CN106814177A - The test device and method of a kind of gas physical parameter in super-viscous oil - Google Patents
The test device and method of a kind of gas physical parameter in super-viscous oil Download PDFInfo
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- CN106814177A CN106814177A CN201611177620.8A CN201611177620A CN106814177A CN 106814177 A CN106814177 A CN 106814177A CN 201611177620 A CN201611177620 A CN 201611177620A CN 106814177 A CN106814177 A CN 106814177A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels, explosives
Abstract
The invention provides the test device and method of a kind of gas physical parameter in super-viscous oil.The device includes：HTHP sample mixing unit, density measurement unit, viscosity measurement unit, sampling unit, solubility measuring unit；HTHP sample mixing unit is connected with density measurement unit, viscosity measurement unit, sampling unit, solubility measuring unit respectively；Sampling unit is connected with density measurement unit, viscosity measurement unit, solubility measuring unit respectively；HTHP sample mixing unit includes sample equipment, control device, and sample equipment is provided with charging aperture and outlet, and control device includes heater.Present invention also offers the method for testing of the gas physical parameter in super-viscous oil completed using said apparatus.Said apparatus and method can the parameter such as solubility, density, viscosity carries out steady testing in super-viscous oil to gas at high temperature under high pressure.
Description
Technical field
Join the present invention relates to the physical property such as the solubility of non-condensing gas in super-viscous oil and water under a kind of high-temperature and high-pressure conditions
Several test devices and method, belongs to technical field of petroleum extraction.
Background technology
During Thermal Recovery For Viscous Oil By Steam, can play reduction heat loss with a certain amount of non-condensing gas of note, keep
The effect of steam injection pressure, the row's of helping production fluid.The conventional non-condensing gas of agent for improving oilfield recovery have nitrogen, carbon dioxide, flue gas,
Natural gas, air.After non-condensing gas injection oil reservoir, oil-gas ratio can be significantly improved, greatly improve the utilization rate of energy, and one
Determine the recovery ratio of raising crude oil in degree.
But non-condensing gas lacks to the dissolving viscosity reduction of viscous crude, solution gas output, the specific effect for improving recovery ratio etc. to be had
The data supporting of effect, it is impossible to carry out corresponding theoretical calculation and numerical simulation analysis, so that carrying out the experimental study of correlation.
Physical data of the non-condensing gas under Room-temperature low-pressure relatively enriches, but more deficient under the conditions of HTHP steam injection
It is weary.As during SAGD, steam injecting temperature at 250 DEG C or so, in 4MPa or so under such Temperature-pressure Conditions surveyed by pressure
Examination is, it is necessary to tester can simultaneously meet the requirement of high temperature and high pressure, but the PVT device for testing and analyzing of routine cannot all meet
Experiment needs.
Conventional PVT device for testing and analyzing belongs to more accurate equipment, it is adaptable in conventional thin oil low-temperature test.Internal
The volume of piston structure control test fluid, but need to complete dynamic sealing.And connect with profit under long-term high temperature, condition of high voltage
Under tactile operating mode, common dynamic sealing will become fragile, unreliable, cause the failure of an experiment.
The content of the invention
In order to solve the above-mentioned technical problem, can be right under high temperature, condition of high voltage it is an object of the invention to provide one kind
Gas parameter such as solubility, density, viscosity in super-viscous oil realizes the experimental provision of steady testing.
In order to realize above-mentioned technical purpose, the invention provides a kind of test dress of gas physical parameter in super-viscous oil
Put, gas test device of physical parameter in super-viscous oil includes：HTHP sample mixing unit, density measurement unit, viscosity
Measuring unit, sampling unit, solubility measuring unit；
Wherein, the HTHP sample mixing unit respectively with the density measurement unit, viscosity measurement unit, described
Sampling unit, solubility measuring unit connection；
The sampling unit is single with the density measurement unit, the viscosity measurement unit, solubility measurement respectively
Unit's connection；
The HTHP sample mixing unit include sample equipment, control device, the sample equipment be provided with charging aperture and
Outlet, the control device includes heater.
In super-viscous oil in the test device of physical parameter, charging aperture is on the top of sample equipment for the gas provided in the present invention
End, exports in the bottom of sample equipment.
