CN108318520A - Downhole radio-frequency heats simulation test device - Google Patents
Downhole radio-frequency heats simulation test device Download PDFInfo
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- CN108318520A CN108318520A CN201810271410.8A CN201810271410A CN108318520A CN 108318520 A CN108318520 A CN 108318520A CN 201810271410 A CN201810271410 A CN 201810271410A CN 108318520 A CN108318520 A CN 108318520A
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- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000004088 simulation Methods 0.000 title claims abstract description 17
- 239000002904 solvent Substances 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 56
- 239000010779 crude oil Substances 0.000 claims description 24
- 239000003921 oil Substances 0.000 claims description 23
- 239000004576 sand Substances 0.000 claims description 19
- 239000000377 silicon dioxide Substances 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 45
- 238000000034 method Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 238000002474 experimental method Methods 0.000 description 9
- 238000011084 recovery Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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Abstract
The invention discloses a kind of downhole radio-frequencies to heat simulation test device, including：Solvent bottle, hydraulic pump, pressure gauge, container, thermocouple, data acquisition device, artificial reservoir, pressure sensor, radio-frequency antenna, outflow tube and frequency conversion tank.Wherein, artificial reservoir is set in container, hydraulic pump suction side connects solvent bottle, the drain side of hydraulic pump is connected to one end of container, pressure gauge is connect with hydraulic pump, the other end of container is connected to outflow tube, radio-frequency antenna is placed in inside artificial reservoir and is connect with frequency conversion tank, thermocouple is mounted on inside artificial reservoir with pressure sensor and is connect with data acquisition device, for the temperature and pressure inside collected artificial reservoir to be transmitted to data acquisition device, therefore, the feasibility of the influence factor and assessment radio frequency heating method of radio frequency heating reservoir of oil and gas effect in terms of oil thermal production can be studied by the device, to which the application for radio frequency heating method at oilfield exploitation scene provides significant guidance.
Description
Technical field
The present invention relates to reservoir of oil and gas thermal recovery technical field of research more particularly to a kind of downhole radio-frequency to heat simulation test
Device.
Background technology
Currently, due in world wide oil price asked still in sluggish state, traditional the inefficient of reservoir of oil and gas thermal recovery technology
Topic is gradually exposed.So domestic and foreign scholars stepping up to research and develop novel thermal recovery technology with reduce reservoir of oil and gas exploitation at
This simultaneously meets world energy sources demand.
It is well known that the high viscosity property of viscous crude, pitch is (oil recovering an important factor for hindering oil recovery factor to improve
Rate refers to producing the percentage of oil in-place).Since there is the viscosity temperature of oil sensibility, the raising of temperature can drop
Low viscosity of crude, so just increasing the yield of oil using different conventional thermal recovery technologies both at home and abroad, these technologies include mainly
Carbon dioxide injection, chemistry injection, water filling and steam injection etc..Although these technologies are widely used, these technologies
Using can be limited by some conditions, for example, for heating technique level, traditional steam thermal recovery technology is to certain types
The petroleum resources (such as high clay content, shale, deep reservoirs etc.) of reservoir can not be exploited effectively, and heating process needs largely
Water and steam.And other thermal recovery technologies can have some environmental pollutions.
The one kind of radio frequency heating method as electrical heating method has huge application advantage.Be mainly manifested in its heat loss compared with
Small, the efficiency of heating surface is high, the exploitation that is suitable for special oil reservoir (thin, fractured reservoir), heating speed are fast and environmental protection etc. is many excellent
Point is kept away in addition, another benefit of radio frequency heating method, which is the electric energy of output, can be applied directly to the reservoir area for needing to heat
Dissipation of the additional energy in non-reservoir area is exempted from.But present case is foreign countries heats oil gas reservoir to radio frequency heating method
The theoretical research of layer is more and experimental study is less, and China still locates research of the radio frequency heating method in terms of recovery of subterranean oil
In space state.
Therefore, a kind of downhole radio-frequency heating simulation test device how is designed to penetrate come the effect and assessment for studying radio frequency heating
The technical issues of feasibility of frequency heating is this field urgent need to resolve.
