installing a pipeline than other conventional methods.
  • the savings in pipeline costs enables longer tie-backs to the host facility to be economically considered which may allow the use of an existing host facility to be used for a remote field as opposed to having to provide a new host facility. This is of particular benefit when the field to be developed is located beneath deep water.
  • the system preferably includes a power and control umbilical from the host facility to the underwater pump for conveying power and control signals to the pump.
  • the power and control umbilical may be also arranged to convey power and control signals required for other underwater equipment such as wellhead trees and manifolds. Minimal additional cost is incurred when providing power to the underwater pump if the same umbilical is used for the underwater pump and other underwater equipment.
  • the underwater facility may include a retrievable module which incorporates the pump.
  • the pump may be easily recovered for inspection, maintenance or repair, for example.
  • the module may be of the type forming part of the modular system designed by Alpha Thames Ltd of Essex, United Kingdom, and named AlphaPRIME.
  • a method for injecting water into a hydrocarbon reservoir comprising the steps of: supplying water from a host facility to an underwater pump via a connecting pipeline; pumping the water received by the underwater pump to a higher pressure; and injecting the pumped water into the reservoir at a pressure higher than the pressure of the fluid in the reservoir.
  • the method may include the steps of using any of the system components referred to above.
  • Figure 1 is a schematic diagram of a system for putting the invention into practice.
  • Figure 2 is a modified detail of Figure 1.
  • a system 1 has a host facility 2 which may be, for example, onshore or on a fixed or floating rig.
  • the host facility 2 has an injection water treatment plant 3 with a connected pump 4 which is connected to a remote seabed facility 5 by an injection water supply pipeline 6.
  • the seabed facility 5 is connected to a plurality of water injection wells 7 for a hydrocarbon reservoir whereby each well is connected to the facility 5 by a separate supply flowline 8 which is able to withstand conveyed water of a higher pressure than the water supply pipeline 6.
  • the water supply pipeline 6 is connected to an inlet
  • the pump 10 is arranged to be supplied with power and control signals from the host facility 2 via a power and control umbilical 13. The operation of the system 1 will now be described.
  • the water treatment plant 3 chemically treats the water for injection so that it is suitable for injection into the hydrocarbon reservoir and the pump 4 at the host facility 2 pumps the treated water into the water supply pipeline 6 where gravity assists the conveyance of the water to the seabed facility 5.
  • the water is pressure boosted by the high pressure pump 10 and is injected into the hydrocarbon reservoir via the well supply flowlines 8 and the water injection wells 7.
  • the pressure of the injected water is higher than the pressure of the fluid in the reservoir so that it drives the production fluid to the host facility 2 via production wells (not shown).
  • the seabed facility 16 illustrated in Figure 2 comprises a base structure 17 which supports a retrievable module 18 that contains the high pressure pump 10.
  • the pump inlet 9 is connected to the injection water supply pipeline 6 from the host facility 2 by a multi-ported fluid connector 19 such as that described in GB-A- 2261271 and the pump outlet 12 is connected by the conduit 11 to the well supply flowlines 8 via the same multi-ported fluid connector 19.
  • This connector 19 enables the module 18 to be isolated from the pipeline 6 and flowlines 8 connected to the base structure 17 when the module 18 is to be retrieved.
  • the module 18 has a power and control pod 20 which is connected to the power and controls umbilical 13 by a connector 21 whereby the pod 20 directs power and provides control signals to equipment within the module 18.
  • the pod 20 controls the high pressure pump 10 but it may be overridden by control signals received from the host facility 2 via the umbilical 13.
  • the pod 20 also drives the pump 10 with power received from the host facility 2 via the umbilical 13.
  • water from the host facility 2 is received by the high pressure pump 10 in the module 18 via the fluid connector 19 and pressure boosted water is pumped out of the module 18 via the fluid connector 19 and manifold conduit 11 and into the hydrocarbon reservoir via the well supply flowlines 8 and water injection wells 7.
  • the pump 4 at the host facility 2 may not be required if the injection water can flow to the remote facility 5 under the action of gravity alone.
  • the power and control pod 20 in the retrievable module 18 is also optional, as power and control could be provided/controlled externally of the module.
  • the pipeline and flowlines described may be of rigid or flexible construction.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Jet Pumps And Other Pumps (AREA)

