CN106536853A - Compressor system, subsea production system provided therewith, and compressor cleaning method - Google Patents
Compressor system, subsea production system provided therewith, and compressor cleaning method Download PDFInfo
- Publication number
- CN106536853A CN106536853A CN201580038303.5A CN201580038303A CN106536853A CN 106536853 A CN106536853 A CN 106536853A CN 201580038303 A CN201580038303 A CN 201580038303A CN 106536853 A CN106536853 A CN 106536853A
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- Prior art keywords
- compressor
- hydrate
- antifreezing agent
- supply
- gas
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- 238000004140 cleaning Methods 0.000 title claims description 108
- 238000004519 manufacturing process Methods 0.000 title claims description 39
- 238000000034 method Methods 0.000 title claims description 34
- 230000004087 circulation Effects 0.000 claims abstract description 62
- 239000003795 chemical substances by application Substances 0.000 claims description 322
- 239000012530 fluid Substances 0.000 claims description 69
- 238000010438 heat treatment Methods 0.000 claims description 54
- 238000003860 storage Methods 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 29
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 230000036571 hydration Effects 0.000 claims description 14
- 238000006703 hydration reaction Methods 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000002528 anti-freeze Effects 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 6
- 239000007798 antifreeze agent Substances 0.000 claims description 2
- 238000007710 freezing Methods 0.000 abstract description 9
- 230000008014 freezing Effects 0.000 abstract description 9
- 150000004677 hydrates Chemical class 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 206
- 239000007789 gas Substances 0.000 description 149
- 239000003345 natural gas Substances 0.000 description 103
- 238000004364 calculation method Methods 0.000 description 28
- 238000005259 measurement Methods 0.000 description 27
- 239000010779 crude oil Substances 0.000 description 24
- 238000011144 upstream manufacturing Methods 0.000 description 11
- 239000003921 oil Substances 0.000 description 9
- 238000004891 communication Methods 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 6
- 238000005086 pumping Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000010148 water-pollination Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000010010 raising Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/705—Adding liquids
-
- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/36—Underwater separating arrangements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C50/00—Obtaining minerals from underwater, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0686—Units comprising pumps and their driving means the pump being electrically driven specially adapted for submerged use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
This compressor system is provided with a compressor (50) which compresses air, a compressed air circulation unit (52) which circulates air compressed by the compressor (50), a hydrate freezing prevention agent supply unit (53) which supplies to the compressed air circulation unit (52) a hydrate freezing prevention agent that prevents the aforementioned gas from forming hydrates, a compressor hydrate freezing prevention agent supply unit (54) which supplies to the compressor (50) a portion of the aforementioned hydrate freezing prevention agent supplied by the hydrate freezing prevention agent supply unit (53), and a pressure changing unit (59) which changes the pressure of the hydrate freezing prevention agent inside of the compressor (50).
Description
Technical field
The present invention relates to compressor assembly, the marine production system for possessing the compressor assembly and the cleaning side of compressor
Method.
Background technology
In the marine production system of exploitation seabed resources, draw in the producing well away from the depth in thousands of meters of seabed from excavating
Take and be mixed with the production fluids such as former oil and gas.In marine production system, the production fluid being drawn into washed device that
After the separator of sample is separated into the liquid such as the gases such as natural gas and crude oil, sea is delivered to via the flowline extended in seabed
The ship in face.Now, in order to the gases such as natural gas are delivered to the ship on sea and using the compressor for being arranged at seabed.
In such compressor for being arranged at seabed, caused by continuously running in the inside stream circulated for natural gas
Accumulate deposit in road.As a result, the flow for being capable of the natural gas of stream circulation internally can be reduced, as the effect of compressor
Rate can be reduced.
For such compressor, for example, Patent Document 1 discloses and the liquid isolated by separator is included
The part of the condensate as hydrocarbon supply the cleaning method cleaned to compressor.In the cleaning method of the compressor
In, decompose and remove deposit to clean the internal flow path of compressor by condensate.
Citation
Patent document
Patent document 1：International Publication No. 2013/185801
The content of the invention
Invention problem to be solved
However, in above-mentioned cleaning method, make use of the condensate from producing well collection.Therefore, it is possible to cannot be from
Producing well stably gathers the condensate of requirement.As a result, there are problems that being difficult to stably clean as compressor.
The present invention provides and can stably clean the compressor assembly of compressor, possess the marine production of the compressor assembly
The cleaning method of system and compressor.
Solution
In order to solve above-mentioned problem, the present invention proposes following scheme.
The compressor assembly of the first scheme of the present invention possesses：Compressor, which is compressed to gas；Compressed gas circulate
Portion, which is for being circulated by the gas after the compressor compresses；Hydrate antifreezing agent supply unit, which will be used for suppressing the gas
The hydrate antifreezing agent of hydration materialization is supplied to the compressed gas circulation portion；Compressor hydrate antifreezing agent supply unit, which will
Supplied from a part for the hydrate antifreezing agent of hydrate antifreezing agent supply unit supply to the compressor；And pressure
Power change section, which makes the pressure of the hydrate antifreezing agent inside the compressor change.
According to such structure, hydration materialization for the gas after suppressing by compressor compresses can be utilized and from hydration
The hydrate antifreezing agent that thing antifreezing agent supply unit is supplied to compressed gas circulation portion, effectively to remove what is separated out inside compressor
Deposit.By using one of the hydrate antifreezing agent supplied from hydrate antifreezing agent supply unit to compressed gas circulation portion
Point, the hydrate antifreezing agent of requirement can be stably supplied to compressor.By being made inside compressor by pressure change portion
Hydrate antifreezing agent pressure change, the hydrate antifreezing agent inside compressor can be stirred.Therefore, it is possible to effectively utilizes water
Compound antifreezing agent is cleaning the inside of compressor.
In above-mentioned compressor system, or, possess the gas row for discharging the gas inside the compressor
Go out portion, the compression of the compressor hydrate antifreezing agent supply unit to after by the gas discharge section discharge gas
Machine, the hydrate antifreezing agent is supplied to the compressor.
According to such structure, in the state of gas is discharged and does not almost residue in inside, water is supplied to compressor
Compound antifreezing agent simultaneously makes pressure change by pressure change portion.Therefore, it is possible to suppress the hydrate being supplied to inside compressor to prevent
Freeze agent by gas dilution.Therefore, it is possible to the hydrate antifreezing agent that will supply from compressor hydrate antifreezing agent supply unit efficiently
For the cleaning of compressor, the quantity delivered of hydrate antifreezing agent can be suppressed.
In above-mentioned compressor system, or, possess and the hydrate antifreezing agent be stored in the compressor
The reservoir in portion, the pressure change portion make the pressure of the hydrate antifreezing agent stored by the reservoir change.
According to such structure, by the state of hydrate antifreezing agent is stored in the inside of compressor by reservoir
Pressure change is made by pressure change portion, hydrate antifreezing agent can be efficiently stirred inside compressor.Therefore, it is possible to more effective
Ground cleans the inside of compressor using hydrate antifreezing agent.It is clear by not carrying out with discharging hydrate antifreezing agent from compressor
Wash, the cleaning that hydrate antifreezing agent is compressed machine to the quantity delivered of compressor can be reduced.
In above-mentioned compressor system, or, possess control unit, in the case where predetermined condition is met,
The control unit enter to exercise the compressor hydrate antifreezing agent supply unit start to supply the hydrate to the compressor it is antifreeze
The supply control of agent.
According to such structure, the supply control of hydrate antifreezing agent is carried out by using control unit, can be clear to needing
The compressor of the state washed restrictively supplies hydrate antifreezing agent.Therefore, it is possible to supply from compressor hydrate antifreezing agent
The hydrate antifreezing agent of portion's supply is efficiently used for the cleaning of compressor, can further suppress the supply of hydrate antifreezing agent
Amount.
In above-mentioned compressor system, or, the control unit has：First benchmark judging part, which is to the pressure
Whether the entrance side of contracting machine meets predetermined with the difference of the characteristic value of the gas of the outlet side of the compressor
One benchmark is judged；And supply starts instruction unit, which is judged as meeting first base in the first benchmark judging part
In the case of standard, send to the compressor hydrate antifreezing agent supply unit and start the hydrate antifreezing agent to the compressor
Supply finger not.
According to such structure, difference is calculated according to the characteristic value of the gas of the entrance side and outlet side of compressor, and
Compared with predetermined first benchmark by the first benchmark judging part and judged, thus, it is possible to easily deduction compressor be
It is no to become the state for needing cleaning.Start hydrate antifreezing agent to compression by starting instruction unit from supply based on judged result
The supply of machine, can implement the cleaning of compressor.Therefore, it is possible to judge whether compressor is to need the shape for cleaning with high accuracy
State, can more restrictively supply hydrate antifreezing agent.Thereby, it is possible to clear to needing from compressor hydrate antifreezing agent supply unit
The compressor washed more efficiently supplies hydrate antifreezing agent, can further suppress the quantity delivered of hydrate antifreezing agent.
In above-mentioned compressor system, or, possess the heating part heated to the hydrate antifreezing agent, institute
Compressor hydrate antifreezing agent supply unit is stated by the hydrate antifreezing agent after being heated from the heating part to the compressor
Supply.
According to such structure, heating part is provided by, the hydrate antifreezing agent of high temperature can be supplied to compressor.
It is heated by hydrate antifreezing agent and becomes high temperature, it is possible to increase solubility of the hydrate antifreezing agent to deposit.Accordingly, it is capable to
Enough raisings lodge in the dissolution velocity of the deposit of compressor and effectively clean compressor.
In above-mentioned compressor system, or, possess the heating part heated to the hydrate antifreezing agent, institute
State control unit to have：Second benchmark judging part, is starting by the hydrate antifreezing agent to after compressor supply, and this
The difference of entrance side of the two benchmark judging parts to the compressor and the characteristic value of the gas of the outlet side of the compressor
Whether meet predetermined second benchmark to be judged；And heating supply instruction unit, which is in the second benchmark judging part
In the case of being judged as meeting second benchmark, send to the compressor hydrate antifreezing agent supply unit and indicate with to described
Compressor supply is by the hydrate antifreezing agent after the heating of the heating part.
According to such structure, calculate poor by the characteristic value of the gas of entrance side and outlet side according to compressor
Point, and compared with the second benchmark by the second benchmark judging part and judged easily whether can infer compressor again
Becoming needs the state of cleaning.Thus it is for example possible to easily infer the compressors different from situation about judging using the first benchmark
State.By being indicated with will be the hydrate after being heated by heating part antifreeze by heating supply instruction unit and send based on judged result
Agent is supplied to compressor, can use heated and hydrate antifreezing agent that become high temperature more effectively to clean compressor.Cause
This, can implement the cleaning of strength as needed to compressor.Thereby, it is possible in the state that compressor is the cleaning for needing strength
In the case of, be effectively supplying heating after hydrate antifreezing agent and be more efficiently compressed the cleaning of machine.
The marine production system of the alternative plan of the present invention possesses：The compressor assembly；And separator, which is made from life
The production fluid that product well is drawn into is separated into the gas and liquid, and the gas and liquid are supplied to the compressor.