Invention content
In view of this, an embodiment of the present invention provides a kind of downhole radio-frequencies to heat simulation test device, for studying radio frequency
The feasibility of the effect and assessment radio frequency heating of heating.
Therefore, the embodiment of the present invention provides a kind of downhole radio-frequency heating simulation test device, including：
Solvent bottle, pressure gauge, container, thermocouple, data acquisition device, artificial reservoir, pressure sensor, is penetrated hydraulic pump
Frequency antenna, outflow tube and frequency conversion tank；Wherein,
The artificial reservoir is set in the container, and the hydraulic pump suction side connects the solvent bottle, the hydraulic pressure
The drain side of pump is connected to one end of the container so that the solvent in the solvent bottle be pumped into it is described artificial in the container
Reservoir；
The pressure gauge is connect with the hydraulic pump, the pressure applied for obtaining the hydraulic pump；
The other end of the container is connected to the outflow tube, is precipitated with exporting the artificial reservoir by the outflow tube
Crude oil；
The radio-frequency antenna is placed in inside the artificial reservoir and is connect with the frequency conversion tank, with to the artificial reservoir into
Row heating；
The thermocouple and the pressure sensor be mounted on inside the artificial reservoir and with the data acquisition device
Connection, for the temperature and pressure inside the collected artificial reservoir to be transmitted to the data acquisition device.
In one possible implementation, in above-mentioned apparatus provided in an embodiment of the present invention, the artificial reservoir packet
It includes：Silica sand and the crude oil being pumped into the silica sand.
In one possible implementation, in above-mentioned apparatus provided in an embodiment of the present invention, the container includes storage
Layer shell and the hollow tube being arranged in the shell；Wherein,
The hollow tube, for housing the radio-frequency antenna；
The artificial reservoir is filled between the outside of the hollow tube and the inner wall of the reservoir shell.
In one possible implementation, in above-mentioned apparatus provided in an embodiment of the present invention, the hollow tube runs through
It is installed at the axle center of the artificial reservoir, the length of the hollow tube is identical as the length of the container.
In one possible implementation, in above-mentioned apparatus provided in an embodiment of the present invention, the radio-frequency antenna, packet
It includes：Connection plug, collets, upper antenna arm, supply lines L, supply lines N, connector and lower antenna arm；
One end of the upper antenna arm is connect with the connection plug, and the other end passes through the connection with the lower antenna arm
Device connects；
One end of the supply lines L is arranged in the connection plug, and the supply lines L is connect with the upper antenna arm；
The collets are mounted in the connection plug, and one end of the supply lines N is arranged in the connection plug,
The other end of the supply lines N, which passes through, to be connect inside the collets and the upper antenna arm with the lower antenna arm.
In one possible implementation, in above-mentioned apparatus provided in an embodiment of the present invention, the one of the supply lines L
End is welded on the connection plug.
In one possible implementation, in above-mentioned apparatus provided in an embodiment of the present invention, the upper antenna arm with
The lower antenna arm is cylinder.
In one possible implementation, in above-mentioned apparatus provided in an embodiment of the present invention, the upper antenna arm is
Hollow metal tube, the lower antenna arm are solid metal pipe.
In one possible implementation, in above-mentioned apparatus provided in an embodiment of the present invention, the lower antenna arm
Outer diameter is less than the outer diameter of the upper antenna arm.
In one possible implementation, further include valve and liquid in above-mentioned apparatus provided in an embodiment of the present invention
Press tank；
The valve is connected between the drain side of the hydraulic pump and the hydraulic tank, will for controlling the hydraulic pump
Solvent in the solvent bottle is pumped into the hydraulic tank；
The output end of the hydraulic tank is connected to one end of the container.
