CN104930348B - One kind switches and is vented skid-mounted device based on big collecting well group high-low pressure - Google Patents
One kind switches and is vented skid-mounted device based on big collecting well group high-low pressure Download PDFInfo
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- CN104930348B CN104930348B CN201510380553.9A CN201510380553A CN104930348B CN 104930348 B CN104930348 B CN 104930348B CN 201510380553 A CN201510380553 A CN 201510380553A CN 104930348 B CN104930348 B CN 104930348B
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Abstract
Switched the invention provides one kind based on big collecting well group high-low pressure and be vented skid-mounted device, including external transport pipeline, the external transport pipeline is in skid, described external transport pipeline one end is provided with first interface, second interface side by side, the other end is provided with gas outlet, it is communicated with the external transport pipeline after the lp venting pipeline of parallel connection, supercharging pipeline, supercharging and feeds back pipeline, pipeline is fed back in skid after the lp venting pipeline, supercharging pipeline, supercharging.The present invention provide it is this based on big collecting well group high-low pressure switch and be vented skid-mounted device, the different demands of high pressure and low-pressure gas well supercharging and emptying can be met simultaneously, when downstream gas gathering station or treatment plant because accident causes to stop in emergency, big collecting well group safety in production can be ensured, while reducing occupation of land, Accelerating The Construction progress, saving cost.
Description
Technical field
The invention belongs to gas field gathering-transferring technology field, and in particular to one kind is switched and is vented based on big collecting well group high-low pressure
Skid-mounted device.
Background technology
With the development of national economy, country is increasing to the demand of the energy, as the natural gas of clean energy resource, development
Speed is quickly.As the surface construction part of the construction of natural gas fields, construction scale is big, builds station quantity many.Big cluster well is because of it
Ground area is small, management point is few, the low many advantages of construction cost and in Gas field construction popularize in an all-round way.Big cluster well is i.e. at 1
16~20 implication wells are built in well site, and the high 6MPa~10MPa of well group early stage pressure, yield is high（34×104m3~112 × 104m3）.
Because each gas well liquid loading cycle is different, tolerance, pressure drop rate of regression are different, and following ask is there are using conventional design
Topic：
1st, a big collecting well group part gas well is high-pressure gas well, and part gas well is that mesolow well needs supercharging outer
It is defeated；
2nd, high-low pressure gas well differing pressure is big, and high-low pressure blowdown system can not be mutually as standby blowdown system；
3rd, big collecting well group external transport pipeline 29 is caused to be pressed because accident causes to stop in emergency due to downstream gas gathering station or treatment plant
Fluctuation is larger, natural gas backflow, influences big collecting well group safety in production；
4th, due to big collecting well group from treatment plant farther out, recovered water is as used the automobile roping of routine or individually laying water delivery
The investment of pipelined expense is high, uneconomical.
The content of the invention
It is an object of the invention to provide a kind of saving cost, reduce the gas that occupation of land, Accelerating The Construction progress are applicable big cluster well
Field gathering and transporting device.
Therefore, switch based on big collecting well group high-low pressure the invention provides one kind and be vented skid-mounted device, including it is outer defeated
Pipeline, the external transport pipeline is in skid, and described external transport pipeline one end is provided with first interface, second interface, the other end side by side
It is connected with gas outlet, pipe is fed back after the lp venting pipeline of parallel connection, supercharging pipeline, supercharging are communicated with the external transport pipeline
Line, pipeline is fed back in skid after the lp venting pipeline, supercharging pipeline, supercharging；
The lp venting piping inlet end is connected with external transport pipeline, and the other end is connected with lp venting mouthful, the import
Choke valve, the first ball valve, filter, flowmeter, the second ball valve are sequentially provided between end and lp venting mouthful；
The supercharging pipeline is provided with the 3rd ball valve and the 3rd interface, and pipeline is fed back after the supercharging provided with the 4th ball valve and the
Four interfaces.
