CN108982307A - A kind of real-time online measuring device and measurement method measuring waxy crude oil wax deposition amount - Google Patents
A kind of real-time online measuring device and measurement method measuring waxy crude oil wax deposition amount Download PDFInfo
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- CN108982307A CN108982307A CN201811016707.6A CN201811016707A CN108982307A CN 108982307 A CN108982307 A CN 108982307A CN 201811016707 A CN201811016707 A CN 201811016707A CN 108982307 A CN108982307 A CN 108982307A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/04—Investigating sedimentation of particle suspensions
Abstract
The present invention provides a kind of real-time online measuring devices for measuring waxy crude oil wax deposition amount comprising: sample cell is placed in water bath with thermostatic control to accommodate crude oil sample；Wax deposition cylinder is located inside sample cell, to accommodate the wax deposited from crude oil sample；Also, wax deposition cylinder is connected to measuring system, to measure the wax deposition amount of crude oil sample；Oil circulating pump, the crude oil sample being able to drive in sample cell circulate；Flow sensor and temperature detector are located inside sample cell, signal are measured and transmitted to crude oil sample, and signal can be transmitted to data collection system；With the variation of wax deposition amount in wax deposition cylinder, the signal of measuring system can real-time Transmission to data collection system, carry out real-time measurement so as to the wax deposition amount to crude oil sample.Also, sample cell and wax deposition cylinder combination oil circulating pump and partition and the channel that circulates for forming crude oil sample, to measure the crude oil wax deposition quality under axially different shear rate.
Description
Technical field
The present invention relates to a kind of real-time online measuring devices for measuring waxy crude oil wax deposition amount.Particularly, it is related to a kind of suitable
Real-time online for wax deposition speed measurement in oil pipeline wax deposition in high wax content oil lifting process and transmission process is surveyed
Measure device.
Background technique
Currently, pipeline crude oil is a kind of transportation oil generallyd use.This mode have freight volume is big, investment compared with
It is small, occupied area is few, by geographical conditions limitation less, be not easy climate and influenced and can run steadily in the long term, safety coefficient
Height, leakage pollution less and can centralized control many advantages, such as.However, waxy crude oil is in exploitation and pipe conveying procedure
Since the reduction of environment temperature can be deposited on the borehole wall and tube wall, this reduce effective flow area of pipeline, so that pipeline
Conveying capacity reduces.What is more, also will cause the accidents such as line clogging.
Also, most of crude oil content of wax are high, condensation point is high, and viscosity is big when low temperature.And solubility of the wax in crude oil can be with
The reduction of temperature and decline, oil temperature be higher than wax precipitation point when, wax will be fully dissolved in crude oil, formed have newton property it is molten
Liquid；Oil temperature is still Newtonian fluid lower than wax precipitation point and when being higher than anomalistic point；When oil temperature is lower than anomalistic point, solution just has
Non-Newton fluid characteristic.Further, when tube wall temperature is lower than wax precipitation point, wax crystalline substance is constantly precipitated on tube wall, effective by reducing
Caliber reduces throughput rate, increases pressure drop or even block pipeline, i.e. formation " wax deposit " phenomenon, the wax deposit phenomenon in piped oil
It is a problem of long-standing problem crude oil production and transport.
Studies have shown that the solid precipitation object of wax-containing oil pipe other than wax, further include asphaltene colloid, sand and other
Mechanical admixture, and there are also the liquid hydrocarbons of suitable high-content to be also bound among the hole of wax structure.Inspection to pipeline scarfing
Survey the result shows that, tube wall deposit has apparent boundary, and being close to its main component of the thin layer of similar fine sand at tube wall is wax,
And there is certain shear strength, thickness generally only has several millimeters, and biggish one layer of face thickness is solidifying oil in wax layer.For example,
Paraffin content measured by the deposit of grand celebration mining area pipeline is 40%~50%, and gum level is 20%~24%, and oil content is
30%~40%；The deposit paraffin content of library all spool walls is then up to 63%, and gum level 8.19%, asphalt content is
3.23%, the content of fluid oil and other impurities is 25.53%.From the deposit of above-mentioned pipeline composition from the point of view of, deposit at
Divide mainly based on wax, and the content for coagulating oil is also quite high.Therefore, sedimentary is often regarded as porous media, mainly includes solid
The solidifying oil of body wax and package thereon.The content of solid wax is related with the composition of temperature, crude oil shear rate and crude oil in sedimentary.
