CN109000155B - Skid-mounted natural gas collecting device - Google Patents
Skid-mounted natural gas collecting device Download PDFInfo
- Publication number
- CN109000155B CN109000155B CN201810874958.1A CN201810874958A CN109000155B CN 109000155 B CN109000155 B CN 109000155B CN 201810874958 A CN201810874958 A CN 201810874958A CN 109000155 B CN109000155 B CN 109000155B
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- Prior art keywords
- separation
- double
- pipe
- cavity
- flash
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000003345 natural gas Substances 0.000 title claims abstract description 34
- 238000000926 separation method Methods 0.000 claims abstract description 83
- 239000007789 gas Substances 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000001704 evaporation Methods 0.000 claims abstract description 14
- 230000008020 evaporation Effects 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 12
- 239000002737 fuel gas Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract 2
- 239000010865 sewage Substances 0.000 abstract 1
- 238000013022 venting Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/06—Flash distillation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a skid-mounted natural gas collecting device, which comprises a conveying unit and a emptying and draining unit, wherein the conveying unit is used for conveying: from sled dress device entry has connected gradually electronic tee bend ball valve, gas collecting manifold, double-cylinder separation flash tank separation chamber and measurement system, and the pigging system is parallelly connected with measurement system, and conveying unit still includes the compressor that is used for the pressure boost and supplies the interior gas of standing from the pipeline of using oneself, the blowdown drainage unit: the emptying main pipe, the liquid discharge pipe and the sewage pipe are converged into a flash evaporation cavity of the double-barrel type separation flash tank, the flash evaporation cavity reaches an emptying torch after flash evaporation, produced water in the flash evaporation cavity of the double-barrel type separation flash tank is discharged through the liquid discharge pipe, emergency liquid discharge pipes are additionally arranged on the flash evaporation cavity of the double-barrel type separation flash tank and the flash evaporation cavity of the double-barrel type separation flash tank, and when the liquid discharge pipe has a slug flow, the emergency liquid discharge pipe can be used for discharging liquid. The beneficial effects are that: the number and the occupied area of the equipment in the station are effectively reduced, the construction period is shortened, the project cost is reduced, and the condition in the station is mastered more conveniently and rapidly.
Description
Technical Field
The invention relates to the field of natural gas gathering and transportation, in particular to a skid-mounted natural gas gathering device.
Background
Along with the increase of the utilization rate of natural gas resources, various domestic large gas field blocks increase the exploitation strength, and some remote mountain areas, gas fields with complex terrains and great exploitation difficulty gradually enter the exploitation stage.
Under the general condition, natural gas extracted from a single well is collected and conveyed through a gas collecting station, conveyed to a nearby centralized processing station through a gas conveying pipeline, purified and conveyed to an external gas conveying pipe network. Existing gas gathering stations typically have the functions of collecting gas, separating, pressurizing, metering, pigging, and self-service.
At present, most well sites have higher cost, particularly in remote areas, the site topography of a gas collecting station is complex, available leveling land is more limited, the number of equipment in the gas collecting station is more, the construction period is longer, and the labor cost is higher. In order to reduce the land feature area and the site construction cost of a gas station, skid-mounted integration of equipment in the gas station becomes a realistic problem in front of the eyes of various large gas field developers.
Therefore, an integrated gas collecting station with small occupied area, short production and construction period and low construction cost is needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a skid-mounted natural gas collecting device.
The aim of the invention is achieved by the following technical measures: the utility model provides a sled dress formula natural gas collection device, includes conveying unit and blowdown drainage unit, conveying unit: the gas production dry pipe is connected with a gas collection pipe through an electric three-way ball valve, the output end of the gas collection pipe is connected with a separation cavity of a double-cylinder separation flash tank, after gas production is separated by the separation cavity of the double-cylinder separation flash tank, one path of gas production goes to an outer pipeline, the other path of gas production goes to a self-use pipeline, a pipe cleaning system and a metering system are arranged on the outer pipeline, the pipe cleaning system is connected in parallel with the metering system, a compressor for pressurizing is further connected to the outer pipeline in front of the pipe cleaning system and the metering system, the gas inlet end and the gas outlet end of the compressor are respectively connected with the outer pipeline through the electric three-way ball valve, the self-use pipeline is sequentially connected with a ball valve, a pipeline filter, a pressure control valve, an intelligent precession flowmeter, a throttle valve and the self-use gas separator, after the gas production is separated by the self-use gas separator, one path goes to a discharging torch area, and the other path of gas production is used for wall hanging stove fuel; a venting and draining unit: the drainage pipe of the separation cavity of the dual-drum separation flash tank and the drainage pipe of the compressor are converged to the flash cavity of the dual-drum separation flash tank, the separated water enters the separation device for separation after being subjected to flash cavity separation of the dual-drum separation flash tank, finally the separated water enters the emptying torch, the drainage pipe comprises a drainage pipe outside the skid-mounted natural gas collecting device and a drainage pipe inside the skid-mounted natural gas collecting device, the drainage pipe inside the skid-mounted natural gas collecting device consists of the drainage pipe of an inlet of the skid-mounted natural gas collecting device, the drainage pipe on the collection pipe and the drainage pipe on the self-use pipeline, the produced water of the flash cavity of the dual-drum separation flash tank is discharged through the drainage pipe of the flash cavity of the dual-drum separation flash tank, and the flash cavity of the dual-drum separation flash tank is additionally provided with an emergency drainage pipe, and when the drainage pipe is in slug flow, the emergency drainage pipe can be adopted for drainage.
