KR20160141532A - Natural gas incoming system of flng and incoming method of natural gas - Google Patents
Natural gas incoming system of flng and incoming method of natural gas Download PDFInfo
- Publication number
- KR20160141532A KR20160141532A KR1020150077344A KR20150077344A KR20160141532A KR 20160141532 A KR20160141532 A KR 20160141532A KR 1020150077344 A KR1020150077344 A KR 1020150077344A KR 20150077344 A KR20150077344 A KR 20150077344A KR 20160141532 A KR20160141532 A KR 20160141532A
- Authority
- KR
- South Korea
- Prior art keywords
- carbon dioxide
- natural gas
- flng
- gas
- injection
- Prior art date
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 168
- 239000003345 natural gas Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims description 27
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 289
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 144
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 144
- 239000007789 gas Substances 0.000 claims abstract description 80
- 238000002347 injection Methods 0.000 claims abstract description 42
- 239000007924 injection Substances 0.000 claims abstract description 42
- 230000006835 compression Effects 0.000 claims abstract description 29
- 238000007906 compression Methods 0.000 claims abstract description 29
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 239000000446 fuel Substances 0.000 claims description 15
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000003949 liquefied natural gas Substances 0.000 description 10
- 239000002253 acid Substances 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
The present invention relates to a system for introducing natural gas mined from a gas field in FLNG into FLNG, and a method for introducing the system.
Liquefied natural gas (LNG) is an eco-friendly fuel with low emissions of air pollutants during combustion, and its consumption is rapidly increasing worldwide. Generally, the liquefied gas is liquefied at the cryogenic temperature from the production site and then transported to the destination by a transporting line (LNGC, LNG Carrier). Since the volume of the liquefied natural gas liquefied at a cryogenic temperature is much smaller than that in the gaseous state, There is an advantage of facilitating the transfer.
Recently, LNG-FPSO (LNG Floating Production, Storage and Offloading, FLNG), which can produce, store and unload LNG in a floating structure, has been developed and used.
In other words, FLNG is moored in the natural gas area and takes in the natural gas from the gas field by the gas inlet device, preprocesses the imported natural gas, and liquefies it by the liquefaction device to produce liquefied natural gas. As shown in FIG.
In addition, LPG and condensate are produced separately during liquefaction and storage of natural gas.
To draw in the gas, a gas inlet device is installed in the gas reservoir, natural gas mined through a plurality of risers connected from the gas inlet device is introduced into the FLNG, Production process.
However, if natural gas is produced for a long time in the gas field, the pressure at which the natural gas is introduced through the riser in the gas field becomes lower than at the initial stage of production, and the viscosity of the natural gas is also increased so that the amount of natural gas introduced into the FLNG is reduced do.
Therefore, there is a problem that the production amount of liquefied natural gas or the like is reduced.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a natural gas inlet system for FLNG which enables a natural gas extracted from a gas field to be supplied to a FLNG, The purpose of this method is to provide a method of introduction.
The natural gas inlet system of FLNG according to one aspect of the present invention includes a carbon dioxide separator for separating carbon dioxide (CO 2) from natural gas that is introduced into the FLNG and is pretreated, a carbon dioxide compression device for compressing carbon dioxide gas separated from the carbon dioxide separator And a carbon dioxide injection device for injecting the carbon dioxide gas compressed by the carbon dioxide compression device into the sea bed gas layer.
The carbon dioxide storage device may further include a carbon dioxide storage tank for storing the carbon dioxide gas compressed by the carbon dioxide compression device.
The apparatus may further include an injection line extending from the carbon dioxide compression device to the carbon dioxide injection device and an injection pump for supplying carbon dioxide gas to the carbon dioxide injection device through the injection line.
Alternatively, it may further include a natural gas inlet device installed on the sea floor, an inlet line extending from the natural gas inlet device to the FLNG, and a multi-stage compressor for increasing the inlet pressure of the natural gas introduced through the inlet line .
According to another aspect of the present invention, there is provided a natural gas inlet system for a FLNG, comprising: a carbon dioxide collecting device for collecting carbon dioxide (CO2) from exhaust gas generated after fuel combustion at a fuel consumption point of FLNG; And a carbon dioxide injection device for injecting the carbon dioxide gas compressed by the carbon dioxide compression device into the sea bed gas layer.