In super-viscous oil in the test device of physical parameter, charging aperture is on the top of sample equipment for the gas provided in the present invention
End, exports in the bottom of sample equipment so that after raw material enters from the charging aperture on top, is sufficiently mixed, promotes oil, gas phase to put down
Weighing apparatus, is then sampled from the outlet of bottom, can directly obtain the oil sample containing saturation solution gas, using fluid-tight, avoids gas
Outlet is scurried into, the accuracy of subsequent analysis is influenceed.
The gas provided in the present invention is in super-viscous oil in the test device of physical parameter, it is preferable that HTHP sample mixing
Unit also includes gas mass flow gauge, check valve, pressure gauge；Wherein, gas mass flow gauge is connected with sample equipment, pressure
Table is arranged between check valve and gas mass flow gauge.
The gas provided in the present invention is in super-viscous oil in the test device of physical parameter, it is preferable that sample equipment includes
PID temperature controller, thermocouple and pressure sensor, sample equipment are provided with heat-insulation layer, and sample device interior is provided with stirring
Block.
The gas provided in the present invention is in super-viscous oil in the test device of physical parameter, it is preferable that PID temperature controller
For adjusting the temperature in sample equipment, thermocouple is used to detect the temperature change of sample equipment, and pressure sensor is used to monitor
The pressure change of sample equipment.
In the present invention, PID is a kind of temperature feedback control algorithm, refers to line integral differential.
The gas provided in the present invention is in super-viscous oil in the test device of physical parameter, it is preferable that stirring block is to carry
The metal derby of honeycomb hole.
Specific embodiment of the invention, realizes that sample equipment rotates by control device, sample device interior
Stirring block can promote VLE；In sample equipment rotary course, metal derby is fallen by Action of Gravity Field, in honeycomb hole
Gas is fully contacted with viscous crude, makes gas and the maximum saturation of viscous crude.
In super-viscous oil in the test device of physical parameter, sample equipment needs heating in advance to the gas provided in the present invention
To desired temperature, can be heated by heating plate；Preferably, HTHP sample mixing unit include also include heating plate, plus
Backing is arranged on the lateral wall of sample equipment.
The gas provided in the present invention in super-viscous oil in the test device of physical parameter, the thermocouple inspection in sample equipment
Survey heater outlet, the temperature in sample equipment, and temperature value fed back into control device, the heater in control device according to
The temperature value of feedback adjusts the heating-up temperature of heater.
The gas provided in the present invention is in super-viscous oil in the test device of physical parameter, it is preferable that density measurement unit
Including liquid metering device.
The gas provided in the present invention in super-viscous oil in the test device of physical parameter, it is highly preferred that liquid meter sets
It is standby to include collection cups and balance, wherein, collection cups are used to collect the liquid that intermediate receptacle displacement goes out, and collection cups are placed on balance
On.
The gas provided in the present invention is in super-viscous oil in the test device of physical parameter, it is preferable that viscosity measurement unit
Including rheometer.
The gas provided in the present invention is in super-viscous oil in the test device of physical parameter, it is preferable that sampling unit includes
Intermediate receptacle, pressure gauge, back pressure control device；Wherein, pressure gauge is arranged between back pressure control device and intermediate receptacle.
Specific embodiment of the invention, intermediate receptacle is a high-pressure bottle with piston.The side of piston is
Experimental Flowing Object, such as crude oil, opposite side are intermediate mediums, typically nitrogen gas and water etc., inject or discharge middle by opposite side
Medium, so as to control the flowing of Experimental Flowing Object in intermediate receptacle；Back pressure control device is used to adjust back pressure.
The gas provided in the present invention in super-viscous oil in the test device of physical parameter, it is highly preferred that back pressure control is single
Unit includes counterbalance valve, ISCO pumps.
Specific embodiment of the invention, counterbalance valve can import viscous crude from sample equipment to intermediate receptacle in the early stage
During prevent the excessive generation splash of pressure.
The gas provided in the present invention is in super-viscous oil in the test device of physical parameter, it is preferable that sampling unit is also wrapped
Pressure gauge is included, pressure gauge is arranged between counterbalance valve and intermediate receptacle.Pressure gauge can monitor the pressure before counterbalance valve, and indirectly
Monitor the pressure of intermediate receptacle.
