CN110513598A - A kind of closed pressurization gathering system of oil well site associated gas and its application method - Google Patents
A kind of closed pressurization gathering system of oil well site associated gas and its application method Download PDFInfo
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- CN110513598A CN110513598A CN201910720984.3A CN201910720984A CN110513598A CN 110513598 A CN110513598 A CN 110513598A CN 201910720984 A CN201910720984 A CN 201910720984A CN 110513598 A CN110513598 A CN 110513598A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/14—Arrangements for supervising or controlling working operations for eliminating water
- F17D3/145—Arrangements for supervising or controlling working operations for eliminating water in gas pipelines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of closed pressurization gathering system of oil well site associated gas and its application methods, enter well group header by gas mixture, liquid component in filtering for the first time and gas-liquid separation associated gas is carried out subsequently into surge tank and gas-liquid separator, the associated gas in gas-liquid separator after separation enters closed pressurization gathering and transporting device, external transport pipeline is inputted through closed pressurization gathering and transporting device treated associated gas, wherein gas-liquid separator and the closed interior liquid separated of pressurization gathering and transporting device pass through pipeline and enter in external transport pipeline, associated gas whole closed gathering in the recovery technology of associated gas ground is realized using the closed pressurization gathering system of the associated gas, the present invention is during associated gas closed pressurized treatment simultaneously, since front end be filtered for multiple times to associated gas and gas-liquid separation, diaphragm type compressor is avoided in compressed gas The problem of rupture of diaphragm and valve seat fail in the process, so that closed gathering system reliability is higher.
Description
Technical field
The present invention relates to associated gas recovery technology fields, and in particular to a kind of closed pressurization collection of oil well site associated gas
Defeated system and its application method.
Background technique
Currently, oil field at home associated gas ground recovery technology mainly uses well head constant pressure valve gas collection to mix defeated, booster station oil gas
Mix defeated, gathering station lighter hydrocarbons recovery etc..But it is ineffective to cause oil-gas mixed delivery pump to take gas since booster station oil and gas content is unstable, companion
Anger can not achieve whole closed gatherings, therefore mixing defeated after being pressurized using diaphragm type compressor to associated gas is associated gas ground
Collect a defeated new technology.
Diaphragm type compressor is usually only suitable for compression clean gas, have the characteristics that compression ratio height, it is closed do not reveal, and association
Gas contains a small amount of impurity, contains liquid in normal temperature state, and lime set can be also generated in compression process, once liquid accumulation exists
In air cavity, rupture of diaphragm, valve seat failure will lead to, in the serious curtailment diaphragm service life, diaphragm is largely assembled or even can also be made to liquid
Compressor casing is cracked because building the pressure, and compressor is caused to can not operate normally.For this purpose, researching and developing a kind of oil well site associated gas
Can closed pressurization gathering system and its application method remove impurity and liquid component, be applied to associated gas to the technology
It is most important in the recycling of ground.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, a kind of impurity except in associated gas, liquid are provided, realizes closed increasing
The closed pressurization gathering system of purpose oil well site associated gas of pressure conveying associated gas, especially a kind of oil well site associated gas are closed
It is pressurized gathering system and its application method.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of closed pressurization gathering system of oil well site associated gas, including
Well group header, well group header arrival end are connected to oil well site gathering line；
Surge tank, surge tank arrival end are connected to by pipeline with the outlet end of well group header；
Gas-liquid separator, gas-liquid separator include arrival end, gas outlet and liquid outlet, and the arrival end of gas-liquid separator passes through
Pipeline is connected to surge tank outlet end；
One end of closed pressurization gathering and transporting device, closed pressurization gathering and transporting device is connected by the gas outlet of pipeline and gas-liquid separator
It is logical；
External transport pipeline, external transport pipeline one end pass through the liquid outlet of pipeline and gas-liquid separator and closed pressurization gathering and transporting device
Other end connection, the external transport pipeline other end carry out outlet；
Control module, control module are connect by cable with closed pressurization gathering and transporting device.