Also include high pressure blow-down pipe, described high pressure blow-down pipe one end is connected with external transport pipeline, and the other end is pressed with height
Eat dishes without rice or wine to connect, the high pressure blow-down pipe is in parallel with feedback pipeline after lp venting pipeline, supercharging pipeline, supercharging, and the height is pressed
Blank pipe line is provided with the first urgent block valve.
Also include high pressure and be vented branch line, connected between first ball valve and filter with high pressure emptying branch line one end, should
The high pressure emptying branch line other end is connected with high pressure blow-down pipe, and the high pressure emptying branch line is provided with safety valve.
The second urgent block valve is provided with the external transport pipeline, before gas outlet.
Also include blow-down pipe, connected between the gas outlet and the second urgent block valve with blow-down pipe one end,
The blow-down pipe other end is connected with drain, and the 5th ball valve, section are sequentially provided between the blow-down pipe entrance point and drain
Flow stop emptying valve.
Also include sewer line, described sewer line one end is connected with the 5th interface, the other end and the second urgent block valve
Connected with feeding back pipeline after supercharging between the connectivity points of external transport pipeline, provided with only between the connectivity points and the second urgent block valve
Return valve.
The beneficial effects of the invention are as follows：The present invention provide it is this based on big collecting well group high-low pressure switch and be vented skid
Device, the different demands of high pressure and low-pressure gas well supercharging and emptying can be met simultaneously, when downstream gas gathering station or treatment plant are because of accident
Cause to stop in emergency, it is ensured that big collecting well group safety in production, while reducing occupation of land, Accelerating The Construction progress, saving cost.
It is described in further details below in conjunction with accompanying drawing.
Brief description of the drawings
Fig. 1 is the overall schematic of the present invention.
In figure：1st, first interface；2nd, second interface；3rd, the 3rd interface；4th, the 4th interface；5th, the 5th interface；6th, throttle
Valve；7th, the first ball valve；8th, safety valve；9th, filter；10th, flowmeter；11st, the second ball valve；12nd, the first urgent block valve；13rd,
Three ball valves；14th, ball valve；15th, the 4th ball valve；16th, check-valves；17th, the second urgent block valve；18th, the 5th ball valve；19th, throttling is cut
Only atmospheric valve；20th, lp venting mouthful；21st, high pressure drain；22nd, drain；23rd, gas outlet；24th, skid；25th, low pressure
Blow-down pipe；26th, high pressure blow-down pipe；27th, blow-down pipe；28th, sewer line；29th, external transport pipeline；30th, it is pressurized pipeline；31、
Pipeline is fed back after supercharging；32nd, high pressure emptying branch line.
Embodiment
Embodiment 1：
Present embodiments provide and switch and be vented skid-mounted device based on big collecting well group high-low pressure the invention provides one kind,
Including external transport pipeline 29, the external transport pipeline 29 is in skid 24, and described one end of external transport pipeline 29 is provided with first interface side by side
1st, second interface 2, the other end is provided with the lp venting pipeline that parallel connection is communicated with gas outlet 23, the external transport pipeline 29
25th, pipeline 31 is fed back after supercharging pipeline 30, supercharging, pipeline 31 is fed back after the lp venting pipeline 25, supercharging pipeline 30, supercharging
In skid 24；
The entrance point of lp venting pipeline 25 is connected with external transport pipeline 29, and the other end is connected with lp venting mouthful 20, institute
State and choke valve 6, the first ball valve 7, filter 9, flowmeter 10, the second ball valve 11 be provided between entrance point and lp venting mouthful 20,
Lp venting mouthful 20；
The supercharging pipeline 30 is provided with the 3rd ball valve 13 and the 3rd interface 3, and pipeline 31 is fed back after the supercharging and is provided with the 4th
The interface 4 of ball valve 15 and the 4th.
