CN212674707U - High-efficient preparation of gas-dissolved crude oil and viscosity measurement device - Google Patents
High-efficient preparation of gas-dissolved crude oil and viscosity measurement device Download PDFInfo
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- CN212674707U CN212674707U CN202021397148.0U CN202021397148U CN212674707U CN 212674707 U CN212674707 U CN 212674707U CN 202021397148 U CN202021397148 U CN 202021397148U CN 212674707 U CN212674707 U CN 212674707U
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Abstract
The utility model discloses a dissolve high-efficient preparation of gas crude oil and viscosity measurement device sets up electric stirrer at the high-pressure batch autoclave top and rotates the stirring, sets up screw pump and gas pump simultaneously, but circulating gas and liquid make its mobile contact, have eliminated the drawback of bottom liquid and the unable contact of gas, make dissolve evenly, and measurement accuracy is high. The double stirring shortens the preparation time of the dissolved crude oil and improves the testing efficiency. For heavy crude oil, the device can be suitable for light crude oil and heavy crude oil by utilizing a screw pump and a gas pump to carry out circulating flow stirring. And a gas sampler and a liquid sampler are arranged in the gas circulation and the liquid circulation, so that the online sampling of gas and liquid is realized. And a falling ball viscometer is arranged, so that the viscosity data of the dissolved gas crude oil can be measured on line. The utility model has the characteristics of be applicable to light crude oil and heavy crude oil, efficiency of software testing is high, dual stirring, online sampling, viscosity on-line measuring, dissolve even, measurement accuracy is high etc.
Description
Technical Field
The utility model belongs to the technical field of dissolve gas crude oil characteristic, especially, relate to a dissolve high-efficient preparation of gas crude oil and viscosity measurement device.
Background
The viscosity of crude oil is a reflection of the internal frictional resistance of the crude oil during flow. The viscosity of the formation crude oil directly affects its seepage within the subsurface pore medium and its ability to flow in the pipe. The method has important practical significance in developing schemes, evaluating oil well productivity, researching seepage mechanisms, gathering and transporting crude oil and the like by knowing the viscosity characteristics of the crude oil in the stratum. The factors influencing the viscosity of crude oil are many, the change of dissolved gas in the crude oil is an important factor causing the viscosity change of the crude oil, and the viscosity reduction effect can be achieved on the crude oil injected gas of an oil reservoir. The related scholars can carry out systematic research on the viscosity-temperature characteristics of the crude oil and the oil-gas mixed liquid within a large gas-oil ratio range by measuring the viscosity of the crude oil and the oil-gas mixed liquid, and provide scientific basis for the flow calculation of the crude oil in the stratum, the shaft and the oil pipeline. Under the condition of gathering and transporting in an oil mining field, in order to improve the economy of a gathering and transporting system and reduce equipment investment and management, well flow products are often directly transported by adopting a mixed transportation pipeline. Under the pressure of pipeline transportation, oil gas or oil gas water multiphase coexist, and the crude oil in the pipeline is usually saturated dissolved gas crude oil with certain light hydrocarbon components dissolved therein. Compared with degassed crude oil, the saturated dissolved gas crude oil has obviously reduced rheological parameters such as wax precipitation point, condensation point, viscosity and the like, and obviously improved low-temperature fluidity, so that the safe operation of pipelines can be realized at lower temperature, the fuel consumption is saved, and heating equipment is reduced. However, because the devices and means for measuring the saturated dissolved gas crude oil are not mature enough, the design and operation of a mine field gathering and transporting system are generally guided according to rheological parameters such as condensation point, viscosity and the like of the degassed crude oil in the mine field gathering and transporting process of most oil fields in China at present. From the analysis, the development of the research work of the preparation of the dissolved gas crude oil and the measurement of the viscosity has important guiding significance for optimizing the economic and safe operation of the gathering and transportation system of the oil field and the mine field and guiding the application of the cold transportation process in the gathering and transportation pipeline.