The closed pressurization gathering and transporting device includes tertiary filter, produces into heat exchanger, inlet end surge tank, membrane compresses
Machine, air cooler and exhaust surge tank, described tertiary filter one end are connected to by pipeline with the gas outlet of gas-liquid separator, three-level
The filter other end is successively connected company with producing into heat exchanger, inlet end surge tank, diaphragm type compressor, air cooler and exhaust surge tank
Logical, exhaust surge tank also passes through pipeline and is connected to external transport pipeline.
Tertiary filter, inlet end surge tank, diaphragm type compressor and the exhaust end surge tank be provided with arrival end,
Gas outlet and liquid outlet produce into heat exchanger and air cooler and are provided with air inlet and air outlet, the arrival end of the tertiary filter
It is connected to by pipeline with the gas outlet of gas-liquid separator, the gas outlet of tertiary filter by pipeline and produces the air inlet into heat exchanger
The liquid outlet of mouth connection, tertiary filter is connected to by pipeline with external transport pipeline, and described produce into the gas outlet of heat exchanger passes through pipe
Line is connected to the arrival end of inlet end surge tank, and the gas outlet of inlet end surge tank passes through the arrival end of pipeline and diaphragm type compressor
Connection, the liquid outlet of inlet end surge tank be connected tos by pipeline with external transport pipeline, the gas outlet of diaphragm type compressor pass through pipeline and
The air inlet of air cooler is connected to, and the liquid outlet of diaphragm type compressor is connected to by pipeline with external transport pipeline, and the gas outlet of air cooler is logical
It crosses pipeline to be connected to the arrival end of exhaust end surge tank, the gas outlet of exhaust end surge tank and liquid outlet connect with external transport pipeline
It is logical.
The row of the gas-liquid separator, tertiary filter, inlet end surge tank, diaphragm type compressor and exhaust end surge tank
Liquid mouth is by being also connected with check-valves on pipeline and the pipeline of external transport pipeline connectivity part.
The tertiary filter is produced into heat exchanger, inlet end surge tank, diaphragm type compressor, air cooler and exhaust buffering
Tank passes through cable and connect with control module.
The control module uses PLC control module.
Gas-liquid biphase flowmeter is provided on the external transport pipeline.
A kind of closed application method for being pressurized gathering system of oil well site associated gas includes one described in above-mentioned any one
The kind closed pressurization gathering system of oil well site associated gas, comprising the following steps:
Step 1: gas mixture is introduced into well group header, carries out for the first time subsequently into surge tank and gas-liquid separator
Liquid component in filtering and gas-liquid separation associated gas, the gas that gas-liquid separator separates go out are entered from gas outlet by pipeline closed
It is pressurized gathering and transporting device, the liquid that gas-liquid separator separates go out enters external transport pipeline by pipeline from liquid outlet；
Step 2: in step 1, the gas that gas-liquid separator separates go out enters closed pressurization by pipeline from gas outlet
Tertiary filter in gathering and transporting device is filtered, the impurity in strainer removal associated gas in tertiary filter, then three-level
The liquid that filter filters out enters external transport pipeline by pipeline, and the gas in tertiary filter is entered from gas outlet by pipeline
It produces to exchange heat into heat exchanger and vaporizes part cryogenic liquid component, the gas after then vaporizing is from the gas outlet produced into heat exchanger
Liquid component in second of filtering associated gas is carried out into inlet end surge tank, the liquid of inlet end surge tank filtering passes through pipeline
Into external transport pipeline, the gas in inlet end surge tank enters diaphragm type compressor and is pressurized, the liquid generated in diaphragm type compressor
Body enters external transport pipeline by pipeline, and pressurized gas enters air cooler by pipeline and cools down in diaphragm type compressor, drop
Gas after temperature enters exhaust end surge tank by pipeline, and the gas and liquid in exhaust end surge tank are entered by pipeline outer
Defeated pipeline.