The skid-mounted unit that the present embodiment is provided is applied to big collecting well group, there is the two kinds of production procedures of high pressure and low pressure, such as Fig. 1
It is shown：
Low pressure process：
When first interface 1 and the gas of second interface 2 are low pressure natural gas, close on external transport pipeline 29, positioned at increasing
Pressure pipeline 30 and supercharging feed back pipeline with the ball valve 14 between the connectivity points of external transport pipeline 29, the natural gas come from production technology upstream
After collecting through first interface 1, second interface 2 in external transport pipeline 29, natural gas is transported to by the 3rd ball valve 13, the 3rd interface 3
Compressor boost, when natural gas is after compressor boost, entering supercharging by the 4th interface 4 feeds back pipeline, passes through the 4th ball
Valve 15 transports to downstream after transporting to gas outlet 23.
When low pressure natural gas needs emptying, low pressure natural gas enters lp venting pipeline 25 by external transport pipeline 29, successively
By choke valve 6, the first ball valve 7, filter 9, flowmeter 10, the second ball valve 11, emptying is finally transported to by lp venting mouthful 20
Torch.
High-pressure process：
When first interface 1 and the gas of second interface 2 are high-pressure natural gas, open on external transport pipeline 29, positioned at increasing
Pressure pipeline 30 and supercharging feed back pipeline with the ball valve 14 between the connectivity points of external transport pipeline 29, the natural gas come from production technology upstream
After collecting through first interface 1, second interface 2 in external transport pipeline 29, natural gas is transported to after gas outlet 23 by ball valve 14
Transport to downstream.
When high-pressure natural gas needs emptying, high-pressure natural gas enters lp venting pipeline 25, high pressure by external transport pipeline 29
Pressure is reduced to low pressure by natural gas by choke valve 6 from high pressure, after throttling, passes sequentially through the first ball valve 7, filter 9, flowmeter
10th, the second ball valve 11, is finally transported to by lp venting mouthful 20 and released flare.
This of the present embodiment offer is switched based on big collecting well group high-low pressure and is vented skid-mounted device, and height can be met simultaneously
The different demands that pressure and low-pressure gas well are pressurized and be vented, and reduce occupation of land, Accelerating The Construction progress, save cost.
Embodiment 2：
On the basis of embodiment 1, in addition to high pressure blow-down pipe 26, described one end of high pressure blow-down pipe 26 and outer defeated pipe
Line 29 is connected, and the other end is connected with high pressure drain 21, the high pressure blow-down pipe 26 and lp venting pipeline 25, supercharging pipeline
30th, the parallel connection of pipeline 31 is fed back after being pressurized, the high pressure blow-down pipe 26 is provided with the first urgent block valve 12.
It can not be opened when choke valve 6 breaks down, when high-pressure natural gas needs emptying, open the first urgent block valve 12,
High-pressure natural gas enters high pressure blow-down pipe 26 by external transport pipeline 29, is transported to and released flare by high pressure drain 21.
Embodiment 3：
On the basis of embodiment 2, in addition to high pressure emptying branch line 32, with height between first ball valve 7 and filter 9
The connection of the one end of sky branch line 32 is pressed, the high pressure emptying other end of branch line 32 is connected with high pressure blow-down pipe 26, the high pressure emptying
Branch line 32 is provided with safety valve 8.
In the present embodiment, when choke valve 6 occurs in that pressure is higher than 8 level pressure of safety valve after failure, throttling, second is closed
Ball valve 11, natural gas enters high pressure by choke valve 6, the first ball valve 7 and is vented branch line 32, then is pressed by safety valve 8 into height
Blank pipe line 26, is finally transported to by high pressure drain 21 and released flare；Wherein, safety valve 8 can prevent the incoming low pressure of high-pressure natural gas
Blow-down pipe 25.
Embodiment 4：
On the basis of embodiment 1, the second urgent block valve is provided with the external transport pipeline 29, before gas outlet 23
17。
Also including blow-down pipe 27, with blow-down pipe 27 1 between the urgent block valve 17 of the gas outlet 23 and second
End connection, the other end of blow-down pipe 27 is connected with drain 22, between the entrance point of blow-down pipe 27 and drain 22 successively
Provided with the 5th ball valve 18, choke stop evacuation valve 19.
