CN103511218A - Apparatus and method for operating a subsea compression system in a well stream - Google Patents
Apparatus and method for operating a subsea compression system in a well stream Download PDFInfo
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- CN103511218A CN103511218A CN201310262022.0A CN201310262022A CN103511218A CN 103511218 A CN103511218 A CN 103511218A CN 201310262022 A CN201310262022 A CN 201310262022A CN 103511218 A CN103511218 A CN 103511218A
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- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 25
- 230000004044 response Effects 0.000 claims abstract description 23
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- 238000005086 pumping Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 107
- 239000012530 fluid Substances 0.000 description 14
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- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0085—Adaptations of electric power generating means for use in boreholes
-
- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/36—Underwater separating arrangements
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
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- Fluid Mechanics (AREA)
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Abstract
The invention relates to an apparatus and a method for operating a subsea compression system in a well stream, and discloses a method for operating a subsea compression system and a subsea compression system in a well stream. The subsea compression system comprising a compressor (1) and an electromotor driven pump (2), wherein the compressor is operable for compression of gas and the pump is operable for pumping liquid from the compression system. Compressed gas is recycled from the compressor downstream side to the upstream side of the compressor via a turbo-expander unit (10) which is drivingly connected to a generator (17). The generator is configured to supply charging current to a battery (18) in response to recycling of compressed gas via the turbo-expander unit, wherein the pump is operable on electrical power that is supplied from the battery.
Description
Technical field
The present invention relates to be configured to improve the pressure of well stream and the compression system of flow in subsea hydrocarbon production.Or rather, the present invention relates to a kind of for moving improved equipment and the method for the seabed compression system forming for this object structure.
Background technique
Coastal waters rock gas produce relate on sea bed by from control and provide the device of power based on ground or the terminal based on ocean or master environment.Well fluids is sent to receiving terminal by pipe-line from subsea production system, to accept other processing, then to market supply product.In the initial period of producing, fluid reservoir pressure is conventionally enough to be fed to hydrocarbon fluid and passes through pipe-line.Afterwards aborning, or in the situation that the distance between well fluids reservoir and receiving terminal is very long, may in one or more compression systeies, increase along pipe-line hydrodynamic pressure and flow, to keep flow rate and the level of production.
In compression system, the gas feed in well stream is to compressor, and compressing mechanism causes with compressive state Exhaust Gas downstream.Can from well stream, extract excess liq out, and be fed to pump, pump is configured to typically by injecting liquid in the pressurized gas of discharging from compressor liquid pumping to downstream.After this manner, decomposite two-phase well stream leaves compression system under the stress level raising and flow.However, seabed compression system can be arranged through alternatively independent export pipeline and discharge pressurization gas and liquid stream.
Well stream can be collected in separator flask, and separator flask is positioned at compressor He Beng upstream, and is configured to make gas and liquor separation, and about liquid volume share or the liquid level in system, separator provides predictable operating point to compressor and pump.
The compressor using in the compression system of seabed can be suitable for pack processing containing the humid gas of the liquid of certain ratio.Thereby in some applications, separator can be replaced by mixer, mixer is configured to mixed gas and liquid, and homogeneous humid gas is fed to compressor.But for example seabed centrifugal compressor cannot start conventionally when being full of liquid.Certain in compression system more than liquid level, before compressor start, is discharged needs pump to compressor assembly.
Traditionally, each compressor and pump, typically by electrical motor driven, come electric motor supply operate power and power ratio control by the umbilical cord that compression system is connected with its master environment.Thereby, each pump motor in traditional compression system moves all independent equipments of required power and control gear for it, such as seabed switch gear, wet mating electrical connector, high voltage electricity wire jumper and electric control system member, cooling circuit and lubricating loop, comprise valve and flow and pressure controller etc.
Summary of the invention
The present invention is intended to simplify from seashore or sea to the power division that is positioned at the equipment in seabed.
The present invention is also intended in the compression system of seabed, provide distributed power production decision, and seabed compression system comprises compressor and electric motor pump, and wherein, compressor can move pressurized gas, and pump can move and from compression system, pumps out liquid.
Another target of the present invention is to allow, before compressor start, to remove the liquid of collection from humid gas compressor, in other words, allows, in the situation that compressor does not move, compressor to be discharged.