Downhole radio-frequency provided in an embodiment of the present invention heats simulation test device, including：Solvent bottle, hydraulic pump, pressure gauge,
Container, thermocouple, data acquisition device, artificial reservoir, pressure sensor, radio-frequency antenna, outflow tube and frequency conversion tank.Wherein, people
Reservoir to be made to be set in container, hydraulic pump suction side connects solvent bottle, and the drain side of hydraulic pump is connected to one end of container, so that
Solvent in solvent bottle is pumped into the artificial reservoir in container, and pressure gauge is connect with hydraulic pump, the pressure for obtaining hydraulic pump application
The other end of power, container is connected to outflow tube, and to export the crude oil that artificial reservoir is precipitated by outflow tube, radio-frequency antenna is placed in people
It makes inside reservoir and is connect with frequency conversion tank, to be heated to artificial reservoir, thermocouple is mounted on artificial storage with pressure sensor
Layer is internal and is connect with data acquisition device, is adopted for the temperature and pressure inside collected artificial reservoir to be transmitted to data
Acquisition means, with the present apparatus, by changing correlation test condition, such as the heating frequency of radio-frequency antenna, power and displacement solution
Pump-in pressure etc. can measure the temperature, pressure of artificial reservoir and the volume of the corresponding crude oil being precipitated under different condition, therefore,
The influence factor of radio frequency heating reservoir of oil and gas effect can be studied by the device and assesses radio frequency heating method in oil thermal production side
The feasibility in face, to which the application for radio frequency heating method at oilfield exploitation scene provides significant guidance.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments, for those of ordinary skill in the art, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram that downhole radio-frequency provided in an embodiment of the present invention heats simulation test device；
Fig. 2 is the structural schematic diagram of radio-frequency antenna provided in an embodiment of the present invention.
Reference numeral：
1- solvent bottles；2- hydraulic pumps；3- pressure gauges；
4- valves；5- hydraulic tanks；6- hollow tubes；
7- thermocouples；8- data acquisition devices；The artificial reservoirs of 9-；
10- pressure sensors；11- silica sands；12- radio-frequency antennas；
13- reservoir shells；14- outflow tubes；15- volumetric flasks；
16- frequency conversion tanks；121- connection plugs；122- collets；
The upper antenna arms of 123-；124- supply lines L；125- supply lines N；
126- connectors；Antenna arm under 127-；A- containers.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The every other reality obtained based on the embodiments of the present invention
Example is applied, shall fall within the protection scope of the present invention.
For convenience of explanation, the size for the different layer and region that zoomed in or out, so size as shown in the figure and ratio
Actual size might not be represented, does not also reflect the proportionate relationship of size.
The embodiment of the present invention is designed to provide a kind of downhole radio-frequency heating simulation test device to study radio frequency heating
Feasibility of the influence factor and assessment radio frequency heating method of reservoir of oil and gas effect in terms of oil thermal production, exists for radio frequency heating method
The application at oilfield exploitation scene provides significant guidance.
Fig. 1 is the structural schematic diagram that downhole radio-frequency provided in an embodiment of the present invention heats simulation test device, such as Fig. 1 institutes
Show, which includes：
Solvent bottle 1, hydraulic pump 2, pressure gauge 3, container A, thermocouple 7, data acquisition device 8, artificial reservoir 9, pressure pass
Sensor 10, radio-frequency antenna 12, outflow tube 14 and frequency conversion tank 16；Wherein,
Artificial reservoir 9 is set in container A, and the suction side of hydraulic pump 2 connects solvent bottle 1, the drain side of hydraulic pump 2 and appearance
One end of device A is connected to, so that the solvent in solvent bottle 1 is pumped into the artificial reservoir 9 in container A；
Pressure gauge 3 is connect with hydraulic pump 2, the pressure for obtaining the application of hydraulic pump 2；
The other end of container A is connected to outflow tube 14, to export the crude oil of the precipitation of artificial reservoir 9 by outflow tube 14；
Radio-frequency antenna 12 is placed in 9 inside of artificial reservoir and is connect with frequency conversion tank 16, to be heated to artificial reservoir 9；
Thermocouple 7 is mounted on 9 inside of artificial reservoir with pressure sensor 10 and is connect with data acquisition device 8, and being used for will
Temperature and pressure inside collected artificial reservoir 9 is transmitted to data acquisition device 8.