Also include sewer line 28, described one end of sewer line 28 is connected with the 5th interface 5, the other end and second is promptly cut
Disconnected valve 17 after supercharging between connectivity points of the feedback pipeline 31 with external transport pipeline 29 with connecting, the connectivity points and the second urgent block valve
Check-valves 16 is provided between 17.
When downstream tube says existing failure, natural gas enters blow-down pipe 27 by external transport pipeline 29, by the 5th ball valve 18,
Choke stop evacuation valve 19, drain 22 are transported to and released flare.Enter sewage when high-pressure sewage house steward carrys out liquid by the 5th interface 5
Pipeline 28, after high-pressure sewage is mixed by sewer line 28 into external transport pipeline 29 with natural gas, gas-liquid delivery transports to downstream,
To prevent mixed defeated natural gas backflow, check-valves 16 is set.
The present invention provide it is this based on big collecting well group high-low pressure switch and be vented skid-mounted device, high pressure can be met simultaneously
The different demands for being pressurized and being vented with low-pressure gas well, when downstream gas gathering station or treatment plant because accident causes to stop in emergency, it is ensured that
Big collecting well group safety in production, while reducing occupation of land, Accelerating The Construction progress, saving cost.
The part that the present embodiment is not specifically described belongs to the common knowledge and known technology of the art, herein not
Another one describes in detail.
It is exemplified as above be only to the present invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (4)
1. one kind switches and is vented skid-mounted device, including external transport pipeline based on big collecting well group high-low pressure（29）, it is characterised in that：
The external transport pipeline（29）Located at skid（24）On, the external transport pipeline（29）One end is provided with first interface side by side（1）, second connect
Mouthful（2）, the other end and gas outlet（23）Connection, the external transport pipeline（29）On be communicated with parallel connection lp venting pipeline
（25）, supercharging pipeline（30）, feed back pipeline after supercharging（31）, the lp venting pipeline（25）, supercharging pipeline（30）, after supercharging
Feed back pipeline（31）It is located at skid（24）On；
The lp venting pipeline（25）Entrance point and external transport pipeline（29）Connection, the other end and lp venting mouthful（20）Connection,
The entrance point and lp venting mouthful（20）Between be sequentially provided with choke valve（6）, the first ball valve（7）, filter（9）, flowmeter
（10）, the second ball valve（11）；
The supercharging pipeline（30）Provided with the 3rd ball valve（13）With the 3rd interface（3）, pipeline is fed back after the supercharging（31）It is provided with
4th ball valve（15）With the 4th interface（4）；
Also include high pressure blow-down pipe（26）, the high pressure blow-down pipe（26）One end and external transport pipeline（29）Connection, the other end
With high pressure drain（21）Connection, the high pressure blow-down pipe（26）With lp venting pipeline（25）, supercharging pipeline（30）, after supercharging
Feed back pipeline（31）Parallel connection, the high pressure blow-down pipe（26）It is provided with the first urgent block valve（12）, the external transport pipeline
（29）Upper, gas outlet（23）Before be provided with the second urgent block valve（17）.
2. one kind according to claim 1 is switched based on big collecting well group high-low pressure and is vented skid-mounted device, its feature exists
In：Also include high pressure and be vented branch line（32）, first ball valve（7）And filter（9）Between with high pressure be vented branch line（32）One
End connection, high pressure emptying branch line（32）The other end and high pressure blow-down pipe（26）Connection, the high pressure is vented branch line（32）On
Provided with safety valve（8）.
