CN104929610A - Natural gas production and separation skid-mounted unit based on large cluster well group - Google Patents
Natural gas production and separation skid-mounted unit based on large cluster well group Download PDFInfo
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- CN104929610A CN104929610A CN201510372398.6A CN201510372398A CN104929610A CN 104929610 A CN104929610 A CN 104929610A CN 201510372398 A CN201510372398 A CN 201510372398A CN 104929610 A CN104929610 A CN 104929610A
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Abstract
The invention provides a natural gas production and separation skid-mounted unit based on a large cluster well group. The skid-mounted unit comprises a gas-liquid separator. The inlet end of the gas-liquid separator is connected with an inlet cut-off valve. The top outlet end is connected with an outlet cut-off valve. The bottom outlet end is connected with a drainage pipeline. The drainage pipeline is provided with a first drainage cut-off valve, a drainage control valve, and a second drainage cut-off valve. The gas-liquid separator is internally at least provided with a liquid level transmitter. The gas-liquid separator, the inlet cut-off valve, the outlet cut-off valve, and the drainage pipeline are installed on a skid base. The natural gas production and separation skid-mounted unit based on a large cluster well group is integrated with natural gas unloading and automatic drainage, and the separating device and the natural gas unloading and automatic drainage pipelines and auxiliary pipelines are integrated on the skid base, so the skid-mounted unit is convenient to move and install. The skid-mounted unit adapts to rolling development of a low permeability gas field large well group, and development cost of a low permeability gas field is reduced.
Description
Technical field
The present invention relates to a kind of production based on large collecting well group natural gas and be separated skid-mounted unit, specifically a kind of natural gas of sledge dressization produces separator, integrated natural gas vent and automatic liquid-drainage function.
Background technology
The natural gas exploiting out from gas well, is often with some liquid (water and condensate) and solid impurity (as landwaste dust) etc.These impurity are corrosion pipeline, equipment, instrument not only, but also can block valve, the normal production of pipeline impact.Therefore, the fluid come from well site must carry out initial gross separation in gas gathering station, removes the formation water, condensate water, the condensate that carry in natural gas, and the solid matter such as a small amount of sand taken out of from gas well.
Natural gas is produced and is separated Main Function is complete many mouthfuls of production gas wells to concentrate initial gross separation in well site or gas gathering station.Because gravity separator structure is simple in the production upstream of gas field, equipment making is simple, and resistance is little, and equipment investment is low; The particulate that separating particles diameter is greater than 100 μm, the drop that in outlet band mist eliminator divided gas flow, diameter is greater than 10-30 μm.Gravity separator can meet the requirement of gas field production upstream very well, is adopted in a large number in the initial gross separation of gas field.
Low permeability gas field well yield is low, and decline rate is fast; Production rate-maintenance capability is poor, gas well lifetime is short, initial stage well head pressure is high, pressure declines rapidly in a short time, major part is in low pressure production status, and current low permeability gas field mainly adopts large collecting well group rolling ladder development scheme, and initial stage scale of station is larger, production decline is very fast, and field middle and later periods output of standing is lower.
Separator traditional at present adopts in-site installation mode, and on-the-spot occupation of land is large, and flow process is installed complicated, causes on-the-spot field land area of standing large.On-the-spot fixed installation mode can not meet the requirement of the large well group exploitation of low permeability gas field, and along with the exploitation in gas field, during the middle and later periods, tolerance diminishes, and cause the rich amount of separation large, device processes ability is wasted.
Separator device discharge opeing arranges unreasonable, often causes natural gas in discharge opeing to seal in liquid phase systems, or discharge opeing is not smooth, causes eliminator effect greatly to reduce, and upstream device and pipeline band liquid seriously, have a strong impact on gas field safety in production.Field control detection level is lower, can not realize complete unmanned, adds field, station personnel labor intensity.
Summary of the invention
The object of the invention is existing natural gas and produce that separator floor space is large, installation procedure is complicated and the problem of inferior separating effect.
