CN108316893A - Controllable type slug flow generating apparatus - Google Patents
Controllable type slug flow generating apparatus Download PDFInfo
- Publication number
- CN108316893A CN108316893A CN201810210714.3A CN201810210714A CN108316893A CN 108316893 A CN108316893 A CN 108316893A CN 201810210714 A CN201810210714 A CN 201810210714A CN 108316893 A CN108316893 A CN 108316893A
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- Prior art keywords
- slug
- quick response
- liquid
- gas
- flow
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Classifications
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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
-
- 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
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Abstract
The present invention relates to a kind of controllable type slug flow generating apparatus, including slug generator and console, slug generator includes the gas phase channel being connected between gas phase entrance and slug outlet and gas-liquid hybrid channel, and gas phase channel includes the first slug chamber and the first quick response valve with the feedback of signal in place successively；Gas-liquid mixed channel includes quick response valve and fourth quick response valve in place signal feedback of the second quick response valve, air and liquid mixer, the second slug chamber, third parallel with one another fed back with signal in place with the feedback of signal in place successively, carries the gas that the quick response valve that signal is fed back in place flows out from second and the liquid flowed into from liquid phase entrance mixes in air and liquid mixer；It is respectively arranged with flow control valve in gas phase entrance and liquid phase inlet；In console under the control of each quick response valve and flow control valve, forming slug flow.The present invention can simulate the slug flow generating apparatus of actual field operating mode.
Description
Technical field
The present invention relates to a kind of controllable type slug flow generating apparatus.
Background technology
Wet gas is that gas phase is continuous phase, and liquid phase is the biphase gas and liquid flow of discrete phase.Gas phase carries liquid phase in the duct
Flowing.In the industrial process such as natural gas acquisition, conveying, the liquid mediums such as condensate and water flooding are often accompanied by pipeline.For
Conventional high-pressure gas field, in well head output object in the life cycle of gas well exploitation, down-hole pressure continuously decreases, gas carrying capacity
It is deteriorated, slug flow is readily formed in well head gas generation process.Offshore platform is in recovery process due to the presence of undersea standpipe
Serious slug flow can be formed.Fluctuating due to topography in the transmission process of natural gas also results in slug flow.
The generation of slug flow can cause the production of well head and conveying equipment to seriously endanger or even cause not expected
Safety accident is mainly manifested in：(1) gas producing technology flow is influenced.The appearance of slug flow easily causes live separator high
Pressure or high liquid level warning, make separative efficiency reduce；Serious slug flow even can make separator overflow so as to cause liquid phase
Flow directly into gas circuit；(2) to the influence of transport system mixing pump.Using gas-liquid delivery in many occasions, due to frequently producing
The mixing pump long-term work that raw slug flow can make will cause engagement screws to overheat in alternate load state, the dry overlong time that turns,
Reduce the service life and working efficiency of mixing pump；(3) to the influence of seal member.Gas-liquid two-phase mixes defeated flowing and is different from merely
Gas-phase transport or liquid phase conveying, some particular/special requirements can be proposed to sealing element, the shock loading caused by slug flow is into one
Step is degrading the operating condition of these components, not only influences the service life of sealing element, but also can cause to seal permanent failure, sealing fluid
Leakage rate increases, and being such as unable to timely processing even can cause safety accident；(4) appearance of slug flow can also cause mixing pump and attached
The vibration for belonging to pipeline, instrument and meter, to influence the normal operation of equipment；(5) to the influence of metering accuracy.Due to slug flow
Presence the flowing in pipeline can be made extremely unstable, for multi-phase flowmeter in this case can not ensure measure essence
Degree；It can not ensure that separation totally measures existing deviation so as to cause the single-phase flowmeter mounted on downstream for separator,
And then the clearing that affect trade.