Wax deposit reduces circulation area of pipeline, and frictional resistance increases, and increases the thermal resistance of oil stream to inside pipe wall, makes the total of pipeline
Heat transfer coefficient decline.Therefore, the mechanism and deposition rule of wax deposit are studied, formulates reasonable wax control and pigging side for pipeline performance
The foundation that case provides science has important practical significance.
Currently, the commonly used anti-wax technique in oil field mainly includes that heating power anti-wax technique, paraffin control with inhibitor technology and strong magnetic are anti-
Wax technology etc., these anti-wax techniques are there are still heat-energy losses, pollution stratum, limitation is big and the problems such as construction cost is high.
In existing a variety of wax deposit experimental rigs for measuring the wax deposit thickness and wax deposit total amount in pipeline, in principle
All it is to make crude oil and paraffin deposit surface that there is certain temperature difference, is broadly divided into following 4 class.
The first kind: static " cold finger " and " cold plate " method, the principle of such methods be will be connected with cooling medium metal tube or
Metal plate immerses in crude oil, controls the temperature of crude oil and cooling medium, and measure on metal tube at the appointed time or metal plate
The wax amount of deposition.The shortcomings that this staticizer be cannot effectively reacting pipe actual motion when dynamic wax deposition situation.The
Two classes: spining disk method, the principle of spining disk method will be connected in the metal dish immersion crude oil of cooling medium, and metal dish is under motor drive
Rotation, controls the temperature of crude oil and cooling medium and the revolving speed of metal dish, what measurement deposited on metal dish at the appointed time
Paraffin amount.This method measures and controls more convenient, but wax will be deposited on the inner disc of rotation, this and crude stream in practical pipeline
Dynamic be deposited in fixation surface is inconsistent.Third class: circuit method, the principle of circuit method are to recycle crude oil in pipeline,
Pipeline is dipped in cooling medium, controls the flow of crude oil, the temperature of crude oil and cooling medium, measurement is at the appointed time in pipeline
Wax deposition amount on wall.However, this circuit measurement wax deposit thickness is complex, because viscosity of crude is with the extension of time of measuring
It changes, is difficult to determine that pressure drop increase is due to caused by becoming smaller caliber or viscosity change.Meanwhile circuit oil is more, consumption
Duration.4th class: rotary dynamic paraffin precipitation device, the principle of the device are to control sample cylinder by constant temperature oil bath and water bath with thermostatic control
The temperature of interior crude oil temperature and wax deposition drum outer wall, so that temperature lower than oil temperature in sample cylinder and is less than crude oil analysis at wax deposition drum outer wall
Wax point, while controlling sample cylinder and being rotated under a certain speed, it is in crude oil at wax deposition tube wall surface under certain shear strength, this
When wax deposition drum outer wall on will have wax layer generation, so that wax deposition of the Simulation of Crude Oil under certain shear stress and oily wall temperature difference is real
It tests.The experimental provision can preferably react the flow condition of crude oil in the duct, and close to the crude oil wax in field pipes
Rule.However, the device needs to remove test section after testing to weigh wax deposition amount, drip phenomenon will cause, experiment is used
Oil is more, and experimental period is longer.
Summary of the invention
The object of the present invention is to provide a kind of for measuring the real-time online of waxy crude oil shearing deposition rate and wax deposition amount
Measuring device.The measuring device can concisely, quickly and accurately measure the wax deposit speed of waxy crude oil at different conditions
Rate, and foundation can be provided for the real-time wax deposition situation of clear crude oil pipeline and determining pipeline cleaning period.