The gas provided in the present invention is in super-viscous oil in the test device of physical parameter, it is preferable that solubility measurement is single
Unit includes flash separator, check valve, gas mass flow gauge；Wherein, check valve is arranged on gas mass flow gauge and flash distillation
Between separator.
Specific embodiment of the invention, flash separator is used for gas-liquid separation, is mainly dissolved in crude oil
Gas under the conditions of high-temperature low-pressure quick separating；Gas mass flow is used for meter gaseous integrated flux, i.e. measurement is dissolved in
Gas gross in crude oil.
The gas provided in the present invention in super-viscous oil in the test device of physical parameter, in HTHP sample mixing unit
Intermediate receptacle in sample equipment and sampling unit can be heated to assigned temperature by heating unit, and sample equipment can be to super thick
Oil carries out the sample mixing of oil gas.
The test device of the gas physical parameter in super-viscous oil provided in the present invention includes control valve, except counterbalance valve institute
Branch road outside, all of control valve is all with the valve of high temperature high voltage resistant.
Present invention also offers a kind of method of testing of gas physical parameter in super-viscous oil, it is existed using above-mentioned gas
The test device of physical parameter is completed in super-viscous oil, and the method for testing of gas physical parameter in super-viscous oil includes following step
Suddenly：
180 DEG C -300 DEG C of preset temperature is adjusted the temperature to by control device, sample is mixed in sample equipment；
Sampled by sampling unit, density is measured using density measurement unit, it is viscous using viscosity measurement unit measurement
Degree, solubility is measured using solubility measuring unit, completes the measure to gas physical parameter in super-viscous oil.
The present invention provide gas in super-viscous oil the method for testing and device of physical parameter can test different parameters it
Between relation, including：Relation between density versus temperature-pressure, viscosity-temperature and pressure, solubility-temperature and pressure.
The method of testing of physical parameter, specifically includes following steps in super-viscous oil of the invention：
The viscous crude of saturation carbon dioxide mixed in sample equipment is imported into intermediate receptacle, by the back of the body after intermediate receptacle
Pressure valve is slowly depressured, it is ensured that the viscous crude of full saturation carbon dioxide is led in intermediate receptacle；
Density measure：The viscous crude of the saturation carbon dioxide in intermediate receptacle is imported into beaker, it is full by balance measurement
With the quality of the viscous crude of carbon dioxide；Wherein, the viscous crude volume of saturation carbon dioxide is obtained by intermediate receptacle, so as to obtain saturation
The density of the viscous crude of carbon dioxide；
Viscosity measurement：The viscous crude of the saturation carbon dioxide in intermediate receptacle is imported into rheometer, is surveyed by rheometer
The viscosity of thickened oil of saturation carbon dioxide is measured, during the viscous crude of saturation carbon dioxide is led, it is ensured that temperature, pressure value are constant；
Solubility is measured：The viscous crude of the saturation carbon dioxide in intermediate receptacle is imported into flash separator, flash distillation point
Gas in device measures the content of carbon dioxide in the viscous crude of saturation carbon dioxide by flowmeter by flowmeter, passes through
The volume of intermediate receptacle draws the viscous crude cumulative volume of saturation carbon dioxide, you can obtain solubility；Complete to gas in super-viscous oil
The measure of middle physical parameter.
Above-mentioned gas are in the super-viscous oil in the method for testing of physical parameter, it is contemplated that temperature is to require that sample mixing is completed in experiment when
Temperature；Viscous crude density measure is different and different according to experimental program (such as different viscous crude properties), can according to need and
Distillation situation in distillation still is adjusted.
Above-mentioned gas are in the super-viscous oil in the method for testing of physical parameter, it is preferred that desired temperature is 180 DEG C -300 DEG C.
In the super-viscous oil in the method for testing of physical parameter, rheometer needs to carry out above-mentioned gas to the viscous crude amount for mixing
Control, preferably viscous crude amount are 50mL, wherein, the viscous crude taken is obtained by intermediate receptacle.