For this reason, the invention provides a kind of production based on large collecting well group natural gas and be separated skid-mounted unit, comprise gas-liquid separator, the entrance point of gas-liquid separator is connected with import block valve, top exit end is connected with outlet block valve, and outlet at bottom end is connected with tapping line;
Tapping line is provided with the first discharge opeing block valve, discharge opeing control valve, the second discharge opeing block valve, and the first discharge opeing block valve is located near outlet at bottom end side, and discharge opeing control valve is located between the first discharge opeing block valve and the second discharge opeing block valve;
A fluid level transmitter is at least provided with in described gas-liquid separator;
Described gas-liquid separator, import block valve, outlet block valve, tapping line are installed on sledge seat.
The top of described gas-liquid separator is connected with safe pipeline, safe pipeline is provided with safety valve, be connected with blow-down pipe between the arrival end of safety valve and the port of export, blow-down pipe is provided with emptying block valve and emptying flow control valve, and emptying block valve is located at the arrival end side near safety valve.
The port of export of described second discharge opeing block valve is provided with restriction orifice.
The bottom of described gas-liquid separator is connected with blowdown pipeline, and blowdown pipeline is provided with blowoff valve.
Mist eliminator is provided with near top exit end side in gas-liquid separator.
The junction of the port of export of described entrance point, top exit end, the first discharge opeing block valve, safe pipeline and gas-liquid separator is equipped with word blind plate.
Described safe pipeline, blow-down pipe, blowdown pipeline are installed on sledge seat.
Described gas-liquid separator adopts horizontal type gas and liquid separator.
Beneficial effect of the present invention: this production based on large collecting well group natural gas provided by the invention is separated skid-mounted unit, integrated natural gas vent and automatic drain, separation equipment and natural gas vent and automatic drain and auxiliary line are all integrated on a sledge seat, convenient mobile and installation, adapt to the large well group rolling development of low permeability gas field, reduce low permeability gas field development cost.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 produces based on large collecting well group natural gas the schematic diagram being separated skid-mounted unit.
Description of reference numerals: 1, import block valve; 2, entrance point; 3, gas-liquid separator; 4, top exit end; 5, block valve is exported; 6, outlet at bottom end; 7, fluid level transmitter; 8, tapping line; 9, emptying block valve; 10, emptying flow control valve; 11, safety valve; 12, the first discharge opeing block valve; 13, blowoff valve; 14, blowdown pipeline; 15, discharge opeing control valve; 16, the second discharge opeing block valve; 17, restriction orifice; 18, sledge seat; 19, safe pipeline; 20, blow-down pipe; 21, mist eliminator.
Detailed description of the invention
embodiment 1:
As shown in Figure 1, the invention provides a kind of production based on large collecting well group natural gas and be separated skid-mounted unit, comprise gas-liquid separator 3, the entrance point 2 of gas-liquid separator 3 is connected with import block valve 1, top exit end 4 is connected with outlet block valve 5, and outlet at bottom end 6 is connected with tapping line 8; Tapping line 8 is provided with the first discharge opeing block valve 12, discharge opeing control valve 15, second discharge opeing block valve 16, first discharge opeing block valve 12 is located near outlet at bottom end 6 side, and discharge opeing control valve 15 is located between the first discharge opeing block valve 12 and the second discharge opeing block valve 16; A fluid level transmitter 7 is at least provided with in described gas-liquid separator 3; Described gas-liquid separator 3, import block valve 1, outlet block valve 5, tapping line 8 are installed on sledge seat 18.
Produce based on large collecting well group natural gas the course of work that is separated skid-mounted unit and operating principle as follows:
Gas well natural gas carrys out gas through import block valve 1 to gas-liquid separator 3, in gas-liquid separator 3, carry out gas-liquid separation, and the oil water mixture processed through gas-liquid separator 3 enters downstream liquid storage facilities by the tapping line 8 of gas-liquid separator 3; Gas is gone out from outlet block valve 5 and is entered upstream device.