Further, the separation cavity of the double-barrel type separation flash tank and the flash cavity of the double-barrel type separation flash tank are made into a whole.
Further, the drain pipe of the separation cavity of the double-drum separation flash tank adopts a drain valve to drain liquid, and the flash cavity of the double-drum separation flash tank adopts a drain valve or an electric ball valve to remotely control the drain liquid.
Further, the separation cavity of the double-barrel separation flash tank and the emergency liquid discharge pipe of the flash cavity of the double-barrel separation flash tank adopt an electric ball valve and an electric control valve for liquid discharge.
Further, the skid-mounted natural gas collecting device is also provided with a plurality of safety valves which are respectively arranged between the gas collecting pipe and the emptying main pipe, between the self-use pipeline and the emptying main pipe and on the flash evaporation cavity of the double-barrel separation flash evaporation tank.
Compared with the prior art, the invention has the beneficial effects that: 1. through the integrated skid-mounted of each functional equipment in the gas gathering station, effectively reduce the quantity and the area of equipment in the station, shorten construction period, reduce project cost, it is more convenient, more swift master the condition in the station.
2. The air inlet adopts the tee bend ball valve to be used for admitting air and emptying flow switching, adopts T tee bend ball valve to switch when business turn over compressor flow, reduces valve quantity, and skid-mounted is more convenient.
The invention is described in detail below with reference to the drawings and the detailed description.
Drawings
Fig. 1 is a schematic structural diagram of a skid-mounted natural gas collection device.
Detailed Description
As shown in fig. 1, the skid-mounted natural gas collecting device comprises a conveying unit and a venting and draining unit, wherein the conveying unit is as follows: the gas production main pipe 1 is connected with the gas collection pipe 3 through an electric three-way ball valve 2, a throttle valve and a site display pressure transmission instrument are arranged on the gas collection pipe 3, the output end of the gas collection pipe 3 is connected with a double-cylinder separation flash tank separation cavity 4, a throttle valve and a site display pressure gauge and a site display liquid level observation gauge are arranged on the double-cylinder separation flash tank separation cavity 4, after gas production is separated through the double-cylinder separation flash tank separation cavity 4, one way of the gas production is transmitted to an output pipeline, the other way of the gas production is transmitted to a self-service pipeline, a pipe cleaning system 7 and a metering system 8 are arranged on the output pipeline, the pipe cleaning system 7 is formed by sequentially connecting a ball valve, a pipe cleaning valve and a ball valve, the metering system 8 is sequentially connected with the ball valve, the metering gauge and the metering system 8, a pipe cleaning compressor 6 for pressurizing is further connected to the output pipeline in front of the pipe cleaning system 7 and the metering system 8, the gas inlet end and the gas outlet end of the compressor 6 are respectively connected with the output pipeline through the electric three-way ball valve 2, the self-service pipeline is sequentially connected with a pipeline filter 17, an intelligent gas inlet valve 18, an intelligent gas inlet valve 19 and a gas outlet valve 10 and a self-service valve through the throttle valve 10, and a gas separator 11 are sequentially connected with the self-service pipeline after the self-service pipeline passes through the throttle valve and the air separator 10, and the self-service electromagnetic valve is controlled by the air separator 11, and the self-service station is controlled by the air separator 12, and the air separator is in the air valve is in the air-phase controlled region is in a gas-saving valve; a venting and draining unit: the drainage pipe of the separation cavity 4 of the dual-drum separation flash tank and the drainage pipe of the compressor 6 are converged to the flash cavity 5 of the dual-drum separation flash tank, the flash cavity 5 of the dual-drum separation flash tank is separated and then enters the separation device to be separated, and finally the flash cavity 13 is discharged, the drainage pipe comprises a drainage pipe 16 outside the skid-mounted natural gas collecting device and a drainage pipe inside the skid-mounted natural gas collecting device, the drainage pipe inside the skid-mounted natural gas collecting device consists of the drainage pipe of an inlet of the skid-mounted natural gas collecting device, the drainage pipe on the gas collecting pipe 3 and the drainage pipe on a self-use pipeline, produced water in the flash cavity 5 of the dual-drum separation flash tank is discharged through the drainage pipe of the flash cavity 5 of the dual-drum separation flash tank, and emergency drainage pipes are additionally arranged on the flash cavity 4 of the dual-drum separation flash tank and the flash cavity 5 of the dual-drum separation flash tank, and when a slug flow occurs in the drainage pipe, the emergency drainage pipe can be used for draining.