According to such structure, even if being disposed on the compressor of the position that seabed etc. is difficult to safeguard, it is also possible to it is stable and
Efficiently cleaned.Therefore, it is possible to the blocking for suppressing to be caused by deposit, gas can stably be conveyed by compressor.
The cleaning method of the compressor of the third program of the present invention is cleaned to the compressor of compressed gas, wherein, institute
The cleaning method for stating compressor includes：Gas discharges operation, discharges in operation in the gas, discharges the institute inside the compressor
State gas；Compressor hydrate antifreezing agent supply step, in the compressor hydrate antifreezing agent supply step, hydrate is prevented
The part for freezing agent discharges the compressor supply after the operation discharge gas to by the gas, and the hydrate is prevented
Freeze agent to the compressed gas circulation portion supply supplied by the gas circulation after the compressor compresses and for suppressing the gas
Hydration materialization；And pressure change operation, in the pressure change operation, make the hydrate antifreezing agent in the compressor
Pressure change.
According to such structure, in compressor hydrate antifreezing agent supply step, do not prepare again and supply hydrate
Antifreezing agent, but using a part for the hydrate antifreezing agent to the supply of compressed gas circulation portion.Therefore, it is possible to by requirement
Hydrate antifreezing agent is stably supplied in compressor.Discharge in operation in gas, discharge gas to outside from compressor.Therefore,
In pressure change operation, can be discharged in gas and in the state of almost not residuing in inside, pressure is made by pressure change portion
The pressure change of the hydrate antifreezing agent inside contracting machine.It is antifreeze therefore, it is possible to suppress to be supplied to hydrate inside compressor
Agent is by gas dilution and stirs the hydrate antifreezing agent inside compressor.As a result, can efficiently and effectively using hydration
Thing antifreezing agent is cleaning the inside of compressor.Thereby, it is possible to the hydrate antifreezing agent that supply comes is efficiently used for compressor
Cleaning, while can suppressing the quantity delivered of hydrate antifreezing agent, stably and effectively cleans compressor.
In the cleaning method of above-mentioned compressor, or, be stored in the pressure including by the hydrate antifreezing agent
Storage operation inside contracting machine, the pressure change operation make the hydrate antifreezing agent by the storage operation storage
Pressure changes.
According to such structure, the state of the inside by hydrate antifreezing agent to be stored in storage operation compressor
Under pressure change is made by pressure change portion, can efficiently stir hydrate antifreezing agent inside compressor.Therefore, it is possible to more have
Effect ground is cleaned to the inside of compressor using hydrate antifreezing agent.By not discharging hydrate antifreezing agent ground from compressor
Cleaned, the cleaning that hydrate antifreezing agent is compressed machine to the quantity delivered of compressor can be reduced.
In the cleaning method of above-mentioned compressor, or, including：First benchmark judgment step, in first benchmark
In judgment step, to the entrance side and the difference of the characteristic value of the gas of the outlet side of the compressor of the compressor it is
It is no to meet predetermined first benchmark and judged；And supply starts operation, by the first benchmark judgment step
In the case of being judged as meeting first benchmark, start in operation in the supply, start the water to be supplied to the compressor
Compound antifreezing agent.
According to such structure, difference is calculated according to the characteristic value of the gas of the entrance side and outlet side of compressor and is led to
Cross the first benchmark judgment step to compare with the first benchmark and judged, thus, it is possible to easily infer whether compressor becomes needs
The state of cleaning.Judged result can be based on and pass through supply beginning operation and start hydrate antifreezing agent, energy to be supplied to compressor
Enough implement the cleaning of compressor.Therefore, it is possible to judge whether compressor is to need the state cleaned with high accuracy, more can limit
Property ground supply hydrate antifreezing agent.Hydrate thereby, it is possible to will come from the supply of compressor hydrate antifreezing agent supply unit is antifreeze
Agent more efficiently to the compressor supply for needing cleaning, can further suppress the quantity delivered of hydrate antifreezing agent.
In the cleaning method of above-mentioned compressor, it is also possible to include：Second benchmark judgment step, judges in second benchmark
In operation, after starting to supply the compressor to the hydrate antifreezing agent, entrance side and the pressure to the compressor
Whether the difference of the characteristic value of the gas of the outlet side of contracting machine meets predetermined second benchmark is judged；And plus
Heat supply operation, in the case where being judged as meeting second benchmark by the second benchmark judgment step, in the heating
In supply step, by heating after the hydrate antifreezing agent supply to the compressor.
According to such structure, difference is calculated according to the characteristic value of the gas of the entrance side and outlet side of compressor,
And compared with the second benchmark by the second benchmark judgment step and judged, thus, it is possible to easily whether infer compressor again
To need the state of cleaning.Thus, for example, the different pressure of the situation for being from judging using the first benchmark easily can be inferred whether
The state (for example, if to need the state of the cleaning that more strength is carried out to compressor) of contracting machine.By based on judged result
The hydrate antifreezing agent for being heated as high temperature is supplied to compressor from heating supply step, can be more effectively real to compressor
Apply cleaning.Therefore, it is possible to the cleaning for implementing strength to compressor as desired.Thereby, it is possible to compressor for need strength
Cleaning state in the case of be effectively supplying heating after hydrate antifreezing agent and more efficiently clean compressor.
Invention effect
According to the present invention, the hydrate of the compressed gas circulation portion supply by circulating to the gas supplied after compression is antifreeze
A part for agent is supplied into compressor and makes pressure send change, can efficiently be compressed the cleaning of machine.
Description of the drawings
Fig. 1 be to embodiments of the present invention in the schematic diagram that illustrates of marine production system.
Fig. 2 is the system diagram illustrated to the subsea module in embodiments of the present invention.
Fig. 3 is the block diagram illustrated to the control unit in embodiments of the present invention.
Fig. 4 is the process chart illustrated to the cleaning method of the compressor in embodiments of the present invention.
Specific embodiment
Hereinafter, embodiment involved in the present invention is illustrated referring to figs. 1 to Fig. 4.
Marine production system 1 involved by embodiments of the present invention is the sea as one of marine oil gas field development scheme
Middle production system (Subsea Production System).As shown in figure 1, marine production system 1 possesses：To from being present in sea
The producing well that production fluids PF such as mixed crude O that the oil gas field F that hundred～thousands of meters of the truth of a matter is produced and natural gas G are acquired
W；Make to be concentrated and the manifold M of branch by production fluid PF that producing well W is collected；To by production fluid PF after manifold M branches
The pipe arrangement carried i.e. flowline FL；And that production fluid PF carried out by flowline FL is separated into liquid is gentle
Body is simultaneously delivered to subsea module SM on sea.Marine production system 1 possesses：Crude oil O and day are carried from subsea module SM to sea
So the pipe arrangement of gas G is standpipe R；It is umbilical line AL to the cable of the supply electric powers such as subsea module SM；And mooring on sea and
Be connected with standpipe R and umbilical line AL, and storage of crude oil O and natural gas G ship S.
Manifold M is arranged near the producing well W of the oil gas field F in seabed.Manifold M is production fluid PF by arriving exploitation
Concentrate and branch and to multiple flowline FL carry device.
Flowline FL is that production fluid PF is sent to subsea module SM from manifold M using the pressure energy of oil gas field F
Pipeline.
Standpipe R extends to the ship S on sea from subsea module SM in seabed.It is respectively provided with the standpipe R of present embodiment
Have：The crude oil O sent from subsea module SM is carried to the petroleum pipeline of the hold-up tank (not shown) of the ship S for being configured at sea
OR；And the natural gas G sent from subsea module SM is carried to the appendix GR of hold-up tank.It is also equipped with from ship in standpipe R
S supplies the hydrate antifreezing agent pipeline AR of hydrate antifreezing agent to the appendix GR of supply natural gas G, to avoid natural gas
G freezes because being hydrated materialization in seabed.
Umbilical line AL be with for control the electric power cable of subsea module SM, oil pressure cable, signal cable it is compound
Cable.By umbilical line AL, electric power and signal are delivered to subsea module SM and manifold by the generator (not shown) from ship S
M。
Production fluid PF supplied via flowline FL is separated into gas and liquid by subsea module SM, and by gas and
Liquid distinguishes force feed to sea.As shown in Fig. 2 subsea module SM of present embodiment possesses：The life that will be drawn into from producing well W
Produce the main heat exchanger 2 of fluid PF coolings；Production fluid PF after making to be cooled down by main heat exchanger 2 is separated into gas and liquid
Separator 3；The liquid isolated by separator 3 is delivered to into the pumping system 4 of standpipe R；And the gas that will be isolated by separator 3
Deliver to the compressor assembly 5 of standpipe R.
The production fluid PF cooling of high temperature that main heat exchanger 2 will be drawn from producing well W and send in flowline FL
The temperature that extremely can be used by separator 3.The main heat exchanger 2 of present embodiment is by carrying out heat with the seawater of the low temperature in seabed
Exchange to cool down production fluid PF.
Separator 3 makes production fluid PF be separated into the natural gas G as the gas and crude oil O as liquid.This embodiment party
The separator 3 of formula is washer.Separator 3 isolates natural gas G from production fluid PF and the crude oil O comprising condensate.Separate
The crude oil O for isolating is delivered to pumping system 4 by device 3.The natural gas G for isolating is delivered to compressor assembly 5 by separator 3.
Pumping system 4 will deliver to petroleum pipeline OR after the crude oil O sent from separator 3 compressions.As shown in Fig. 2 pumping system 4 has
It is standby：The pump 41 is compressed by crude oil O；Crude oil O is delivered to into the liquid communication portion 42 of pump 41 from separator 3；For being compressed by pump 41
The compressed liquid throughput 43 of crude oil O circulations afterwards.
The crude oil O that pump 41 pairs is sent is compressed and sends.
Crude oil O is supplied to pump 41 by liquid communication portion 42 from separator 3.Specifically, the liquid communication of present embodiment
Portion 42 is the pipe arrangement that pump 41 is connected to from separator 3.Liquid communication portion 42 makes crude oil O internally circulate.
Crude oil O after being compressed by pump 41 is delivered to petroleum pipeline OR by compressed liquid throughput 43.Specifically, present embodiment
Compressed liquid throughput 43 be the pipe arrangement that petroleum pipeline OR is connected to from pump 41.Compressed liquid throughput 43 makes the crude oil after compression
O internally circulates.
5 couples of natural gas G sent from separator 3 of compressor assembly are compressed and deliver to appendix GR.As shown in Fig. 2
Compressor assembly 5 possesses：The compressor 50 is compressed by natural gas G；Natural gas G is delivered to into compressor 50 from separator 3
Gas throughput 51；And the compressed gas circulation portion 52 of the natural gas G circulations after supplying to be compressed by compressor 50.Compressor assembly
5 possess：To supply to the hydrate in compressed gas circulation portion 52 for the hydrate antifreezing agent for suppressing the hydration materialization of natural gas G
Antifreezing agent supply unit 53；A part for the hydrate antifreezing agent supplied by hydrate antifreezing agent supply unit 53 is supplied to compressor
50 compressor hydrate antifreezing agent supply unit 54；The heating part 55 heated by hydrate antifreezing agent.Compressor assembly 5 has
It is standby：The reservoir 56 hydrate antifreezing agent being stored in inside compressor 50；Bypass compressor 50 and by natural gas G to compressed gas
The bypass supply unit 57 of the supply of body throughput 52；Discharge the gas discharge section 58 of the natural gas G inside compressor 50；Make compressor
The pressure change portion 59 that the pressure of the hydrate antifreezing agent inside 50 changes；And compressor hydrate antifreezing agent is supplied
Enter to exercise the control unit 60 of the supply control that the supply of hydrate antifreezing agent starts in portion 54.