It should be noted that, before oil water mixture enters downstream liquid storage facilities by tapping line 8, the first discharge opeing block valve 12 and the second discharge opeing block valve 16 need be opened in advance, in order to prevent single valve leaks and convenient maintenance, as shown in Figure 1, the first discharge opeing block valve 12 in the present embodiment is provided with 2, exports block valve 5 simultaneously and is provided with 2.
Discharge opeing control valve 15 and fluid level transmitter 7 carry out chain control, when the liquid level of fluid level transmitter 7 is low, turn down the aperture of discharge opeing control valve 15, during the liquid level height of fluid level transmitter 7, open the aperture of large discharge opeing control valve 15, ensure that liquid level continues normal production, adapt to the change of gas well Liquid output, maintenance equipment is normally produced.
Producing separation skid-mounted unit based on large collecting well group natural gas is a kind of sledge dress integrating device, and all devices is all integrated on a sledge seat 18, and convenient mobile, floor space is little, is suitable for the exploitation needs in gas field.
Separator traditional at present adopts in-site installation mode, and on-the-spot occupation of land is large, and flow process is installed complicated, causes on-the-spot field land area of standing large.On-the-spot fixed installation mode can not meet the requirement of the large well group exploitation of low permeability gas field, and along with the exploitation in gas field, during the middle and later periods, tolerance diminishes, and cause the rich amount of separation large, device processes ability is wasted.This production based on large collecting well group natural gas provided by the invention is separated skid-mounted unit, integrated natural gas vent and automatic drain, separation equipment and natural gas vent and automatic drain and auxiliary line are all integrated on a sledge seat, convenient mobile and installation, adapt to the large well group rolling development of low permeability gas field, reduce low permeability gas field development cost.
embodiment 2:
On the basis of embodiment 2, the top of described gas-liquid separator 3 is connected with safe pipeline 19, safe pipeline 19 is provided with safety valve 11, blow-down pipe 20 is connected with between the arrival end of safety valve 11 and the port of export, blow-down pipe 20 is provided with emptying block valve 9 and emptying flow control valve 10, and emptying block valve 9 is located at the arrival end side near safety valve 11.
When carrying out atmospheric pressure and exceeding the design pressure of gas-liquid separator 3, safety valve 11 is opened automatically, carries out pressure releasing, ensures device security.When needs maintenance or when stopping test and measuring work, by opening emptying block valve 9 and emptying flow control valve 10 carries out the controlled emptying manipulation of natural gas.
embodiment3
:
On the basis of embodiment 1 or 2, the port of export of described second discharge opeing block valve 16 is provided with restriction orifice 17.Restriction orifice 17 is for limiting the flow of oil water mixture or reducing pressure.
embodiment 4:
On the basis of embodiment 1, the bottom of described gas-liquid separator 3 is connected with blowdown pipeline 14, and blowdown pipeline 14 is provided with blowoff valve 13.Dirt impurity in gas-liquid separator 3 is discharged by blowoff valve 13, ensures the normal operation of gas-liquid separator 3.
embodiment 5:
On the basis of embodiment 1, in gas-liquid separator 3, be provided with mist eliminator 21 near top exit end 4 side.Mist eliminator 21 can reduce carrying of export gas liquid.
embodiment 6:
On the basis of embodiment 3, the port of export, the safe pipeline 19 of described entrance point 2, top exit end 4, first discharge opeing block valve 12 are equipped with 8 word blind plates with the junction of gas-liquid separator 3, and skid-mounted device connector all adopts Flange joint, facilitate this large collecting well group natural gas to produce and be separated skid-mounted unit stop production to overhaul, conveniently carry out physical isolation.
embodiment 7:
On the basis of embodiment 1, described safe pipeline 19, blow-down pipe 20, blowdown pipeline 14 are installed on sledge seat 18.Convenient mobile, floor space is little, is suitable for the exploitation needs in gas field.
embodiment 8:
On the basis of embodiment 1, in order to ensure separator, described gas-liquid separator 3 adopts horizontal type gas and liquid separator.