The separation cavity 4 of the double-cylinder separation flash tank and the flash cavity 5 of the double-cylinder separation flash tank are integrated.
The drain pipe of the separation cavity 4 of the double-drum separation flash tank adopts a drain valve to drain liquid, and the flash cavity 5 of the double-drum separation flash tank adopts a drain valve or an electric ball valve to remotely control the drain liquid.
The emergency liquid discharge pipes of the separation cavity 4 of the double-cylinder separation flash tank and the flash cavity 5 of the double-cylinder separation flash tank adopt an electric ball valve and an electric control valve for liquid discharge.
The skid-mounted natural gas collecting device is also provided with a plurality of safety valves which are respectively arranged between the gas collecting pipe 3 and the emptying main pipe, between the self-use pipeline and the emptying main pipe and on the flash evaporation cavity 5 of the double-barrel separation flash evaporation tank.
Several single wells (4-16 can be) come gas and get into the gas collecting tube and sink 3 through the gas transmission pipeline connected with the electric three-way ball valve 2 respectively, and the electric three-way ball valve 2 has the functions of production, emptying flow switching and entering station and cutting off. The collected wellhead incoming gas enters a double-cylinder separation flash tank separation cavity 4 to remove solid and liquid impurities in the natural gas, and then enters an output pipeline of the device. According to the pressure condition of the natural gas, the natural gas is subjected to flow switching by the electric three-way ball valve 2 and enters the metering system 8 or the compressor 6 for pressurization; the pressurized natural gas is switched back to the device output pipeline through the electric three-way ball valve 2 and enters the metering system 8 or the pipe cleaning system 7.
The drainage of the water produced by the separation cavity 4 of the double-barrel separation flash tank adopts a mode of combining normal drainage and emergency drainage, the normal drainage adopts a drain valve to drain to the flash cavity 5 of the double-barrel separation flash tank for flash evaporation, and when a slug flow exists, an emergency drainage flow is opened to enter the water production tank outside the sledge besides the drainage of the drain valve.
The blow-down pipe, the compressor blow-down pipe and the liquid discharge pipe of the separation cavity 4 of the double-barrel separation flash tank in the skid-mounted natural gas collecting device all enter the flash cavity 5 of the double-barrel separation flash tank, so that the purposes of flash evaporation dissolved gas of produced water and air separation of torch are realized.
And the skid-mounted natural gas collecting device is internally provided with a self-use pipeline. Before natural gas enters an output pipeline for metering, the natural gas is subjected to pressure regulation through a self-supporting valve rear pressure control valve 18, then is metered through an intelligent precession flowmeter 19, enters a self-gas separator 10, separates liquid generated by depressurization, and is supplied to the in-station wall-mounted boiler 12 through separated fuel gas. Meanwhile, one path of fuel gas is led to be used as the fuel gas for igniting the torch.
The skid-mounted natural gas collecting device is also internally provided with a plurality of on-site display meters for monitoring pressure, temperature, liquid level and flow in real time.