Compressor 50 is natural by what is supplied from the gas throughput 51 of the upstream side of the circulating direction for being configured at natural gas G
Gas G compresses and sends to the compressed gas circulation portion 52 for being configured at downstream.The compressor 50 of present embodiment possesses multiple leaves
The centrifugal compressor of the multi-stag of wheel.
Natural gas is supplied to compressor 50 by gas throughput 51 from separator 3.Specifically, as shown in Fig. 2 this enforcement
The gas throughput 51 of mode is the pipe arrangement that compressor 50 is connected to from separator 3.Gas throughput 51 makes natural gas G internally
Circulation.The gas throughput 51 of present embodiment has for determining the characteristic value of natural gas G in the entrance side of compressor 50
Entrance side characteristic value measurement unit 511.
Entrance side characteristic value measurement unit 511 determines to compressor 50 characteristic value of the natural gas G for flowing into.Entrance side characteristic value
Determination part 511 is arranged on the entrance of the compressor 50 of gas throughput 51.The entrance side characteristic value of present embodiment is determined
Portion 511 is the pressure sensor for determining the pressure value as characteristic value.Entrance side characteristic value measurement unit 511 is natural by what is determined
The pressure value of gas G is sent to control unit 60.
Compressed gas circulation portion 52 the natural gas G after being compressed by compressor 50 is delivered to into standpipe R.Specifically, this enforcement
The compressed gas circulation portion 52 of mode is the pipe arrangement that appendix GR is connected to from compressor 50.Compressed gas circulation portion 52 makes compression
Natural gas G afterwards internally circulates.The compressed gas circulation portion 52 of present embodiment has in the outlet side of compressor 50 to be used for
Determine the outlet side characteristic value measurement unit 521 of the characteristic value of the natural gas G of gas.
Outlet side characteristic value measurement unit 521 determines from compressor 50 characteristic value of the natural gas G for flowing out.Outlet side characteristic value
Determination part 521 is arranged on the near exit of the compressor 50 in compressed gas circulation portion 52.The outlet side characteristic value of present embodiment
Determination part 521 is with entrance side characteristic value measurement unit 511 again it is determining the pressure sensor of the pressure value as characteristic value.Go out
Mouth side characteristic value measurement unit 521 sends the pressure value of the natural gas G for determining to control unit 60.
Hydrate antifreezing agent supply unit 53 makes the hydration supplied from the ship S on sea via hydrate antifreezing agent pipeline AR
Thing antifreezing agent is circulated to compressed gas circulation portion 52.The hydrate antifreezing agent supply unit 53 of present embodiment is antifreeze from hydrate
Agent pipeline AR is connected to the pipe arrangement in compressed gas circulation portion 52.Hydrate antifreezing agent supply unit 53 is made including hydrate antifreezing agent
Circulate in portion.Hydrate antifreezing agent supply unit 53 is provided with outlet side characteristic value measurement unit 521 with the ratio in compressed gas circulation portion 52
Position downstream position connection.
It should be noted that as the hydrate antifreezing agent of present embodiment, preferably using with lipophile and hydrophily
Fluid.As hydrate antifreezing agent, particularly preferably use for example in order to prevent the hydration materialization of natural gas G and suppress hydrate
The ethylene glycol changed and use.
Compressor hydrate antifreezing agent supply unit 54 will be the hydrate flowed in hydrate antifreezing agent supply unit 53 antifreeze
A part for agent is supplied to compressor 50.Specifically, the compressor hydrate antifreezing agent supply unit 54 of present embodiment has
Supply pipe 541 from 53 branch of hydrate antifreezing agent supply unit, and to the hydrate antifreezing agent that flows in supply pipe 541
The supply valve 542 that flowing is adjusted.
Supply pipe 541 is connected from 53 branch of hydrate antifreezing agent supply unit and with gas throughput 51.Specifically, this reality
The supply pipe 541 of mode is applied than entrance side characteristic value measurement unit 511 by upstream side and than the first flowing valve described later 561 on the lower
The position of trip side is connected with gas throughput 51.
Supply valve 542 is adjusted to the supply of the inside of supply pipe 541 to hydrate antifreezing agent.Specifically, this reality
The supply valve 542 for applying mode stops hydrate antifreezing agent to the supply in supply pipe 541 by being blocked for.Supply valve 542 leads to
Cross and be opened and start hydrate antifreezing agent to the supply in supply pipe 541.Supply valve 542 is to control its opening by control unit 60
And the magnetic valve of the action of obturation.
Heating part 55 is arranged at compressor hydrate antifreezing agent supply unit 54 and hydrate antifreezing agent is heated.This reality
The heating part 55 for applying mode is arranged at 542 downstream of supply valve and supply pipe 541 and liquid communication portion 42 than supply pipe 541
The position for intersecting.The heat of crude oil O of the heating part 55 by being flowed from the utilization of 60 input signal of control unit in pumping system 4
To heat to hydrate antifreezing agent.Specifically, heating part 55 for example will be existed with 20 DEG C to 50 DEG C or so of atmosphere temperature
In supply pipe 541, the hydrate antifreezing agent of flowing is that monoethylene glycol is heated to becoming more than 110 DEG C of high temperature.
Reservoir 56 will supply next hydrate antifreezing agent from compressor hydrate antifreezing agent supply unit 54 and be stored in compression
The inside of machine 50.The reservoir 56 of present embodiment have be arranged at compressor 50 entrance side the first flowing valve 561, and
It is arranged at the second flowing valve 562 of the outlet side of compressor 50.
Supply of first flowing valve 561 to the natural gas G of the inside of gas throughput 51 is adjusted.Specifically, originally
First flowing valve 561 of embodiment is arranged at the entrance side characteristic value measurement unit 511 than gas throughput 51 by upstream side
Position.First flowing valve 561 of present embodiment stops natural gas G to the supply in gas throughput 51 by being blocked for.
First flowing valve 561 starts natural gas G to the supply in gas throughput 51 by being opened.First flowing valve 561 be by
Its opening of the control of control unit 60 and the magnetic valve of the action of obturation.
Second flowing valve 562 is carried out to the natural gas G of the inside in compressed gas circulation portion 52, the supply of hydrate antifreezing agent
Adjustment.Specifically, the second flowing valve 562 of present embodiment is arranged at the outlet side characteristic value than compressed gas circulation portion 52
The position of 521 downstream of determination part.Second flowing valve 562 of present embodiment stops natural gas G, hydration by being blocked for
Thing antifreezing agent is to the supply in compressed gas circulation portion 52.Second flowing valve 562 starts natural gas G, hydration by being opened
Thing antifreezing agent is to the supply in compressed gas circulation portion 52.Second flowing valve 562 is controlled its opening and closed by control unit 60
The magnetic valve of the action of plug.
Bypass supply unit 57 is by the natural gas G circulated in gas throughput 51 without 50 ground of compressor to compressed gas
Throughput 52 is supplied.The bypass supply unit 57 of present embodiment is with the bypass pipe 571 from 51 branch of gas throughput, and right
The by-passing valve 572 that the flowing of the natural gas G flowed in bypass pipe 571 is adjusted.
Bypass pipe 571 is connected from 51 branch of gas throughput and with compressed gas circulation portion 52.Specifically, this embodiment party
The bypass pipe 571 of formula is leaning on position and the gas circulation of upstream side than entrance side characteristic value measurement unit 511, the first flowing valve 561
Portion 51 connects.Bypass pipe 571 is than outlet side characteristic value measurement unit 521, the position of 562 downstream of the second flowing valve and compression
Gas throughput 52 connects.
By-passing valve 572 is adjusted to the supply of the inside of bypass pipe 571 to natural gas G.Specifically, present embodiment
By-passing valve 572 made by being blocked for natural gas G in bypass pipe 571 supply stop.By-passing valve 572 by being opened and
Natural gas G is made to start to the supply in bypass pipe 571.By-passing valve 572 be by control unit 60 control its open and obturation it is dynamic
The magnetic valve of work.
Gas discharge section 58 by the natural gas G inside compressor 50, hydrate antifreezing agent from compressed gas circulation portion 52 to
It is outside to discharge.The gas discharge section 58 of present embodiment is with the discharge pipe 581 from 52 branch of compressed gas circulation portion, in row
The information of the fluid of circulation is measured in outlet pipe 581 fluid information determination part 582, and to flowing in discharge pipe 581
Natural gas G, the dump valve 583 that is adjusted of the flowing of hydrate antifreezing agent.
Discharge pipe 581 is connected from 52 branch of compressed gas circulation portion and with outlet (not shown).Specifically, this enforcement
The discharge pipe 581 of mode than 521 downstream of outlet side characteristic value measurement unit and than the second flowing valve 562 by upstream side position
Put from 52 branch of compressed gas circulation portion.
The species of the fluid of 582 pairs of circulations in discharge pipe 581 of fluid information determination part, temperature are measured.Fluid is believed
Breath determination part 582 is arranged at the upstream side of the dump valve 583 of discharge pipe 581.The fluid information determination part 582 of present embodiment is
The sensor that the species of the fluid to circulating in discharge pipe 581, temperature are measured.The information measurement portion of present embodiment
Whether the species of the fluid that 582 detections are circulated in discharge pipe 581 has changed, whether the temperature of fluid has changed and to control unit
60 mail messages.Specifically, the fluid of circulation is switched to by the fluid information determination part 582 of present embodiment from natural gas G
This information of hydrate antifreezing agent, the temperature of hydrate antifreezing agent rise this information and cut from hydrate antifreezing agent
Change natural gas G this information into convey to control unit 60.
Dump valve 583 is adjusted to the supply of the inside of discharge pipe 581 to natural gas G, hydrate antifreezing agent.It is concrete and
Speech, the dump valve 583 of present embodiment make natural gas G, hydrate antifreezing agent to the supply in discharge pipe 581 by being blocked for
Stop.Dump valve 583 makes natural gas G, hydrate antifreezing agent start to the supply in discharge pipe 581 by being opened.Discharge
Valve 583 is the magnetic valve that its opening and the action of obturation are controlled by control unit 60.
Pressure change portion 59 is by making the hydrate antifreezing agent circulated in compressor hydrate antifreezing agent supply unit 54
Pressure change is making the pressure change of the hydrate antifreezing agent inside inflow compressor 50.Specifically, the pressure of present embodiment
Power change section 59 is the boosting pump for rising or falling the pressure of the hydrate antifreezing agent of flowing in supply pipe 541.Pressure
Change section 59 is by 60 drive control of control unit.In the pressure change portion 59 of present embodiment, from air pressure or so to compression
Maximum in the design of machine 50 uses prominent pressure (such as 200bar) scope below by the use of as the circulation of hydrate antifreezing agent
Monoethylene glycol pressurization regulation time.