Specifically, solvent bottle 1, for holding displacement solvent, such as carbon tetrachloride, kerosene, crude oil；Hydraulic pump 2, being used for will
Solvent sucking in solvent bottle 1, provides certain pump pressure；Pressure gauge 3, for carrying out real-time display to hydraulic pressure value；Thermocouple 7,
For being acquired to the temperature in artificial reservoir 9；Artificial reservoir 9 is the substance heated by radio-frequency antenna 12, is entirely to test
Core；Pressure sensor 10, for measuring the pressure data in artificial reservoir；Radio-frequency antenna 12 is transmitting high-frequency electrical
The device of magnetic wave is the heat source for being heated artificial reservoir 9；Data acquisition device 8 is used for thermocouple 7 and pressure sensor 10
Current signal store and respective handling；Outflow tube 14, for leading the crude oil that displacement comes out out of artificial reservoir 9
Draw；Frequency conversion tank 16, for being powered to radio-frequency antenna 12 and realizing the variation of heating signal power and frequency during experiment.
In practical applications, before the test is conducted, it needs to be attached above-mentioned each component as required.
Specifically, as shown in Figure 1, artificial reservoir 9 is set in container A, the suction side of hydraulic pump 2 connects solvent bottle 1, liquid
The drain side of press pump 2 is connected to one end of container A, so that the solvent in solvent bottle 1 is pumped into the artificial reservoir 9 in container A, to reach
The effect of displacement is carried out to the crude oil in artificial reservoir 9 to the displacement solution in solvent bottle 1；Pressure gauge 3 is connect with hydraulic pump 2,
Pressure for obtaining the application of hydraulic pump 2 so that testing crew can be monitored by pressure gauge 3 and record hydraulic pressure during experiment
Pump the variation of 2 pump-in pressures；The other end of container A is connected to outflow tube 14, is precipitated with exporting artificial reservoir 9 by outflow tube 14
Crude oil, in practical application, a volumetric flask 15 can be configured, for holding and measuring the volume that crude oil is precipitated；So testing
It can change the displacement pressure of displacement solution by changing the pump-in pressure of hydraulic pump 2 in the process, it is constant in reservoir temperature
In the case of, to study the volume of pressure and the corresponding crude oil being precipitated in the artificial reservoir 9 under different displacement pressure effects；
Radio-frequency antenna 12 is placed in 9 inside of artificial reservoir and is connect with frequency conversion tank 16, to be heated to artificial reservoir 9, penetrates
The RF energy that frequency antenna 12 emits is absorbed by artificial reservoir 9, so as to heat artificial reservoir 9, improves artificial reservoir 9
Temperature is precipitated the influence of crude oil volume under certain displacement pressure to study temperature to artificial reservoir 9, also may be used in practical application
More radio-frequency antennas 12 are arranged while testing, explain, do not limit at this；
Thermocouple 7 is mounted on 9 inside of artificial reservoir with pressure sensor 10 and is connect with data acquisition device 8, and being used for will
Temperature and pressure inside collected artificial reservoir 9 is transmitted to data acquisition device 8, in practical application, as shown in Figure 1, can
Arrange multiple thermocouples 7 artificial reservoir 9 different parts, to carry out data acquisition and being transmitted to data to the temperature of different parts
Harvester 8 can arrange that one or more pressure sensors 10 carry out constantly monitoring to the pressure inside artificial reservoir 9 and will press
Force data is transmitted to data acquisition device 8, and data acquisition device 8 deposits the current signal of thermocouple 7 and pressure sensor 10
Corresponding physical parameter value is stored up and is converted into, in order to the data analysis after contrast test.
