CN208721538U - A kind of crude oil pipe stream wax deposit characteristic test device - Google Patents
A kind of crude oil pipe stream wax deposit characteristic test device Download PDFInfo
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- CN208721538U CN208721538U CN201821513385.1U CN201821513385U CN208721538U CN 208721538 U CN208721538 U CN 208721538U CN 201821513385 U CN201821513385 U CN 201821513385U CN 208721538 U CN208721538 U CN 208721538U
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- ball valve
- circuit
- valve
- wax deposit
- crude oil
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Abstract
The utility model discloses a kind of crude oil pipe stream wax deposit characteristic test device, system uses open tank recovery experiment fluid, realizes the disposable flowing of crude oil in the duct, can pipe flow condition in truer simulation actual production process.Test section and reference section is arranged in device, while acquiring fluid-pressure drop data using differential pressure pick-up, to calculate wax deposit thickness.Sampling valve is respectively set in test section and reference section, the experiment sample of two flowing stages can be obtained.Detachable pipeline is respectively set in test section and reference section, measures wax deposit amount using weight method, experimental result is more accurate.Two methods are associated analysis, advantageously reduce experimental error, profound understanding wax deposit characteristic.Compared with existing crude oil pipe stream wax deposit characteristic test device, the utility model has the characteristics that disposably flowing, measurement are accurate, structure is detachable, experiment sample can be analyzed, experimental result association analysis, applied widely, high degree of automation.
Description
Technical field
The utility model belongs to multiphase pipe flow technical field, more particularly to a kind of test of crude oil pipe stream wax deposit characteristic
Device.
Background technique
In recent years, the exploitation of the yield and marine oil and gas that improve petroleum resources has become China and realizes energy sustainable development
The strategic emphasis of exhibition.With the exploitation of offshore petroleum resources and the continuous exploitation of seabed waxy crude oil, multiphase mixed transportation technology front
Face the wax deposit problem in a new problem Multiphase Flow.Contain the heavy hydrocarbon species such as more paraffin in deep-seated oil gas reservoir,
As environment temperature, pressure are greatly lowered in exploitation and transmission process, oil temperature is also decreased.When oil temperature is lower than critical analysis wax
After temperature, the solid matters such as wax will be made to be deposited, and be attached on the borehole wall and tube wall.Wax deposition limits the flowing of pipeline
Area causes production capacity to decline, and can lead to halt production when serious.It exploits with marine waxy crude oil to deep-sea and extends compared with cold water domain,
Wax deposition phenomenon is especially serious, and wax deposition once caused North Sea oil field a bite oil well to be scrapped completely.Every year worldwide because wax deposition is asked
The problem of topic will cause huge economic loss, and the wax content in crude oil of China's production is high, be brought due to wax deposit is tighter than external
Weight, the wax control spent, wax removal cost are also higher.Therefore, the wax deposition of research crude oil in the duct has important guiding
Meaning.
For the wax deposit characteristic for measuring crude oil flow, Huang Qiyu et al. propose a kind of wax deposition experimental device (Huang Qiyu,
Zhang Jingjun, Gao Xuefeng wait Study on wax deposition of Daqing crude oil [J] petroleum journal, 2006,27 (4): 125-129.).It utilizes
Crude oil is pumped into circuit by screw pump or peristaltic pump, passes through test section and the differential pressure pickup of reference section acquires the pressure of fluid flowing
Drop, to analyze wax deposit thickness.There are main problems to be for it, and system passes through ring using the circuit device circulated, crude oil
Road test flows back to oil tank after wax crystalline substance is precipitated, and is again introduced into circuit through pump driving to influence experiment accuracy, and and actual production
The operational process of pipeline is different.Meanwhile circuit can not obtain Experimental Flowing Object sample, can not analyze wax-crystal structure.Utilize pressure difference number
Belong to indirect gain experimental data according to wax deposit thickness is calculated, resultant error is larger.
Summary of the invention
In order to overcome the drawbacks of the prior art, the purpose of the utility model is to provide a kind of disposable flowing, measurements accurately,
Structure is detachable, experiment sample can be analyzed, the crude oil pipe stream wax deposit characteristic test device of experimental result association analysis.