It is described in step 2, tertiary filter is produced into heat exchanger, inlet end surge tank, diaphragm type compressor, air cooler
Pass through control module with the temperature and pressure being vented in surge tank and controlled, the output flow of external transport pipeline passes through outer defeated pipe
The gas-liquid biphase flowmeter connected on line is monitored.
The beneficial effects of the present invention are:
Compared with prior art, the present invention passes through:
1, gas mixture enters well group header, and it is gentle filter for the first time subsequently into surge tank and gas-liquid separator
Liquid separates liquid component in associated gas, and the associated gas in gas-liquid separator after separation enters closed pressurization gathering and transporting device,
External transport pipeline is inputted through closed pressurization gathering and transporting device treated associated gas, wherein gas-liquid separator and closed pressurization gathering and transporting device
Interior isolated liquid passes through pipeline and enters in external transport pipeline, realizes oil field association using the closed pressurization gathering system of the associated gas
Associated gas whole closed gathering in the recovery technology of gas ground, while the present invention is during associated gas closed pressurized treatment, due to
Associated gas be filtered for multiple times by surge tank 2 and gas-liquid separator 3 and closed pressurization gathering and transporting device 4 and gas-liquid
Separation, the problem of avoiding diaphragm type compressor rupture of diaphragm and valve seat fail during compressed gas, so that closed gathering
System reliability is higher.
2, it is for re-filtering by pipeline to enter tertiary filter for the gas that gas-liquid separator separates go out, then gas into
Enter to produce to exchange heat into heat exchanger and vaporize part cryogenic liquid component, then produces into the gas in heat exchanger and enter back into inlet end
Liquid component in surge tank secondary filter associated gas, the gas in inlet end surge tank enter diaphragm type compressor and are pressurized, and increase
After gas after pressure is cooled down by air cooler, it is slow that the gas in air cooler after cooling enters progress pressure in exhaust end surge tank
Punching, while carrying out except liquid, then the gas in exhaust end surge tank and liquid, which pass through pipeline and enters external transport pipeline, carries out outlet,
Associated gas can be carried out to multiple filtering using the structure, wherein entire pipeline compression ratio can be made using diaphragm type compressor
Greatly, wherein the admission pressure of diaphragm type compressor is not less than 0.1MPa, pressure at expulsion is not more than 3.0MPa, and diaphragm type compressor is closed
It does not reveal, the liquid generated in tertiary filter, inlet end surge tank and diaphragm type compressor passes through pipeline and enters external transport pipeline
Outlet is carried out, by tertiary filter, the setting into heat exchanger, inlet end surge tank is produced, is purified associated gas, avoids
Diaphragm type compressor the problem of rupture of diaphragm and valve seat fail during compressed gas, extend the diaphragm service life.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is associated gas recovery process schematic diagram of the invention.
In figure: the closed pressurization gathering and transporting device of 1- well group header, 2- surge tank, 3- gas-liquid separator, 4-, 5- external transport pipeline,
6- control module, 7- tertiary filter, 8- produce into heat exchanger, 9- inlet end surge tank, 10- diaphragm type compressor, 11- air cooler,
12- exhaust end surge tank.
Specific embodiment
Embodiment 1:
Referring to Fig.1, the closed pressurization gathering system of a kind of oil well site associated gas, including
Well group header 1,1 arrival end of well group header are connected to oil well site gathering line；
Surge tank 2,2 arrival end of surge tank are connected to by pipeline with the outlet end of well group header 1；
Gas-liquid separator 3, gas-liquid separator 3 include arrival end, gas outlet and liquid outlet, the arrival end of gas-liquid separator 3
It is connected to by pipeline with 2 outlet end of surge tank；
One end of closed pressurization gathering and transporting device 4, closed pressurization gathering and transporting device 4 passes through the outlet of pipeline and gas-liquid separator 3
Mouth connection；
External transport pipeline 5,5 one end of external transport pipeline collect defeated dress by the liquid outlet and closed pressurization of pipeline and gas-liquid separator 3
4 other end connection is set, 5 other end of external transport pipeline carries out outlet；
Control module 6, control module 6 are connect by cable with closed pressurization gathering and transporting device 4.