Control unit 60 enters to exercise the supply control that the cleaning of compressor 50 starts in the case where predetermined condition is met
System.The control unit 60 of present embodiment supplies hydrate antifreezing agent to compressor 50, makes the hydrate antifreezing agent in compressor 50
Pressure change.
Specifically, as shown in figure 3, the control unit 60 of present embodiment has：First input unit 61, which is transfused to by entering
The characteristic value that mouth side characteristic value measurement unit 511 is determined；Second input unit 62, which is transfused to by outlet side characteristic value measurement unit
521 characteristic values for determining；And Difference Calculation portion 63, which calculates the characteristic value of input to the first input unit 61 and is input into the
The difference of the characteristic value of two input units 62.The control unit 60 of present embodiment has：First benchmark judging part 64, which is judged by poor
Divide whether the difference that calculating part 63 is calculated meets predetermined first benchmark；Supply starts instruction unit 65, and which is based on first
The judged result of benchmark judging part 64 and sending makes the instruction that hydrate antifreezing agent starts to the supply of compressor 50；And storage
Discharge instruction unit 71, its judged result based on the first benchmark judging part 64 and by inside compressor 50 natural gas G discharge simultaneously
Storage hydrate antifreezing agent.
The control unit 60 of present embodiment has：Second benchmark judging part 66, which judges to be calculated by Difference Calculation portion 63
Difference whether meet predetermined second benchmark；Heating supply instruction unit 67, which is sentenced based on the second benchmark judging part 66
Disconnected result sends and indicates the hydrate antifreezing agent after being heated from heating part 55 is supplied to compressor 50；And cleaning end refers to
Show portion 70, its judged result based on the second benchmark judging part 66 and sending makes the instruction that the cleaning of compressor 50 terminates.This reality
The control unit 60 for applying mode has：Supply valve instruction unit 68, which makes supply valve 542 open or inaccessible based on the signal being transfused to；
First flowing valve instruction unit 72, which makes the first flowing valve 561 open or inaccessible based on the signal being transfused to；And second flowing valve
Instruction unit 73, which makes the second flowing valve 562 open or inaccessible based on the signal being transfused to.
The control unit 60 of present embodiment has：By-passing valve instruction unit 74, which makes by-passing valve 572 based on the signal being transfused to
It is open or inaccessible；With dump valve instruction unit 75, which makes dump valve 583 open or inaccessible based on the signal being transfused to.This embodiment party
The control unit 60 of formula has：Fluid information input unit 76, which is transfused to the information determined by fluid information determination part 582；Pressure
Power changes instruction unit 77, and which sends and indicates with driving pressure change section 59；And compressor operation adjustment portion 78, its transmission makes pressure
Contracting machine 50 starts running and adjusts operating condition until it becomes the instruction of steady running.
First input unit 61 is transfused to the pressure value of the natural gas G determined by entrance side characteristic value measurement unit 511.First
The information of the pressure value being transfused to is exported by input unit 61 to Difference Calculation portion 63, compressor operation adjustment portion 78.
Second input unit 62 is transfused to the pressure value of the natural gas G determined by outlet side characteristic value measurement unit 521.Second
The information of the pressure value being transfused to is exported by input unit 62 to Difference Calculation portion 63, compressor operation adjustment portion 78.
Difference Calculation portion 63 calculates from the pressure value of the outlet side of the compressor being input into by the second input unit 62 and deducts by
Difference after the pressure value of the entrance side of the compressor of the input of one input unit 61.Difference Calculation portion 63 by the difference for being calculated to
First benchmark judging part 64 is exported.Difference Calculation portion 63 is after exporting to the first benchmark judging part 64 again from the first input unit
61 and second input unit 62 be transfused to information in the case of, the difference for being calculated is exported to the second benchmark judging part 66.
First benchmark judging part 64 compares the information of the first benchmark and the difference from the input of Difference Calculation portion 63.Here, the
One benchmark be represent in deposit separate out and the stream of the inside of compressor 50 narrow, needs cleaning state situation
Value.First benchmark of present embodiment be set to than cleaning in the case of compressed by the compressor 50 of usual state
Natural gas G pressure the little value of rising value.That is, the first benchmark of present embodiment is to contain deposit and natural gas G
The value of the difference of the entrance side of the compressor 50 of the state almost do not compressed and the pressure of outlet side.
Whether the first benchmark judging part 64 of present embodiment judges the value of the difference being transfused to less than the first benchmark.First
Benchmark judging part 64 is being judged as opening to supply in the case that calculated difference meets the first benchmark less than the first benchmark
71 sending signal of instruction unit is discharged in beginning instruction unit 65, storage.First benchmark judging part 64 is being judged as calculated difference height
To 78 sending signal of compressor operation adjustment portion in the case that the first benchmark does not meet the first benchmark.
Supply starts instruction unit 65 in the case where the first benchmark judging part 64 is judged as meeting the first benchmark, to compressor
Hydrate antifreezing agent supply unit 54 sends the instruction for making hydrate antifreezing agent start to the supply of compressor 50.Present embodiment
Supply start instruction unit 65 by by from 64 input signal of the first benchmark judging part to 68 sending signal of supply valve instruction unit with
Open supply valve 542.
Storage discharges instruction unit 71 in the case where the first benchmark judging part 64 is judged as meeting the first benchmark, to reservoir
56th, supply unit 57, gas discharge section 58 are bypassed instruction is sent so as to natural gas G be discharged from inside compressor 50 and in compressor 50
Inner product water compound antifreezing agent.The storage of present embodiment discharge instruction unit 71 to 72 sending signal of the first flowing valve instruction unit with
Make the first flowing valve 561 inaccessible.Storage discharges instruction unit 71 to 73 sending signal of the second flowing valve instruction unit so that the second circulation
Valve 562 is inaccessible.Storage discharges instruction unit 71 to 74 sending signal of by-passing valve instruction unit so that by-passing valve 572 is opened.Storage is discharged
Instruction unit 71 is to 75 sending signal of dump valve instruction unit so that dump valve 583 is opened.
Second benchmark judging part 66 compares the information of the second benchmark and the difference from the input of Difference Calculation portion 63.Here, the
Two benchmark are that the deposit of the stream for representing the inside in compressor 50 is not sufficiently removed and needs the cleaning of more strength
The value of the situation of state.Second benchmark of present embodiment is set to the natural gas than being compressed by the compressor 50 of usual state
Little and bigger than the first benchmark value of the rising value of the pressure of G.That is, the second benchmark of present embodiment is the compressor of following state
The value of the difference of 50 entrance side and the pressure of outlet side, the state are once to be cleaned and although result is less than satisfaction first
The degree of benchmark but the state for having deposit so as to natural gas G is not sufficiently compressed in 50 internal residual of compressor.
Whether the second benchmark judging part 66 of present embodiment judges the value of the difference being transfused to less than the second benchmark.Second
Benchmark judging part 66 is being judged as supplying to heating in the case that calculated difference meets the second benchmark less than the second benchmark
Give instruction unit 67 sending signal.Second benchmark judging part 66 be judged as calculated difference higher than the second benchmark and do not meet
To 70 sending signal of cleaning termination instruction portion in the case of second benchmark.
Heating supply instruction unit 67 sends in the case where the second benchmark judging part 66 is judged as meeting the second benchmark and indicates
So that the hydrate antifreezing agent after being heated from heating part 55 is supplied to compressor 50.The heating supply instruction unit 67 of present embodiment
By by from 66 input signal of the second benchmark judging part to 55 sending signal of heating part so that the heating of hydrate antifreezing agent is opened
Begin.
Termination instruction portion 70 is cleaned in the case where the second benchmark judging part 66 is judged as not meeting the second benchmark, to compression
Machine hydrate antifreezing agent supply unit 54 sends and indicates so that the cleaning of compressor 50 terminates.The cleaning termination instruction of present embodiment
Portion 70 by by from 66 input signal of the second benchmark judging part to supply valve instruction unit 68, the first flowing valve instruction unit 72,
75 sending signal of two flowing valve instruction units 73 and dump valve instruction unit.
Specifically, the cleaning termination instruction portion 70 of present embodiment is to 68 sending signal of supply valve instruction unit so that supply
Valve 542 is inaccessible.Cleaning termination instruction portion 70 is to 72 sending signal of the first flowing valve instruction unit so that the first flowing valve 561 is opened.
Cleaning termination instruction portion 70 is to 73 sending signal of the second flowing valve instruction unit so that the second flowing valve 562 is opened.Cleaning end refers to
Show portion 70 to 75 sending signal of dump valve instruction unit so that dump valve 583 is opened.
Supply valve instruction unit 68 by by from supply start 65 input signal of instruction unit and to supply valve 542 sent instruction with
Open supply valve 542.Supply valve instruction unit 68 is by by from 70 input signal of cleaning termination instruction portion to supply valve 542
Instruction is sent so that supply valve 542 is inaccessible.
First flowing valve instruction unit 72 by discharged 71 input signal of instruction unit from storage and to the first flowing valve 561
Instruction is sent so that the first flowing valve 561 is inaccessible.First flowing valve instruction unit 72 is by being input into letter from cleaning termination instruction portion 70
Number and to the first flowing valve 561 send indicate so that the first flowing valve 561 is opened.
Second flowing valve instruction unit 73 by discharged 71 input signal of instruction unit from storage and to the second flowing valve 562
Instruction is sent so that the second flowing valve 562 is inaccessible.Second flowing valve instruction unit 73 is by being input into letter from cleaning termination instruction portion 70
Number and to the second flowing valve 562 send indicate so that the second flowing valve 562 is opened.
By-passing valve instruction unit 74 by by from storage discharge 71 input signal of instruction unit and to by-passing valve 572 sent instruction with
Open by-passing valve 572.By-passing valve instruction unit 74 is by by from 78 input signal of compressor operation adjustment portion to by-passing valve 572
Send and indicate so that by-passing valve 572 is inaccessible.
Dump valve instruction unit 75 by by from storage discharge 71 input signal of instruction unit and to dump valve 583 sent instruction with
Open dump valve 583.Dump valve instruction unit 75 is by by from 70 input signal of cleaning termination instruction portion to dump valve 583
Instruction is sent so that dump valve 583 is opened.Dump valve instruction unit 75 is by by from 76 input signal of fluid information input unit to row
Go out 583 output indication of valve so that dump valve 583 is inaccessible.
Fluid information input unit 76 is based on the species of the fluid determined by fluid information determination part 582, the information of temperature
Come to dump valve instruction unit 75, pressure change instruction unit 77,78 sending signal of compressor operation adjustment portion.
Specifically, the fluid information input unit 76 of present embodiment be transfused to the fluid that flows in discharge pipe 581 from
Natural gas G switch to hydrate antifreezing agent this from fluid information determination part 582 information.As a result, fluid information is defeated
Enter portion 76 to 75 sending signal of dump valve instruction unit so that dump valve 583 is inaccessible, to 77 sending signal of pressure change instruction unit with
Driving pressure change section 59.