By a kind of method of moving well stream Zhong seabed compression system, reach at least one target, compression system comprises compressor and electric motor pump, and compressor can move pressurized gas, and pump can move and from compression system, pump out liquid, and method comprises:
The gas return line that the downstream side of compressor and the upstream side of compressor are connected is provided;
Turbo-expander cell layout is become with gas return line and is connected in stream;
Mode by turbo-expander unit with transmission is connected on generator, and generator configurations battery pair is carried charging current;
In response to make pressurized gas circulation move generator by turbo-expander unit, battery is charged, and from the electric power of battery, carry out process pump with supply.
Method can further comprise by gas feed pipeline, and gas is fed to compressor from be arranged in the container of upstream of compressor well stream.
Method can be further comprising the steps, and wherein, gas and liquid in well stream are mixed, and from being configured to the container of mixer, be fed to compressor as homogeneous humid gas.
Method alternatively comprises the following steps, and wherein, the gas in well stream and liquid are fed to respectively compressor and pump individually from being configured to the container of separator.
About being for example suitable for processing the centrifugal compressor of humid gas, method can be further comprising the steps, wherein, liquid from compressor discharge to container in.Thus, pump can move in response to the liquid level detecting in compressor and/or container.
Method can alternatively comprise the following steps, and wherein, liquid is from compressor discharge to independent blowdown vessel, and pump moves and from blowdown vessel, pumps out liquid in response to the liquid level measuring in blowdown vessel and/or compressor.
Method preferably includes following steps, and wherein, before compressor start, pump discharges compression system with battery Power operation.
Seabed compression system for well stream according to the present invention comprises compressor and electric motor pump, and wherein, compressor can move pressurized gas, and pump can move and from compression system, pumps out liquid.Gas return line is arranged to make the downstream side of compressor and the upstream side of compressor to be connected; Turbo-expander cell layout one-tenth is connected in stream with gas return line; Turbo-expander unit is connected with the mode of generator with transmission, and power facility causes in response to make pressurized gas circulation by turbo-expander unit battery is carried to charging current, and pump can move from the electric power of battery in enough supplies.
In a preferred embodiment, gas feed pipeline is arranged to make compressor to be connected with the container that is arranged in upstream of compressor.Container can be the mixer that gas and liquid is mixed into the homogeneous humid gas that is supplied to compressor.Alternatively, container can be gas and liquid are supplied to respectively to the separator of compressor and pump individually.
In a preferred embodiment, compressor is connected with container by discharge pipe line, so that discharge liquid is excreted to container from compressor.In this embodiment, the liquid level detector part in container is arranged to the operation of control pump.
In a preferred embodiment, compressor is arranged to be connected in stream with blowdown vessel, and the operation of liquid level detector part control pump in blowdown vessel.
In a preferred embodiment, between the liquid spray site of the import of turbo-expander unit on compressor outlet and pressurized gas discharge pipe, be connected on pressurized gas discharge pipe, flow control valve is passed through in the outlet of turbo-expander unit, and flow control valve can be connected to humid gas is fed on the fluid pipe-line of compressor.Flow control valve starts in response to the liquid volume level detecting in container.
Turbo-expander outlet can alternatively be connected on well stream in container upstream.
In a preferred embodiment, from delivery side of pump, can be connected on container by the flow control valve being arranged in liquid return loop.
Gas flow by turbo-expander unit can start in response to the surge condition detecting in compressor.
Pump can be positive-displacement pump.Reduction gear or speed reducer can insert between turbo-expander unit and generator.
In a preferred embodiment, battery is the battery pack in uninterruptible power supply (UPS) system.
In other words, the pressure reduction that compressor produces is used for driving turbo-expander driven electric generator, with to battery or batteries charging.Battery/a plurality of batteries can be a part of uninterruptible power supply system (UPS).
Thereby the present invention reduces obtain the needs of electric power from seashore, because pump will be supplied with the electric power producing on the spot certainly, and in addition, the present invention can charge to battery.
Turbo-expander unit is centrifugal or axial flow turbine, and the pressurized gas of compression expand therein, and the energy in expanding gas discharges to drive turboexpander or rotor in turbo-expander unit.