Claims (3)
1. The utility model provides a sled dress formula natural gas collection device which characterized in that: the device comprises a conveying unit and a emptying and draining unit, wherein the conveying unit is used for conveying: the gas production dry pipe is connected with a gas collection pipe through an electric three-way ball valve, the output end of the gas collection pipe is connected with a separation cavity of a double-cylinder separation flash tank, after gas production is separated by the separation cavity of the double-cylinder separation flash tank, one path of gas production goes to an outer pipeline, the other path of gas production goes to an outer pipeline, a pipe cleaning system and a metering system are arranged on the outer pipeline, the pipe cleaning system is connected in parallel with the metering system, a compressor for pressurizing is further connected to the outer pipeline in front of the pipe cleaning system and the metering system, the gas inlet end and the gas outlet end of the compressor are respectively connected with the outer pipeline through the electric three-way ball valve, the ball valve, a pipeline filter, a pressure control valve, an intelligent precession flowmeter, a throttle valve and an outer gas separator are sequentially connected to the outer pipeline, after the gas production is separated by the outer gas separator, one path of gas production goes to a discharging torch area, and the other path of gas production is supplied to a wall-mounted furnace fuel gas discharging and discharging a discharging unit: the system comprises a vacuum header pipe, a liquid discharge pipe of a separation cavity of a double-cylinder separation flash tank and a compressor drain pipe, wherein the liquid discharge pipe and the compressor drain pipe are converged into the flash cavity of the double-cylinder separation flash tank, the flash cavity of the double-cylinder separation flash tank is separated and then enters a separation device to be separated, and finally the flash cavity is discharged to a vacuum torch; the separation cavity of the double-drum separation flash tank and the flash cavity of the double-drum separation flash tank are made into a whole; the liquid discharge pipe of the separation cavity of the double-drum separation flash tank adopts a drain valve to discharge liquid, and the flash cavity of the double-drum separation flash tank adopts a drain valve or an electric ball valve to remotely control the liquid discharge.
2. The skid-mounted natural gas collection device of claim 1, wherein: the separation cavity of the double-drum separation flash tank and the emergency liquid discharge pipe of the flash cavity of the double-drum separation flash tank adopt an electric ball valve and an electric control valve for liquid discharge.
3. The skid-mounted natural gas collection device of claim 1, wherein: the skid-mounted natural gas collecting device is further provided with a plurality of safety valves, and the safety valves are respectively arranged between the gas collecting pipe and the emptying main pipe, between the self-use pipeline and the emptying main pipe and on the flash evaporation cavity of the double-barrel separation flash evaporation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810874958.1A CN109000155B (en) | 2018-08-02 | 2018-08-02 | Skid-mounted natural gas collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810874958.1A CN109000155B (en) | 2018-08-02 | 2018-08-02 | Skid-mounted natural gas collecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109000155A CN109000155A (en) | 2018-12-14 |
| CN109000155B true CN109000155B (en) | 2024-04-19 |
Family
ID=64595071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810874958.1A Active CN109000155B (en) | 2018-08-02 | 2018-08-02 | Skid-mounted natural gas collecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109000155B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681780B (en) * | 2019-02-21 | 2023-10-31 | 中国石油工程建设有限公司 | Complete gas well supercharging system based on reciprocating compressor and operation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202746938U (en) * | 2012-07-19 | 2013-02-20 | 中国石油天然气股份有限公司 | Skid-mounted gas collecting, metering and pipe cleaning device |
| CN203393117U (en) * | 2013-06-18 | 2014-01-15 | 中国石油天然气股份有限公司 | Separation flash distillation device |
| CN103968249A (en) * | 2014-02-25 | 2014-08-06 | 陕西航天德林机械制造有限公司 | Natural gas collection integrated device |
| CN203907219U (en) * | 2014-02-25 | 2014-10-29 | 陕西航天德林机械制造有限公司 | Natural gas collecting all-in-one integrated device |
| CN206802758U (en) * | 2017-05-25 | 2017-12-26 | 西安长庆科技工程有限责任公司 | With gas collection, separation, metering and pigging ability the defeated sledge of coal bed gas collection |
| CN208670598U (en) * | 2018-08-02 | 2019-03-29 | 杰瑞石油天然气工程有限公司 | Skid-mounted type natural gas collecting device |
-
2018
- 2018-08-02 CN CN201810874958.1A patent/CN109000155B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202746938U (en) * | 2012-07-19 | 2013-02-20 | 中国石油天然气股份有限公司 | Skid-mounted gas collecting, metering and pipe cleaning device |
| CN203393117U (en) * | 2013-06-18 | 2014-01-15 | 中国石油天然气股份有限公司 | Separation flash distillation device |
| CN103968249A (en) * | 2014-02-25 | 2014-08-06 | 陕西航天德林机械制造有限公司 | Natural gas collection integrated device |
| CN203907219U (en) * | 2014-02-25 | 2014-10-29 | 陕西航天德林机械制造有限公司 | Natural gas collecting all-in-one integrated device |
| CN206802758U (en) * | 2017-05-25 | 2017-12-26 | 西安长庆科技工程有限责任公司 | With gas collection, separation, metering and pigging ability the defeated sledge of coal bed gas collection |
| CN208670598U (en) * | 2018-08-02 | 2019-03-29 | 杰瑞石油天然气工程有限公司 | Skid-mounted type natural gas collecting device |
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| Publication number | Publication date |
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| CN109000155A (en) | 2018-12-14 |
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