Fluid information input unit 76 is transfused to the temperature of the hydrate antifreezing agent flowed in discharge pipe 581 and rises this
From the information in fluid information measurement portion 582.As a result, fluid information input unit 76 is to 77 sending signal of pressure change instruction unit
With driving pressure change section 59.
Fluid information input unit 76 be transfused to from hydrate antifreezing agent switch to natural gas G this from fluid information determine
The information in portion 582.As a result, fluid information input unit 76 is to 75 sending signal of dump valve instruction unit so that dump valve 583 is closed
Plug, to 78 sending signal of compressor operation adjustment portion starting the operating of compressor 50.
Pressure change instruction unit 77 is by by from 76 input signal of fluid information input unit driving pressure change section 59.
Compressor operation adjustment portion 78 starts the operating of compressor 50.78 one side of compressor operation adjustment portion is based on compressor
50 entrance side and the pressure value of outlet side and monitor that the operational situation of compressor 50 sends instruction to compressor 50 on one side, thus
The operating condition of adjustment compressor 50 is until it becomes steady running.
Specifically, the compressor operation adjustment portion 78 of present embodiment is by from the first benchmark judging part 64, fluid information
76 input signal of input unit.As a result, compressor operation adjustment portion 78 sends the instruction for making compressor 50 start running.Compression
Machine operates adjustment portion 78 by the information from the first input unit 61,62 input pressure value of the second input unit.Compressor operation adjustment portion
78 information based on the pressure value being transfused to and to 74 sending signal of by-passing valve instruction unit so that by-passing valve 572 is gradually inaccessible.More
Specifically, compressor operation adjustment portion 78 accordingly sends the letter of the aperture of adjustment by-passing valve 572 with the pressure value being transfused to
Number.As a result, compressor operation adjustment portion 78 monitors the operational situation of compressor 50 while adjusting the fortune of compressor 50
Turn state until it becomes steady running.
Then, the effect to the marine production system 1 of above-mentioned embodiment is illustrated.
The marine production system 1 of present embodiment will be collected in from oil gas field F via production fluid PF that producing well W is extracted
Manifold M is simultaneously carried in flowline FL using pressure energy when exploiting from oil gas field F and is supplied to subsea module SM.
In subsea module SM, the generator (not shown) from ship S is by umbilical line AL to each unit feeding electricity
Power.Production fluid PF for being supplied to subsea module SM is cooled down by main heat exchanger 2 and flows into separator 3.Flow into separator 3
Production fluid PF is separated into the crude oil O as the liquid and natural gas G as gas.
It should be noted that the crude oil O after being separated by separator 3 includes condensate liquid etc..
Circulated in liquid communication portion 42 and be transported to pump 41 by the crude oil O that separator 3 is isolated.Pump 41 is by crude oil O
Compression simultaneously sends into petroleum pipeline OR, and crude oil O is supplied the crude oil (not shown) to ship S via compressed liquid throughput 43
The hold-up tank of O.
Circulated in liquid communication portion 42 and be transported to compressor 50 by the natural gas G that separator 3 is isolated.In compression
In machine 50, natural gas G is compressed and is conveyed to compressed gas circulation portion 52.From hydrate antifreezing agent supply unit 53 to compressed gas
Body throughput 52 supplies hydrate antifreezing agent, and hydrate antifreezing agent sends into appendix GR by together with the natural gas G after compression.
In compressed gas circulation portion 52, freezing by caused by the hydrate antifreezing agent being supplied to prevents hydration materialization, while will
Natural gas G supplies the hold-up tank of the natural gas G (not shown) to ship S.
Then, the cleaning method of the compressor 50 of above-mentioned embodiment is illustrated.
As described above natural gas G is being compressed and in the compressor 50 that supplies to ship S, due to continuous running,
So deposit can be separated out and lodge in compressor 50.The cleaning method of compressor 50 is to containing the compression of deposit like this
Machine 50 enters to be about to the cleaning of deposit removal.With regard to the cleaning method of the compressor 50 of present embodiment, based on Fig. 2 to Fig. 4 come
Illustrate.
In the cleaning method of the compressor 50 of present embodiment, as shown in figure 4, stopping compressor 50, (compressor stops
Only operation S10).After compressor stops operation S10, determine and obtain pressure value in the entrance side and outlet side of compressor 50
As the gas after being separated by the separator 3 i.e. characteristic value of natural gas G, and determine state (the characteristic value acquisition work of compressor 50
Sequence S100).
Specifically, obtain in operation S100 in characteristic value, determined by entrance side characteristic value measurement unit 511 and circulated in gas
The pressure value of the natural gas G circulated in portion 51, and obtain the pressure value of the natural gas G of the entrance side of compressor 50.In addition, in spy
Property value obtain in operation S100, circulate in compressed gas circulation portion 52 natural is determined by outlet side characteristic value measurement unit 521
The pressure value of gas G, and obtain the pressure value of the natural gas G of the outlet side of compressor 50.
Then, in the cleaning method of the compressor 50 of present embodiment, calculate the entrance side of acquired compressor 50
Pressure value and outlet side pressure value difference (Difference Calculation operation S200).Specifically, in Difference Calculation operation S200
In, the information of the pressure value determined by entrance side characteristic value measurement unit 511 is imported into the first input unit 61 of control unit 60.
In addition, in Difference Calculation operation S200, the information of the pressure value determined by outlet side characteristic value measurement unit 521 is imported into
Second input unit 62 of control unit 60.In control unit 60, the letter of the first input unit 61 and the second input unit 62 is imported into
Breath is imported into Difference Calculation portion 63.In Difference Calculation portion 63, deduct from the information of the input of the second input unit 62 defeated from first
Enter the information of the input of portion 61, thus calculate the difference of the pressure value of the pressure value and entrance side of the outlet side of compressor 50.
Then, in the cleaning method of the compressor 50 of present embodiment, judge whether to be hydrated to the supply of compressor 50
Thing antifreezing agent (hydrate antifreezing agent supplies judgment step S300).
Specifically, hydrate antifreezing agent supply judgment step S300 in, from Difference Calculation portion 63 judge whether to
Compressor 50 supplies hydrate antifreezing agent.In Difference Calculation portion 63, it is being judged as from the first input unit 61 and the second input
In the case of the input of portion 62 primary information, it is judged as supplying hydrate antifreezing agent and to the second benchmark judging part to compressor 50
The information of 66 output differences.Conversely, in Difference Calculation portion 63, being judged as not by from the first input unit 61 and the second input
In the case of 62 input information of portion, it is judged as not to the supply hydrate antifreezing agent of compressor 50 and defeated to the first benchmark judging part 64
Go out the information of difference.
In the case where being judged as hydrate antifreezing agent not being supplied to compressor 50, judge whether calculated difference is full
Predetermined first benchmark (the first benchmark judgment step S400) of foot.Specifically, in the first benchmark judgment step S400,
In control unit 60, the difference for being calculated is imported into the first benchmark judging part 64 from Difference Calculation portion 63.First benchmark is sentenced
Whether disconnected portion 64 judges the value of the difference being transfused to less than the first benchmark.First benchmark judging part 64 is being judged as what is calculated
Difference starts instruction unit 65 sending signal to supply less than in the case of the first benchmark.Conversely, the first benchmark judging part 64 is being sentenced
Break in the case of being higher than the first benchmark by the difference for calculating, to 78 sending signal of compressor operation adjustment portion, unreal pressure
The cleaning of contracting machine 50 and start the operating of compressor 50.
In the case where the first benchmark judging part 64 is judged as that difference meets the first benchmark less than the first benchmark, pressure is discharged
Natural gas G inside contracting machine 50 (gas discharges operation S450), hydrate antifreezing agent supplies into compressor 50 (supply starts
Operation S500), to 50 internal storage hydrate antifreezing agent of compressor (storage operation S430).In the compressor 50 of present embodiment
Cleaning method in, storage operation S430, gas discharge operation S450 and supply start operation substantially simultaneously implement.Specifically
For, in the cleaning method of the compressor 50 of present embodiment, stopping natural gas G is set to the supply of compressor 50 can
The state of hydrate antifreezing agent is stored in compressor 50.Then, in the cleaning method of compressor 50, discharge in compressor 50
Natural gas G, hydrate antifreezing agent is supplied into compressor 50.
More specifically, in the cleaning method of the compressor 50 of present embodiment, in control unit 60, from the first benchmark
Judging part 64 discharges 71 sending signal of instruction unit to storage.In the cleaning method of compressor 50, in control unit 60, from storage
Instruction unit 71 is discharged to the first flowing valve instruction unit 72, the second flowing valve instruction unit 73, by-passing valve instruction unit 74 and dump valve
75 sending signal of instruction unit.
First flowing valve instruction unit 72 by discharged 71 input signal of instruction unit from storage and to the first flowing valve 561
Instruction is sent so that first flowing valve 561 is inaccessible.The first flowing valve 561 after receiving to indicate is blocked for, and thus circulates from gas
The circulation of the natural gas G that portion 51 is flowed into compressor 50 stops.In the second flowing valve instruction unit 73, by being discharged from storage
71 input signal of instruction unit, indicates so that the second flowing valve 562 is inaccessible so as to send to the second flowing valve 562.By receiving to refer to
The second flowing valve 562 after showing is blocked for, so as to the circulation of natural gas G flowed into from compressor 50 to compressed gas circulation portion 52
Stop (storage operation S430).
By-passing valve instruction unit 74 by by from storage discharge 71 input signal of instruction unit and to by-passing valve 572 sent instruction with
Open by-passing valve 572.By-passing valve 572 after receiving to indicate is opened, so as to natural gas G is flowed into from gas throughput 51
Bypass pipe 571.The natural gas G for flowing into bypass pipe 571 leads to portion 52 simultaneously from the downstream side inflow flow of the compressed gas of the second flowing valve 562
It is transported to appendix GR.
Dump valve instruction unit 75 by by from storage discharge 71 sending signal of instruction unit and to dump valve 583 sent instruction with
Open dump valve 583.Dump valve 583 after receiving to indicate is opened, so as to residue in the day of the inside of compressor 50
So gas G is from the upstream side inflow discharge pipe 581 of the second flowing valve 562 and is discharged to outside (gas discharges operation S450).
In control unit 60, while instruction unit 71 sending signal being discharged to storage from the first benchmark judging part 64, from
First benchmark judging part 64 starts 65 sending signal of instruction unit to supply.Supply starts instruction unit 65 to supply valve instruction unit 68
The number of delivering letters is to start the supply of hydrate antifreezing agent.In supply valve instruction unit 68, by being started instruction unit 65 from supply
Sending signal, indicates so that supply valve 542 is opened so as to send to supply valve 542.By receiving 542 quilt of supply valve after indicating
It is open, so that a part for the hydrate antifreezing agent circulated in hydrate antifreezing agent supply unit 53 is flowed in supply pipe 541.
The hydrate antifreezing agent flowed in supply pipe 541 is from the downstream inflow gas throughput 51 from the first flowing valve 561 and defeated
Deliver to compressor 50 (supply starts operation S500, compressor hydrate antifreezing agent supply step S530).