In the present invention, turboexpander has output shaft, and output shaft is connected on generator in the mode of transmission, and generator configurations battery pair/a plurality of batteries are carried charging current.Generator and turbo-expander unit can direct interconnection, or the interconnection indirectly by for example inserting reduction gear between turbo-expander unit and generator or speed reducer.
Turbo-expander unit is included in gas feed loop, and gas feed loop comprises to be made the downstream side of compressor or discharges the gas feed pipeline that side is connected with upstream side or the suction side of compressor.The pressure that leaves the expanding gas of turbo-expander unit can remain on the gas pressure on the suction side of compressor, so that gas circulation is to the gas flow of upstream of compressor.Alternatively, expanding gas can turn back to upstream gas and flows in compressor inlet side by means of the sparger being driven by gas flow.
Turbo-expander unit and generator can be driven off and on, to keep the available storage of water of battery/a plurality of batteries.Turbo-expander unit and generator can be driven alternatively, to produce the operate power that is directly supplied to pump.
Pump can move in response to the liquid volume level detecting in separator or mixer, for example, or moves in response to the liquid level detecting in compressor/compression case.Pump can be used as emptying pump, and before compressor start, emptying pump discharges the liquid of compressor assembly with battery Power operation.
Outlet in the discharge side of pump can be connected to separator or the mixer for circulating liquid by the flow control valve being arranged in liquid return loop (comprising liquid return line), to avoid for example risk of the dry operation of pump.
In the situation that reach the low liquid set point in separator or mixer, pump can stop.In addition, pump can have for supplying the outside liquid service pipeline of methyl alcohol for example or ethylene glycol, and methyl alcohol or ethylene glycol can be used for pump to carry out continuously and/or starting intermittently.
The road of flowing back to of seabed compression system comprises gas return line, and gas can turn back to suction side from the discharge side of compressor by this gas return line.By being arranged to make to flow through in response to the surge condition detecting in compressor, by turbo-expander unit, pass through gas return line, the present invention can provide antisurging circulation loop.In surge condition, the liquid that can control by pump flows, so that liquid-circulating is to container, or injects liquid in export pipeline.
Some groups of compressors and pump can be arranged in the compression system of seabed, and each group comprises pressurized gas return loop, liquid return loop and turbo-expander unit, generator and battery pack respectively.
Can in series arrange two or more compressors or compressor stage.Compressor or compressor stage below that turbo-expander unit can insert respectively are from behind returned in stream to the compressor above of series connection or the pressurized gas of compressor stage above.
Interstage cooler can be arranged between the compressor or compressor stage of in series arranging in addition.
A kind of method of moving well stream Zhong seabed compression system, described compression system comprises compressor and electrical motor driven formula pump, described compressor can move pressurized gas, and described pump can move and from described compression system, pump out liquid, and described method comprises:
-the gas return line that the downstream side of described compressor and the upstream side of described compressor are connected is provided;
-turbo-expander cell layout is become with described gas return line and is connected in stream;
-mode by described turbo-expander unit with transmission is connected on generator, and described generator configurations battery pair is carried charging current;
-in response to make pressurized gas circulation move described generator by described turbo-expander unit, described battery is charged, and from the electric power of described battery, move described pump with supply.
In another embodiment, gas, by gas feed pipeline, is fed to described compressor from be arranged in the container of described upstream of compressor described well stream.
In another embodiment, the gas in described well stream and liquid mix, and from being configured to the container of mixer, are fed to described compressor as homogeneous humid gas.
In another embodiment, the gas in described well stream and liquid are fed to respectively described compressor and described pump individually from being configured to the container of separator.
In another embodiment, liquid from described compressor discharge to described container.
In another embodiment, described pump moves in response to the liquid level detecting in described container or compressor.
In another embodiment, liquid is from described compressor discharge to independent blowdown vessel, and described pump moves from described blowdown vessel and pumps out liquid in response to the liquid level measuring in described blowdown vessel or compressor.
In another embodiment, before described compression system starts, described pump discharges described compression system with battery Power operation.
