CN206208627U - A kind of dissolved gas crude oil is prepared and solubility measurement apparatus - Google Patents
A kind of dissolved gas crude oil is prepared and solubility measurement apparatus Download PDFInfo
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- CN206208627U CN206208627U CN201621351325.5U CN201621351325U CN206208627U CN 206208627 U CN206208627 U CN 206208627U CN 201621351325 U CN201621351325 U CN 201621351325U CN 206208627 U CN206208627 U CN 206208627U
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Abstract
Prepared the utility model discloses a kind of dissolved gas crude oil and solubility measurement apparatus, dissolved gas crude oil is prepared using piston cylinder, pressure fine setting can be carried out using piston and manually-actuated metering pump, prepare single-phase dissolved gas crude oil.To accelerate vapor liquid equilibrium, destruction of the shearing to dissolved gas crude oil is avoided simultaneously, is combined with molten gas phase is rotated using the distribution gas injection of porous microchannel, clamping device fixed piston cylinder, using cycloidal planetary gear speed reducer and motor, piston cylinder is set continuously to rotate so as to reach vapor liquid equilibrium.Piston cylinder top is dissolved gas crude oil with pressure, and bottom is water, the solubility using step-down from drainage measurement gas in crude oil, and piston cylinder is effectively combined with drainage, simplifies drainage arrangement, and measurement is accurate.Compared with existing dissolved gas crude oil detection device of physical property, the utility model has can prepare the characteristics of single-phase dissolved gas crude oil, pressure are fine-tuning, draining measurement is integrated with dissolved gas crude oil Preparation equipment, solubility measurement is accurate under without shearing condition.
Description
Technical field
The utility model belongs to base oil properties technical field of measurement and test, and more particularly to one kind is without dissolved gas crude oil under shearing condition
Prepare and solubility measurement apparatus.
Background technology
Because crude oil Simulation on whole pay zones is relatively costly and limitation of oil reservoir conformability, gas drives to recover the oil turns into what is recovered the oil at present
Leading, effective method.It refers to be recovered the oil by injecting gas-powered to oil reservoir that gas drives oil recovery, in oil reservoir high temperature, the ring of high pressure
In border, gas is highly soluble in crude oil and forms dissolved gas crude oil, changes crude oil flow performance.It is in research dissolved gas crude oil mobile performance
It is real so as to carry out flowing in system, it usually needs gas is dissolved in into crude oil under uniform temperature, pressure carries out the preparation of dissolved gas crude oil
Test.Numerous experiments show that dissolved gas crude oil characteristic depends not only on the temperature of preparation, pressure, and receive shearing bar to a greater extent
The influence of part.When gas is dissolved in crude oil, it is necessary to 3~4 days complete dissolving.To reduce the vapor liquid equilibrium time, generally crude oil is entered
Row stirring increase gas liquid interfacial area, but stirring shearing simultaneously can change dissolved gas crude oil property to a certain extent, and experiment is tied
Fruit causes bigger influence.Therefore, in dissolved gas crude oil preparation process, there is certain contradiction in shearing condition with the vapor liquid equilibrium time
Relation.After former oil soluble gas, under diluting effect, micelle destruction, the joint effect of molecular force effect, viscosity of crude is significantly
Reduce, but different molten tolerance have different improvements to system viscosity, therefore study under different temperatures, pressure, gas exists
Solubility in crude oil is significant to engineering practice.