Hydrate antifreezing agent from compressor 50 via compressed gas circulation portion 52 the second flowing valve 562 upstream side inflow
Discharge pipe 581.Fluid information determination part 582 detects the fluid of circulation from day because hydrate antifreezing agent flows into discharge pipe 581
So gas G switches to hydrate antifreezing agent, by information conveyance to fluid information input unit 76.Fluid information input unit 76 is based in row
The fluid of the flowing of outlet pipe 581 switches to this information of hydrate antifreezing agent from natural gas G, to send to dump valve instruction unit 75
Signal is so that dump valve 583 is inaccessible.It is blocked for by receiving the dump valve 583 of instruction, is existed so as to block hydrate antifreezing agent
The flowing of discharge pipe 581.Hydrate antifreezing agent from the supply of supply pipe 541 is because in discharge pipe 581, compressed gas circulation portion 52
Flowing is plugged and is gradually stored in compressor 50.
Fluid information input unit 76 sends letter to 75 sending signal of dump valve instruction unit and to pressure change instruction unit 77
Number with driving pressure change section 59.Pressure change portion 59 makes compressor 50 by receiving instruction from pressure change instruction unit 77
The pressure change (pressure change operation S550) of internal hydrate antifreezing agent.
Specifically, in pressure change operation S550, pressure change portion 59 makes the hydrate flowed in supply pipe 541
The pressure of antifreezing agent was risen or fallen within the time of regulation.Pressure change is made like this by one side and pressure lifting one is carried out
While hydrate antifreezing agent is sent into from supply pipe 541 to compressor 50, so that the pressure of the hydrate antifreezing agent inside compressor 50
Power changes.
After the pressure change for making hydrate antifreezing agent, the entrance side and outlet side in compressor 50 is determined simultaneously again
The pressure value of natural gas G is obtained, the state (characteristic value obtains operation S100) of compressor 50 is determined.Acquired in then, calculating
The difference (Difference Calculation operation S200) of the pressure value of the entrance side of compressor 50 and the pressure value of outlet side.Next, it is determined that being
It is no to supply hydrate antifreezing agent to compressor 50 (hydrate antifreezing agent supplies judgment step S300).Now, from first
Input unit 61 and the input primary information of the second input unit 62.Therefore, it is in hydrate antifreezing agent supply judgment step S300, poor
Calculating part 63 is divided to be judged as supplying hydrate antifreezing agent the letter to 66 output difference of the second benchmark judging part to compressor 50
Breath.
In the case where being judged as hydrate antifreezing agent being supplied to compressor 50, judge whether calculated difference is full
Predetermined second benchmark (the second benchmark judgment step S600) of foot.Specifically, in the second benchmark judgment step S600,
In control unit 60, the difference for being calculated is transfused to the second benchmark judging part 66 from Difference Calculation portion 63.Second benchmark judges
Whether portion 66 judges the value of the difference being transfused to less than the second benchmark.Second benchmark judging part 66 is being judged as calculated difference
Divide and supply instruction unit 67 sending signal to heating less than in the case of the second benchmark.Conversely, the second benchmark judging part 66 is judging
By the difference that calculates more than the second benchmark in the case of, to 70 sending signal of cleaning termination instruction portion.
In the case where the second benchmark judging part 66 is judged as that difference meets the second benchmark less than the second benchmark, will heating
Hydrate antifreezing agent afterwards supplies (heating supply step S700) to compressor 50.Specifically, in heating supply step S700
In, in control unit 60, from the second benchmark judging part 66 to heating supply 67 sending signal of instruction unit, from heating supply instruction unit
67 to 55 sending signal of heating part.Heating part 55 by by from heating supply 67 sending signal of instruction unit, so as to in liquid flow
In logical portion 42, the crude oil O of flowing proceeds by heat exchange, and the hydrate antifreezing agent flowed in supply pipe 541 is heated to into
For more than 110 DEG C high temperature.It is heated and becomes in the hydrate antifreezing agent inflow gas throughput 51 of high temperature.Inflow gas stream
The hydrate antifreezing agent of the high temperature in logical portion 51 is supplied to compressor 50.
As the hydrate antifreezing agent of high temperature is supplied to compressor 50, so as to the hydrate antifreezing agent of high temperature also flows into pressure
Second flowing valve of ratio 562 of contracting gas throughput 52 leans on upstream side by the part of upstream side, the ratio dump valve 583 of discharge pipe 581
Part.As the hydrate antifreezing agent of high temperature flows into dump valve 583, so as to fluid information determination part 582 determines the water of circulation
The situation that the temperature of compound antifreezing agent rises, and information is conveyed to fluid information input unit 76.76 base of fluid information input unit
This information is risen in the temperature of the hydrate antifreezing agent flowed in discharge pipe 581, is sent to pressure change instruction unit 77
Signal is with driving pressure change section 59.Pressure change portion 59 makes compressor 50 by receiving instruction from pressure change instruction unit 77
The pressure change (pressure change operation S550) of the hydrate antifreezing agent of internal high temperature.
After the pressure change of hydrate antifreezing agent for making high temperature, with the order same with above-mentioned operation, implement special
Property value obtain operation S100, Difference Calculation operation S200 and hydrate antifreezing agent supply judgment step S300.It is anti-in hydrate
Freeze agent supply judgment step S300 in, Difference Calculation portion 63 be judged as again to compressor 50 supply hydrate antifreezing agent and to
The information of 66 output difference of the second benchmark judging part.In the case where the cleaning of compressor 50 has fully been carried out, the second benchmark is sentenced
Disconnected portion 66 is judged as calculated difference more than the second benchmark, and to 70 sending signal of cleaning termination instruction portion.
The cleaning of compressor 50 is terminated by the compressor operation adjustment portion 78 from after 66 sending signal of the second benchmark judging part
And start the operating (cleaning terminates operation S800) of compressor 50.Specifically, terminate in operation S800, in control unit in cleaning
In 60, from compressor operation adjustment portion 78 to supply valve instruction unit 68, dump valve instruction unit 75, the first flowing valve instruction unit 72 with
And 73 sending signal of the second flowing valve instruction unit.
Supply valve instruction unit 68 is by being sent instruction to supply valve 542 from 78 sending signal of compressor operation adjustment portion
So that supply valve 542 is inaccessible.Supply valve 542 after receiving to indicate is blocked for, so as to hydrate antifreezing agent is to supply pipe 541
Interior supply stops.
Dump valve instruction unit 75 is by being sent instruction to dump valve 583 from 78 sending signal of compressor operation adjustment portion
So that dump valve 583 is opened.Dump valve 583 after receiving to indicate is opened, so as to residue in the water of the inside of compressor 50
Upstream side inflow discharge pipe 581 of the compound antifreezing agent from the second flowing valve 562, and by outside discharge.
First flowing valve instruction unit 72 is by by from 78 sending signal of compressor operation adjustment portion to the first flowing valve 561
Send and indicate so that the first flowing valve 561 is opened.The first flowing valve 561 after receiving to indicate is opened, natural so as to start
Gas G is from gas throughput 51 to the supply of compressor 50.Second flowing valve instruction unit 73 is by by from compressor operation adjustment portion
78 sending signals and to the second flowing valve 562 send indicate so that the second flowing valve 562 is opened.By receiving second after indicating
Flowing valve 562 is opened, from the beginning of the circulation of the natural gas G flowed into compressed gas circulation portion 52 from compressor 50.Its result
It is that natural gas G is delivered to appendix GR by together with the hydrate antifreezing agent for not flowing into discharge pipe 581.
Start and from the hydrate antifreezing agent of supply pipe 541 in the supply of natural gas G from gas throughput 51
In the state of supply stops, hydrate antifreezing agent is discharged from discharge pipe 581.Thus, little by little natural gas G also from discharge pipe 581
Start to discharge.It is natural that fluid information determination part 582 detects that the fluid circulated in discharge pipe 581 is switched to from hydrate antifreezing agent
The situation of gas G, sends information to fluid information input unit 76.Fluid information input unit 76 flows based in discharge pipe 581
Fluid switch to this information of natural gas G from hydrate antifreezing agent, to 75 sending signal of dump valve instruction unit so that dump valve
583 is inaccessible.Dump valve 583 after receiving to indicate is blocked for, so as to the discharge of the natural gas G from discharge pipe 581 stops.
As a result, natural gas G only flows towards appendix GR via compressed gas circulation portion 52.
Fluid information input unit 76 is to 75 sending signal of dump valve instruction unit, and sends to compressor operation adjustment portion 78
Signal is starting the operating of compressor 50.Receive the compressor operation adjustment portion 78 after the signal of fluid information input unit 76
Start compressor 50.Then, compressor operation adjustment portion 78 is based on the pressure being input into from the first input unit 61, the second input unit 62
The information of force value, monitors the operational situation of compressor 50, and the aperture of adjustment by-passing valve 572 is sent to by-passing valve instruction unit 74
Signal.78 one side of compressor operation adjustment portion adjusts the aperture of by-passing valve 572, adjustment pressure via by-passing valve instruction unit 74
The operating condition of contracting machine 50 is until it becomes steady running.
According to compressor assembly as described above 5, in order to suppress the hydration materialization of the natural gas G after being compressed by compressor 50
And a part for the hydrate antifreezing agent supplied from hydrate antifreezing agent supply unit 53 to compressed gas circulation portion 52 is by supply
Valve 542 is opened and supplies to compressor 50.Hydrate antifreezing agent not only prevents freezing for natural gas G and suppresses to be hydrated materialization,
And there is lipophile, hydrophily, therefore, it is possible to remove oil-dirt, aqueous spot.Compression is supplied to therefore, it is possible to utilize
The hydrate antifreezing agent of machine 50 effectively removes the deposit separated out inside compressor 50.By using from the confession of hydrate antifreezing agent
A part for the hydrate antifreezing agent supplied to compressed gas circulation portion 52 to portion 53, can be by the hydrate antifreezing agent of requirement
It is stably supplied to compressor 50.By hydrate compressor 50 inside being directed to via supply pipe 541 by pressure change portion 59
Antifreezing agent enters to exercise pressure and rises or falls and carry out pressure lifting, can stir the hydrate antifreezing agent inside compressor 50.
The inside of compressor 50 is cleaned therefore, it is possible to effectively utilizes hydrate antifreezing agent.Thereby, it is possible to stably and effectively clean pressure
Contracting machine 50.
In the compressor assembly 5 of present embodiment, natural gas G is made to compressor making the first flowing valve 561 inaccessible
In the state of 50 supply stops and makes 562 obturation of the second flowing valve, make dump valve 583 open and by natural gas G from discharge pipe
581 to outside discharge.In addition, it is discharged in natural gas G and in the state of almost not residuing in inside, supplies to compressor 50
Feedwater compound antifreezing agent simultaneously makes pressure change by pressure change portion 59.Therefore, it is possible to suppress to be supplied to inside compressor 50
Hydrate antifreezing agent is diluted by natural gas G.Therefore, it is possible to the hydrate supplied from supply pipe 541 antifreezing agent is efficiently used for
The cleaning of compressor 50, can suppress the quantity delivered of hydrate antifreezing agent.
