CN104763403B - A kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir - Google Patents
A kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir Download PDFInfo
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- CN104763403B CN104763403B CN201510135236.0A CN201510135236A CN104763403B CN 104763403 B CN104763403 B CN 104763403B CN 201510135236 A CN201510135236 A CN 201510135236A CN 104763403 B CN104763403 B CN 104763403B
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- low pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
Abstract
The invention provides a kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir, including admission line and gas-liquid separator, the admission line is provided with the block valve that enters the station, the port of export of the block valve that enters the station is communicated with high-low pressure process switching valve group, the high-pressure process control valve and low pressure process control valve group that high-low pressure process switching valve group is connected side by side by the port of export with the block valve that enters the station into.The present invention can meet the natural gas gas-liquid separation requirement under the different modes of production such as whole high pressure productions, high-low pressure mixture manufacturing, whole low pressure productions simultaneously.
Description
Technical field
The invention belongs to gas-liquid separation technical field, and in particular to a kind of ground high-low pressure that gas production field is closed based on multi-reservoir
Gas-liquid mixture piece-rate system.
Background technology
During gas field development, exploitation dealer often uses different exploitation sides according to the difference of gas reservoir pressure characteristic
Formula, and different development schemes determines the different pressure system of surface gathering and transferring.Some gas fields are due to using many series of strata exploitation sides
Formula, different series of strata have different gas reservoir evaluation and development scheme, so, the pressure system of surface gathering and transferring often not only a set of.
In order to quickly withdraw development cost, maximizing the benefits is realized, gas reservoir pressure decline speed slow gas high for yield
Well is often using high pressure at initial stage, the mode of production of later stage low pressure；And it is relatively low for yield, the fast gas well of gas reservoir decline of pressure then leads to
Chang Yizhi maintains the low pressure mode of production.Therefore, gas gathering station may be simultaneously present in high and low pressure two inside the gas field of many series of strata exploitations
Unstripped gas, and due to connecing the difference of well order, same seat gas gathering station is likely to occur whole high pressure productions, whole low pressure productions, height
The situation that low pressure is produced simultaneously.In order to meet the natural gas separation requirement under different operating pressures, generally required in gas gathering station
The gas-liquid separator of different designs pressure is set.High pressure production phase, gas gathering station need to set high-pressure separator to realize dividing for gas-liquid
From, and be the need for meeting low pressure production, to generally require to set low pressure separator in addition, it is so, whole when the gas field development later stage
Be transferred to low pressure production when, stand in high-pressure separator will largely leave unused, cause the waste of equipment, the increase of engineering cost.
The content of the invention
It is an object of the invention to provide a kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir,
The natural gas gas under the different modes of production such as whole high pressure productions, high-low pressure mixture manufacturing, whole low pressure productions can be met simultaneously
Liquid separation requirement.
Therefore, the invention provides a kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir,
Including admission line and gas-liquid separator, the admission line is provided with enter the station block valve, the port of export of the block valve that enters the station
High-low pressure process switching valve group is communicated with, the high-low pressure process switching valve group is connected side by side by the port of export with the block valve that enters the station
High-pressure process control valve and low pressure process control valve group into；
The high-pressure process control valve is connected by high pressure remittance tracheae before separation with the entrance point of gas-liquid separator, described point
Tracheae is converged provided with separator import high-pressure process control valve from preceding high pressure, and the gaseous phase outlet end of the gas-liquid separator is communicated with
High pressure remittance tracheae after separation, high pressure converges tracheae provided with separator outlet high-pressure process control valve, the gas-liquid point after the separation
From device liquid-phase outlet end be communicated with separation after converge liquid pipe；
The low pressure process control valve is connected by low pressure remittance tracheae before separation with the entrance point of gas-liquid separator, described point
Tracheae is converged provided with separator import low pressure process control valve from preceding low pressure, and the gaseous phase outlet end of the gas-liquid separator is communicated with
Low pressure remittance tracheae after separation, low pressure converges tracheae provided with separator outlet low pressure process control valve after the separation.
The high pressure remittance tracheae port of export is connected with flowmeter after the separation.