In actual use: gas mixture enters well group header 1, carries out the subsequently into surge tank 2 and gas-liquid separator 3
Liquid component in primary filtering and gas-liquid separation associated gas, the associated gas in gas-liquid separator 3 after separation enter closed
It is pressurized gathering and transporting device 4, through closed pressurization gathering and transporting device 4 treated associated gas input external transport pipeline 5, wherein gas-liquid separator 3
And the liquid separated in closed pressurization gathering and transporting device 4 passes through pipeline and enters in external transport pipeline 5, uses the closed pressurization of the associated gas
Gathering system realizes associated gas whole closed gathering in the recovery technology of associated gas ground, while the present invention is closed in associated gas
During pressurized treatment, due to passing through surge tank 2 and gas-liquid separator 3 and closed pressurization gathering and transporting device 4 to associated gas
Be filtered for multiple times and gas-liquid separation, has avoided diaphragm type compressor rupture of diaphragm and valve seat failure during compressed gas
The problem of, so that closed gathering system reliability is higher.
Embodiment 2:
Compared with Example 1, the present embodiment the difference is that: the closed pressurization gathering and transporting device 4 include three-level
Filter 7 produces into heat exchanger 8, inlet end surge tank 9, diaphragm type compressor 10, air cooler 11 and is vented surge tank 12, and described three
Grade 7 one end of filter is connected to by pipeline with the gas outlet of gas-liquid separator 3,7 other end of tertiary filter successively with produce into changing
Hot device 8, inlet end surge tank 9, diaphragm type compressor 10, air cooler 11 and exhaust 12 serial communication of surge tank, are vented surge tank 12
Also it is connected to by pipeline with external transport pipeline 5.
In actual use: the gas that gas-liquid separator 3 is isolated enters tertiary filter 7 by pipeline and carries out mistake again
Filter, then gas enters to produce to exchange heat into heat exchanger 8 and vaporizes part cryogenic liquid component, then produces into heat exchanger 8
Gas enters back into liquid component in 9 secondary filter associated gas of inlet end surge tank, and the gas in inlet end surge tank 9 enters diaphragm
Compressor 10 is pressurized, and after pressurized gas is cooled down by air cooler 11, the gas in air cooler 11 after cooling enters row
Pressure buffer is carried out in gas end surge tank 12, while being carried out except liquid, and then the gas in exhaust end surge tank 12 and liquid are logical
It crosses pipeline and enters the progress outlet of external transport pipeline 5, associated gas can be carried out to multiple filtering using the structure, wherein using diaphragm
Compressor 10 can make entire pipeline compression ratio big, and wherein the admission pressure of diaphragm type compressor is not less than 0.1MPa, pressure at expulsion
No more than 3.0MPa, and diaphragm type compressor is closed does not reveal, in tertiary filter 7, inlet end surge tank 9 and diaphragm type compressor 10
The liquid of generation passes through pipeline and enters the progress outlet of external transport pipeline 5, by tertiary filter 7, produces into heat exchanger 8, inlet end
The setting of surge tank 9, is purified associated gas, avoids diaphragm type compressor rupture of diaphragm and valve during compressed gas
The problem of seat failure, extend the diaphragm service life.