This production based on large collecting well group natural gas provided by the invention is separated skid-mounted unit, integrated natural gas vent and automatic drain, separation equipment and natural gas vent and automatic drain and auxiliary line are all integrated on a sledge seat, convenient mobile and installation, adapt to the large well group rolling development of low permeability gas field, reduce low permeability gas field development cost.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.The parts that the present embodiment does not describe in detail and structure belong to the well-known components of the industry and common structure or conventional means, do not describe one by one here.
Claims (8)
1. produce separation skid-mounted unit based on large collecting well group natural gas for one kind, it is characterized in that: comprise gas-liquid separator (3), the entrance point (2) of gas-liquid separator (3) is connected with import block valve (1), top exit end (4) is connected with outlet block valve (5), and outlet at bottom end (6) is connected with tapping line (8);
Tapping line (8) is provided with the first discharge opeing block valve (12), discharge opeing control valve (15), the second discharge opeing block valve (16), first discharge opeing block valve (12) is located near outlet at bottom end (6) side, and discharge opeing control valve (15) is located between the first discharge opeing block valve (12) and the second discharge opeing block valve (16);
A fluid level transmitter (7) is at least provided with in described gas-liquid separator (3);
Described gas-liquid separator (3), import block valve (1), outlet block valve (5), tapping line (8) are installed on sledge seat (18).
2. a kind of production based on large collecting well group natural gas as claimed in claim 1 is separated skid-mounted unit, it is characterized in that: the top of described gas-liquid separator (3) is connected with safe pipeline (19), safe pipeline (19) is provided with safety valve (11), blow-down pipe (20) is connected with between the arrival end of safety valve (11) and the port of export, blow-down pipe (20) is provided with emptying block valve (9) and emptying flow control valve (10), and emptying block valve (9) is located at the arrival end side near safety valve (11).
3. a kind of production based on large collecting well group natural gas as claimed in claim 1 or 2 is separated skid-mounted unit, it is characterized in that: the port of export of described second discharge opeing block valve (16) is provided with restriction orifice (17).
4. a kind of production based on large collecting well group natural gas as claimed in claim 1 is separated skid-mounted unit, it is characterized in that: the bottom of described gas-liquid separator (3) is connected with blowdown pipeline (14), and blowdown pipeline (14) is provided with blowoff valve (13).
5. a kind of production based on large collecting well group natural gas as claimed in claim 1 is separated skid-mounted unit, it is characterized in that: in gas-liquid separator (3), be provided with mist eliminator (21) near top exit end (4) side.
6. a kind of production based on large collecting well group natural gas as claimed in claim 3 is separated skid-mounted unit, it is characterized in that: the port of export, the safe pipeline (19) of described entrance point (2), top exit end (4), the first discharge opeing block valve (12) are equipped with 8 word blind plates with the junction of gas-liquid separator (3).
7. a kind of production based on large collecting well group natural gas as claimed in claim 1 is separated skid-mounted unit, it is characterized in that: described safe pipeline (19), blow-down pipe (20), blowdown pipeline (14) are installed on sledge seat (18).