The test device and method of gas of the invention physical parameter in super-viscous oil, Applicable temperature are 180 DEG C -300 DEG C,
It is 0MPa-40MPa to be applicable pressure.The test device and method of gas of the invention physical parameter in super-viscous oil can be in experiments
The balancing a survey of stabilization is realized in room, is accurately obtained density and pasting parameter, such that it is able to draw in note non-condensing gas crude oil extraction
During the raising recovery ratio of non-condensing gas act on done contribution.
Brief description of the drawings
Fig. 1 is the structural representation of the test device of physical parameter in the super-viscous oil in embodiment 1.
Main Reference symbol description
The flowmeter 9 of 1 sample equipment, 2 balance, 3 gas cylinder, 4 intermediate receptacle, 56 outer gas cylinder of flash separator, 7 counterbalance valve 8
The gas mass flow gauge of 10 rheometer of pressure gauge, 11 computer 12
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and beneficial effect, now to skill of the invention
Art scheme carry out it is described further below, but it is not intended that to it is of the invention can practical range restriction.
Embodiment 1
A kind of test device of gas physical parameter in super-viscous oil, structure are present embodiments provided as shown in figure 1, the gas
Body test device of physical parameter in super-viscous oil includes：HTHP sample mixing unit, density measurement unit, viscosity measurement list
Unit, sampling unit, solubility measuring unit；
Wherein, HTHP sample mixing unit respectively with density measurement unit, viscosity measurement unit, sampling unit, solubility
Measuring unit is connected；Sampling unit respectively with HTHP sample mixing unit, density measurement unit, viscosity measurement unit, solubility
Measuring unit is connected；
HTHP sample mixing unit includes sample equipment 1, control device, gas mass flow gauge 12, check valve, pressure gauge
9th, control valve, heating plate.Wherein, gas mass flow gauge 12 is connected with sample equipment 1, pressure gauge 9 be arranged on check valve with
Between gas mass flow gauge 12.Sample equipment 1 is provided with charging aperture and outlet, and charging aperture is on the top of sample equipment 1, outlet
In the bottom of sample equipment 1, control device includes heater.The external gas cylinder 3 of HTHP sample mixing unit.
Sample equipment 1 is provided with heat-insulation layer, PID temperature controller, thermocouple and pressure sensor, and sample device interior is set
There is the stirring block with honeycomb hole；Heating plate is arranged on the lateral wall of sample equipment；The PID temperature controller of sample equipment 1
For adjusting the temperature in sample equipment, thermocouple and pressure sensor, for monitoring the pressure and temperature in sample equipment 1.
The rotation of sample equipment 1 is realized by control device, the stirring block inside sample equipment 1 can promote vapour-liquid to put down
Weighing apparatus；During sample equipment 1 rotates, metal derby is fallen by Action of Gravity Field, and the gas in honeycomb hole fully connects with viscous crude
Touch, make gas and the maximum saturation of viscous crude.
Sample equipment is carried out by heating plate be previously heated to desired temperature.
Density measurement unit includes liquid metering device, control valve；Wherein, liquid metering device includes collection cups and day
Flat 2, wherein, collection cups are used to collect the liquid that the displacement of intermediate receptacle 4 goes out, and collection cups are placed on balance 2.
Viscosity measurement unit includes rheometer 10, control valve.
Sampling unit includes intermediate receptacle 4, pressure gauge, back pressure control device, control valve, pressure gauge；Back pressure control is single
Unit includes counterbalance valve 7, ISCO pumps.Counterbalance valve is prevented during can importing viscous crude to intermediate receptacle from sample equipment in the early stage
The excessive generation splash of pressure.Pressure gauge is arranged between counterbalance valve 7 and intermediate receptacle 4, and pressure gauge can monitor intermediate receptacle 4
Pressure.The external outer gas cylinder 6 of sampling unit, outer gas cylinder 6 is connected with counterbalance valve 7.
Solubility measuring unit includes flash separator 5, check valve, flowmeter 8, control valve, computer 11.
The gas provided in the present invention in super-viscous oil in the test device of physical parameter, except the branch road where counterbalance valve
Outward, all of valve is all with the valve of high temperature high voltage resistant.