To prepare dissolved gas crude oil and measuring its solubility, Li Yu magnitude people propose a kind of dissolved gas crude oil and prepare and solubility
Measurement apparatus（Li Yuxing, Li Manman, open and build supercritical COs2Solubility and volume factor research [J] in viscous crude
Science and technology and engineering, 2013,13 (1)：53-57）.Dissolved gas crude oil is prepared in high-temperature high-pressure reaction kettle, is set in reactor
Have blade oar for stir accelerate dissolve.Gas injection system pressurizes for gas injection, and gas-liquid two-phase reduces equilibration time by stirring.Root
Undissolved gas volume is calculated according to oil phase volume and reactor volume, the difference of gas injection rate and undissolved gas flow is solution gas
The scale of construction, so as to obtain solubility.There is subject matter in it, blade stirring has certain shear action to dissolved gas crude oil, causes
The change of properties of samples.Additionally, there is certain gas compartment in reactor for maintaining pressure, that is, there is gas-liquid two-phase, it is impossible to
Single-phase dissolved gas crude oil is obtained, i.e., cannot prepare unsaturated dissolved gas crude oil.Due to Calculation of Solubility need to measure total gas injection volume,
Oil phase volume, experiment gas-phase space volume, temperature, pressure and other parameters, therefore there is larger error in measurement result.
The content of the invention
In order to overcome the defect of prior art, the purpose of this utility model to be to provide a kind of single-phase without being prepared under shearing condition
Dissolved gas crude oil and the device of solubility accurate measurement can be carried out.
The utility model prepares dissolved gas crude oil using piston cylinder, and pressure fine setting can be carried out using piston and manually-actuated metering pump,
Obtain single-phase dissolved gas crude oil.To accelerate vapor liquid equilibrium, while destruction of the shearing to dissolved gas crude oil is avoided, using porous microchannel point
Cloth gas injection is combined with molten gas phase is rotated, clamping device fixed piston cylinder, using cycloidal planetary gear speed reducer and motor, makes piston cylinder
Continuously rotate so as to reach vapor liquid equilibrium.Piston cylinder top is dissolved gas crude oil with pressure, and bottom is water, is surveyed from drainage using step-down
Solubility of the amount gas in crude oil, piston cylinder is effectively combined with drainage, simplifies drainage arrangement, and the gas of release can be again
Again using the following group experiment is carried out, measurement result is accurate.
The specific technical scheme of the utility model is as follows：
A kind of dissolved gas crude oil is prepared and solubility measurement apparatus, including gas injection system, injection system and sample system three
Part, the gas injection system and injection system are connected by triple valve with sample system；The gas injection system includes high pressure successively
Gas cylinder, dropping valve, check-valves and connecting line, gas cylinder provide source of the gas, and dropping valve is used for Control release pressure, and check-valves is prevented
Only gas backstreaming；The injection system includes the oil tank, screw pump, online-emulsification instrument and the connecting line that are sequentially connected；It is described to match somebody with somebody
Sample system includes piston cylinder, graduated cylinder and manually-actuated metering pump, and the piston that can move freely is provided with the piston cylinder, by piston cylinder point
It is divided into two mutual disconnected compartments；The first compartment of the piston cylinder is equipped with molten gas viscous crude, by top triple valve and gas injection,
Injection system is connected；The second compartment of the piston cylinder is equipped with water, and lower section is connected with manually-actuated metering pump by gate valve, can be pressed
Power is finely tuned；The second compartment lower section of the piston cylinder is provided with draining valve, and draining valve bottom is provided with a graduated cylinder, is deflated by pressure release
Draining is realized surveying molten tolerance from draining.
The clamped device of the piston cylinder is fixed and cycloidal planetary gear speed reducer and motor by connecting are realized rotating molten gas.
Piston cylinder side wall is provided with three microchannel pipelines, realizes distributed gas injection, accelerates gas dissolving.
The piston cylinder top is provided with atmospheric valve.
The online-emulsification instrument rear side sets return line and is connected with oil tank, for preparing water-oil emulsion.
The oil tank lower section is additionally provided with blowoff valve.
The oil tank top is provided with electric mixer.
Outer layer chuck is provided with outside the oil tank, circulating hot water control heating crude oil temperature is provided by water-bath.
Compared with prior art, the present invention has the advantages that：
（1）Oiling carries out metering injection flow without flowmeter using manually-actuated metering pump.