The utility model uses open tank recovery experiment fluid, realizes the disposable flowing of crude oil in the duct, can be more
Pipe flow condition in true simulation actual production process.Test section and reference section is arranged in device, while utilizing differential pressure pick-up
Fluid-pressure drop data are acquired, to calculate wax deposit thickness.Sampling valve is respectively set in test section and reference section, two can be obtained
The experiment sample of flowing stage.Detachable pipeline is respectively set in test section and reference section, measures wax deposit amount using weight method, real
It is more accurate to test result.Two methods are associated analysis, advantageously reduce experimental error, profound understanding wax deposit characteristic.
The specific technical solution of the utility model is as follows:
A kind of crude oil pipe stream wax deposit characteristic test device, including three preparation system, circuit system and refrigeration system portions
Point, the preparation system is connected with circuit system, and refrigeration system is distributed in preparation system and circuit system；The preparation system
Including oil tank, blow valve and connecting line, for storing experiment oil or preparing water-oil emulsion；The circuit system includes ball
Valve one, centrifugal pump, mass flowmenter, circuit outer layer collet, ball valve two, ball valve three, ball valve four, the first differential pressure pick-up, ball valve
Five, sampling valve one, air bath, ball valve five, ball valve six, ball valve seven, the second differential pressure pick-up, ball valve eight, sampling valve two, ball valve
Nine, stand and connecting line, for testing the wax deposit characteristic of crude oil；Pipeline between the ball valve two, ball valve three is
Test section；Pipeline between the ball valve five, ball valve six is reference section；The refrigeration system includes the first water-bath, the second water
Bath and air bath；The oil tank outer layer is equipped with collet, is connected with the first water-bath, and temperature in oil tank is adjusted；The oil tank top
Equipped with blender, for stirring the fluid in oil tank；The oil tank lower part is connected with blow valve, is used for Emission test fluid；Institute
It states the second water-bath to be connected with circuit outer layer collet, for controlling the temperature being equipped in the circuit of outer layer collet；In the air bath
Equipped with ball valve five, ball valve six, ball valve seven, the second differential pressure pick-up, eight, two pressure sensors of ball valve and two temperature sensing
Device, for controlling the temperature of this section of circuit.
The circuit be it is detachable, can be by ball valve two and ball valve three by ball valve two, ball valve three, ball valve five, ball valve six
Between pipeline, the pipeline between ball valve five and ball valve six disassemble, the measurement for wax deposit amount.
The sampling valve one is placed in the middle part of circuit, and sampling valve two is placed in circuit end, for obtaining Experimental Flowing Object sample.
The stand is connected with circuit tail portion, for receiving Experimental Flowing Object.
If dry temperature sensor, pressure sensor are equipped with along the circuit, for acquiring circuit fluid flow parameters.
Compared with prior art, the invention has the following beneficial effects:
(1) open tank recovery experiment fluid is used, realizes crude oil disposable flowing in the duct, it can more truly mould
Pipe flow condition in quasi- actual production process.
(2) sampling valve is respectively set in test section and reference section, the experiment sample of two flowing stages can be obtained.
(3) detachable pipeline is respectively set in test section and reference section, measures wax deposit amount using weight method, experimental result is more
Add accurate.
(4) pressure differential method is surveyed into wax deposit amount and weight method surveys wax deposit amount and is associated analysis, advantageously reduced experiment and miss
Difference, profound understanding wax deposit characteristic.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: the first water-bath of 1-；2- oil tank；3- blow valve one；4- ball valve one；5- centrifugal pump；6- mass flowmenter；7-
Two water-baths；8- circuit outer layer collet；9- ball valve two；10- ball valve three；11- ball valve four；The first differential pressure pick-up of 12-；13- ball valve
Five；14- sampling valve one；15- air bath；16- ball valve five；17- ball valve six；18- ball valve seven；The second differential pressure pick-up of 19-；20-
Ball valve eight；21- sampling valve two；22- ball valve nine；23- stand.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing and by specific embodiment.It is specific the following content is combining
Preferred embodiment further detailed description of the utility model is, and it cannot be said that be the specific implementation of the utility model
It is confined to these explanations.For those of ordinary skill in the art, without departing from the concept of the premise utility, also
Several simple deductions or substitution can be made, all shall be regarded as belonging to the protection scope of the utility model.
As shown in Figure 1, the utility model includes three preparation system, circuit system and refrigeration system parts, the preparation
System is connected with circuit system, and refrigeration system is distributed in preparation system and circuit system.