Embodiment 3:
Compared with Example 2, the present embodiment the difference is that: the tertiary filter 7, inlet end surge tank 9,
Diaphragm type compressor 10 and exhaust end surge tank 12 are provided with arrival end, gas outlet and liquid outlet, produce into heat exchanger 8 and air cooler
11 are provided with air inlet and air outlet, and the arrival end of the tertiary filter 7 is connected by the gas outlet of pipeline and gas-liquid separator 3
Logical, the gas outlet of tertiary filter 7 is connected to by pipeline with the air inlet produced into heat exchanger 8, and the liquid outlet of tertiary filter 7 is logical
Pipeline is crossed to be connected to external transport pipeline 5, it is described to produce the arrival end for passing through pipeline and inlet end surge tank 9 into the gas outlet of heat exchanger 8
The gas outlet of connection, inlet end surge tank 9 is connected to by pipeline with the arrival end of diaphragm type compressor 10, inlet end surge tank 9
Liquid outlet is connected to by pipeline with external transport pipeline 5, and the gas outlet of diaphragm type compressor 10 passes through the air inlet of pipeline and air cooler 11
The liquid outlet of connection, diaphragm type compressor 10 is connected to by pipeline with external transport pipeline 5, and the gas outlet of air cooler 11 passes through pipeline and row
The arrival end of gas end surge tank 12 is connected to, and the gas outlet of exhaust end surge tank 12 and liquid outlet are connected to external transport pipeline 5.
In actual use: the gas that gas-liquid separator 3 is isolated enters three from the arrival end of tertiary filter 7 by pipeline
In grade filter 7, then for gas after filtering, the liquid in tertiary filter 7 passes through pipe from the liquid outlet of tertiary filter 7
Line enters in external transport pipeline 5, and the gas in tertiary filter 7 is from the gas outlet of tertiary filter 7 by pipeline from producing into heat exchange
The air inlet of device 8, which enters, to be produced into heat exchanger 8, and gas is being produced into exchanging heat part cryogenic liquid component vapour in heat exchanger 8
Change, then produces into the gas in heat exchanger 8 from producing into the gas outlet of heat exchanger 8 through entrance of the pipeline from inlet end surge tank 9
End enters inlet end surge tank 9 and is buffered, liquid outlet of the liquid generated in inlet end surge tank 9 from inlet end surge tank 9
Entered in external transport pipeline 5 by pipeline, the gas in inlet end surge tank 9 passes through pipe from the gas outlet on inlet end surge tank 9
Line enters in diaphragm type compressor 10 from the arrival end of diaphragm type compressor 10, and gas is pressurized by diaphragm type compressor 10, after pressurization
Gas entered in air cooler 11 by pipeline from the air inlet of air cooler 11 from the gas outlet of diaphragm type compressor 10, air cooler 11
Gas is cooled down, the liquid generated in diaphragm type compressor 10 is entered from the liquid outlet on diaphragm type compressor 10 by pipeline outer
In defeated pipeline 5, pipeline is passed through from exhaust end surge tank 12 from the gas outlet of air cooler 11 by the gas of cooling in air cooler 11
Arrival end enter in exhaust end surge tank 12, exhaust end surge tank 12 buffers gas, while carrying out except liquid, by slow
The liquid generated in gas and exhaust end surge tank 12 after punching is logical from the exhaust outlet and leakage fluid dram of exhaust end surge tank 12
It crosses pipeline and enters the progress outlet of external transport pipeline 5.
Embodiment 4:
Compared with embodiment 1 or embodiment 3, the present embodiment the difference is that: the gas-liquid separator 3, three-level
Filter 7, inlet end surge tank 9, diaphragm type compressor 10 and exhaust end surge tank 12 leakage fluid dram pass through pipeline and external transport pipeline 5
Check-valves is also connected on the pipeline of connectivity part.
In actual use: in gas-liquid separator 3, tertiary filter 7, inlet end surge tank 9, diaphragm type compressor 10 and exhaust
It holds the leakage fluid dram of surge tank 12 by setting connection check-valves on pipeline and the pipeline of 5 connectivity part of external transport pipeline, uses check-valves
It prevents liquid reflux to closed pressurization gathering and transporting device (4), i.e., gas-liquid separator 3, tertiary filter 7, air inlet is flowed back to by pipeline
It holds in surge tank 9, diaphragm type compressor 10 or exhaust end surge tank 12.