（2）Manually-actuated metering pump combination piston can be finely adjusted to piston sample cylinder pressure, prepare single-phase dissolved gas crude oil.
（3）Using molten gas method is rotated, vapor liquid equilibrium speed is accelerated, it is to avoid the shear action of leaf oar stirring is to molten gas
The destruction of crude oil.
（4）Molten tolerance is measured using from drainage, draining is integrated with air-dissolving apparatus, flow simple and flexible.
（5）Crude oil injection sets minor loop, can online carry out oil-water emulsion.
（6）Using three-way valve, the online injection of crude oil, gas can be carried out, without handling crude oil manually.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram.
Specific embodiment
Describe the utility model in detail below in conjunction with the accompanying drawings and by specific embodiment.Herein below is to combine specifically
Preferred embodiment further detailed description of the utility model, it is impossible to regard as specific implementation of the present utility model only
It is confined to these explanations.For the person of ordinary skill of the art, without departing from the concept of the premise utility, also
Some simple deductions or replacement can be made, protection domain of the present utility model should be all considered as belonging to.
As shown in figure 1, the utility model includes gas injection system, three parts of injection system and sample system, the gas injection
System and injection system are connected by triple valve 5 with sample system.
Wherein described gas injection system includes the gas cylinder 1 being sequentially connected, dropping valve 2, check valve 3 and connects therein
Pipeline.Gas cylinder 1 provides source of the gas and pressure for system；Dropping valve 2 is connected with gas cylinder 1, for adjust bleed pressure to
Pressure needed for experiment；Check valve 3 connects dropping valve 2, it is ensured that gas unidirectional flows, and prevents too high generation of back pressure from flowing back.
The injection system includes ball valve 4 17, ball valve 5 18, online-emulsification instrument 19, screw pump 20, ball valve 6 21, ball valve
7 22, oil tank 23 and water-bath 24.The water-bath 24 is connected with the outer layer chuck of oil tank 23, can heating in crude oil temperature to needed for testing；
Oil tank 23 is provided with electric mixer, and water-oil emulsion can be stirred.The lower section of oil tank 23 is provided with ball valve 7 22, for oil tank
The discharge of liquid in 23.Screw pump 20 drives water-oil emulsion flowing, and online-emulsification instrument 19 can realize the online-emulsification of profit.Institute
State the rear side of online-emulsification instrument 19 and return line is set, be connected with oil tank 23, forming minor loop carries out local circulation flowing, can prepare
Water-oil emulsion.
The sample system includes atmospheric valve 4, triple valve 5, ball valve 1, ball valve 27, ball valve 38, clamping device 9, pendulum
Line pin gear speed reducer 10, motor 11, piston cylinder 12, gate valve 1, gate valve 2 14, graduated cylinder 15, manually-actuated metering pump 16.Wherein piston
Piston is provided with cylinder 12, be can move freely, its top is first compartment, and equipped with dissolved gas crude oil, bottom is second compartment, is equipped with
Water.Pressure sensor, temperature sensor are provided with the first compartment of piston cylinder 12, for monitoring dissolved gas crude oil real-time pressure with temperature
Degree.The right side of piston cylinder 12 sets three microchannel gas injection pipelines, with reference to top gas injection pipeline, using triple valve 5, ball valve one 6, ball
Valve 27, the control gas circulation of ball valve 38, carry out multi-faceted gas injection, increase gas liquid interfacial area, and acceleration gas is in crude oil
Dissolving.The bottom of piston cylinder 12 is connected by gate valve 2 14 with manually-actuated metering pump 16, and manually water is pumped into piston by measuring pump 16
Cylinder bottom, can adjust dissolved gas crude oil pressure in cylinder.Stainless steel heating mantle is provided with outside piston cylinder 12 in cylinder external heat, form is
Loose-leaf open-type, heating-up temperature sets controlling value by temperature controller.Piston cylinder 12 is clamped device 9 and fixes, and motor 11 provides power,
Cycloidal planetary gear speed reducer 10 carries out rotating speed control, piston cylinder 12 is continuously rotated by linkage and clamping device 9, carries out nothing
Shearing rotates molten gas, shortens molten gas equilibration time.The top of piston cylinder 12 is provided with atmospheric valve, is vented for being vented.Under piston cylinder 12
Portion is provided with gate valve 1, can carry out pressure release draining.The bottom of gate valve 1 is provided with graduated cylinder 15, and the volume of water is discharged by measuring pressure release
To calculate the volume of gas.