The low pressure remittance tracheae port of export is connected with natural gas compressor after the separation, the natural gas compressor port of export and stream
Gauge is connected.
After the separation separator discharge opeing block valve and separator discharge opeing regulating valve 19 are sequentially provided with remittance liquid pipe.
Liquid pipe of being converged after the separation is communicated with fluid reservoir.
The beneficial effects of the invention are as follows：The present invention can meet simultaneously whole high pressure productions, high-low pressure mixture manufacturing, all it is low
Natural gas gas-liquid separation requirement under the different modes of production such as pressure production.
It is described in further details below in conjunction with accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is high-low pressure process switching valve group structural representation；
Fig. 3 is structure of gas liquid separator schematic diagram.
In figure：1st, enter the station block valve；2nd, high-low pressure process switching valve group；3rd, high pressure remittance tracheae before separating；4th, it is low before separating
Pressure remittance tracheae；5th, gas-liquid separator；6th, high pressure remittance tracheae after separating；7th, low pressure remittance tracheae after separating；8th, flowmeter；9th, natural gas
Compressor；10th, liquid pipe is converged after separating；11st, fluid reservoir；12nd, high-pressure process control valve；13rd, low pressure process control valve；14th, separate
Device import high-pressure process control valve；15th, separator import low pressure process control valve；16th, separator outlet high-pressure process control valve；
17th, separator outlet low pressure process control valve；18th, separator discharge opeing block valve；19th, separator discharge opeing regulating valve.
Embodiment
Embodiment 1：
A kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir is present embodiments provided, including
Admission line and gas-liquid separator 5, the admission line is provided with enter the station block valve 11, the port of export of the block valve 11 that enters the station
High-low pressure process switching valve group 2 is communicated with, the high-low pressure process switches valve group 2 by arranged side by side with the port of export for the block valve 11 that enters the station
The high-pressure process control valve 12 and low pressure process control valve 13 of connection are constituted；
The high-pressure process control valve 12 is connected by high pressure remittance tracheae 3 before separation with the entrance point of gas-liquid separator 5, institute
State high pressure before separation and converge tracheae 3 provided with separator import high-pressure process control valve 14, the gaseous phase outlet of the gas-liquid separator 5
End is communicated with high pressure remittance tracheae 6 after separation, and high pressure converges tracheae 6 provided with separator outlet high-pressure process control valve after the separation
16, the liquid-phase outlet end of the gas-liquid separator 5 is communicated with remittance liquid pipe 10 after separation；
The low pressure process control valve 13 is connected by low pressure remittance tracheae 4 before separation with the entrance point of gas-liquid separator 5, institute
State low pressure before separation and converge tracheae 4 provided with separator import low pressure process control valve 15, the gaseous phase outlet of the gas-liquid separator 5
End is communicated with low pressure remittance tracheae 7 after separation, and low pressure converges tracheae 7 provided with separator outlet low pressure process control valve after the separation
17。
In the present embodiment, when high pressure is produced, high-pressure natural gas is entered the station block valve 11 by admission line, is entered the station and is blocked
Valve 11 can realize that every road is entered the station pipeline independence turn-off function, and high-low pressure process is entered afterwards and switches valve group 2, as shown in Fig. 2 high pressure
Flow control valves 12 are connected, and low pressure process control valve 13 is closed, and high-pressure natural gas will all import high pressure remittance tracheae 3 before separation,
Enter gas-liquid separator 5 afterwards；The separator import high-pressure process control valve 14 of the entrance point of gas-liquid separator 5 is connected, separator
Import low pressure process control valve 15 is closed, and the separator outlet high-pressure process control valve 16 at gaseous phase outlet end is connected, and separator goes out
Mouth low pressure process control valve 17 closes natural gas after gas-liquid separation, and gas phase passes through separator outlet high-pressure process control valve 16
High pressure remittance tracheae 6, is finally exported after into separation；Liquid phase enters remittance liquid pipe 10 after separation after separation and discharged.