Downhole radio-frequency provided in this embodiment heats simulation test device, including：Solvent bottle, hydraulic pump, pressure gauge, appearance
Device, thermocouple, data acquisition device, artificial reservoir, pressure sensor, radio-frequency antenna, outflow tube and frequency conversion tank.Wherein, artificial
Reservoir is set in container, and hydraulic pump suction side connects solvent bottle, and the drain side of hydraulic pump is connected to one end of container, so that molten
Solvent in agent bottle is pumped into the artificial reservoir in container, and pressure gauge is connect with hydraulic pump, the pressure for obtaining hydraulic pump application,
The other end of container is connected to outflow tube, and to export the crude oil that artificial reservoir is precipitated by outflow tube, radio-frequency antenna is placed in artificial
It is connect inside reservoir and with frequency conversion tank, to be heated to artificial reservoir, thermocouple is mounted on artificial reservoir with pressure sensor
Inside is simultaneously connect with data acquisition device, for the temperature and pressure inside collected artificial reservoir to be transmitted to data acquisition
Device, with the present apparatus, by changing correlation test condition, such as the heating frequency of radio-frequency antenna, the pump of power and displacement solution
Enter pressure etc., the temperature, pressure of artificial reservoir and the volume of the corresponding crude oil being precipitated under different condition can be measured and therefore led to
The influence factor of radio frequency heating reservoir of oil and gas effect can be studied and assess radio frequency heating method in terms of oil thermal production by crossing the device
Feasibility, to which application for radio frequency heating method at oilfield exploitation scene provides significant guidance.
In another embodiment, artificial reservoir 9 includes：Silica sand 11 and the crude oil being pumped into silica sand.
In practical application, before the test is conducted, the preparation for carrying out artificial reservoir 9 is needed, specifically, as shown in Figure 1, people
It makes the crude oil that reservoir 9 is pumped by silica sand 11 and according to certain pressure in silica sand to be made, different mesh can be needed according to actual tests
Several silica sands can also be that the silica sands of different meshes is combined according to a certain percentage.
In the present embodiment, artificial reservoir made of the crude oil in silica sand is pumped into silica sand 11 and according to certain pressure
9, the artificial reservoir similar to actual reservoir state is provided for radio frequency heating simulation test, is established for the accuracy of the test result
Basis is determined.
In another embodiment, container A includes the hollow tube 6 of reservoir shell 13 and setting inside the shell；Wherein,
Hollow tube 6, for housing radio-frequency antenna 12；
Artificial reservoir 9 is filled between the outside and the inner wall of reservoir shell 13 of hollow tube 6.
In practical application, specifically, container A is made of the hollow tube 6 of reservoir shell 13 and setting inside the shell, preferably
, the material of reservoir shell 13 can be polyvinyl chloride.Optionally, the material of hollow tube 6 can be polytetrafluoroethylene (PTFE), can also be
The material of other low-ks either low conductivity, does not limit herein.It is noted that hollow tube 6 is for holding
Radio-frequency antenna 12 is set, fills artificial reservoir 9 between the outside and the inner wall of reservoir shell 13 of hollow tube 6, that is to say, that artificial
Reservoir 9 is wrapped in container A.
In the present embodiment, it is used for housing radio-frequency antenna 12 by the way that hollow tube 6 is arranged in container A, thus by artificial reservoir 9
It is separated with radio-frequency antenna 12, to protect radio-frequency antenna 12, prevents pollution caused by the components such as crude oil, silica sand in artificial reservoir 9,
It avoids radio-frequency antenna 12 and the failures such as short circuit occurs.
Further, hollow tube 6 runs through and is installed at the axle center of artificial reservoir 9, the length of hollow tube 6 and the length of container A
It spends identical.
Specifically, hollow tube 6 is through being installed at the axle center of artificial reservoir 9, so that each position of artificial reservoir 9 receives
The RF energy that sends out of radio-frequency antenna 12 evenly.The length of hollow tube 6 is identical as the length of container A, in order to install length
Maximized radio-frequency antenna is spent, to reach the maximization of RF energy threshold value, is conducive to the maximization of trial stretch.
In another embodiment, as shown in Fig. 2, radio-frequency antenna 12, including：Connection plug 121, collets 122, upper antenna arm
123, supply lines L124, supply lines N125, connector 126 and lower antenna arm 127；
One end of upper antenna arm 123 is connect with connection plug 121, and the other end is connected with lower antenna arm 127 by connector 126
It connects；
One end of supply lines L124 is arranged in connection plug 121, and supply lines L124 is connect with upper antenna arm 123；
Collets 122 are mounted in connection plug 121, and one end of supply lines N125 is arranged in connection plug 121, power supply
The other end of line N125 passes through collets 122 and 123 inside of upper antenna arm to be connect with lower antenna arm 127.