Abstract

Selon la présente invention, de l'eau est acheminée d'une installation hôte (2) jusqu'à une pompe (10) située dans une installation sur fond marin (5), via une canalisation de raccordement (6). La pompe (10) pompe l'eau à une pression plus élevée, et injecte l'eau pompée dans un réservoir d'hydrocarbures à une pression plus élevée que la pression du liquide dans le réservoir de façon qu'elle entraîne le liquide de production vers l'installation hôte (2).
PCT/GB2002/004628 2001-10-12 2002-10-11 Systeme et procede permettant d'injecter de l'eau dans un reservoir d'hydrocarbures sous-marin WO2003033866A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US10/491,882 US20040244980A1 (en) 2001-10-12 2002-10-11 System and method for injecting water into an underwater hydrocarbon reservoir
EP02801384A EP1448869A1 (fr) 2001-10-12 2002-10-11 Systeme et procede permettant d'injecter de l'eau dans un reservoir d'hydrocarbures sous-marin
BR0213619-8A BR0213619A (pt) 2001-10-12 2002-10-11 Sistema e método para injetar água em um reservatório subaquático de hidrocarboneto
NO20041926A NO20041926L (no) 2001-10-12 2004-05-11 System og fremgangsmate for injisering av vann i et hydrokarbonreservoar under vann

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0124616.4A GB0124616D0 (en) 2001-10-12 2001-10-12 A system and method for injecting water into a hydrocarbon reservoir
GB0124616.4 2001-10-12

Publications (1)

Publication Number Publication Date
WO2003033866A1 true WO2003033866A1 (fr) 2003-04-24

Family

ID=9923777

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/004628 WO2003033866A1 (fr) 2001-10-12 2002-10-11 Systeme et procede permettant d'injecter de l'eau dans un reservoir d'hydrocarbures sous-marin

Country Status (6)

Country Link
US (1) US20040244980A1 (fr)
EP (1) EP1448869A1 (fr)
BR (1) BR0213619A (fr)
GB (1) GB0124616D0 (fr)
NO (1) NO20041926L (fr)
WO (1) WO2003033866A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101906960A (zh) * 2010-08-27 2010-12-08 哈尔滨工业大学 注水井测调仪无绳对接装置
CN102777158A (zh) * 2012-07-06 2012-11-14 西南石油大学 测调联动系统及其操作工艺

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2458011B (en) * 2008-02-26 2010-12-15 Vetco Gray Inc Underwater wireless communications
MX2012006145A (es) * 2009-12-21 2012-06-28 Chevron Usa Inc Sistema y metodo para inyectar agua en yacimientos petroliferos.
NO333264B1 (no) * 2011-04-18 2013-04-22 Siemens Ag Pumpesystem, fremgangsmate og anvendelser for transport av injeksjonsvann til en undervanns injeksjonsbronn
US9951586B2 (en) * 2014-01-03 2018-04-24 Shell Oil Company Method and system for inhibiting freezing of low salinity water in a subsea low salinity water injection flowline
MX2020001750A (es) * 2017-08-14 2020-08-20 Petroleo Brasileiro Sa Petrobras Sistema submarino y metodo para presurizacion de una reserva de petroleo submarina mediante la inyeccion de al menos uno de agua y gas.
BR102017021444B1 (pt) * 2017-10-06 2021-11-03 Petróleo Brasileiro S.A. - Petrobras Sistema e método submarino para pressurização de um reservatório de petróleo submarino através de injeção independente de água e gás
BR102019026341A2 (pt) * 2019-12-11 2021-06-22 Petróleo Brasileiro S.A. - Petrobras Sistema multimodular integrado de produção marítima de hidrocarbonetos
US20220120166A1 (en) * 2020-09-30 2022-04-21 C-Innovation Llc Vessel-based water injection systems
CN113775320A (zh) * 2021-11-11 2021-12-10 滨州学院 井下注水装置及井下注水方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848471A (en) * 1986-08-04 1989-07-18 Den Norske Stats Oljeselskap Method and apparatus for transporting unprocessed well streams
WO2001020128A1 (fr) * 1999-09-10 2001-03-22 Alpha Thames Ltd. Module recuperable et procede d'utilisation pour un systeme de traitement sous-marin

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0124615D0 (en) * 2001-10-12 2001-12-05 Alpha Thames Ltd A method and system for handling production fluid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848471A (en) * 1986-08-04 1989-07-18 Den Norske Stats Oljeselskap Method and apparatus for transporting unprocessed well streams
WO2001020128A1 (fr) * 1999-09-10 2001-03-22 Alpha Thames Ltd. Module recuperable et procede d'utilisation pour un systeme de traitement sous-marin

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101906960A (zh) * 2010-08-27 2010-12-08 哈尔滨工业大学 注水井测调仪无绳对接装置
CN102777158A (zh) * 2012-07-06 2012-11-14 西南石油大学 测调联动系统及其操作工艺
WO2014005393A1 (fr) * 2012-07-06 2014-01-09 西南石油大学 Système de tringlerie d'essai et d'ajustement et son procédé de mise en œuvre
CN102777158B (zh) * 2012-07-06 2014-09-10 西南石油大学 测调联动系统及其操作工艺

Also Published As

Publication number Publication date
BR0213619A (pt) 2004-09-14
EP1448869A1 (fr) 2004-08-25
US20040244980A1 (en) 2004-12-09
NO20041926L (no) 2004-05-11
GB0124616D0 (en) 2001-12-05

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