To achieve the above object, real-time online measuring device according to the present invention specifically can include: sample cell, sample cell
It is placed in water bath with thermostatic control, for accommodating crude oil sample；Wax deposition cylinder, wax deposition cylinder are located inside sample cell, to condense from crude oil sample
The wax deposited in product；Also, wax deposition cylinder can be connected to measuring system, to measure the wax deposition amount of crude oil sample；Oil circulating pump follows
Ring oil pump is able to drive the crude oil sample in sample cell and is circulated；Flow sensor, flow sensor are located at sample cell
Inside measures to crude oil sample and transmits signal, and signal can be transmitted to data collection system；And temperature detection
Device, temperature detector are located inside sample cell, signal are measured and transmitted to crude oil sample, and signal can be transmitted to number
According to acquisition system；Annular partition, annular partition make sample cell form two spaces, and crude oil sample can follow in two spaces
Ring；And water conservancy diversion web plate, water conservancy diversion web plate are located at sample cell lower part, carry out one-way flow control to crude oil sample；And wherein, with
The variation of wax deposition drum outer wall wax deposition amount, the signal of measuring system also can real-time Transmission to data collection system, so as to
Real-time measurement is carried out to the wax deposition amount of crude oil sample.
Real-time online measuring device according to the present invention, in a preferred embodiment, sample cell and wax deposition cylinder can
The channel that circulates of crude oil sample is formed, in conjunction with oil circulating pump and partition to measure the crude oil under axially different shear rate
Wax deposit quality.
Real-time online measuring device according to the present invention, in a preferred embodiment, flow sensor and temperature inspection
The signal detected in sample cell can be transmitted to exterior terminal by surveying device, and can be converted into the data that can be read.
Real-time online measuring device according to the present invention, in a preferred embodiment, wax deposition cylinder being capable of based on crude
The feature of the conveyance conduit of sample and be made；And wax deposition cylinder is connected directly with balance, is existed based on crude oil sample and crystalline wax
The principle of density contrast can directly weigh the wax deposition amount of wax deposition tube wall surface.
Real-time online measuring device according to the present invention, in a preferred embodiment, measuring device can be surveyed continuously
Wax deposition amount of the crude oil sample in different moments is measured, without separating wax deposition cylinder from crude oil sample.
Real-time online measuring device according to the present invention, in a preferred embodiment, the original being added in measuring device
Oil samples can be recycled.
Real-time online measuring device according to the present invention can be realized the application of following several respects: (1) wax deposition cylinder is according to reality
Border produces the characteristics of Crude Oil conveyance conduit and is made, and can more really simulate the crude oil wax feelings in actual production
Condition；(2) measuring device can be realized primary addition crude oil sample, the continuous wax deposition amount for measuring different moments；And in measurement
It does not need to separate wax deposition cylinder from crude oil sample, occurs crude oil weeping when can be avoided the separation of wax deposition cylinder and this is existing
As the influence to true wax deposition amount；(3) existing measuring device needs to load radial shear rate, different, according to this
The measuring device of invention can influence of the axially different shear rate of real-time measurement to crude oil wax, when closer to Crude Oil Transportation
Truth.
The present invention also provides a kind of real-time online measuring method continuously measured for crude oil wax rate, Neng Goushi
The continuous measurement of existing axially different shear rate and different moments.Specifically, real-time online measuring method energy according to the present invention
Enough include the following steps:
Step (a): sample cell is placed in water bath with thermostatic control, and wax deposition cylinder, flow sensor and temperature detector are placed in
In sample cell, the signal of crude oil sample in temperature detector and flow sensor test sample slot, and send a signal to data and adopt
Collecting system；
Step (b): sample cell and wax deposition cylinder combination partition, oil circulating pump and form crude oil sample circulate channel；
Step (c): it drives crude oil sample to be circulated by the ringing of oil circulating pump, and measures crude oil sample
Wax deposit quality under axially different shear rate；
Step (d): the wax deposition cylinder inside sample cell is connected to measuring system；Also, by inside cryogenic thermostat water-bath
SAPMAC method conduit carries out temperature control to wax deposition cylinder；
Step (e): in the fixed bracket of the outer wall of wax deposition cylinder, bracket other end is connected directly with balance, can real-time online
Read the registration of balance, Application density difference principle, to obtain the quality of crystalline wax；Also, with the variation of wax deposition cylinder quality
And real-time Transmission signal carries out real-time online measuring to measuring system with the wax deposition amount to crude oil sample.