The carbon dioxide storage device may further include a carbon dioxide storage tank for storing the carbon dioxide gas compressed by the carbon dioxide compression device.
The apparatus may further include an injection line extending from the carbon dioxide compression device to the carbon dioxide injection device and an injection pump for supplying carbon dioxide gas to the carbon dioxide injection device through the injection line.
Alternatively, it may further include a natural gas inlet device installed on the sea floor, an inlet line extending from the natural gas inlet device to the FLNG, and a multi-stage compressor for increasing the inlet pressure of the natural gas introduced through the inlet line .
According to another aspect of the present invention, there is provided a method for introducing natural gas into a FLNG, the method comprising: a carbon dioxide separation step of separating carbon dioxide (CO2) from a natural gas introduced into the FLNG and pretreated; And a carbon dioxide injection step of injecting carbon dioxide gas compressed by the carbon dioxide compression step into the sea bed gas layer.
The method may further include a carbon dioxide storing step of storing the carbon dioxide gas compressed by the carbon dioxide compression step.
Next, a method for introducing natural gas into an FLNG according to another embodiment of the present invention includes a step of collecting carbon dioxide (CO2) from an exhaust gas generated after fuel combustion at a fuel consumption point of FLNG, A carbon dioxide compression step of compressing the captured carbon dioxide gas, and a carbon dioxide injection step of injecting the carbon dioxide gas compressed by the carbon dioxide compression step into the sea bed gas layer.
The method may further include a carbon dioxide storing step of storing the carbon dioxide gas compressed by the carbon dioxide compression step.
According to the FLNG natural gas inlet system and the inlet method of the present invention,
Even if the time elapses from the initial stage of production, the inlet pressure of the natural gas introduced into the FLNG from the gas field can be maintained.
The inlet pressure of the natural gas can be maintained so that the amount of the natural gas introduced into the FLNG is not reduced and the production amount of the natural gas and the condensate can be maintained.
The pressurized gas injected into the seabed gas layer is environmentally friendly by removing the noxious gas to be discharged into the air by using the carbon dioxide (Co2) generated after the fuel combustion at the fuel consumption destination of the FLNG is removed from the natural gas.
1 is a schematic representation of a natural gas inlet system for FLNG according to one aspect of the present invention.
2 is a schematic representation of a natural gas inlet system of FLNG according to another aspect of the present invention.
In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.
The known techniques necessary for explaining the preferred embodiments of the present invention omit or reduce the description as necessary.
1 is a schematic representation of a natural gas inlet system for FLNG according to one aspect of the present invention.
1, a FLNG natural
FLNG is a structure that develops natural gas from a gas field in the sea, liquefies and stores it on board, and unloads the stored liquefied natural gas to a customer or a liquefied natural gas carrier.
To this end, the FLNG is provided with a natural
The
However, unlike the initial stage of production, the inlet pressure of the natural gas introduced through the
To this end, the natural
The on-line
Alternatively, only the carbon dioxide may be selectively separated from the acid gas removing equipment essential for the general pre-treatment process, or the acid gas removing equipment may perform its function.
The carbon dioxide, which is inevitably removed due to the liquefaction process of natural gas, can be separated and compressed to a high pressure by the carbon dioxide compressing
The carbon
The
In addition, since the
The
Next, FIG. 2 illustrates a natural gas inlet system of FLNG according to another embodiment of the present invention.
2, the natural
2, the natural
A fuel consumption source for this purpose may be a consuming power source for generating exhaust gas by burning gas or oil as fuel, which may be a gas turbine for generating electricity, a boiler system, or the like.
As described above, according to the natural gas inflow system and the inflow method of FLNG according to the present invention, the exhausted and harmful carbon dioxide is compressed and then injected into the submarine gas layer, so that carbon dioxide gas, which is the main pollutant source of global warming phenomenon, While maintaining the production volume of natural gas and other condensate in the FLNG.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention.