When low pressure is produced, low pressure natural gas is entered the station block valve 11 by admission line, afterwards into high-low pressure process
Switch valve group 2, as shown in Fig. 2 high-pressure process control valve 12 is closed, low pressure process control valve 13 is connected, low pressure natural gas will be complete
Portion imports low pressure remittance tracheae 4 before separation, afterwards into gas-liquid separator 5；The separator import high pressure of the entrance point of gas-liquid separator 5
Flow control valves 14 are closed, and separator import low pressure process control valve 15 is connected, the separator outlet high-pressure spray at gaseous phase outlet end
Process control valve 16 is closed, and separator outlet low pressure process control valve 17 is connected, and natural gas is after gas-liquid separation, and gas phase is by dividing
Enter low pressure remittance tracheae 7 after separation from device outlet low pressure process control valve 17, finally export；Natural gas compressor 9 increases pressure
Enter the flowmeter 8 in downstream after to high-pressure horizontal, liquid phase enters remittance liquid pipe 10 after separation after separation and discharged.
, can be same by setting many set systems to be realized by the above method while there are two kinds of production status of high-low pressure in such as standing
Shi Yunhang.
The present embodiment can meet the different productions such as whole high pressure productions, high-low pressure mixture manufacturing, whole low pressure productions simultaneously
Natural gas gas-liquid separation requirement under mode.
Embodiment 2：
On the basis of embodiment 1, the high pressure remittance port of export of tracheae 6 is connected with flowmeter 8 after separation；Low pressure remittance gas after separation
The port of export of pipe 7 is connected with natural gas compressor 9, and the port of export of natural gas compressor 9 is connected with flowmeter 8.
Flowmeter 8 can meet low pressure remittance tracheae 7 port of export connection after natural gas flow measuring demand, separation in the present embodiment
Natural gas compressor 9 low pressure natural gas can be increased to be connected to after high-pressure horizontal, supercharging flowmeter 8 carry out flow measurement.
Embodiment 3：
Present embodiments provide a kind of ground high-low pressure gas-liquid mixture point that gas production field is closed based on multi-reservoir as shown in Figure 1
From system, the present embodiment is set up in parallel multigroup gas-liquid mixture piece-rate system, to meet different demands simultaneously.
Entered the station block valve 11 as shown in figure 1, the natural gas that enters the station first passes through admission line, enter the station block valve 11 and height
Press flow switching valve group 2 entrance point connection, the high-pressure process control valve 12 and lowpressure stream of the high-low pressure process switching port of export of valve group 2
Process control valve 13 respectively with separate before high pressure converge tracheae 3 and low pressure is converged tracheae 4 and connected before separating, before separation high pressure converge tracheae 3 and
Low pressure remittance tracheae 4 is connected into the separator import high-pressure process control valve 14 of the entrance point of gas-liquid separator 5 and divided respectively again before separation
From device import low pressure process control valve 15, the He of separator outlet high-pressure process control valve 16 at the gaseous phase outlet end of gas-liquid separator 5
Separator outlet low pressure process control valve 17 is connected with separating rear high pressure remittance tracheae 6 and separating rear low pressure remittance tracheae 7 respectively again,
High pressure remittance tracheae 6 is connected with flowmeter 8 after separation, and low pressure remittance tracheae 7 is connected with the entrance point of natural gas compressor 9 after separation,
The port of export of natural gas compressor 9 is connected into flowmeter 8 again, and separator discharge opeing block valve 18 is passed through at the liquid-phase outlet end of gas-liquid separator 5
Be connected into respectively after separator discharge opeing regulating valve 19 separation after converge liquid pipe 10, after separation converge liquid pipe 10 connected again with fluid reservoir 11.