Real-time online measuring method according to the present invention can continuously measure crude oil sample in a preferred embodiment
Wax deposition amount of the product in different moments, without separating wax deposition cylinder from crude oil sample.
Real-time online measuring method according to the present invention, in a preferred embodiment, wax deposition cylinder being capable of based on crude
The feature of the conveyance conduit of sample and be made；Also, wax deposition cylinder is connected directly with balance, is existed based on crude oil sample and crystalline wax
The principle of density contrast can directly weigh the wax deposition amount of wax deposition tube wall surface.
Real-time online measuring method according to the present invention, in a preferred embodiment, flow sensor and temperature inspection
The signal detected in sample cell can be transmitted to exterior terminal by surveying device, and can be converted into the data that can be read.
Wax deposition cylinder is suspended in crude oil in a preferred embodiment by real-time online measuring method according to the present invention
In sample, temperature control is carried out to crude oil and wax deposition tube wall surface by conventional thermostatic water-bath, cryogenic thermostat water-bath, them is made to reach requirement
Temperature, at this time by the quality of real-time measurement wax deposition cylinder, the continuous different moments crude oil that measures analyses wax amount.
Real-time online measuring method according to the present invention can pass through conventional thermostatic water in a preferred embodiment
Bath, cryogenic thermostat water-bath control the temperature difference of sample cell and wax deposition tube wall surface respectively, measure the analysis wax rate under different temperature difference conditions.
Real-time online measuring method according to the present invention, in a preferred embodiment, sample cell, wax deposition cylinder and annular
Spacer gap, oil circulating pump construct the circulatory flow of crude oil sample, can be by changing oil circulating pump Inhaling Crude Oil sample
Uninterrupted and the flow velocity for adjusting crude oil between annular partition and sample cell, to change wax deposition tube wall surface shear rate, with reality
Wax Sediment Velocity measurement under existing axially different shear rate.
Real-time online measuring method according to the present invention, used measurement method are the direct method of measurement, simple accurate,
Measurement result can be accurately reflected, and is effectively applied in high wax content oil lifting process in oil pipeline wax deposition amount and defeated
The measurement of wax deposition rate during sending.
Real-time online measuring device according to the present invention and measurement method have the following beneficial effects:
Measuring device and measurement method according to the present invention can be realized the summary of paraffin precipitation device, easy to operate, and real
Experiment device is small in size, and occupied area is few, tests required crude oil sample and is also able to carry out and recycles, the investment of experimental provision at
This is relatively low；Wax deposition cylinder is realized to be connected directly with the balance of measuring system, and using crude oil and wax crystalline substance, there are the originals of density contrast
Reason can directly weigh the wax deposition amount on wax deposition tube wall surface, easy to use, measurement accuracy rate height.
Also, measuring device according to the present invention and measurement method, in addition to can be used in conventional wax deposition simulation and prediction
Outside, additionally it is possible to for evaluating the wax deposition effect under different shear rate, the composition for studying wax deposition layer and ratio of each component etc..
Further, measuring device and measurement method according to the present invention are furnished with sensor and data acquisition processing system, directly
It connects and is transferred to computer and can carry out data acquisition and data record analysis, while computer data mode can also be generated, to
Analysis and production curve graph, can import data file at any time, in order to user's use.
Detailed description of the invention
Fig. 1 is according to the present invention for measuring the real-time online measuring dress of waxy crude oil shearing deposition rate and wax deposition amount
The schematic diagram set.
Fig. 2 is the schematic diagram of the water bath device of real-time online measuring device according to the present invention.
Fig. 3 is the schematic diagram of the paraffin precipitation device of real-time online measuring device according to the present invention.
Wherein: 1: recirculated water bath；2: thermal insulation plastic water pipe；3: conventional thermostatic water-bath；4: sample cell；5: wax deposition cylinder；6:
Flow sensor；7: SAPMAC method diversion pipe；8: low-temperature insulation lid；9: soak lid；10: bracket；11: temperature detector；12:
Cryogenic thermostat oil bath；13: annular partition；14: balance；15: water conservancy diversion web plate；16: electric cabinet；17: thermoregulator；18: temperature
Display；19: water bath with thermostatic control import；20: constant water bath box；21: chilled water unit import；22: chilled water unit outlet；23:
Wax deposition barrel；24: flow channels；25: oil circulating pump；26: water bath with thermostatic control outlet；27: water-bath circulation canal；28: temperature is adjusted
Device；29: pot body insulation cover.