Have some corporate facilities research slug flow measurement, capture and slug flow both at home and abroad at present to occur.It is produced using device
The mechanism of raw slug flow is to flow to be formed or the generation of artificially generated terrain liquid plug, the duct length needed tens arrive easily based on nature
Upper km.If the SINTEF test track yard piping overall lengths of Norway are up to 1000 meters, wherein 400 meters of a pipe level pipe range,
VERTICAL TUBE is 52 meters high[1]；420 meters of the TUFFP proving rings Taoist priest of Tulsa universities of the U.S.[1]；The WASP of Britain's Imperial College of Science and Technology is tried
It tests circuit and grows 36 meters[1]；Chinese Academy of Sciences's mechanics 40 meters of proving ring Taoist priest[1]；The developmental tube Taoist priest 340 of China University Of Petroleum Beijing
Rice[1]；50 meters of the developmental tube Taoist priest of French Petroleum Institute[2]；It is referred in patent No. CN2311758Y a kind of using multiple small
The principle of type gas-liquid separator timesharing gating simulates the formation of slug flow[3], this design method, which is also mentioned, in patent is suitable for
The flowing of VERTICAL TUBE is not particularly suited for horizontal tube；China University Of Petroleum Beijing has carried out artificial section also with the principle of single separator
The design of plug flow[4], have one section of process climbed vertically that gas phase is required to have certain fluid-carrying capability i.e. gas phase flow velocity before separator
Cannot be too small, while the formation of liquid plug is voluntarily to flow down that liquid plug is caused to be not controllable by the gravity of liquid phase.By
Naturally the slug flow device gas phase flow velocity that flowing is formed is generally in 4m/s hereinafter, can not just form slug when gas phase flow velocity is excessively high
Stream；The device of slug flow is formed by orographic factor can reach larger gas phase flow velocity, but such device not only need it is longer
Straight pipe and also need the standpipe of certain altitude, and liquid phase clogging is easy to happen when gas phase flow velocity is smaller.To sum up, base
It is used to simulate the operating mode of live complexity, the elimination so as to cause lab design or metering section in the experimental provision being typically designed
The equipment of plug flow, which is installed in live pipeline, is unable to reach expected requirement.
Bibliography：
[1] Chen Zhenyu, what favorable to the people Development in Experimental Study on Slug Flow [J] Oil ＆ Gas Storage, 2000,19 (12):32-38.
[2]Vilagines R,Hall A R W.Comparative behaviour of multiphase
flowmeter test facilities[J].Oil&Gas Science&Technology,2006,58(58):647-657.
[3] Dou Jian texts slugs generating means and the oil and gas water three-phase flow measuring device using the device:China,
CN2311758Y[P].1999-03-24.
[4] devoted, what favorable to the people has a down dip pipeline section plug flow the research of Slug velocities characteristic [J] chemical engineerings, 2016,44 (9):
44-48.
Invention content
In view of the above-mentioned problems, a kind of the object of the present invention is to provide floor spaces small, construction is simple, it is controllable, can simulate
The slug flow generating apparatus of actual field operating mode.Technical scheme is as follows：
A kind of controllable type slug flow generating apparatus, including slug generator and console, the slug generator include
The gas phase channel being connected between gas phase entrance and slug outlet and gas-liquid hybrid channel, gas phase channel include the first slug chamber successively
Room and the first quick response valve with the feedback of signal in place；Gas-liquid mixed channel includes second anti-with signal in place successively
The quick response valve of feedback, air and liquid mixer, the second slug chamber, third parallel with one another are quick with the feedback of signal in place
Valve and the 4th quick response valve with the feedback of signal in place are responded, the quick response fed back from second with signal in place
The gas of valve outflow and the liquid flowed into from liquid phase entrance are mixed in air and liquid mixer；In console to each quick response valve
Under the control of door and flow control valve, slug flow is formed.
The length and bore of two slug chambers allow hand over.It should distinguish in gas phase entrance and liquid phase inlet
It is provided with flow control valve；It is preferably provided with the first transparent window in slug exit, the is provided with after the second slug chamber
Two transparent windows.
The actual condition feature of present invention combination oil gas well site and conveying and design, be applicable not only to newly-built two phase flow dress
It sets and is also suitable for existing two phase flow device progress local flow improvement.
Description of the drawings
Fig. 1 controllable type slug flow generating apparatus and its application scenarios schematic diagram.
Fig. 2 slug generator architecture schematic diagrames.
The design sketch that Fig. 3 slugs are formed, in figure, t1、t3What is indicated is the time of valve event, i.e., by standard-sized sheet to fully closed or
Person is fully closed to arrive standard-sized sheet.
The reference numerals are as follows：
1、6：The slug chamber that length and bore can switch
2、3、4、8：Quick response valve with the feedback of signal in place
5：Air and liquid mixer
7、9：Transparent window
10、11：Flow control valve
The telescopic joint that corresponding caliber can be chosen to install at slug chamber 1 and slug chamber 6, facilitates installation can also be to slug
Length is finely adjusted.Transparent window 7 and transparent window 9 can choose to install.