A seabed compression system for well stream, described compression system comprises compressor and electrical motor driven formula pump, described compressor can move pressurized gas, and described pump can move and from described compression system, pump out liquid, in another embodiment,
-be arranged to gas return line that the downstream side of described compressor and the upstream side of described compressor are connected,
-be arranged to described gas return line in the turbo-expander unit that is connected of stream,
-described turbo-expander unit is connected on generator in the mode of transmission, described power facility causes in response to make pressurized gas circulation by described turbo-expander unit battery is carried to charging current, wherein, described pump can move from the electric power of described battery in enough supplies.
In another embodiment, gas feed pipeline is arranged to make described compressor to be connected with the container that is arranged in described upstream of compressor.
In another embodiment, described container is gas and liquid to be mixed into the mixer of the homogeneous humid gas that is supplied to described compressor.
In another embodiment, described container is that gas and liquid are fed to respectively to the separator of described compressor and described pump individually.
In another embodiment, described compressor is connected with described container by discharge pipe line, so that discharge liquid is excreted to described container from described compressor.
In another embodiment, the liquid level detector part (S) in described container is arranged to control the operation of described pump.
In another embodiment, described compressor is arranged to be connected in stream with blowdown vessel, and liquid level detector part in described blowdown vessel is controlled the operation of described pump.
In another embodiment, the import of described turbo-expander unit is connected on described pressurized gas discharge pipe between the outlet of described compressor and the liquid spray site on pressurized gas discharge pipe, and the outlet of described turbo-expander unit is through at the flow control valve that can be connected on the fluid pipe-line that humid gas is fed to described compressor.
In another embodiment, described flow control valve starts in response to the liquid volume level detecting in described container.
In another embodiment, from described delivery side of pump, can be connected on described container by the flow control valve being arranged in liquid return loop.
In another embodiment, the gas flow by described turbo-expander unit starts in response to the surge condition detecting in described compressor.
In another embodiment, described pump is positive-displacement pump.
In another embodiment, reduction gear or speed reducer insert between described turbo-expander unit and described generator.
In another embodiment, described battery is the battery pack in uninterruptible power supply (UPS) system.
According to dependent claims, and according to the following detailed description of preferred embodiment, additional advantage of the present invention, favorable characteristics and embodiment will be apparent.
Accompanying drawing explanation
With reference to accompanying schematic figure, will further illustrate below the present invention.In the drawings,
Fig. 1 is the schematic diagram of configuration of the seabed compression system of schematically illustrated prior art;
Fig. 2 corresponding to Fig. 1, illustrate according to the schematic diagram of the configuration of seabed of the present invention compression system, and
Fig. 3 is the simplified schematic diagram that realization of the present invention is shown.
Embodiment
The schematically illustrated main modular for the seabed compression system to well stream supercharging and flow back to scanning of road in the schematic diagram of Fig. 1.Seabed compression system receives two-phase or the heterogeneous well fluids from least one subsea production system, and supercharging well fluids F is fed in one or more output pipeline circuits, so that supercharging well fluids F is further sent to receiving terminal or master environment.
Seabed compression system comprises compressor module, pump module, and compressor module comprises one or more compressors 1, and pump module comprises at least one electrical motor driven formula pump 2.The container 3 that is arranged in upstream of compressor in well stream can be configured to make the separator of two-phase well fluids gas and liquor separation.Container 3 can alternatively be configured to mixer, and mixture makes liquids and gases be mixed into homogeneous fluid or humid gas, so that they are transported to compressor.Container 3 can be used as the discharging container of system, thereby receives the excess liq that turns back to container 3 from compressor.In addition, container 3 can structurally be arranged to dissolve the liquid slag charge in well stream, to stop the generation of hydroxide, and clean out the solid particle being carried in well stream, washing gas etc., make in all cases, and compressible fluid (humid gas) is all transported to compressor inlet.Compressor 1 is designed to pressurized gas, and under the pressure raising, gas is discharged in output pipeline circuit.Pump 2 is designed to inject liquid into the gas flow of discharging from compressor under the pressure raising.
By being connected to the umbilical cord on the compression system of seabed, from master environment supply high voltage power, low voltage power, hydraulic pressure, control and electric power (utility).By transformer, power cable and wet mating electrical connector, switch gear, electric wire jumper, breaker module etc., electric power and power ratio control are distributed to the consumer in the compression system of seabed.Because compressor (one or more) and pump (one or more) are driven individually by special variable speed drives (VSD) electric motor 4 and 5 respectively, so need to electric power and power ratio control equipment be installed individually for each motor.In the drawings, by VSD piece 6, schematically show special electric power and power ratio control is equipped.