The present embodiment additionally provides the method for testing of the gas physical parameter in super-viscous oil completed using said apparatus, tool
Body is comprised the following steps：
Illustrated by taking special thick oil under 250 DEG C, 4MPa pressure and the experiment of carbon dioxide sample mixing as an example, super-viscous oil：Xinjiang wind
City, 50 DEG C of degassed crudes viscosity 100000mPaS, density 0.97g/mL；Sample body accumulates 1L；Intermediate receptacle 250mL；
Step one：500mL heavy oil heatings are first opened into sample equipment to 85 DEG C to flowable state, viscous crude is poured into and is matched somebody with somebody
Then sample equipment configured muff.The carbon dioxide volume and pressure of axe body are injected under calculating normal temperature simultaneously.Injection gas
Simultaneously, it is 250 DEG C to set heating mantle and sample mixing axe temperature to body pressure 1MPa.Stirring switch is opened, sample equipment carries out sample mixing.2
Pressure is seen after hour, tonifying Qi is carried out by gas cylinder if pressure does not arrive goal pressure, until goal pressure 4MPa.Sample mixing 24 is small
When.
Step 2：Sampling unit is connected, the intermediate receptacle 60mL of sampling unit, gas cylinder pressure-reducing valve setting pressure 5MPa, will
Intermediate receptacle piston is pushed into bottom, and pressure is down into 3.95MPa by adjusting counterbalance valve.
Step 3：Connection high temperature sample mixing device rotate to 90 ° it is vertical, upper, viscous crude is under, while pipeline and valve for piston
Carry out heating tape and be heated to 250 DEG C, heat 60min, intermediate receptacle sets and is heated to 250 DEG C.Dioxide bottle is connect, gas cylinder subtracts
Pressure valve is to 4MPa.Gas cylinder is set to be connected with sample mixing device, 60mL crude oil is transferred to intermediate receptacle by pressured difference.
Step 4：Density is measured by quality volumetric method.Pipeline and valve temperature are heated to 250 DEG C using heating tape.
The HTHP crude oil of intermediate receptacle is imported into balance, mass metering.
Repeat step three；
Step 5：Vacuumized to rheometer using vavuum pump, heating-up temperature is to 250 DEG C.Using heating tape by pipeline and valve
Door temperature is heated to 250 DEG C.Regulation gas cylinder is decompressed to 4MPa, and the HTHP crude oil of the saturated gas of intermediate receptacle is imported into stream
Become instrument, survey viscosity of crude.
Repeat step three；
Step 6：By flash separator heating-up temperature to 250 DEG C.Pipeline and valve temperature are heated to using heating tape
250℃.Regulation gas cylinder is decompressed to 4MPa, and the HTHP crude oil of intermediate receptacle is imported into flash separator, is entered using flowmeter
Row continuous gas flow collection, and by its total gas flow rate of computer statistics.Two of 60mL viscous crude under 250 DEG C, 4MPa can be obtained
Carbon oxide gas solubility, completes the test of gas physical parameter in super-viscous oil, as a result as shown in table 1, table 2 and table 3.
The thick thing oiliness parameter of the saturation carbon dioxide of table 1, density versus temperature-pressure (T=250 DEG C, P=4MPA)
| First group | Second group | 3rd group | 4th group | |
| Volume (mL) | 237.29 | 237.29 | 237.29 | 237.29 |
| Quality (g) | 190.3066 | 192.2049 | 191.493 | 189.3574 |
| Density (g/mL) | 0.802 | 0.81 | 0.807 | 0.798 |
2 viscosity versus temperatures of table-pressure
| Temperature (DEG C) | Pressure (MPA) | Viscosity (mPaS) |
| 50 | 0.1 | 92600 |
| 100 | 0.1 | 1081 |
| 150 | 0.48 | 91.4 |
| 250 | 4 | 1.15 |
3 solubility of table-temperature and pressure (T=250 DEG C, P=4MPa)
| First group | Second group | 3rd group | 4th group | |
| Crude quality (g) | 234.91 | 237.27 | 232.33 | 230.22 |
| Dissolved gas volume (L) | 0.85 | 0.87 | 0.87 | 0.86 |
| Quantity of dissolved gas (mol) | 0.04 | 0.04 | 0.04 | 0.04 |
| Solubility (* 1000mol/g) | 0.16 | 0.16 | 0.17 | 0.17 |
Above example explanation, the test device and method of gas of the invention physical parameter in super-viscous oil, applicable for temperature
It is 180 DEG C -300 DEG C to spend, and it is 0MPa-40MPa to be applicable pressure, can realize the balancing a survey of stabilization in laboratory, is accurately obtained
Density and pasting parameter, such that it is able to draw the raising recovery ratio effect of the non-condensing gas during non-condensing gas crude oil extraction is noted
The contribution done.