Embodiment 5:
Compared with Example 2, the present embodiment the difference is that: the tertiary filter 7, produce into heat exchanger 8, into
Gas end surge tank 9, diaphragm type compressor 10, air cooler 11 and exhaust surge tank 12 are connect by cable with control module 6.
Preferably the control module 6 uses PLC control module.
In actual use: the use PLC control module of control module 6, the closed tertiary filter 7 being pressurized in gathering and transporting device 4,
It produces equal into heat exchanger 8, inlet end surge tank 9, diaphragm type compressor 10, air cooler 11 and the temperature being vented in surge tank 12 and pressure
It is controlled by PLC control module, the PLC control module in the present invention is using the prior art, as long as in the prior art
May be implemented to the present invention it is closed pressurization gathering and transporting device 4 in tertiary filter 7, produce into heat exchanger 8, inlet end surge tank 9, every
The PLC control module that film compressor 10, air cooler 11 and the temperature and pressure being vented in surge tank 12 are controlled is applicable
In the present invention.
Embodiment 6:
Compared with Example 1, the present embodiment the difference is that: be provided with gas-liquid two-phase on the external transport pipeline 5
Flowmeter.
In actual use: external transport pipeline 5 is supervised when carrying out outlet by the gas-liquid biphase flowmeter on external transport pipeline 5
Control is easy for measuring and monitoring the tolerance and liquid measure of external transport pipeline 5 using the benefit of gas-liquid biphase flowmeter.
Embodiment 7:
A kind of closed application method for being pressurized gathering system of oil well site associated gas includes described in embodiment 1-5 any one
A kind of closed pressurization gathering system of oil well site associated gas, comprising the following steps:
Step 1: gas mixture is introduced into well group header 1, carries out first subsequently into surge tank 2 and gas-liquid separator 3
Liquid component in secondary filtering and gas-liquid separation associated gas, the gas that gas-liquid separator 3 is isolated are entered from gas outlet by pipeline
Closed pressurization gathering and transporting device 4, the liquid that gas-liquid separator 3 is isolated enter external transport pipeline 5 by pipeline from liquid outlet；
Step 2: in step 1, the gas that gas-liquid separator 3 is isolated enters closed pressurization by pipeline from gas outlet
Tertiary filter 7 in gathering and transporting device 4 is filtered, the impurity in strainer in tertiary filter 7 removal associated gas, and then three
The liquid that grade filter 7 filters out enters external transport pipeline 5 by pipeline, and the gas in tertiary filter 7 passes through pipe from gas outlet
Line, which enters to produce to exchange heat into heat exchanger 8, vaporizes part cryogenic liquid component, and the gas after then vaporizing is from producing into heat exchanger 8
Gas outlet enter inlet end surge tank 9 and carry out liquid component in second filtering associated gas, the liquid that inlet end surge tank 9 filters
Body enters external transport pipeline 5 by pipeline, and the gas in inlet end surge tank 9 enters diaphragm type compressor 10 and is pressurized, diaphragm pressure
The liquid generated in contracting machine 10 enters external transport pipeline 5 by pipeline, in diaphragm type compressor 10 pressurized gas pass through pipeline into
Enter air cooler 11 to cool down, the gas after cooling enters exhaust end surge tank 12 by pipeline, in exhaust end surge tank 12
Gas and liquid pass through pipeline and enter external transport pipeline 5.
Through the above steps method associated gas by tertiary filter 7, produce into heat exchanger 8, inlet end surge tank 9 and set
Set, be purified associated gas, avoid diaphragm type compressor during compressed gas rupture of diaphragm and valve seat failure ask
Topic, extends the diaphragm service life, while making entire closed gathering system reliability higher.