Specifically, radio-frequency antenna 12 is the important component of entire radio frequency heating simulation test device, it mainly emits high
Frequency electromagnetic waves are just converted into thermal energy when in Electromagnetic Wave Propagation to reservoir, are fast and efficiently heated to reservoir.It is by
Connection plug 121, collets 122, upper antenna arm 123, supply lines L124, supply lines N125, connector 126 and lower antenna arm
127 are constituted, and one end of upper antenna arm 123 is connect with connection plug 121, and the other end is connected with lower antenna arm 127 by connector 126
It connects, so as to flow out gap between upper antenna arm 123 and lower antenna arm 127；One end of supply lines L124 is arranged in connection plug 121
Interior, supply lines L124 is connect with upper antenna arm 123, to give upper antenna arm 123 to power；Collets 122 are mounted on connection plug 121
Interior, one end of supply lines N125 is arranged in connection plug 121, and the other end of supply lines N125 passes through collets 122 and heaven
123 inside of line arm is connect with lower antenna arm 127, and to give lower antenna arm 127 to power, while collets 122 can prevent supply lines
With supply lines N125 short circuit occurs for L124.
Further, one end of supply lines L124 is welded on connection plug 121.
Specifically, one end of supply lines L124 is welded on connection plug 121, so that supply lines L124 and connection plug
Connection electric conductivity between 121 is more preferable, more reliable.
Further, upper antenna arm 123 and lower antenna arm 127 are cylinder.
Specifically, antenna arm 123 and lower antenna arm 127 are cylinder in setting, so that the radio frequency that radio-frequency antenna 12 is sent out
Evenly, while cylinder and surrounding objects friction coefficient are small, are not easy to be damaged and be easily installed for energy.
Further, upper antenna arm 123 is hollow metal tube, and lower antenna arm 127 is solid metal pipe.
Specifically, upper antenna arm 123 is hollow metal tube, and lower antenna arm 127 is solid metal pipe, is conducive to radio-frequency antenna
12 send high-frequency radiofrequency signal, improve the emission effciency of radio-frequency antenna 12.
Further, the outer diameter of lower antenna arm 127 is less than the outer diameter of upper antenna arm 123.
Specifically, the outer diameter that lower antenna arm 127 is arranged is less than the outer diameter of upper antenna arm 123, so that after experiment finishes, receipts
Receive radio-frequency antenna 12 when, lower antenna arm 127 can be placed in antenna arm 123, to protect it from being damaged.
In another embodiment, above-mentioned apparatus further includes valve 4 and hydraulic tank 5；
Valve 4 is connected between the drain side of hydraulic pump 2 and hydraulic tank 5, will be in solvent bottle 1 for controlling hydraulic pump 2
Solvent is pumped into hydraulic tank 5；
The output end of hydraulic tank 5 is connected to one end of container A.
In practical application, specifically, above-mentioned experimental rig further includes valve 4 and hydraulic tank 5,；Valve 4 is connected to hydraulic pump
Between 2 drain side and hydraulic tank 5, the pipeline before and after hydraulic pump 2 is used to open or closed to control hydraulic pump 2 by solvent bottle 1
In solvent be pumped into hydraulic tank 5；The output end of hydraulic tank 5 is connected to one end of container A so that stored in hydraulic tank 5 by
In the displacement solution input pod A that hydraulic pump is pumped into.By the way that valve 4 and hydraulic tank 5 is arranged, can preferably to experiment process into
Row accurately controls.
Above-mentioned downhole radio-frequency heating simulation test device provided by the invention is carried out with a specific embodiment below
Detailed description.