The preparation system includes oil tank 2, blow valve 1 and connection pipeline therein.2 top of oil tank is equipped with and stirs
Device is mixed, for stirring the fluid in oil tank 2.The blow valve 1 is connected with 2 lower part of oil tank, for discharging the stream in oil tank 2
Body.
The circuit system includes ball valve 1, centrifugal pump 5, mass flowmenter 6, circuit outer layer collet 8, ball valve 29, ball
Valve 3 10, ball valve 4 11, the first differential pressure pick-up 12, ball valve 5 13, sampling valve 1, ball valve 5 16, ball valve 6 17, ball valve seven
18, the second differential pressure pick-up 19, ball valve 8 20, sampling valve 2 21, ball valve 9 22, stand 23 and connection pipeline therein.Institute
It states centrifugal pump 5 to be connected by ball valve 1 with 2 lower part of oil tank, for driving the fluid in oil tank 2.The mass flowmenter 6 with from
5 exit of heart pump is connected, for measuring the flow of fluid.The circuit outer layer collet 8 is arranged outside circuit, is used for recirculated water
Water in bath.The ball valve 3 10 is connected by ball valve 29 with mass flowmenter 6.The sampling valve 1 and 3 10 phase of ball valve
Even.Described 4 11 one end of ball valve is connected with the pipeline between mass flowmenter 6 and ball valve 29, and the other end and the first differential pressure sense
Device 12 is connected.Described 5 13 one end of ball valve is connected with the first differential pressure pick-up 12, the other end and ball valve 3 10 and sampling valve 1
Between pipeline be connected.The ball valve 6 17 is connected by ball valve 5 16 with sampling valve 1.The sampling valve 2 21 and ball valve
6 17 are connected.Described 7 18 one end of ball valve is connected with the second differential pressure pick-up 19, the other end and ball valve 5 16 and sampling valve 1
Between pipeline be connected.Described 8 20 one end of ball valve is connected with the second differential pressure pick-up 19, the other end and ball valve 6 17 and sampling
Pipeline between valve 2 21 is connected.The ball valve 9 22 is connected with sampling valve 2 21.The pipeline of the stand 23 and circuit goes out
Mouth is connected, for receiving Experimental Flowing Object.Pipeline between the ball valve 29, ball valve 3 10 is test section.The ball valve five
16, the pipeline between ball valve 6 17 is reference section.Pressure sensor and four temperature sensing there are four being set along the circuit
Device, for acquiring flow-data.
The refrigeration system includes the first water-bath 1, the second water-bath 7, air bath 15 and connection pipeline therein.Described first
Water-bath 1 is connected with oil tank outer layer collet, for controlling 2 internal temperature of oil tank.Second water-bath 7 and 8 phase of circuit outer layer collet
Even, for controlling the temperature of this section of circuit.Ball valve 5 16, ball valve 6 17, ball valve 7 18, second are equipped with inside the air bath 15
Differential pressure pick-up 19, ball valve 8 20, for controlling the temperature of this section of circuit.
The utility model specific operation process is described as follows:
The preparation of water-oil emulsion: it as shown in Figure 1, injecting a certain amount of crude oil or oil water mixture into oil tank 2, beats
The first water-bath 1 is opened, sets its temperature as experimental temperature.The blender stirring test fluid for opening 2 top of oil tank, to prepare oil
Aqueous emulsion or crude oil.
Wax deposit characteristic pipe flow experiment: close blow valve 3, open ball valve 1, ball valve 29, ball valve 3 10, ball valve 4 11,
Ball valve 5 13, ball valve 5 16, ball valve 6 17, ball valve 7 18, ball valve 8 20, ball valve 9 22.The reality that starting centrifugal pump 5 will prepare
It tests fluid to drive to experimental channel, utilizes pressure sensor, temperature sensor, the first differential pressure pick-up 12, second along the line
Differential pressure pick-up 19, mass flowmenter 6 acquire the pressure of fluid flowing, temperature, pressure drop, data on flows.Open sampling valve 1
With sampling valve 2 21, Experimental Flowing Object sample is obtained.After the completion of flowing, centrifugal pump 5 is closed, closes ball valve 29, ball valve 3 10, ball
Valve 5 16, ball valve 6 17 tear the pipeline between pipeline, ball valve 5 16 and the ball valve 6 17 between ball valve 29 and ball valve 3 10 open
It unloads down and weighs to wax deposit amount.