The utility model specific operation process is described as follows：
The preparation of water-oil emulsion：As shown in figure 1, crude oil injects in oil tank 23 by a certain percentage with water, water-bath 24 is circulated
Hot water, oil-water mixture is to experimental temperature in heated tank 23, while the top motor stirring oil water mixture of oil tank 23 is opened, when
When temperature reaches experimental temperature, open ball valve 6 21, ball valve 5 18, close ball valve 7 22, ball valve 4 17, open screw pump 20 with
Online-emulsification instrument 19 circulates oil-water mixture and carries out online-emulsification, until oil-water emulsion is completed.
It is prepared by dissolved gas crude oil：Piston is placed into the bottom of piston cylinder 12 using manually-actuated metering pump 16, is closed in injection system
Ball valve 5 18, ball valve 7 22, open ball valve 4 17, ball valve 6 21, the top atmospheric valve 4 of piston cylinder 12 are opened, using screw pump 20
Inject a certain amount of oil-water mixture.All valves are closed, atmospheric valve 4, gate valve 2 14 is opened, is pushed up using manually-actuated metering pump
Piston, until atmospheric valve 4 in there is liquid to occur, piston cylinder volume and pump into water volume difference as injection flow.Three-way valve 5
It is connected with gas injection system, opens gas cylinder 1, to a certain amount of gas is injected in piston cylinder 12, manually-actuated metering pump 16 is to piston cylinder
12 bottoms injection water is slow to pressurize and rotates molten gas.With in cylinder, first compartment volume diminishes（Increase pressure）, first compartment
Pressure is gradually reduced stabilization after being mutated increase, now thinks not up to saturation state；When first compartment volume diminishes in cylinder, pressure
No longer decline after power increase, think that former oil soluble gas are completed, reach saturation state, record temperature, pressure now.
Solubility is measured：After the completion of prepared by dissolved gas crude oil, all valves are closed, opening gate valve 1 carries out slow pressure release.
After pressure is reduced to normal pressure in piston cylinder 12, closing gate valve 1 measures displacement of volume, as dissolved gas using graduated cylinder 15
Volume, the solubility under this temperature, pressure is calculated with reference to injection flow.Changing test temperature, pressure after being measured carries out next group
Experiment.
To sum up, dissolved gas crude oil is prepared with molten gas is rotated by the distribution gas injection of porous microchannel, both accelerates vapor liquid equilibrium
Speed, turn avoid destruction of the shear action of leaf oar stirring to dissolved gas crude oil, and manually-actuated metering pump can realize pressure with piston
Regulate and control the preparation with single-phase dissolved gas crude oil, dissolved using gas of the piston cylinder under drainage measurement different experiments temperature, pressure
Degree, device have integrated property, simplification, flexibility, measurement it is accurate, with wide applicability.