Specific implementation mode
Present disclosure is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the invention mainly comprises slug flow-generator and console two parts, rest part includes to match
Close the required standard scale of completion system allomeric function, wind turbine, water pump, gas-liquid separator etc..It is sent into gas by wind turbine, is passed through
Water pump is sent into liquid.Wherein slug flow-generator includes four quick response valves with the feedback of signal in place and various length
Degree and the different straight pipe of bore, for realizing the slug chamber of not co-content.The slug flow of generation is admitted to gas by pipeline
Liquid/gas separator.It is illustrated by taking the quick response valve fed back with signal in place as an example.
Steps are as follows in practical operation：
Four actions are defined first of all for being described below to facilitate, action A is defined as：Quick response valve 2,3,4,8 is all
It opens；Action B is defined as：Quick response valve 4,8 is opened, and quick response valve 2,3 is closed；Action C is defined as：Quick response
Valve 4,8 is closed, and quick response valve 2,3 is opened；Action D is defined as：2,3,4,8 Close All of quick response valve.
Actual condition example：Assuming that current working caliber D is 0.05m, gas phase inlet flow rate is 50m3/ h, quick response valve
The inside liquid storage space of gate valve body and air and liquid mixer equivalent length are 4D, that is, 0.2m, to obtain slug length 20D i.e. 1m, slug
Frequency 0.05Hz, experimental period 5min then need the parameter being arranged to be divided into two parts, and mechanical part is by the slug chamber in diagram
1 and slug chamber 6 tube coupling at be adjusted to 16D i.e. 0.8m, the make-and-break time interval of quick response valve is set as 20s, liquid phase
Inlet flow rate is set as 0.353m3/ h, experimental period are set as 5min.
Step 1：It recycles execution by console and acts A and act D and amount to 3 times, confirm quick response valve signal in place
It is whether normal；
Step 2：The flow of liquid phase entrance is set as 0.353m3The flow of/h, gas phase entrance are 50m3/h；
Step 3：Action C is first carried out, after to be controlled is timed to 20s, automatic execution acts B；To be controlled is timed to
After 40s, execution again acts C, so moves in circles until timing reaches 5min, execution at this time acts A；
Step 4：After the completion of setting, console executes timing, switching, data acquisition session automatically, and operating personnel can be saturating
The effect that viewing section plug is formed at photopic vision window 7,9；
Step 5：If occurring in experimentation, superpressure, the safety accidents such as transfinite or block, and console understands automatic alarm simultaneously
Hard stop.If quick response valve 2,3 and quick response valve 4,8 cannot simultaneously close off, control mode is using interlocking.Control
Platform can first inquire the signal condition in place of each quick response valve when changing the state of quick response valve, if it has inquired
Current quick response valve 4,8 is in the open state, and quick response valve 2,3 is closed, and console will carry out at this time
Open quick response valve 2,3 in next step and close the action of quick response valve 4,8, but open quick response valve 2,
3 order does not receive corresponding signal in place after executing so console can maintain quick response valve 4,8 current at this time
State jumps to open alarming device prompt operating personnel's quick response failsafe valve simultaneously.
In above-mentioned steps 3, after having executed action C, slug chamber 6 starts filling liquid, and gas phase passes through 1 He of slug chamber at this time
Quick response valve 2 enter transparent window 9, be at this time pure gaseity in transparent window 9, and liquid phase by air and liquid mixer 5 into
Enter slug chamber 6, the execution action B after being timed to, the closing of quick response valve 2,3 at this time, the opening of quick response valve 4,8,
Gas phase can only flow to downstream by quick response valve 4 and air and liquid mixer 5, at the same push full packages liquid in slug chamber 6 to
Downstream flow just sees the state of full packages liquid in transparent window 9 at this time, and so on to form slug flow.
The invention adopts the above technical scheme, which has the following advantages：
(1) in terms of device volume, the length of straight pipe or the height of standpipe are all wanted without hardness in the present invention
It asks, it is compact to design, to keep device the space occupied small as possible；
(2) the slug length and volume that device generates are controllable, adjustable, and can automatically switch；
(3) slug frequency and length that device generates are controllable, and calculating slug body according to the frequency of setting forms needs
Time calculates required flow according to the length of slug body, caliber and time, can carry out flow tune by console
Section；
(4) device construction is simple both can be directly transformed on existing two phase flow device, save cost, and can be
It is added on newly-designed device；
(5) matched with devices has dedicated host computer operating system, operating personnel can be complete in console after installing pipeline
It is functional at institute, including booting test, parameter setting, the real functions such as fixed, data preservation of failing to be sold at auction.