Embodiment 8:
Compared with Example 7, the present embodiment the difference is that: it is described in step 2, tertiary filter 7, produce
It is logical into heat exchanger 8, inlet end surge tank 9, diaphragm type compressor 10, air cooler 11 and the temperature being vented in surge tank 12 and pressure
Control module 6 is crossed to be controlled, the output flow of external transport pipeline 5 by the gas-liquid biphase flowmeter that is connected on external transport pipeline 5 into
Row monitoring.
In actual use: tertiary filter 7 is produced into heat exchanger 8, inlet end surge tank 9, diaphragm type compressor 10, air cooler
11 and exhaust surge tank 12 in temperature and pressure pass through control module 6 and controlled, control module 6 is using existing skill
As long as art PLC control module is able to achieve tertiary filter 7, produces into heat exchanger 8, inlet end surge tank 9, diaphragm type compressor 10, wind
Cooler 11 and exhaust surge tank 12 in temperature and pressure monitoring control module suitable for the invention patent technical solution,
The output flow of external transport pipeline 5 is monitored by the gas-liquid biphase flowmeter connected on external transport pipeline 5, convenient for metering and monitoring
The tolerance and liquid measure of external transport pipeline 5.
Embodiments of the present invention are described in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention
Various changes can be made, all in the protection scope of the technology.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
Technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
Claims (9)
1. a kind of closed pressurization gathering system of oil well site associated gas, it is characterized in that: including
Well group header (1), well group header (1) arrival end are connected to oil well site gathering line；
Surge tank (2), surge tank (2) arrival end are connected to by pipeline with the outlet end of well group header (1)；
Gas-liquid separator (3), gas-liquid separator (3) include arrival end, gas outlet and liquid outlet, the entrance of gas-liquid separator (3)
End is connected to by pipeline with surge tank (2) outlet end；
Closed pressurization gathering and transporting device (4), one end going out by pipeline and gas-liquid separator (3) of closed pressurization gathering and transporting device (4)
Port connection；
External transport pipeline (5), external transport pipeline (5) one end collect defeated by pipeline and the liquid outlet of gas-liquid separator (3) and closed pressurization
The other end of device (4) is connected to, and external transport pipeline (5) other end carries out outlet；
Control module (6), control module (6) are connect by cable with closed pressurization gathering and transporting device (4).
2. the closed pressurization gathering system of a kind of oil well site associated gas according to claim 1, it is characterized in that: described is close
Pressurization gathering and transporting device (4) is closed to include tertiary filter (7), produce into heat exchanger (8), inlet end surge tank (9), diaphragm type compressor
(10), air cooler (11) and exhaust surge tank (12), described tertiary filter (7) one end pass through pipeline and gas-liquid separator (3)
Gas outlet connection, tertiary filter (7) other end successively with produce into heat exchanger (8), inlet end surge tank (9), membrane compresses
Machine (10), air cooler (11) and exhaust surge tank (12) serial communication, exhaust surge tank (12) also pass through pipeline and external transport pipeline
(5) it is connected to.
3. the closed pressurization gathering system of a kind of oil well site associated gas according to claim 2, it is characterized in that: described three
Grade filter (7), inlet end surge tank (9), diaphragm type compressor (10) and exhaust end surge tank (12) are provided with arrival end, go out
Port and liquid outlet produce into heat exchanger (8) and air cooler (11) and are provided with air inlet and air outlet, the tertiary filter (7)
Arrival end be connected to the gas outlet of gas-liquid separator (3) by pipeline, the gas outlet of tertiary filter (7) passes through pipeline and production
Air inlet into heat exchanger (8) is connected to, and the liquid outlet of tertiary filter (7) is connected to by pipeline with external transport pipeline (5), the production
It is connected into the gas outlet of heat exchanger (8) by pipeline with the arrival end of inlet end surge tank (9), inlet end surge tank (9) goes out
Port is connected to by pipeline with the arrival end of diaphragm type compressor (10), and the liquid outlet of inlet end surge tank (9) is by pipeline and outside
Defeated pipeline (5) connection, the gas outlet of diaphragm type compressor (10) are connected to by pipeline with the air inlet of air cooler (11), membrane compresses
The liquid outlet of machine (10) is connected to by pipeline with external transport pipeline (5), and the gas outlet of air cooler (11) is slow by pipeline and exhaust end
The arrival end connection of tank (12) is rushed, the gas outlet of exhaust end surge tank (12) and liquid outlet are connected to external transport pipeline (5).