Claims (8)
1. a kind of dissolved gas crude oil is prepared and solubility measurement apparatus, it is characterised in that the device includes gas injection system, injection system
With three parts of sample system, the gas injection system and injection system are connected by triple valve with sample system；The gas injection system
System includes gas cylinder, dropping valve, check-valves and connecting line successively, and gas cylinder provides source of the gas, and dropping valve is used to control reality
Pressure is tested, check-valves prevents gas backstreaming；The injection system include be sequentially connected oil tank, screw pump, online-emulsification instrument and
Connecting line；The sample system includes piston cylinder, graduated cylinder and manually-actuated metering pump, is provided with what be can move freely in the piston cylinder
Piston, two mutual disconnected compartments are divided into by piston cylinder；The first compartment of the piston cylinder is equipped with molten gas viscous crude, by upper
The triple valve of side is connected with gas injection, injection system；The second compartment of the piston cylinder is equipped with water, and lower section is by gate valve and meter manually
Amount pump connection, can carry out pressure fine setting；The second compartment lower section of the piston cylinder is provided with draining valve, and draining valve bottom is provided with one
Graduated cylinder, realizes surveying molten tolerance from draining by pressure release deflation draining.
2. measurement apparatus according to claim 1, it is characterised in that：The clamped device of the piston cylinder is fixed and connects pendulum
Line pin gear speed reducer and motor are realized rotating molten gas.
3. measurement apparatus according to claim 1, it is characterised in that：Piston cylinder side wall is provided with three micro-channel tubes
Line, realizes distributed gas injection, accelerates gas dissolving.
4. measurement apparatus according to claim 1, it is characterised in that：The piston cylinder top is provided with atmospheric valve.
5. measurement apparatus according to claim 1, it is characterised in that：Online-emulsification instrument rear side set return line with
Oil tank is connected, for preparing water-oil emulsion.
6. measurement apparatus according to claim 1, it is characterised in that：The oil tank lower section is additionally provided with blowoff valve.
7. measurement apparatus according to claim 1, it is characterised in that：The oil tank top is provided with electric mixer.
8. measurement apparatus according to claim 1, it is characterised in that：Outer layer chuck is provided with outside the oil tank, by water-bath
Circulating hot water control heating crude oil temperature is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621351325.5U CN206208627U (en) | 2016-12-10 | 2016-12-10 | A kind of dissolved gas crude oil is prepared and solubility measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621351325.5U CN206208627U (en) | 2016-12-10 | 2016-12-10 | A kind of dissolved gas crude oil is prepared and solubility measurement apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN206208627U true CN206208627U (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621351325.5U Expired - Fee Related CN206208627U (en) | 2016-12-10 | 2016-12-10 | A kind of dissolved gas crude oil is prepared and solubility measurement apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195717A (en) * | 2017-12-07 | 2018-06-22 | 浙江海洋大学 | A kind of simulation oil reservoir full-scale condition polymer viscosity changeable device and method |
| CN110231253A (en) * | 2019-05-09 | 2019-09-13 | 西南石油大学 | A kind of CO2The experimental test procedures of dissolution are competed in oil mixing with water system |
| CN111318200A (en) * | 2020-02-26 | 2020-06-23 | 西南石油大学 | Two-fluid mixing and displacement integrated device and use method thereof |
| 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 |
-
2016
- 2016-12-10 CN CN201621351325.5U patent/CN206208627U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195717A (en) * | 2017-12-07 | 2018-06-22 | 浙江海洋大学 | A kind of simulation oil reservoir full-scale condition polymer viscosity changeable device and method |
| CN110231253A (en) * | 2019-05-09 | 2019-09-13 | 西南石油大学 | A kind of CO2The experimental test procedures of dissolution are competed in oil mixing with water system |
| CN110231253B (en) * | 2019-05-09 | 2021-08-24 | 西南石油大学 | CO (carbon monoxide)2Experimental test method for competitive dissolution in oil-water mixed system |
| CN111318200A (en) * | 2020-02-26 | 2020-06-23 | 西南石油大学 | Two-fluid mixing and displacement integrated device and use method thereof |
| 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 |
| CN114414779B (en) * | 2022-01-21 | 2023-08-01 | 西南石油大学 | High-pressure gas-dissolving waxy crude oil solubility, viscosity and wax precipitation process measuring device |
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Granted publication date: 20170531 Termination date: 20171210 |