Scanning of Tu2Shi seabed compression system, seabed compression system is the configuration that the present invention utilizes.Difference at the structure Notable of Fig. 2 is that the quantity of VSD piece 6 reduces significantly, because with the electric power driven pump (one or more) 2 that (being seabed) produces at the scene, VSD piece 6 can reduce 50%.
Certainly, by power division during to seabed compression system the minimizing of required the number of components be applicable to original from coastal waters or the related all members of sea supplied with electric power.
Schematically illustrated seabed compression system layout according to a preferred embodiment of the invention in Fig. 3.
With reference to Fig. 3, do not explain, be equipped with seabed compression system complete and that can move and typically comprise input and output well stream manifold and valve, flow and pressure meter, pipeloop and valve, antisurging control loop and valve, lubricated and barrier fluid loop and valve, umbilical cord head end, transformer, cooler, sand trap well etc., and other equipment of finding on the compression system of seabed traditionally.For clear, from Fig. 3, got rid of for detailed structure and the tissue of understanding the unessential module of the present invention and unit.
In realizing seabed of the present invention compression system, by supply line 7, supply well stream F.In preferred realization of the present invention, well stream is received in container 3, container 3 is configured to mixer, mixer is realized the gas be included in well stream and the mixing of liquid, thereby produce the compressible humid gas of homogeneous, the compressible humid gas of this homogeneous is transported to the import of compressor 1 from container 3 by gas feed pipeline 8.
Pressurized gas is discharged to output pipeline system and output pipeline circuit (not shown) by pressurized gas discharge pipe 9 from compressor 1.At least a portion of pressurized gas can be extracted out from compressor discharge pipe 9, to be fed to turbo-expander unit 10 by gas feed pipeline 11.Expanding gas is 10 discharges from turbo-expander unit, and via stream, adjust the upstream side that valve 13 is recycled to compressor by expanding gas return line 12.
Alternatively can be arranged on and towards the stream on the gas feed pipeline 11 of turbo-expander unit 10, adjust valve 13 and can control stream in response to the liquid volume level applying in the He seabed control unit 14 being detected by sensor component S in container 3 and adjust Fa13， seabed control unit 14 and control the setting that stream is adjusted valves 13.One-way valve 15 entry deterrences in gas return line 12 return to the backflow in gas line 12.
As expanding gas as illustrated in the continuous line in Fig. 3, on the upstream side of compressor 1, from turbo-expander unit 10, turn back to the alternative of gas feed pipeline 8, expanding gas can turn back in the upstream side Shang Geng upstream of compressor the well stream such as container 3 or container 3 upstreams, as in Fig. 3 by extending to from gas return line 12 being shown in dotted line of upstream side of container 3.For example, at liquid, in the situation that precipitate from expanding gas in the waste side of turbo-expander unit 10, a rear alternative can be favourable.
In the embodiment of the processing homogeneous two phase fluid of describing in the above, pump 2 can operate to emptying pump, only to emptying pump, provides power off and on, to discharge unnecessary liquid from compression system.For this reason, the liquid being collected in compressor and any auxiliary equipment can turn back to container 3 by discharge pipe line 24.Can start in response to the liquid level measuring in container 3 and/or compressor the operation of pump 2.
Unnecessary liquid can alternatively be collected in independent blowdown vessel, such as the discharge ware 26 that is arranged in the storage tank 25 on compressor or is arranged to be connected in stream with compressor.Then can start in response to the liquid level measuring in compressor, storage tank or discharge ware the operation of pump.If compressor is filled with liquid, pump will be used battery Power operation, and operation until the liquid in compressor housing and any auxiliary equipment in acceptable level, it is safe under acceptable level, starting compressor.
In other embodiment (such as the embodiment that wherein pump for example moves more continually), in the situation that reach the low liquid set point/liquid level in container 3 or compressor, pump can stop.Pump also can have outside liquid service pipeline, and it is typically supplied and can be used for continuously and/or methyl alcohol or the ethylene glycol of priming pump off and on.