To sum up, using open tank recovery experiment fluid, the disposable flowing of crude oil in the duct is realized, it can be more truly
Simulate the pipe flow condition in actual production process.Test section and reference section is arranged in device, while utilizing differential pressure pick-up acquisition stream
Body pressure drop data, to calculate wax deposit thickness.Sampling valve is respectively set in test section and reference section, two flowing ranks can be obtained
The experiment sample of section.Detachable pipeline is respectively set in test section and reference section, measures wax deposit amount, experimental result using weight method
It is more accurate.Two methods are associated analysis, advantageously reduce experimental error, profound understanding wax deposit characteristic.Device tool
Once property flowing, measurement is accurate, structure is detachable, experiment sample can be analyzed, experimental result association analysis, it is applied widely,
The characteristics of high degree of automation.
Claims (5)
1. crude oil pipe stream wax deposit characteristic test device, it is characterised in that the device includes preparation system, circuit system and refrigeration
Three parts of system, the preparation system are connected with circuit system, and refrigeration system is distributed in preparation system and circuit system；Institute
Stating preparation system includes oil tank, blow valve and connecting line, for storing experiment oil or preparing water-oil emulsion；The circuit
System includes ball valve one, centrifugal pump, mass flowmenter, circuit outer layer collet, ball valve two, ball valve three, ball valve four, the first differential pressure biography
Sensor, ball valve five, sampling valve one, air bath, ball valve five, ball valve six, ball valve seven, the second differential pressure pick-up, ball valve eight, sampling valve
Two, ball valve nine, stand and connecting line, for testing the wax deposit characteristic of crude oil；Pipe between the ball valve two, ball valve three
Road is test section；Pipeline between the ball valve five, ball valve six is reference section；The refrigeration system includes the first water-bath, second
Water-bath and air bath；The oil tank outer layer is equipped with collet, is connected with the first water-bath, and temperature in oil tank is adjusted；On the oil tank
Portion is equipped with blender, for stirring the fluid in oil tank；The oil tank lower part is connected with blow valve, is used for Emission test fluid；
Second water-bath is connected with circuit outer layer collet, for controlling the temperature being equipped in the circuit of outer layer collet；The air bath
It is interior to be equipped with ball valve five, ball valve six, ball valve seven, the second differential pressure pick-up, eight, two pressure sensors of ball valve and two temperature sensing
Device, for controlling the temperature of this section of circuit.
2. test device according to claim 1, it is characterised in that: the circuit be it is detachable, pass through ball valve two, ball
Under valve three, ball valve five, ball valve six can dismantle the pipeline between pipeline, ball valve five and the ball valve six between ball valve two and ball valve three
Come, the measurement for wax deposit amount.
3. test device according to claim 1, it is characterised in that: the sampling valve one is placed in the middle part of circuit, sampling valve
Two are placed in circuit end, for obtaining Experimental Flowing Object sample.
4. test device according to claim 1, it is characterised in that: the stand is connected with circuit tail portion, for connecing
Receive Experimental Flowing Object.
5. test device according to claim 1, it is characterised in that: if the circuit along be equipped with dry temperature sensor,
Pressure sensor, for acquiring circuit fluid flow parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821513385.1U CN208721538U (en) | 2018-09-15 | 2018-09-15 | A kind of crude oil pipe stream wax deposit characteristic test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821513385.1U CN208721538U (en) | 2018-09-15 | 2018-09-15 | A kind of crude oil pipe stream wax deposit characteristic test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208721538U true CN208721538U (en) | 2019-04-09 |
Family
ID=65982262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821513385.1U Expired - Fee Related CN208721538U (en) | 2018-09-15 | 2018-09-15 | A kind of crude oil pipe stream wax deposit characteristic test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208721538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855513A (en) * | 2019-04-29 | 2020-10-30 | 中国石油化工股份有限公司 | Experimental device for be used for simulating wax deposit |
-
2018
- 2018-09-15 CN CN201821513385.1U patent/CN208721538U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855513A (en) * | 2019-04-29 | 2020-10-30 | 中国石油化工股份有限公司 | Experimental device for be used for simulating wax deposit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190409 Termination date: 20190915 |