By make the first flowing valve 561 and the second flowing valve 562 it is inaccessible and make dump valve 583 also in the state of obturation to
Compressor 50 supplies hydrate antifreezing agent, can not discharge the hydrate antifreezing agent inside compressor 50 and store the hydrate and prevent
Freeze agent.By in the state of hydrate antifreezing agent to be stored in the inside of compressor 50 becoming pressure by pressure change portion 59
Change, hydrate antifreezing agent can be efficiently stirred inside compressor 50.Therefore, it is possible to more effectively utilize hydrate antifreezing agent
And clean the inside of compressor 50.By not cleaned with discharging hydrate antifreezing agent from compressor 50, hydration can be reduced
Thing antifreezing agent is compressed the cleaning of machine 50 to the quantity delivered of compressor 50.
Control unit 60 prevents hydrate in the case where predetermined condition is met as the first benchmark judging part 64
Freeze agent to flow into supply pipe 541 from hydrate antifreezing agent supply unit 53 and supplied to compressor 50.That is, by using the first base
Quasi- judging part 64 carries out hydrate antifreezing agent and controls to the supply that compressor 50 is supplied, can be to needing the pressure in the state of cleaning
Contracting machine 50 restrictively supplies hydrate antifreezing agent.Therefore, it is possible to hydrate antifreezing agent is efficiently used for the clear of compressor 50
Wash, can further suppress the quantity delivered of hydrate antifreezing agent.
In control unit 60, the compressor 50 determined by the entrance side characteristic value measurement unit 511 of gas throughput 51
The pressure value of the natural gas G of entrance side is transfused to the first input unit 61.In addition, in control unit 60, by flow of the compressed gas
The pressure value of the natural gas G of the outlet side of the compressor 50 that the outlet side characteristic value measurement unit 521 in logical portion 52 is determined is transfused to
Second input unit 62, as a result, the pressure of the natural gas G of the entrance side and outlet side of compressor 50 can be obtained respectively
Value.By by Difference Calculation portion 63 according to the pressure value of the natural gas G of the entrance side and outlet side of acquired compressor 50
To calculate difference, and compared with the first benchmark by the first benchmark judging part 64 and judged, can easily infer compressor
Whether 50 be the state for needing cleaning.Instruction unit 65 can be started to supply from the first benchmark judging part 64 based on judged result
The number of delivering letters, opens supply valve 542 via supply valve instruction unit 68 and makes supply pipe 541 start the supply of hydrate antifreezing agent,
The cleaning of compressor 50 can be implemented.Therefore, it is possible to judge whether compressor 50 is to need the state cleaned with high accuracy, can
Hydrate antifreezing agent is supplied more restrictively.Thereby, it is possible to further efficiently from supply pipe 541 to the compression for needing cleaning
Machine 50 supplies hydrate antifreezing agent, can further suppress hydrate antifreezing agent to the supply of the compressor 50 for needing cleaning
Amount.
By being provided with the heating part 55 heated to hydrate antifreezing agent in supply pipe 541, can be by the water of high temperature
Compound antifreezing agent is supplied to compressor 50.It is heated by hydrate antifreezing agent and becomes high temperature and can to improve hydrate antifreeze
Solubility of the agent to deposit.Therefore, it is possible to improve the dissolution velocity of the deposit for lodging in compressor 50 and can be effectively
Cleaning compressor 50.
By Difference Calculation portion 63 according to the pressure value of the natural gas G of the entrance side and outlet side of acquired compressor 50
To calculate difference, and compared with the second benchmark for being set to the value bigger than the first benchmark by the second benchmark judging part 66 and entered
Row judges.Thereby, it is possible to easily infer whether that compressor 50 becomes the state for needing cleaning again.Thus, for example can also hold
Easily infer whether the state of the different compressor 50 of the situation for being from judging using the first benchmark (for example whether to need to compression
Machine 50 carries out the state of the cleaning of more strength).By being indicated to heating supply from the second benchmark judging part 66 based on judged result
67 sending signal of portion simultaneously begins to warm up heating part 55, can make in the temperature of the hydrate antifreezing agent of the flowing of supply pipe 541
Rise.As a result, can be heated to the supply of compressor 50 and become the hydrate antifreezing agent of high temperature, more effectively can clean
Compressor 50.Therefore, it is possible to judge whether compressor 50 is to judge the feelings cleaned with using the first benchmark with high accuracy
The different state of condition, can implement the cleaning of strength as needed to compressor 50.Thus, carry out for needs in compressor 50 strong
In the case of the state of the cleaning of power, can expeditiously supply the hydrate antifreezing agent after heating and more efficiently clean compression
Machine 50.
By by the part of hydrocarbon there is lipophile and hydroxyl and ether have hydrophilic monoethylene glycol be used as hydrate
Antifreezing agent, effectively can clean compressor 50 oil-dirt and it is water stain both.
According to marine production system 1 as described above, even if being disposed on the compressor of the position that seabed etc. is difficult to safeguard
50 can also stablize and efficiently be cleaned.Therefore, it is possible to the blocking for suppressing to be caused by deposit, can be steady by compressor 50
Surely natural gas G is delivered on ship S.
According to the cleaning method of compressor as described above 50, (supply in compressor hydrate antifreezing agent supply step S530
Give beginning operation S500) in, supply from hydrate antifreezing agent supply unit 53 to the hydrate antifreezing agent in compressed gas circulation portion 52
A part supplied to compressor 50.That is, do not prepare again and supply hydrate antifreezing agent, but using antifreeze from hydrate
A part for the hydrate antifreezing agent that agent supply unit 53 is supplied to compressed gas circulation portion 52.Thereby, it is possible to by the water of requirement
Compound antifreezing agent is stably supplied to compressor 50.
Discharge in operation S450 in gas, make the first flowing valve 561 inaccessible and stopping confessions of the natural gas G to compressor 50
To and open in the state of making 562 obturation of the second flowing valve dump valve 583 and discharge natural gas G to outside from discharge pipe 581.
Therefore, in pressure change operation S550, can be discharged in natural gas G and in the state of almost not residuing in inside, by pressing
Power change section 59 rises or falls pressure for the hydrate antifreezing agent inside compressor 50 via supply pipe 541 and is pressed
Power is lifted.Compressor is stirred therefore, it is possible to suppress supply to be diluted to the hydrate antifreezing agent inside compressor 50 by natural gas G
Hydrate antifreezing agent inside 50.As a result, compressor 50 efficiently and effectively can be cleaned using hydrate antifreezing agent
Inside.Thereby, it is possible to the cleaning that the hydrate antifreezing agent for coming is efficiently used for compressor 50, energy will be supplied from supply pipe 541
Enough quantity delivereds for suppressing hydrate antifreezing agent are while stably and effectively clean compressor 50.
In storage operation S430, make the first flowing valve 561 and 562 obturation of the second flowing valve and also making dump valve 583
Hydrate antifreezing agent is supplied to compressor 50 in the state of obturation.Prevent thereby, it is possible to not discharge the hydrate inside compressor 50
Freeze agent and store the hydrate antifreezing agent.By in the state of hydrate antifreezing agent to be stored in the inside of compressor 50 by pressing
Power change section 59 makes pressure change, can efficiently stir hydrate antifreezing agent inside compressor 50.Therefore, it is possible to more effective
The inside of compressor 50 is cleaned using hydrate antifreezing agent.It is clear by not carrying out with discharging hydrate antifreezing agent from compressor 50
Wash, hydrate antifreezing agent can be reduced and the cleaning of machine 50 is compressed to the quantity delivered of compressor 50.
By Difference Calculation operation S200 according to by characteristic value obtain the entrance side of compressor 50 that operation S100 gets with
And the pressure value of the natural gas G of outlet side is calculating difference, and judged whether by hydrate antifreezing agent supply judgment step S300
Hydrate antifreezing agent is supplied to compressor 50, is compared with the first benchmark by the first benchmark judgment step S400 afterwards and is carried out
Judge, can easily infer whether compressor 50 becomes the state for needing cleaning.Can be based on judged result by supply
Operation S500 makes supply valve 542 open and then make supply pipe 541 start the supply of hydrate antifreezing agent.As a result, can open
Beginning hydrate antifreezing agent can implement the cleaning of compressor 50 to the supply of compressor 50.Therefore, it is possible to judge pressure with high accuracy
Whether contracting machine 50 is the state for needing cleaning, can more restrictively supply hydrate antifreezing agent.Thereby, it is possible to more efficiently will
The hydrate antifreezing agent come from the supply of supply pipe 541 is supplied to the compressor 50 for needing cleaning, can further suppress hydrate
The quantity delivered of antifreezing agent.
Judging whether to supply hydrate antifreezing agent to compressor 50 from hydrate antifreezing agent supply judgment step S300
Afterwards, the first benchmark judgment step S400 or the second benchmark judgment step S600 are implemented based on judged result.Thereby, it is possible to push away
The cleaning state of disconnected compressor 50.The further efficiently cleaning compression therefore, it is possible to the cleaning state according to compressor 50
Machine 50.
By Difference Calculation operation S200 according to by characteristic value obtain the entrance side of compressor 50 that operation S100 gets with
And the pressure value of the natural gas G of outlet side is calculating difference, and by the second benchmark judgment step S600 be set to than the
Second benchmark of the big value of one benchmark compares and is judged.Need thereby, it is possible to easily infer whether compressor 50 becomes again
State to be cleaned.Thus, for example also can easily infer whether the different compression of the situation for being from judging using the first benchmark
The state (for example whether the state to need the cleaning that more strength is carried out to compressor 50) of machine 50.By based on judged result
Begin to warm up heating part 55 by heating supply step S700, the temperature of the hydrate antifreezing agent in the flowing of supply pipe 541 can be made
Degree rises.As a result, will can supply to compressor 50 and be heated and become the hydrate antifreezing agent of high temperature, can be more effective
Ground is implemented to clean by compressor 50.Therefore, it is possible to high accuracy judge compressor 50 be whether with using the judgement of the first benchmark
The different state of the situation of cleaning, can implement the cleaning of strength as needed to compressor 50.Thus, in compressor 50 being need to
In the case of wanting the state of cleaning of strength, the hydrate antifreezing agent more efficiently cleaning that can be effectively supplying after heating is pressed
Contracting machine 50.
More than, carry out to describe in detail embodiments of the present invention referring to the drawings, but each structure of each embodiment and they
Combination etc. be only one, can carry out without departing from the spirit and scope of the invention the adding, omit of structure, displacement and
Other changes.In addition, the present invention is not limited by embodiment, and only limited by technical scheme.
It should be noted that the characteristic value of gas can not be defined in the pressure value of gas as in the present embodiment, and
If being in the value by as the difference that state is produced before and after compressor compresses.For example, the characteristic value of gas can also
Value obtained from the temperature to gas is measured, can also be the flow to gas and be measured obtained from value, also may be used
Be calculate compressor 50 efficiency value.
When judging whether to meet the first benchmark, the second benchmark, can also adopt as in the present embodiment and be not based on one
Secondary judged result implements supply of hydrate antifreezing agent etc., but repeatedly judges whether to meet the first benchmark, the second benchmark
Such structure.By being set to such structure, the spot degree of compressor 50 can be inferred with higher precision.