8. a kind of production based on large collecting well group natural gas as claimed in claim 1 is separated skid-mounted unit, it is characterized in that: described gas-liquid separator (3) adopts horizontal type gas and liquid separator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510372398.6A CN104929610A (en) | 2015-06-30 | 2015-06-30 | Natural gas production and separation skid-mounted unit based on large cluster well group |
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| CN201510372398.6A CN104929610A (en) | 2015-06-30 | 2015-06-30 | Natural gas production and separation skid-mounted unit based on large cluster well group |
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| CN201510372398.6A Pending CN104929610A (en) | 2015-06-30 | 2015-06-30 | Natural gas production and separation skid-mounted unit based on large cluster well group |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761656A (en) * | 2017-02-28 | 2017-05-31 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of separator |
| CN106894805A (en) * | 2017-02-27 | 2017-06-27 | 西安长庆科技工程有限责任公司 | A kind of coal bed gas gas gathering station enters the station separation skid-mounted unit |
| 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 |
| CN106968663A (en) * | 2017-04-29 | 2017-07-21 | 西安长庆科技工程有限责任公司 | A kind of metering separation skid-mounted unit that function is allocated with tolerance |
| CN107130954A (en) * | 2017-04-29 | 2017-09-05 | 西安长庆科技工程有限责任公司 | A kind of two-phase precipitation skid-mounted unit |
| CN109652154A (en) * | 2019-01-15 | 2019-04-19 | 西安长庆科技工程有限责任公司 | A kind of prying gas deoiling, dewatering integrated device and method |
| CN110130868A (en) * | 2019-05-20 | 2019-08-16 | 中国石油工程建设有限公司 | A kind of shale gas desanding separation system and method |
| CN111747369A (en) * | 2020-07-06 | 2020-10-09 | 中国石油天然气集团公司 | Unpowered automatic loading method and device for oil well produced liquid |
| CN112065356A (en) * | 2020-09-04 | 2020-12-11 | 西安长庆科技工程有限责任公司 | Separator-based small-differential-pressure large-liquid-volume liquid drainage system and method |
| CN112096364A (en) * | 2020-09-04 | 2020-12-18 | 西安长庆科技工程有限责任公司 | Module structure of gas field booster station separator and separation method |
| CN112922579A (en) * | 2019-11-20 | 2021-06-08 | 安瑞科(廊坊)能源装备集成有限公司 | Separation system |
| CN115492565A (en) * | 2022-09-20 | 2022-12-20 | 中石化石油工程技术服务有限公司 | Gas-liquid separation system for shale gas |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894805A (en) * | 2017-02-27 | 2017-06-27 | 西安长庆科技工程有限责任公司 | A kind of coal bed gas gas gathering station enters the station separation skid-mounted unit |
| CN106761656A (en) * | 2017-02-28 | 2017-05-31 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of separator |
| CN107130954B (en) * | 2017-04-29 | 2022-12-20 | 西安长庆科技工程有限责任公司 | Two-phase separation measurement skid-mounted device |
| 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 |
| CN106968663A (en) * | 2017-04-29 | 2017-07-21 | 西安长庆科技工程有限责任公司 | A kind of metering separation skid-mounted unit that function is allocated with tolerance |
| CN107130954A (en) * | 2017-04-29 | 2017-09-05 | 西安长庆科技工程有限责任公司 | A kind of two-phase precipitation skid-mounted unit |
| CN109652154A (en) * | 2019-01-15 | 2019-04-19 | 西安长庆科技工程有限责任公司 | A kind of prying gas deoiling, dewatering integrated device and method |
| CN109652154B (en) * | 2019-01-15 | 2024-08-02 | 西安长庆科技工程有限责任公司 | Skid-mounted type integrated device and method for deoiling and dewatering natural gas |
| CN110130868A (en) * | 2019-05-20 | 2019-08-16 | 中国石油工程建设有限公司 | A kind of shale gas desanding separation system and method |
| CN112922579A (en) * | 2019-11-20 | 2021-06-08 | 安瑞科(廊坊)能源装备集成有限公司 | Separation system |
| CN111747369A (en) * | 2020-07-06 | 2020-10-09 | 中国石油天然气集团公司 | Unpowered automatic loading method and device for oil well produced liquid |
| CN112096364A (en) * | 2020-09-04 | 2020-12-18 | 西安长庆科技工程有限责任公司 | Module structure of gas field booster station separator and separation method |
| CN112065356A (en) * | 2020-09-04 | 2020-12-11 | 西安长庆科技工程有限责任公司 | Separator-based small-differential-pressure large-liquid-volume liquid drainage system and method |
| CN112065356B (en) * | 2020-09-04 | 2023-10-20 | 西安长庆科技工程有限责任公司 | Small-differential-pressure large-liquid-amount liquid drainage system and method based on separator |
| CN115492565A (en) * | 2022-09-20 | 2022-12-20 | 中石化石油工程技术服务有限公司 | Gas-liquid separation system for shale gas |
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Application publication date: 20150923 |