Can be by representing that VSD piece 6 and the umbilical cord head end piece 27 of necessary high voltage and low voltage circuit, wet matching connector, switch gear, circuit breaker etc. comes compressor motor 4 supply electric power and power ratio controls.
Can be for the remarkable rising of gas pressure, such as for example about 120 bar from about 40 bar of compressor inlet to compressor outlet, design the compressor using in the compression system of seabed.About this point, substantially use heavy centrifugal humid gas compressor, it is typically with the power of about megawatt to tens megawatt and approximately turn/rotational speed operation per minute of 8-12000.
While using in the compression system of Dang seabed, the pump of discussing is designed so that liquid is pressurized to and injects liquid into required pressure from the pressurized gas that compressor is discharged.About this point, use positive-displacement pump, it is arranged in dimensionally take scope as tens kilowatts of power and approximately rotational speed operations of 1500-4000 rpm to hundreds of kilowatt.In the realization as emptying pump, for example, can design pump for about 100 cubic metres of flow rates hourly roughly.
But.Alternatively can use compressor, positive-displacement pump or centrifugal pump with other motion speed and operate power rotation.
However, provide large degrees of freedom aspect the rotating member of the present invention in selecting compressor station, because can adjust output torque and the rotational speed that valve 13 is controlled drive gas flow and generation by stream.
By meeting in Fig. 3, represent that 28 decelerations of indicating or regulating device (such as hydraulic power torque converter or electromagnetic hysteresis clutch) for example can insert between turbo-expander unit and generator alternatively, and be controlled between zero-sum 100% locking between driving component and driving component, this depends on required output torque.
As distributed power supply and seabed power production disclosed above provide several advantages, among them, have:
Power division from top side/coastal waters to pump is simplified,
Due to equipment and power, control complexity so, space and cost are saved,
Make in the off-duty situation of compressor, compressor is discharged feasible,
By simplify control with the turbo-expander unit that can move in vast rotational velocity range,
Pump is controlled and is simplified,
Have steady antisurging system, the stream border of compressor surge is better,
By the period of not moving at pump, utilize unnecessary power/pressure difference to come UPS battery to charge.
The invention is not restricted to above-described embodiment.On the contrary, according to the teachings provided herein, those skilled in the art can expect many modification possibilities of the present invention, and do not depart from basic thought of the present invention.This modification can comprise a plurality of compressors and the pump of for example arranging in the compression system of seabed.Two or more compressors are predicted in another modification or compressor stage is in series arranged.In such an embodiment, interstage cooler can be arranged between the compressor or compressor stage of in series arranging.Also can imagine, the centre tap of pressurized gas and extracting part are arranged between the compressor or compressor stage of in series arranging, pressurized gas is fed to turbo-expander unit.
Inventor predicts the effect that provides same and these and other modification that can imagine of advantage, and should think that they are included in the scope of claims.
Claims (10)
1. a method of moving well stream Zhong seabed compression system, described compression system comprises compressor (1) and electrical motor driven formula pump (2), described compressor can move pressurized gas, and described pump can move pump out liquid from described compression system, described method comprises:
-the gas return line (11,12) that the downstream side of described compressor and the upstream side of described compressor are connected is provided;
-turbo-expander unit (10) are arranged to connect in stream with described gas return line (11,12);
-that described turbo-expander unit is connected to generator (17) in the mode of transmission is upper, and described generator configurations battery pair is carried charging current;
-in response to make pressurized gas circulation move described generator by described turbo-expander unit, come described battery (18) charging, and from the electric power of described battery, move described pump with supply.
2. method according to claim 1, is characterized in that, gas, by gas feed pipeline (8), is fed to described compressor (1) from be arranged in the container (3) of described upstream of compressor described well stream.
3. method according to claim 2, is characterized in that, the gas in described well stream and liquid mix, and from being configured to the container (3) of mixer, are fed to described compressor as homogeneous humid gas.
4. method according to claim 2, is characterized in that, the gas in described well stream and liquid are fed to respectively described compressor and described pump individually from being configured to the container (3) of separator.
5. method according to claim 2, is characterized in that, liquid discharges (24) to described container (3) from described compressor (1).
6. according to the method described in claim 2,4 or 5, it is characterized in that, described pump (2) moves in response to the liquid level detecting in described container (3) or compressor.