When high pressure is produced, each road high-pressure natural gas first passes through the block valve 11 that enters the station, and the achievable pipeline that entered the station per road is independently closed
Disconnected function, enters high-low pressure process and switches valve group 2 afterwards, as shown in Fig. 2 high-pressure process control valve 12 is all turned on, lowpressure stream
The Close All of process control valve 13, natural gas will all import high pressure remittance tracheae 3 before separation, afterwards into gas-liquid separator 5, such as scheme
Shown in 3, the separator import high-pressure process control valve 14 of the entrance point of gas-liquid separator 5 is connected, and separator import lowpressure stream is program control
Valve 15 processed is closed, and the separator outlet high-pressure process control valve 16 at gaseous phase outlet end is connected, the control of separator outlet low pressure process
Valve 17 is closed, and natural gas is after gas-liquid separation, and the flowmeter 8 that gas phase enters downstream carries out flow measurement, and liquid phase is through separator
Remittance liquid pipe 10 after separation is imported after discharge opeing block valve 18 and separator discharge opeing regulating valve 19 respectively, is carried out afterwards into fluid reservoir 11
Processing and storage operation.
When low pressure is produced, each road low pressure natural gas first passes through the block valve 11 that enters the station, and the achievable pipeline that entered the station per road is independently closed
Disconnected function, enters high-low pressure process and switches valve group 2, as shown in Fig. 2 the Close All of high-pressure process control valve 12, lowpressure stream afterwards
Process control valve 13 is all turned on, and natural gas will all import low pressure remittance tracheae 4 before separation, afterwards into gas-liquid separator 5, such as scheme
Shown in 3, the separator import high-pressure process control valve 14 of the entrance point of gas-liquid separator 5 is closed, and separator import lowpressure stream is program control
Valve 15 processed is connected, and the separator outlet high-pressure process control valve 16 at gaseous phase outlet end is closed, the control of separator outlet low pressure process
Valve 17 is connected, natural gas after gas-liquid separation, gas phase increases to pressure into natural gas compressor 9 enter after high-pressure horizontal under
The flowmeter 8 of trip, liquid phase converges liquid after importing separation respectively after separator discharge opeing block valve 18 and separator discharge opeing regulating valve 19
Pipe 10, is handled and storage operation into fluid reservoir 11 afterwards.
While there are two kinds of production status of high-low pressure in such as standing, it can also be realized and run simultaneously by the above method.
In summary, instant invention overcomes the shortcoming of prior art, whole high pressure productions, high-low pressure mixing can be met simultaneously
Natural gas gas-liquid separation requirement under the different modes of production such as production, whole low pressure productions.
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 (3)
1. a kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir, including admission line and gas-liquid point
From device（5）, it is characterised in that：The admission line is provided with the block valve that enters the station（1）, the block valve that enters the station（1）The port of export
It is communicated with high-low pressure process switching valve group（2）, the high-low pressure process switching valve group（2）By with the block valve that enters the station（1）Outlet
Hold the high-pressure process control valve connected side by side（12）With low pressure process control valve（13）Composition；
The high-pressure process control valve（12）Pass through high pressure remittance tracheae before separation（3）With gas-liquid separator（5）Entrance point connection,
High pressure remittance tracheae before the separation（3）It is provided with separator import high-pressure process control valve（14）, the gas-liquid separator（5）'s
Gaseous phase outlet end is communicated with high pressure remittance tracheae after separation（6）, high pressure remittance tracheae after the separation（6）It is provided with separator outlet high pressure
Flow control valves（16）, the gas-liquid separator（5）Liquid-phase outlet end be communicated with separation after converge liquid pipe（10）；
The low pressure process control valve（13）Pass through low pressure remittance tracheae before separation（4）With gas-liquid separator（5）Entrance point connection,
Low pressure remittance tracheae before the separation（4）It is provided with separator import low pressure process control valve（15）, the gas-liquid separator（5）'s
Gaseous phase outlet end is communicated with low pressure remittance tracheae after separation（7）, low pressure remittance tracheae after the separation（7）It is provided with separator outlet low pressure
Flow control valves（17）；
High pressure remittance tracheae after the separation（6）The port of export is connected with flowmeter（8）；Converge liquid pipe after the separation（10）On set successively
There is separator discharge opeing block valve（18）With separator discharge opeing regulating valve（19）.
2. a kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir according to claim 1,
It is characterized in that：Low pressure remittance tracheae after the separation（7）The port of export is connected with natural gas compressor（9）, the natural gas compressor
（9）The port of export and flowmeter（8）Connection.