Specific embodiment
Further describe the present invention with reference to the accompanying drawings and examples.
Real-time online measuring device according to the present invention specifically includes: sample cell 4, sample cell 4 are placed in water bath with thermostatic control,
For accommodating crude oil sample；Wax deposition cylinder 5, wax deposition cylinder 5 are located inside sample cell 4, to condense the wax deposited from crude oil sample；And
And wax deposition cylinder 5 can be connected to the balance 14 of measuring system by bracket 10, to measure the wax deposition amount of crude oil sample；Recycle oil
Pump 25, the crude oil sample that oil circulating pump 25 is able to drive in sample cell 4 is circulated；Flow sensor 6, flow sensor
6 are located inside sample cell 4, and the signal that signal is measured and transmitted to crude oil sample, and is measured is transmitted to data acquisition system
System；And temperature detector 11, temperature detector 11 are located inside sample cell 4, and signal is measured and transmitted to crude oil sample,
And the signal measured is transmitted to data collection system；Annular partition 13, annular partition 13 make sample cell 4 form two skies
Between, crude oil sample is recycled in two spaces；And water conservancy diversion web plate 15, water conservancy diversion web plate 15 is located at 4 lower part of sample cell, to crude oil
Sample carries out one-way flow control.
A specific embodiment according to the present invention, for measuring the reality of waxy crude oil shearing deposition rate and wax deposition amount
When on-line measurement device be an experimental provision, Fig. 1 show the overall structure diagram of the experimental provision.As shown in Figure 1, should
It can also recirculated water bath 1, conventional thermostatic water-bath 3, cryogenic thermostat water-bath 12, thermal insulation plastic water pipe 2, SAPMAC method in experimental provision
Diversion pipe 7, electric cabinet 16 and its operating system etc..In the real-time online measuring device according to the present embodiment, in sample cell 4
In flow sensor 6 and protractor 11 are installed, be fixed on inside annular partition 13, sample driven by the effect of oil circulating pump 12
Product slot Central Plains oil samples carry out cycles samples by 15 one-way flow of water conservancy diversion web plate, to pass through sample cell 4, wax deposition cylinder 5 and ring
13 gap of shape partition, oil circulating pump 25 constitute the circulatory flow of crude oil sample, measure the crude oil wax under axially different shear rate
Deposition quality；Temperature control is carried out to sample cell by conventional thermostatic water-bath 2 outside sample cell 4, operates water-bath dress as shown in Figure 2
It sets and adjusts thermoregulator 28, the temperature of sample cell 4 is read by temperature indicator 18；The wax deposition cylinder 5 suspended in sample cell 4
It is cryogenic thermostat water-bath 12 inside it, water-bath is carried out by SAPMAC method diversion pipe 7 between and recycles temperature control, SAPMAC method diversion pipe
7 are separately connected the entrance and exit of cryogenic thermostat water-bath, and bracket 10, bracket 10 other one are fixed on 5 outer wall of wax deposition cylinder
End is fixed with balance 14 by nut, is capable of the registration of real-time online reading balance, to obtain 5 outer wall of different moments wax deposition cylinder
The quality of crystalline wax.
Mechanical signal is converted electric signal by flow sensor 6, the number being transferred in data collection system by data line
According on capture card.The entrance of sample cell 4 is connected the outlet of conventional thermostatic water-bath 3 by insulating plastic pipe pipe 2, the outlet of sample cell 4 by
Thermal insulation plastic water pipe 2 connects the entrance of conventional thermostatic water-bath 3, and the temperature of sample cell 4 is controlled by conventional thermostatic water-bath.
Also, cooled down to wax deposition cylinder 5 by cryogenic thermostat water-bath 12,5 wall surface of wax deposition cylinder is made to reach required temperature, two
Person is connected to water bath device by thermal insulation plastic water pipe 2.As shown in Fig. 2, conventional thermostatic water-bath 3 carries out temperature control to sample cell 4, make
Sample cell 4 reaches also the same connected pipes water-bath 1 of required temperature, and temperature control can be by the temperature above system control box 17
Adjuster 28 is adjusted, and can show on temperature indicator 18.