The first step prepares artificial reservoir 9.Preferably, prepare the silica sand 11 of certain mass and with a concentration of 10% hydrochloric acid
Solution rinses, and then uses drying machine dry out cleaning solution more than room temperature and in 100 DEG C of temperature below.Then by a length of 1m,
Internal diameter is that the reservoir shell 13 of 40mm is disposed vertically, and carries out oil processing to its inner surface, finally coats epoxy in its inner surface
Resin glue, it is therefore an objective to silica sand is sticked on its inner surface, to increase the frictional force to artificial reservoir 9, prevented in injection fluid
When artificial reservoir 9 landing.Then, hollow tube 6 is placed at the axle center of reservoir shell 13, and fixed, then silica sand 11
It is filled in the annular space that reservoir shell 13 is formed with hollow tube 6, during back-up sand, by tapping reservoir shell 13 with metal object
Side realize being uniformly distributed for wherein silica sand 11 as far as possible so that experimental result is more accurate, finally, diameter is less than reservoir
The metal tube of 13 internal diameter of shell is placed on the upper end of silica sand 11, and power appropriate is used in combination to press down, due to metal tube gravity and inertia force
Effect, finally so that 11 model of silica sand be compacted.Finally, it opens hydraulic pump and the crude oil in hydraulic tank is injected into sand mo(u)ld type
In, pump-in pressure is maintained at 1MPa or so, until reaching the maximum amount of being pumped into, stops pump, finally that artificial reservoir 9 static 24 is small
When, complete the preparation of artificial reservoir 9.
Second step, installation radio-frequency antenna 12 and sealing container A.Specifically, after being sealed to container A both ends, by radio frequency
Antenna 12 is mounted in hollow tube 6, is sealed 12 one end of radio-frequency antenna with pipe fitting.Finally connect respectively at container A both ends
Pick out flow tube 14 and hydraulic tank 5.
Third walks, and carries out the injection of displacement solvent and the experiment of radio frequency heating reservoir.Radio-frequency antenna 12 is radio-frequency radiation source, is added
Thermal power is adjustable between 2-6kW, and the frequency range of frequency conversion tank 16 is adjustable between 100-200MHz.
It carries out radio frequency heating reservoir experiment and passes through change when the pump-in pressure of hydraulic pump 2 and constant displacement solution composition
The heating frequency and power of radio-frequency antenna 12 observes heating effect.The 14 connection capacity bottle 15 of outflow tube of container A, for measuring
The crude oil volume that displacement goes out；It is placed in temperature data of the thermocouple 7 to 9 different location of artificial reservoir of 9 different location of artificial reservoir
It is recorded, in addition, the pressure sensor 10 in artificial reservoir 9 monitors the pressure in artificial reservoir 9 in real time.
4th step, according to experiment earlier set condition (such as pump-in pressure of heating frequency, power and displacement solution),
Data acquisition device 8 is stored and is converted into the crude oil that displacement goes out to the temperature data, the pressure data that are acquired in experimentation
The corresponding physical parameter value of volume；After changing experiment condition, then carry out contrast experiment；Final analyzing influence radio frequency heating oil gas
The factor (reservoir property, pressure, radio-frequency power and frequency) of reservoir effect.