110: natural gas inlet device
111: incoming line
112: Multistage compressor
120: Carbon dioxide separator
220: CO2 capture device
130: carbon dioxide compression device
140: Carbon dioxide storage tank
150: Carbon dioxide injection device
151: Injection line
152: Injection pump
Claims (12)
A carbon dioxide compression device for compressing the carbon dioxide gas separated by the carbon dioxide separation device; And
And a carbon dioxide injection device for injecting the carbon dioxide gas compressed by the carbon dioxide compression device into the sea bed gas layer.
Natural gas entry system of FLNG.
Further comprising a carbon dioxide storage tank for storing the carbon dioxide gas compressed by the carbon dioxide compression device.
Natural gas entry system of FLNG.
An injection line extending from the carbon dioxide compression device to the carbon dioxide injection device; And
Further comprising an injection pump for supplying carbon dioxide gas to the carbon dioxide injection device through the injection line,
Natural gas entry system of FLNG.
A natural gas inlet device installed on the sea floor;
An inlet line extending from the natural gas inlet device onto the FLNG; And
Further comprising a multi-stage compressor for increasing the inlet pressure of the natural gas drawn through the inlet line,
Natural gas entry system of FLNG.
A carbon dioxide compression device for compressing the carbon dioxide gas captured by the carbon dioxide capture device; And
And a carbon dioxide injection device for injecting the carbon dioxide gas compressed by the carbon dioxide compression device into the sea bed gas layer.
Natural gas entry system of FLNG.
Further comprising a carbon dioxide storage tank for storing the carbon dioxide gas compressed by the carbon dioxide compression device.
Natural gas entry system of FLNG.
An injection line extending from the carbon dioxide compression device to the carbon dioxide injection device; And
Further comprising an injection pump for supplying carbon dioxide gas to the carbon dioxide injection device through the injection line,
Natural gas entry system of FLNG.
A natural gas inlet device installed on the sea floor;
An inlet line extending from the natural gas inlet device onto the FLNG; And
Further comprising a multi-stage compressor for increasing the inlet pressure of the natural gas drawn through the inlet line,
Natural gas entry system of FLNG.
A carbon dioxide compression step of compressing the carbon dioxide gas separated in the carbon dioxide separation step; And
And a carbon dioxide injection step of injecting carbon dioxide gas compressed by the carbon dioxide compression step into the sea bed gas layer,
Natural gas inflow method of FLNG.
And a carbon dioxide storing step of storing the carbon dioxide gas compressed by the carbon dioxide compression step.
Natural gas inflow method of FLNG.
A carbon dioxide compression step of compressing the carbon dioxide gas captured in the carbon dioxide capture step; And
And a carbon dioxide injection step of injecting carbon dioxide gas compressed by the carbon dioxide compression step into the sea bed gas layer,
Natural gas inflow method of FLNG.
And a carbon dioxide storing step of storing the carbon dioxide gas compressed by the carbon dioxide compression step.
Natural gas inflow method of FLNG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150077344A KR20160141532A (en) | 2015-06-01 | 2015-06-01 | Natural gas incoming system of flng and incoming method of natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150077344A KR20160141532A (en) | 2015-06-01 | 2015-06-01 | Natural gas incoming system of flng and incoming method of natural gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20160141532A true KR20160141532A (en) | 2016-12-09 |
Family
ID=57574559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150077344A KR20160141532A (en) | 2015-06-01 | 2015-06-01 | Natural gas incoming system of flng and incoming method of natural gas |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20160141532A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022260122A1 (en) * | 2021-06-10 | 2022-12-15 | ジャパンマリンユナイテッド株式会社 | Liquefied carbon dioxide press-fitting system and liquefied carbon dioxide press-fitting method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110072810A (en) | 2009-12-23 | 2011-06-29 | 대우조선해양 주식회사 | Ccs process with vessel transporting |
-
2015
- 2015-06-01 KR KR1020150077344A patent/KR20160141532A/en not_active Application Discontinuation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110072810A (en) | 2009-12-23 | 2011-06-29 | 대우조선해양 주식회사 | Ccs process with vessel transporting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022260122A1 (en) * | 2021-06-10 | 2022-12-15 | ジャパンマリンユナイテッド株式会社 | Liquefied carbon dioxide press-fitting system and liquefied carbon dioxide press-fitting method |
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