4. the closed pressurization gathering system of a kind of oil well site associated gas according to claim 1 or 3, it is characterized in that: described
Gas-liquid separator (3), tertiary filter (7), inlet end surge tank (9), diaphragm type compressor (10) and exhaust end surge tank
(12) leakage fluid dram is by being also connected with check-valves on pipeline and the pipeline of external transport pipeline (5) connectivity part.
5. the closed pressurization gathering system of a kind of oil well site associated gas according to claim 2, it is characterized in that: described three
Grade filter (7) is produced into heat exchanger (8), inlet end surge tank (9), diaphragm type compressor (10), air cooler (11) and exhaust buffering
Tank (12) is connect by cable with control module (6).
6. the closed pressurization gathering system of a kind of oil well site associated gas according to claim 5, it is characterized in that: the control
Molding block (6) uses PLC control module.
7. the closed pressurization gathering system of a kind of oil well site associated gas according to claim 1, it is characterized in that: described is outer
Gas-liquid biphase flowmeter is provided on defeated pipeline (5).
8. a kind of application method of the closed pressurization gathering system of oil well site associated gas includes described in claim 1-6 any one
A kind of closed pressurization gathering system of oil well site associated gas, it is characterized in that: the following steps are included:
Step 1: gas mixture is introduced into well group header (1), carries out the subsequently into surge tank (2) and gas-liquid separator (3)
Liquid component in primary filtering and gas-liquid separation associated gas, the gas that gas-liquid separator (3) is isolated pass through pipeline from gas outlet
Into closed pressurization gathering and transporting device (4), the liquid that gas-liquid separator (3) is isolated enters external transport pipeline by pipeline from liquid outlet
(5)；
Step 2: in step 1, the gas that gas-liquid separator (3) is isolated is collected by pipeline into closed pressurization from gas outlet
Tertiary filter (7) in defeated device (4) is filtered, the impurity in strainer removal associated gas in tertiary filter (7), so
The liquid that tertiary filter (7) filters out afterwards is entered external transport pipeline (5) by pipeline, and the gas in tertiary filter (7) is from out
Port, which enters to produce to exchange heat into heat exchanger (8) by pipeline, vaporizes part cryogenic liquid component, the gas after then vaporizing
Enter liquid component in second of filtering associated gas of inlet end surge tank (9) progress, air inlet into the gas outlet of heat exchanger (8) from producing
The liquid of end surge tank (9) filtering is entered external transport pipeline (5) by pipeline, and the gas in inlet end surge tank (9) enters diaphragm
Compressor (10) is pressurized, and the liquid generated in diaphragm type compressor (10) enters external transport pipeline (5), membrane compresses by pipeline
Pressurized gas enters air cooler (11) by pipeline and cools down in machine (10), and the gas after cooling enters row by pipeline
Gas end surge tank (12), gas and liquid in exhaust end surge tank (12) pass through pipeline and enter external transport pipeline (5).
9. a kind of application method of the closed pressurization gathering system of oil well site associated gas according to claim 8, feature
Be: described in step 2, tertiary filter (7) is produced into heat exchanger (8), inlet end surge tank (9), diaphragm type compressor
(10), air cooler (11) and the temperature and pressure that are vented in surge tank (12) pass through control module (6) and are controlled, outer defeated pipe
The output flow of line (5) is monitored by the gas-liquid biphase flowmeter connected on external transport pipeline (5).
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