Fig. 3 is the schematic diagram according to the paraffin precipitation device of the embodiment of the present invention.Wherein, wax deposition cylinder 5 is suspended in sample cell 4
In, temperature control is carried out to sample crude oil by conventional thermostatic water-bath 3, the temperature of requirement is reached, passes through conventional thermostatic water
Bath 3, cryogenic thermostat water-bath 12 control the temperature difference of 5 wall surface of sample cell 4 and wax deposition cylinder respectively, measure the analysis wax under different temperature difference conditions
Rate；Sample cell 4, wax deposition cylinder 5 and 13 gap of annular partition and oil circulating pump 25 construct the circulatory flow of crude oil sample, pass through
Change the uninterrupted of 25 Inhaling Crude Oil sample of oil circulating pump and adjust the flow velocity of crude oil between annular partition 13 and sample cell 4,
To change wax deposition tube wall surface shear rate, the Wax Sediment Velocity measurement under axially different shear rate is realized.
By the measurement process of experimental provision in embodiment as above, real-time online measuring device overall structure ratio of the invention
More simple to operation, the device entirety occupied area is small, and sample fuel consumption is few, and the test period is short；And each experiment condition can be from
It is microcosmic it is upper match well with Oil Field condition, wax deposition cylinder can also be according to the spy of the crude oil pipeline in actual production
Sign is processed, and the wax deposition situation of crude oil under various field conditions can be adequately reacted.
Also, according to an embodiment of the invention, additionally providing the real-time online of a kind of crude oil wax rate continuously measured
Measurement method, specifically, according to an embodiment of the invention, the real-time online measuring method can include the following steps:
Step (a): sample cell 4 is placed in water bath with thermostatic control, and by wax deposition cylinder 5, flow sensor 6 and temperature detector 11
It is placed in sample cell 4, the signal of crude oil sample in 6 test sample slot of temperature detector 11 and flow sensor, and sends signal
To data collection system；
Step (b): sample cell 4 and wax deposition cylinder 5 in conjunction with annular partition 13, oil circulating pump 25 and form the circulation of crude oil sample
Flow channel；
Step (c): it drives crude oil sample to be circulated by the ringing of oil circulating pump 25, and measures crude oil sample
Wax deposit quality of the product under axially different shear rate；
Step (d): the wax deposition cylinder 5 in sample cell 4 is connected to measuring system；Also, by inside cryogenic thermostat water-bath
SAPMAC method conduit carries out temperature control to wax deposition cylinder；
Step (e): in the fixed bracket 10 of the outer wall of wax deposition cylinder 5,10 other end of bracket is connected directly with balance 14, can be real
When read the registration of balance 14, Application density difference principle, to obtain the quality of crystalline wax online；Also, with 5 matter of wax deposition cylinder
The variation of amount and real-time Transmission signal carries out real-time online measuring to measuring system with the wax deposition amount to crude oil sample.
According to above-mentioned measurement method, wax deposition cylinder 5 can be suspended in the crude oil sample in sample cell 4, pass through conventional perseverance
Tepidarium, cryogenic thermostat water-bath carry out temperature control to crude oil sample and 5 wall surface of wax deposition cylinder, so that them is reached the temperature of requirement, at this time
By the quality of real-time measurement wax deposition cylinder 5, the continuous different moments crude oil that measures analyses wax amount.
According to above-mentioned measurement method, sample cell 4 and knot can be controlled respectively by conventional thermostatic water-bath, cryogenic thermostat water-bath
The temperature difference of 5 wall surface of wax cylinder measures the analysis wax rate under different temperature difference conditions.
According to above-mentioned measurement method, the crude oil of sample cell 4, wax deposition cylinder 5 and 13 gap of annular partition, the composition of oil circulating pump 25
The circulatory flow of sample can adjust annular partition 13 by changing the uninterrupted for the crude oil sample that oil circulating pump 25 sucks
The flow velocity of crude oil sample between sample cell 4 realizes axially different shearing speed to change 5 wall surface shear rate of wax deposition cylinder
Wax Sediment Velocity measurement under rate.