3. one kind according to claim 1 is switched based on big collecting well group high-low pressure and is vented skid-mounted device, its feature exists
In：Also include blow-down pipe（27）, the gas outlet（23）With the second urgent block valve（17）Between with blow-down pipe
（27）One end is connected, blow-down pipe（27）The other end and drain（22）Connection, the blow-down pipe（27）Entrance point and emptying
Mouthful（22）Between be sequentially provided with the 5th ball valve（18）, choke stop evacuation valve（19）.
4. one kind according to claim 1 is switched based on big collecting well group high-low pressure and is vented skid-mounted device, its feature exists
In：Also include sewer line（28）, the sewer line（28）One end and the 5th interface（5）Connection, the other end is urgent with second
Block valve（17）With feeding back pipeline after supercharging（31）Same external transport pipeline（29）Connectivity points between connect, the connectivity points and second tight
Anxious block valve（17）Between be provided with check-valves（16）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380553.9A CN104930348B (en) | 2015-07-02 | 2015-07-02 | One kind switches and is vented skid-mounted device based on big collecting well group high-low pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380553.9A CN104930348B (en) | 2015-07-02 | 2015-07-02 | One kind switches and is vented skid-mounted device based on big collecting well group high-low pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104930348A CN104930348A (en) | 2015-09-23 |
| CN104930348B true CN104930348B (en) | 2017-07-25 |
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|---|---|---|---|
| CN201510380553.9A Active CN104930348B (en) | 2015-07-02 | 2015-07-02 | One kind switches and is vented skid-mounted device based on big collecting well group high-low pressure |
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| Country | Link |
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| CN (1) | CN104930348B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968662A (en) * | 2017-04-29 | 2017-07-21 | 西安长庆科技工程有限责任公司 | A kind of portable emptying liquid-separation skid-mounted unit with function of measuring of dropping a hint |
| CN108980614B (en) * | 2018-08-20 | 2024-04-09 | 克拉玛依市富城天然气有限责任公司 | Oil testing, gas testing and recycling integrated natural gas treatment system |
| CN111075403B (en) * | 2019-12-26 | 2021-07-06 | 山西晋城无烟煤矿业集团有限责任公司 | Intelligent gathering and transportation method for ground high-low pressure gas source of integrated coal bed gas well |
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| CN201391753Y (en) * | 2009-04-08 | 2010-01-27 | 中国石油天然气股份有限公司 | Condensate gas field blow-down gas pressure stabilization recovery device |
| CN203231312U (en) * | 2013-03-13 | 2013-10-09 | 中国石油天然气股份有限公司 | pull rope type high-low pressure combined emptying torch |
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| CN203628274U (en) * | 2013-12-06 | 2014-06-04 | 天津华迈燃气装备股份有限公司 | Conversion apparatus converting high-middle pressure natural gas into low-middle pressure natural for output |
| CN204785563U (en) * | 2015-07-02 | 2015-11-18 | 西安长庆科技工程有限责任公司 | It prizes dress device to switch and empty based on big cluster well high -low pressure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2358975A4 (en) * | 2008-11-12 | 2017-04-12 | Exxonmobil Upstream Research Company | Vessel compressor methods and systems |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201391753Y (en) * | 2009-04-08 | 2010-01-27 | 中国石油天然气股份有限公司 | Condensate gas field blow-down gas pressure stabilization recovery device |
| CN203231312U (en) * | 2013-03-13 | 2013-10-09 | 中国石油天然气股份有限公司 | pull rope type high-low pressure combined emptying torch |
| CN203628280U (en) * | 2013-11-08 | 2014-06-04 | 中国石油天然气股份有限公司 | Natural gas emptying devices |
| CN203628274U (en) * | 2013-12-06 | 2014-06-04 | 天津华迈燃气装备股份有限公司 | Conversion apparatus converting high-middle pressure natural gas into low-middle pressure natural for output |
| CN204785563U (en) * | 2015-07-02 | 2015-11-18 | 西安长庆科技工程有限责任公司 | It prizes dress device to switch and empty based on big cluster well high -low pressure |
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| CN104930348A (en) | 2015-09-23 |
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