Downhole radio-frequency provided in this embodiment heats simulation test device, including：Solvent bottle, hydraulic pump, pressure gauge, appearance
Device, thermocouple, data acquisition device, artificial reservoir, pressure sensor, radio-frequency antenna, outflow tube and frequency conversion tank.Wherein, artificial
Reservoir is set in container, and hydraulic pump suction side connects solvent bottle, and the drain side of hydraulic pump is connected to one end of container, so that molten
Solvent in agent bottle is pumped into the artificial reservoir in container, and pressure gauge is connect with hydraulic pump, the pressure for obtaining hydraulic pump application,
The other end of container is connected to outflow tube, and to export the crude oil that artificial reservoir is precipitated by outflow tube, radio-frequency antenna is placed in artificial
It is connect inside reservoir and with frequency conversion tank, to be heated to artificial reservoir, thermocouple is mounted on artificial reservoir with pressure sensor
Inside is simultaneously connect with data acquisition device, for the temperature and pressure inside collected artificial reservoir to be transmitted to data acquisition
Device, with the present apparatus, by changing correlation test condition, such as the heating frequency of radio-frequency antenna, the pump of power and displacement solution
Enter pressure etc., the temperature, pressure of artificial reservoir and the volume of the corresponding crude oil being precipitated under different condition can be measured and therefore led to
The influence factor of radio frequency heating reservoir of oil and gas effect can be studied and assess radio frequency heating method in terms of oil thermal production by crossing the device
Feasibility, to which application for radio frequency heating method at oilfield exploitation scene provides significant guidance.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of downhole radio-frequency heats simulation test device, which is characterized in that including：
Solvent bottle, hydraulic pump, pressure gauge, container, thermocouple, data acquisition device, artificial reservoir, pressure sensor, radio frequency day
Line, outflow tube and frequency conversion tank；Wherein,
The artificial reservoir is set in the container, and the hydraulic pump suction side connects the solvent bottle, the hydraulic pump
Drain side is connected to one end of the container, so that the solvent in the solvent bottle is pumped into the artificial storage in the container
Layer；
The pressure gauge is connect with the hydraulic pump, the pressure applied for obtaining the hydraulic pump；
The other end of the container is connected to the outflow tube, to export the original that the artificial reservoir is precipitated by the outflow tube
Oil；
The radio-frequency antenna is placed in inside the artificial reservoir and is connect with the frequency conversion tank, to add to the artificial reservoir
Heat；
The thermocouple is mounted on inside the artificial reservoir with the pressure sensor and is connect with the data acquisition device,
For the temperature and pressure inside the collected artificial reservoir to be transmitted to the data acquisition device.
2. the apparatus according to claim 1, which is characterized in that the artificial reservoir includes：Silica sand and it is pumped into the silicon
Crude oil in sand.
3. the apparatus according to claim 1, which is characterized in that the container includes reservoir shell and is arranged in the shell
Interior hollow tube；Wherein,
The hollow tube, for housing the radio-frequency antenna；
The artificial reservoir is filled between the outside of the hollow tube and the inner wall of the reservoir shell.
4. device according to claim 3, which is characterized in that the hollow tube runs through the axis for being installed on the artificial reservoir
At the heart, the length of the hollow tube is identical as the length of the container.
5. the apparatus according to claim 1, which is characterized in that the radio-frequency antenna, including：Connection plug, collets, on
Antenna arm, supply lines L, supply lines N, connector and lower antenna arm；
One end of the upper antenna arm is connect with the connection plug, and the other end is connected with the lower antenna arm by the connector
It connects；
One end of the supply lines L is arranged in the connection plug, and the supply lines L is connect with the upper antenna arm；
The collets are mounted in the connection plug, and one end of the supply lines N is arranged in the connection plug, described
The other end of supply lines N, which passes through, to be connect inside the collets and the upper antenna arm with the lower antenna arm.
6. device according to claim 5, which is characterized in that one end of the supply lines L is welded on the connection plug
On.
7. device according to claim 5, which is characterized in that the upper antenna arm is cylinder with the lower antenna arm.
8. device according to claim 7, which is characterized in that the upper antenna arm is hollow metal tube, the lower antenna
Arm is solid metal pipe.
9. device according to claim 8, which is characterized in that the outer diameter of the lower antenna arm is less than the upper antenna arm
Outer diameter.
10. the apparatus according to claim 1, which is characterized in that described device further includes valve and hydraulic tank；
The valve is connected between the drain side of the hydraulic pump and the hydraulic tank, will be described for controlling the hydraulic pump
Solvent in solvent bottle is pumped into the hydraulic tank；
The output end of the hydraulic tank is connected to one end of the container.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810271410.8A CN108318520A (en) | 2018-03-29 | 2018-03-29 | Downhole radio-frequency heats simulation test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810271410.8A CN108318520A (en) | 2018-03-29 | 2018-03-29 | Downhole radio-frequency heats simulation test device |
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| CN108318520A true CN108318520A (en) | 2018-07-24 |
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| CN115773107A (en) * | 2023-02-13 | 2023-03-10 | 中国石油大学(北京) | Underground radio frequency heating oil displacement test device for thickened oil recovery |
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