According to the abovementioned embodiments of the present invention, the measurement method used is simple accurate for the direct method of measurement, can be accurately anti-
Experimental result is reflected, and is effectively applied in high wax content oil lifting process and is managed in wax deposition amount and transmission process in oil pipeline
The measurement of road wax deposition rate.
It should be pointed out that real-time online measuring device according to the present invention and measurement method, the above preferred embodiment are only made
For exemplary purpose.For those skilled in the art of the present technique, before the range for not departing from appended claims of the present invention
It puts, various modifications and variations can also be made, these improvements and modifications should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a kind of real-time online measuring device for measuring waxy crude oil wax deposition amount, which is characterized in that the measuring device includes:
Sample cell, the sample cell is placed in water bath with thermostatic control, for accommodating crude oil sample；
Wax deposition cylinder, the wax deposition cylinder is located inside the sample cell, to condense the wax deposited in the crude oil sample；Also, institute
It states wax deposition cylinder and is connected to measuring system, to measure the wax deposition amount of the crude oil sample；
Oil circulating pump, the oil circulating pump drive the crude oil sample in the sample cell to be circulated；
Flow sensor, the flow sensor are located inside the sample cell, the crude oil sample are measured and transmitted
Signal, and signal is transmitted to data collection system；
Temperature detector, the temperature detector are located inside the sample cell, the crude oil sample are measured and transmitted
Signal, and signal is transmitted to data collection system；
Annular partition, the annular partition make the sample cell form two spaces, and the crude oil sample is in described two skies
It is interior recyclable；And
Water conservancy diversion web plate, the water conservancy diversion web plate are located at the sample cell lower part, carry out one-way flow control to the crude oil sample；And
And
Wherein, with the variation of the wax deposition drum outer wall wax deposition amount, the signal of the measuring system also real-time Transmission to the number
According to acquisition system, so that the wax deposition amount to the crude oil sample carries out real-time measurement.
2. measuring device as described in claim 1, which is characterized in that wherein, the sample cell and wax deposition cylinder combination institute
It states oil circulating pump and partition and forms the channel that circulates of the crude oil sample, to measure the original under axially different shear rate
Oily wax deposit quality.
3. measuring device as claimed in claim 2, which is characterized in that by changing the oil circulating pump Inhaling Crude Oil sample
Uninterrupted and the flow velocity for adjusting the crude oil sample between the partition and sample cell, to change wax deposition tube wall surface shearing speed
Rate.
4. measuring device as described in claim 1, which is characterized in that wherein, by controlling the sample cell and the wax deposition
The temperature difference of tube wall surface measures the wax deposition rate under different temperature difference conditions.
5. measuring device as described in claim 1, which is characterized in that wherein, the flow sensor and the temperature detection
The signal detected in the sample cell is transmitted to exterior terminal by device, and is converted into the data that can be read.
6. measuring device as described in claim 1, which is characterized in that the wax deposition cylinder can be according to the defeated of the crude oil sample
It send the feature of pipeline and is made, and
Wherein, the wax deposition cylinder is connected directly with balance, can based on the crude oil sample and crystalline wax there are the principle of density contrast
Directly weigh the wax deposition amount of the wax deposition tube wall surface.
7. such as described in any item measuring devices of claim 1-6, which is characterized in that the measuring device can be measured continuously
Wax deposition amount of the crude oil sample in different moments, without separating wax deposition cylinder from the crude oil sample.