According to above example, the slug flow design sketch finally obtained is as shown in Figure 3.
Claims (4)
1. a kind of controllable type slug flow generating apparatus, including slug generator and console, the slug generator includes connecing
Gas phase channel between gas phase entrance and slug outlet and gas-liquid hybrid channel, which is characterized in that gas phase channel includes successively
First slug chamber and the first quick response valve with the feedback of signal in place；Gas-liquid mixed channel is carried including second successively
The quick response valve, air and liquid mixer, the second slug chamber of signal feedback, third parallel with one another are with signal in place in place
The quick response valve of feedback and the 4th quick response valve with the feedback of signal in place, feed back from second with signal in place
Quick response valve outflow gas and from liquid phase entrance flow into liquid air and liquid mixer mix；In console to each
Under the control of quick response valve and flow control valve, slug flow is formed.
2. controllable type slug flow generating apparatus according to claim 1, which is characterized in that two slug chambers
Length and bore allow hand over.
3. controllable type slug flow generating apparatus according to claim 1, which is characterized in that in gas phase entrance and liquid phase entrance
Place is respectively arranged with flow control valve.
4. controllable type slug flow generating apparatus according to claim 1, which is characterized in that slug exit is provided with
One transparent window, the second slug chamber are provided with the second transparent window later.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810210714.3A CN108316893B (en) | 2018-03-14 | 2018-03-14 | Controllable section plug flow generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810210714.3A CN108316893B (en) | 2018-03-14 | 2018-03-14 | Controllable section plug flow generating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108316893A true CN108316893A (en) | 2018-07-24 |
| CN108316893B CN108316893B (en) | 2023-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810210714.3A Active CN108316893B (en) | 2018-03-14 | 2018-03-14 | Controllable section plug flow generating device |
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| Country | Link |
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| CN (1) | CN108316893B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577928A (en) * | 2019-01-03 | 2019-04-05 | 西安长庆科技工程有限责任公司 | A kind of gas-liquid two-phase injection well head device and method |
| CN110823513A (en) * | 2019-11-22 | 2020-02-21 | 天津大学 | Intelligent slug and pseudo-slug generating device and method |
| CN113368725A (en) * | 2021-06-04 | 2021-09-10 | 中国石油化工集团有限公司 | Pipeline fluid flow state generating device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9222782D0 (en) * | 1992-10-30 | 1992-12-09 | British Petroleum Co | Apparatus and method for generating slug flow |
| CN2311758Y (en) * | 1997-11-07 | 1999-03-24 | 窦剑文 | Segment plug generator and oil, gas and liquid three-phase flow measuring unit using the same |
| CN107339612A (en) * | 2017-07-05 | 2017-11-10 | 中国石油大学(华东) | Measured length constant speed degree liquid plug generating means in a kind of pipeline |
| CN207944918U (en) * | 2018-03-14 | 2018-10-09 | 天津大学 | Controllable type slug flow generating apparatus |
-
2018
- 2018-03-14 CN CN201810210714.3A patent/CN108316893B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9222782D0 (en) * | 1992-10-30 | 1992-12-09 | British Petroleum Co | Apparatus and method for generating slug flow |
| CN2311758Y (en) * | 1997-11-07 | 1999-03-24 | 窦剑文 | Segment plug generator and oil, gas and liquid three-phase flow measuring unit using the same |
| CN107339612A (en) * | 2017-07-05 | 2017-11-10 | 中国石油大学(华东) | Measured length constant speed degree liquid plug generating means in a kind of pipeline |
| CN207944918U (en) * | 2018-03-14 | 2018-10-09 | 天津大学 | Controllable type slug flow generating apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577928A (en) * | 2019-01-03 | 2019-04-05 | 西安长庆科技工程有限责任公司 | A kind of gas-liquid two-phase injection well head device and method |
| CN110823513A (en) * | 2019-11-22 | 2020-02-21 | 天津大学 | Intelligent slug and pseudo-slug generating device and method |
| CN113368725A (en) * | 2021-06-04 | 2021-09-10 | 中国石油化工集团有限公司 | Pipeline fluid flow state generating device and method |
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| Publication number | Publication date |
|---|---|
| CN108316893B (en) | 2023-02-24 |
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