Claims (10)
1. a kind of test device of gas physical parameter in super-viscous oil, it is characterised in that gas physical property ginseng in super-viscous oil
Several test devices include：HTHP sample mixing unit, density measurement unit, viscosity measurement unit, sampling unit, solubility are surveyed
Amount unit；
Wherein, the HTHP sample mixing unit respectively with the density measurement unit, the viscosity measurement unit, the sampling
Unit, solubility measuring unit connection；
The sampling unit connects with the density measurement unit, the viscosity measurement unit, the solubility measuring unit respectively
It is logical；
The HTHP sample mixing unit includes sample equipment, control device, and the sample equipment is provided with charging aperture and outlet,
The control device includes heater.
2. the test device of gas according to claim 1 physical parameter in super-viscous oil, it is characterised in that the high temperature
High pressure sample mixing unit also includes gas mass flow gauge, check valve, pressure gauge；Wherein, the gas mass flow gauge with it is described
Sample equipment is connected, and the pressure gauge is arranged between the check valve and the gas mass flow gauge.
3. the test device of gas according to claim 1 physical parameter in super-viscous oil, it is characterised in that the sample
Equipment includes PID temperature controller, thermocouple and pressure sensor, and the sample equipment is provided with heat-insulation layer, and the sample sets
It is standby to be internally provided with stirring block；Wherein, the PID temperature controller is used to adjust the temperature in sample equipment, and thermocouple is used for
The temperature change of sample equipment is detected, pressure sensor is used to monitor the pressure change of sample equipment.
4. the test device of gas according to claim 3 physical parameter in super-viscous oil, it is characterised in that the stirring
Block is the metal derby with honeycomb hole.
5. the test device of gas according to claim 1 physical parameter in super-viscous oil, it is characterised in that the density
Measuring unit includes liquid metering device.
6. the test device of gas according to claim 1 physical parameter in super-viscous oil, it is characterised in that the viscosity
Measuring unit includes rheometer.
7. the test device of gas according to claim 1 physical parameter in super-viscous oil, it is characterised in that the sampling
Unit include intermediate receptacle, pressure gauge, back pressure control device, wherein, the pressure gauge be arranged on the back pressure control device and
Between the intermediate receptacle.
8. the test device of gas according to claim 1 physical parameter in super-viscous oil, it is characterised in that the dissolving
Degree measuring unit includes flash separator, check valve, gas mass flow gauge；Wherein, check valve is arranged on gas mass flow
Between meter and flash separator.
9. the method for testing of a kind of gas physical parameter in super-viscous oil, it is characterised in that it is any using claim 1-8
What the test device of the gas physical parameter in super-viscous oil described in was completed, the test of gas physical parameter in super-viscous oil
Method is comprised the following steps：
180 DEG C -300 DEG C of preset temperature is adjusted the temperature to by control device, sample is mixed in sample equipment；
Sampled by sampling unit, density is measured using density measurement unit, viscosity, profit are measured using viscosity measurement unit
Solubility is measured with solubility measuring unit, the measure to gas physical parameter in super-viscous oil is completed.
10. the relation between the method for testing test different parameters of the physical parameter in the super-viscous oil of the gas described in claim 9,
Including：Density versus temperature-pressure, viscosity-temperature and pressure, solubility-temperature and pressure.
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| CN115112817A (en) * | 2021-03-19 | 2022-09-27 | 南通中智检测服务有限公司 | Method for discriminating and detecting physical properties of underground biodegradable thickened oil |
| CN114414779A (en) * | 2022-01-21 | 2022-04-29 | 西南石油大学 | High-pressure dissolved gas wax-containing crude oil solubility, viscosity and wax precipitation process measuring device |
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| CN106814177B (en) | 2019-10-11 |
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