8. a kind of real-time online measuring method for measuring waxy crude oil wax deposition amount, which is characterized in that the method can include such as
Lower step:
Step (a): sample cell is placed in water bath with thermostatic control, and wax deposition cylinder, flow sensor and temperature detector is placed in described
In sample cell, the temperature detector and the flow sensor detect the signal of the crude oil sample in the sample cell, and
Send a signal to data collection system；
Step (b): the sample cell and the wax deposition cylinder combination annular partition, oil circulating pump and form following for the crude oil sample
Ring flow channel；
Step (c): the crude oil sample is driven to carry out recycle stream by the ringing of the Transmission system in the oil circulating pump
It is dynamic, and measure wax deposit quality of the crude oil sample under axially different shear rate；
Step (d): the wax deposition cylinder inside the sample cell is connected to measuring system；Also, by cryogenic thermostat water-bath
The SAPMAC method conduit in portion carries out temperature control to the wax deposition cylinder；
Step (e): in the fixed bracket of the outer wall of the wax deposition cylinder, the bracket other end is connected directly with balance, can be real-time
The registration of the balance, Application density difference principle, to obtain the quality of crystalline wax are read online；Also,
Wherein, with the variation of wax deposition cylinder quality and real-time Transmission signal is to the measuring system, to the crude oil sample
Wax deposition amount carries out real-time online measuring.
9. measurement method as claimed in claim 8, which is characterized in that the wax deposition cylinder can be according to the defeated of the crude oil sample
It send the feature of pipeline and is made；.
10. measurement method as claimed in claim 8 or 9, which is characterized in that the measurement method can continuously measure the original
Wax deposition amount of the oil samples in different moments, without separating the wax deposition cylinder from the crude oil sample.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811016707.6A CN108982307B (en) | 2018-09-03 | 2018-09-03 | A kind of real-time online measuring device and measurement method measuring waxy crude oil wax deposition amount |
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| CN201811016707.6A CN108982307B (en) | 2018-09-03 | 2018-09-03 | A kind of real-time online measuring device and measurement method measuring waxy crude oil wax deposition amount |
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| CN108982307A true CN108982307A (en) | 2018-12-11 |
| CN108982307B CN108982307B (en) | 2019-10-18 |
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| CN109991274A (en) * | 2019-04-24 | 2019-07-09 | 东北石油大学 | A method of characterization waxy crude oil emulsion gelling nucleation kinetics process |
| CN110333163A (en) * | 2019-07-05 | 2019-10-15 | 东北石油大学 | Method for predicting thixotropic property of W/O type wax-containing crude oil emulsion |
| CN110907605A (en) * | 2019-12-10 | 2020-03-24 | 东营市百扬石油科技有限责任公司 | Simulation efficiency testing device for medicament used in oil well casing |
| CN110927199A (en) * | 2019-12-20 | 2020-03-27 | 西安石油大学 | Indoor experimental device for high-temperature scaling of crude oil heat exchanger |
| CN111398509A (en) * | 2020-05-15 | 2020-07-10 | 淄博山分分析仪器有限公司 | Crude oil or asphalt wax content rod-shaped thin-layer chromatography method |
| CN112816517A (en) * | 2019-11-18 | 2021-05-18 | 中国石油天然气股份有限公司 | Wax precipitation experiment system and wax precipitation cylinder |
| CN113588478A (en) * | 2020-04-30 | 2021-11-02 | 中国石油天然气股份有限公司 | Wax deposition simulation equipment |
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| CN117589635A (en) * | 2024-01-18 | 2024-02-23 | 四川职业技术学院 | Method and device for measuring influence of colloid asphalt on gelation characteristics of waxy crude oil pipeline |
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| CN110927199A (en) * | 2019-12-20 | 2020-03-27 | 西安石油大学 | Indoor experimental device for high-temperature scaling of crude oil heat exchanger |
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| CN111398509A (en) * | 2020-05-15 | 2020-07-10 | 淄博山分分析仪器有限公司 | Crude oil or asphalt wax content rod-shaped thin-layer chromatography method |
| CN114138033A (en) * | 2021-11-25 | 2022-03-04 | 西安石油大学 | Constant temperature control method and device for quick-opening ball collecting barrel |
| CN114138033B (en) * | 2021-11-25 | 2022-08-05 | 西安石油大学 | Constant temperature control method and device for quick-opening ball collecting barrel |
| CN117589635A (en) * | 2024-01-18 | 2024-02-23 | 四川职业技术学院 | Method and device for measuring influence of colloid asphalt on gelation characteristics of waxy crude oil pipeline |
| CN117589635B (en) * | 2024-01-18 | 2024-03-19 | 四川职业技术学院 | Method and device for measuring influence of colloid asphalt on gelation characteristics of waxy crude oil pipeline |
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