3. a kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir according to claim 1,
It is characterized in that：Converge liquid pipe after the separation（10）It is communicated with fluid reservoir（11）.
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| CN201510135236.0A CN104763403B (en) | 2015-03-26 | 2015-03-26 | A kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir |
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| CN201510135236.0A CN104763403B (en) | 2015-03-26 | 2015-03-26 | A kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir |
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| CN106837292B (en) * | 2017-03-24 | 2023-04-07 | 西安长庆科技工程有限责任公司 | Ground process treatment system and method for different treatment scales of multilayer station yard |
| CN109611071A (en) * | 2018-12-29 | 2019-04-12 | 西安长庆科技工程有限责任公司 | A kind of mesolow gas-liquid separation device and method suitable for multi-state |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5211842A (en) * | 1992-01-07 | 1993-05-18 | Conoco Inc. | Three-phase well test apparatus using pumped recirculation to maintain homogenous flow |
| CN201672252U (en) * | 2010-04-16 | 2010-12-15 | 中国石油天然气股份有限公司 | Emptied natural gas injection recovery device for gas gathering station |
| CN201671606U (en) * | 2010-04-16 | 2010-12-15 | 中国石油天然气股份有限公司 | Secondary pressurizing gas production device by aid of jet apparatus and compressor |
| CN103912253A (en) * | 2014-03-20 | 2014-07-09 | 西安长庆科技工程有限责任公司 | Gas well single well gas recovery system and low-pressure recovery method thereof |
| CN203796236U (en) * | 2014-03-26 | 2014-08-27 | 中国海洋石油总公司 | Low-pressure natural gas recovery system of offshore gas field |
| CN204677184U (en) * | 2015-03-26 | 2015-09-30 | 西安长庆科技工程有限责任公司 | A kind of ground high-low pressure gas-liquid mixture piece-rate system of closing gas production field based on many reservoirs |
-
2015
- 2015-03-26 CN CN201510135236.0A patent/CN104763403B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5211842A (en) * | 1992-01-07 | 1993-05-18 | Conoco Inc. | Three-phase well test apparatus using pumped recirculation to maintain homogenous flow |
| CN201672252U (en) * | 2010-04-16 | 2010-12-15 | 中国石油天然气股份有限公司 | Emptied natural gas injection recovery device for gas gathering station |
| CN201671606U (en) * | 2010-04-16 | 2010-12-15 | 中国石油天然气股份有限公司 | Secondary pressurizing gas production device by aid of jet apparatus and compressor |
| CN103912253A (en) * | 2014-03-20 | 2014-07-09 | 西安长庆科技工程有限责任公司 | Gas well single well gas recovery system and low-pressure recovery method thereof |
| CN203796236U (en) * | 2014-03-26 | 2014-08-27 | 中国海洋石油总公司 | Low-pressure natural gas recovery system of offshore gas field |
| CN204677184U (en) * | 2015-03-26 | 2015-09-30 | 西安长庆科技工程有限责任公司 | A kind of ground high-low pressure gas-liquid mixture piece-rate system of closing gas production field based on many reservoirs |
Non-Patent Citations (2)
| Title |
|---|
| 国内煤层气地面集输系统现状及简析;薛岗;《中国煤层气》;20111031;第8卷(第5期);第1.2节，图4-图5 * |
| 煤层气地面工程工艺设计及优化分析;刘烨;《石油规划设计》;20080731;第19卷(第4期);第34-37页 * |
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Inventor after: Liu Mingkun Inventor after: Li Pengjiang Inventor after: Yang Guang Inventor after: Wang Denghai Inventor after: Zheng Xin Inventor after: Liu Yinchun Inventor after: Fan Junlai Inventor after: Hu Tao Inventor after: Qiao Guanghui Inventor after: Li Qiang Inventor before: Liu Mingkun Inventor before: Li Pengjiang Inventor before: Yang Guang Inventor before: Wang Denghai Inventor before: Zheng Xin Inventor before: Liu Yinchun Inventor before: Fan Junlai Inventor before: Hu Tao Inventor before: Qiao Guanghui Inventor before: Li Qiang |
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