Industrial applicibility
According to above-mentioned compressor system, by the water that will be supplied to the compressed gas circulation portion of the gas circulation supplied after compression
A part for compound antifreezing agent supplies to compressor and makes pressure change, can efficiently clean compressor.
Description of reference numerals：
1 marine production system；
S ships；
F oil gas fields；
W producing wells；
PF production fluids；
M manifolds；
FL flowlines；
R standpipes；
GR appendixs；
OR petroleum pipelines；
AR hydrate antifreezing agent pipelines；
AL umbilical lines；
SM subsea modules；
2 main heat exchangers；
3 separators；
4 pumping systems；
41 pumps；
42 liquid communication portions；
43 compressed liquid throughputs；
5 compressor assemblies；
50 compressors；
51 gas throughputs；
511 entrance side characteristic value measurement units；
52 compressed gas circulation portions；
521 outlet side characteristic value measurement units；
53 hydrate antifreezing agent supply units；
54 compressor hydrate antifreezing agent supply units；
541 supply pipes；
542 supply valves；
55 heating parts；
56 reservoirs；
561 first flowing valves；
562 second flowing valves；
57 bypass supply valves；
571 bypass pipes；
572 by-passing valves；
58 gas discharge sections；
581 discharge pipes；
582 fluid information determination parts；
583 dump valves；
59 pressure change portions；
60 control units；
61 first input units；
62 second input units；
63 Difference Calculation portions；
64 first benchmark judging parts；
65 supplies start instruction unit；
66 second benchmark judging parts；
67 heating supply instruction units；
68 supply valve instruction units；
70 cleaning termination instruction portions；
Instruction unit is discharged in 71 storages；
72 first flowing valve instruction units；
73 second flowing valve instruction units；
74 by-passing valve instruction units；
75 dump valve instruction units；
76 fluid information input units；
77 pressure change instruction units；
78 compressor operation adjustment portions；
S10 compressors stop operation；
S100 characteristic values obtain operation；
S200 Difference Calculation operations；
S300 hydrates antifreezing agent supplies judgment step；
S400 the first benchmark judgment steps；
S430 stores operation；
S450 gases discharge operation；
S550 pressure change operations；
S500 supplies start operation；
S530 compressor hydrate antifreezing agent supply step；
S600 the second benchmark judgment steps；
S700 heats supply step.
Claims (12)
1. a kind of compressor assembly, wherein,
The compressor assembly possesses：
Compressor, which is compressed to gas；
Compressed gas circulation portion, which is for being circulated by the gas after the compressor compresses；
Hydrate antifreezing agent supply unit, which is by the hydrate antifreezing agent for suppressing the hydration materialization of the gas to the compression
Gas throughput is supplied；
Compressor hydrate antifreezing agent supply unit, which will be the hydrate supplied by the hydrate antifreezing agent supply unit antifreeze
A part for agent is supplied to the compressor；And
Pressure change portion, which makes the pressure of the hydrate antifreezing agent inside the compressor change.
2. compressor assembly according to claim 1, wherein,
The compressor assembly possesses the gas discharge section for discharging the gas inside the compressor,
The compressor of the compressor hydrate antifreezing agent supply unit to after by the gas discharge section discharge gas,
The hydrate antifreezing agent is supplied to the compressor.
3. compressor assembly according to claim 1 and 2, wherein,
The compressor assembly possesses and for the hydrate antifreezing agent to be stored in the reservoir in the compressor,
The pressure change portion makes the pressure of the hydrate antifreezing agent stored by the reservoir change.
4. compressor assembly according to any one of claim 1 to 3, wherein,
The compressor assembly possesses control unit, and in the case where predetermined condition is met, the control unit enters exercises described
Compressor hydrate antifreezing agent supply unit starts to the compressor supply control for supplying the hydrate antifreezing agent.
5. compressor assembly according to claim 4, wherein,
The control unit has：
First benchmark judging part, the characteristic of its entrance side to the compressor and the gas of the outlet side of the compressor
Whether the difference of value meets predetermined first benchmark is judged；And
Supply start instruction unit, its in the case where the first benchmark judging part is judged as meeting first benchmark, to institute
State compressor hydrate antifreezing agent supply unit and send the instruction for starting to the compressor to supply the hydrate antifreezing agent.
6. compressor assembly according to any one of claim 1 to 5, wherein,
The compressor assembly possesses the heating part heated to the hydrate antifreezing agent,
The compressor hydrate antifreezing agent supply unit is by the hydrate antifreezing agent after being heated from the heating part to described
Compressor is supplied.
7. compressor assembly according to claim 5, wherein,
The compressor assembly possesses the heating part heated to the hydrate antifreezing agent,
The control unit has：
Second benchmark judging part, after starting to supply the hydrate antifreezing agent to the compressor, second benchmark judges
Whether portion meets pre- with the difference of the characteristic value of the gas of the outlet side of the compressor to the entrance side of the compressor
The second benchmark for first determining is judged；And
Heating supply instruction unit, its in the case where the second benchmark judging part is judged as meeting second benchmark, to institute
State compressor hydrate antifreezing agent supply unit to send instruction to supply by described in after the heating of the heating part to the compressor
Hydrate antifreezing agent.
8. a kind of marine production system, wherein,
The marine production system possesses：
Compressor assembly any one of claim 1 to 7；And
Separator, which makes from producing well the production fluid being drawn into be separated into the gas and liquid, and by the gas and liquid
Body is supplied to the compressor.
9. a kind of cleaning method of compressor, cleans to the compressor of compressed gas, wherein,
The cleaning method of the compressor includes：
Gas discharges operation, discharges in operation in the gas, discharges the gas inside the compressor；
Compressor hydrate antifreezing agent supply step, it is in the compressor hydrate antifreezing agent supply step, hydrate is antifreeze
A part for agent discharges the compressor supply after the operation discharge gas to by the gas, and the hydrate is antifreeze
Agent is to the compressed gas circulation portion supply supplied by the gas circulation after the compressor compresses and for suppressing the water of the gas
Compound；And
Pressure change operation, in the pressure change operation, sends out the pressure of the hydrate antifreezing agent in the compressor
Changing.
10. the cleaning method of compressor according to claim 9, wherein,
The cleaning method of the compressor includes the storage operation being stored in the hydrate antifreezing agent in the compressor,
In the pressure change operation, the pressure of the hydrate antifreezing agent by the storage operation storage is made to occur to become
Change.
The cleaning method of 11. compressors according to claim 9 or 10, wherein,
The cleaning method of the compressor includes：
First benchmark judgment step, entrance side and the compressor in the first benchmark judgment step, to the compressor
The difference of characteristic value of the gas of outlet side whether meet predetermined first benchmark and judged；And
Supply starts operation, in the case where being judged as meeting first benchmark by the first benchmark judgment step,
The supply starts in operation, starts to supply the hydrate antifreezing agent to the compressor.
The cleaning method of 12. compressors according to claim 11, wherein,
The cleaning method of the compressor includes：
Second benchmark judgment step, in the second benchmark judgment step, is starting to supply the hydrate to the compressor
After antifreezing agent, to the entrance side and the difference of the characteristic value of the gas of the outlet side of the compressor of the compressor it is
It is no to meet predetermined second benchmark and judged；And
Heating supply step, in the case where being judged as meeting second benchmark by the second benchmark judgment step,
In the heating supply step, by heating after the hydrate antifreezing agent supply to the compressor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014147604A JP2016023452A (en) | 2014-07-18 | 2014-07-18 | Compressor system, submarine production system provided with the same, and cleaning method for compressor |
| JP2014-147604 | 2014-07-18 | ||
| PCT/JP2015/051547 WO2016009659A1 (en) | 2014-07-18 | 2015-01-21 | Compressor system, subsea production system provided therewith, and compressor cleaning method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106536853A true CN106536853A (en) | 2017-03-22 |
Family
ID=55078165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580038303.5A Pending CN106536853A (en) | 2014-07-18 | 2015-01-21 | Compressor system, subsea production system provided therewith, and compressor cleaning method |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170211594A1 (en) |
| EP (1) | EP3156586A4 (en) |
| JP (1) | JP2016023452A (en) |
| CN (1) | CN106536853A (en) |
| WO (1) | WO2016009659A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2558662B (en) * | 2017-01-17 | 2021-11-24 | Equinor Energy As | Gas compressor cleaning |
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|---|---|---|---|---|
| WO2007004886A1 (en) * | 2005-07-05 | 2007-01-11 | Aker Kvaerner Subsea As | Device and method for cleaning a compressor |
| US20090311108A1 (en) * | 2006-03-24 | 2009-12-17 | Gaston Mathijssen | Method for Operation of a Compressor Unit, and Associated Compressor Unit |
| CN102691538A (en) * | 2011-03-24 | 2012-09-26 | 株式会社神户制钢所 | Power generating device and control method thereof |
| CN103362791A (en) * | 2012-03-30 | 2013-10-23 | 阿耐思特岩田株式会社 | Compressed gas supply unit, compressed gas supply apparatus and control method of said unit and said apparatus |
| CN103620292A (en) * | 2011-06-30 | 2014-03-05 | 株式会社神户制钢所 | Hydrogen station |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61108900U (en) * | 1984-12-21 | 1986-07-10 | ||
| NO335450B1 (en) * | 2011-06-30 | 2014-12-15 | Aker Subsea As | Seabed compression device |
| AU2012382614B2 (en) * | 2012-06-11 | 2016-08-11 | Statoil Petroleum As | Subsea compressor cleaning method wherein the cleaning liquid is retrieved from the multiphase process fluid |
-
2014
- 2014-07-18 JP JP2014147604A patent/JP2016023452A/en not_active Withdrawn
-
2015
- 2015-01-21 CN CN201580038303.5A patent/CN106536853A/en active Pending
- 2015-01-21 WO PCT/JP2015/051547 patent/WO2016009659A1/en active Application Filing
- 2015-01-21 US US15/326,939 patent/US20170211594A1/en not_active Abandoned
- 2015-01-21 EP EP15821707.5A patent/EP3156586A4/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007004886A1 (en) * | 2005-07-05 | 2007-01-11 | Aker Kvaerner Subsea As | Device and method for cleaning a compressor |
| US20090311108A1 (en) * | 2006-03-24 | 2009-12-17 | Gaston Mathijssen | Method for Operation of a Compressor Unit, and Associated Compressor Unit |
| CN102691538A (en) * | 2011-03-24 | 2012-09-26 | 株式会社神户制钢所 | Power generating device and control method thereof |
| CN103620292A (en) * | 2011-06-30 | 2014-03-05 | 株式会社神户制钢所 | Hydrogen station |
| CN103362791A (en) * | 2012-03-30 | 2013-10-23 | 阿耐思特岩田株式会社 | Compressed gas supply unit, compressed gas supply apparatus and control method of said unit and said apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016009659A1 (en) | 2016-01-21 |
| EP3156586A4 (en) | 2017-07-12 |
| US20170211594A1 (en) | 2017-07-27 |
| EP3156586A1 (en) | 2017-04-19 |
| JP2016023452A (en) | 2016-02-08 |
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Application publication date: 20170322 |