7. according to the method described in any one in claim 1 to 4, it is characterized in that, liquid is discharged into independent blowdown vessel (25 from described compressor (1); 26) in, and described pump (2) moves from described blowdown vessel and pumps out liquid in response to the liquid level measuring in described blowdown vessel or compressor.
8. according to the method described in any one in aforementioned claim, it is characterized in that, before described compression system starts, described pump (2) discharges described compression system with battery Power operation.
9. the seabed compression system for well stream, described compression system comprises compressor (1) and electrical motor driven formula pump (2), and described compressor can move pressurized gas, and described pump can move and from described compression system, pumps out liquid, it is characterized in that
-be arranged to gas return line (11,12) that the downstream side of described compressor and the upstream side of described compressor are connected,
-be arranged to and the turbo-expander unit (10) of described gas return line (11,12) in stream connection,
-described turbo-expander unit is connected on generator (17) in the mode of transmission, described power facility causes in response to make pressurized gas circulation by described turbo-expander unit battery (18) is carried to charging current, wherein, described pump can move from the electric power of described battery (18) in enough supplies.
10. compression system according to claim 9, is characterized in that, gas feed pipeline (8) is arranged to make described compressor (1) to be connected with the container (3) that is arranged in described upstream of compressor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20120748 | 2012-06-27 | ||
| NO20120748A NO334830B1 (en) | 2012-06-27 | 2012-06-27 | Apparatus and method for operating a subsea compression system in a well stream |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103511218A true CN103511218A (en) | 2014-01-15 |
| CN103511218B CN103511218B (en) | 2017-04-19 |
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|---|---|---|---|
| CN201310262022.0A Expired - Fee Related CN103511218B (en) | 2012-06-27 | 2013-06-27 | Apparatus and method for operating a subsea compression system in a well stream |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20140003963A1 (en) |
| EP (1) | EP2679766B1 (en) |
| CN (1) | CN103511218B (en) |
| AU (1) | AU2013206260B2 (en) |
| MY (1) | MY166506A (en) |
| NO (1) | NO334830B1 (en) |
| SG (1) | SG10201510355UA (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106982016A (en) * | 2016-01-15 | 2017-07-25 | 松下知识产权经营株式会社 | Turbo-compressor device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO335664B1 (en) * | 2013-04-30 | 2015-01-19 | Vetco Gray Scandinavia As | Method and system for collecting and evacuating drainage fluid in an underwater compression system |
| US10199975B2 (en) * | 2014-05-07 | 2019-02-05 | Aker Solutions As | Power supply assembly and associated method |
| NO339899B1 (en) * | 2015-05-14 | 2017-02-13 | Vetco Gray Scandinavia As | A control system for controlling a subsea gas compression system |
| NO20160240A1 (en) * | 2016-02-12 | 2017-08-14 | Fmc Kongsberg Subsea As | Pump |
| NO344474B1 (en) | 2018-06-25 | 2020-01-13 | Fmc Kongsberg Subsea As | Subsea compression system and method |
| CA3196160A1 (en) | 2020-09-14 | 2022-03-17 | Conocophillips Company | Method and apparatus for creating a small pressure increase in a natural gas stream |
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- 2013-06-07 EP EP13002950.7A patent/EP2679766B1/en not_active Not-in-force
- 2013-06-11 AU AU2013206260A patent/AU2013206260B2/en not_active Expired - Fee Related
- 2013-06-26 SG SG10201510355UA patent/SG10201510355UA/en unknown
- 2013-06-27 US US13/928,441 patent/US20140003963A1/en not_active Abandoned
- 2013-06-27 CN CN201310262022.0A patent/CN103511218B/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| NO20120748A1 (en) | 2013-12-30 |
| SG10201510355UA (en) | 2016-01-28 |
| EP2679766B1 (en) | 2016-08-17 |
| AU2013206260B2 (en) | 2017-03-30 |
| CN103511218B (en) | 2017-04-19 |
| EP2679766A2 (en) | 2014-01-01 |
| EP2679766A3 (en) | 2015-09-30 |
| MY166506A (en) | 2018-06-27 |
| US20140003963A1 (en) | 2014-01-02 |
| NO334830B1 (en) | 2014-06-10 |
| AU2013206260A1 (en) | 2014-01-16 |
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