In order to research the physical characteristics of the dissolved crude oil, Liyuxing provides a preparation and measurement device of the dissolved crude oil (Liyuxing, Zhang Jian, Liman. supercritical CO)2Solubility in thickened oils and volume factor study [ J]Science and technology and engineering, 2013, 13 (1): 53-57.). And (3) heating in a water bath to control the temperature, mixing gas and liquid in the reaction kettle, and calculating the solubility of the gas in the crude oil according to the volume of the gas and the volume of the liquid and a state equation. The method has the main problems that no stirring device completely depends on gas to dissolve in crude oil, so that the gas can only be dissolved on the surface of gas and liquid, and the crude oil at the lower layer cannot dissolve the gas because the crude oil is not in contact with the gas, so that the gas is not uniformly dissolved in the crude oil, and larger experimental errors are brought. Meanwhile, the gas and the liquid are in a static state, so that the gas dissolving speed is low, and the experiment efficiency is poor. Some experimental devices are provided with stirrers, which are improved, but still have the problem of small gas-liquid contact interface, and also cause uneven gas dissolution. Although the dissolution rate is improved, it still takes a significant amount of time to prepare the dissolved crude oil. For light crude oil, the electric stirrer can stir the light crude oil, but for heavy crude oil, the electric stirrer needs a large moment to stir the heavy crude oil, the electric stirrer needs a strong magnetic device, and the magnetic device with high power can affect other surrounding electric power equipment, so the device is not suitable for the heavy crude oil.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims at providing a be applicable to light crude oil and heavy crude oil, efficiency of software testing is high, dual stirring, online sampling, viscosity on-line measuring, dissolve even, measurement accuracy is high dissolve high-efficient preparation of gas crude oil and viscosity measurement device.
The utility model discloses set up electric agitator at the high-pressure batch autoclave top and rotate the stirring, set up screw pump and gas pump simultaneously, circulated gas and liquid make its mobile contact, have eliminated the drawback of the unable contact of bottom liquid with gas, make dissolve evenly, and measurement accuracy is high. The double stirring shortens the preparation time of the dissolved crude oil and improves the testing efficiency. For heavy crude oil, the device can be suitable for light crude oil and heavy crude oil by utilizing a screw pump and a gas pump to carry out circulating flow stirring. And a gas sampler and a liquid sampler are arranged in the gas circulation and the liquid circulation, so that the online sampling of gas and liquid is realized. And a falling ball viscometer is arranged, so that the viscosity data of the dissolved gas crude oil can be measured on line.
The utility model discloses specific technical scheme as follows:
a device for efficiently preparing dissolved crude oil and measuring viscosity of the dissolved crude oil comprises an air bottle, a pressure reducing valve, a needle valve I, a needle valve II, a gas flowmeter, a check valve, a pressure gauge, a thermometer, a high-pressure reaction kettle, a ball valve I, a gas pump, a ball valve II, a gas sampler, a ball valve III, a ball valve IV, a ball valve V, a ball valve VI, a ball valve VII, a ball valve nine, a screw pump, a ball valve ten, a liquid sampler, a ball valve eleven, a ball valve twelve, a ball valve thirteen, a ball valve fourteen, a falling ball viscometer and a; the inlet of the pressure reducing valve is connected with the gas cylinder; the pipeline where the needle valve I and the needle valve II are located is combined into a pipeline and then is connected with a gas flowmeter; one end of the check valve is connected with the gas flowmeter, and the other end of the check valve is connected with the top of the high-pressure reaction kettle; an electric stirrer is arranged at the top of the high-pressure reaction kettle; a pressure gauge and a thermometer are arranged at the top of the high-pressure reaction kettle; the first ball valve is connected with the upper part of the side surface of the high-pressure reaction kettle; the inlet of the gas pump is connected with the first ball valve; the outlet of the gas pump is divided into two parallel pipelines, one pipeline is connected with the second ball valve, and the other pipeline is connected with the fourth ball valve; the ball valve IV is connected with the ball valve V; the ball valve six, the ball valve seven and the ball valve eight are connected with the bottom of the high-pressure reaction kettle; the ball valve nine is connected with the lower part of the side surface of the high-pressure reaction kettle; the inlet of the screw pump is connected with the ball valve nine; the outlet of the screw pump is divided into three pipelines, one pipeline is connected with a ball valve thirteen, and the other pipeline is connected with a ball valve fourteen; the ball valve twelve is connected with the ball valve thirteen; the pipeline where the ball valve eleven and the ball valve twelve are located is combined into one pipeline and then is connected with the ball valve fifteen; and the ball valve fifteen is connected with the upper part of the side surface of the high-pressure reaction kettle.
The ball valve fourteen is connected with a falling ball viscometer.
The outlet of the pressure reducing valve is divided into two pipelines, one pipeline is connected with the first needle valve, and the other pipeline is connected with the second needle valve.
And the pipeline where the third ball valve and the fifth ball valve are located is combined into one pipeline and then is divided into three pipelines, one pipeline is connected with the sixth ball valve, one pipeline is connected with the seventh ball valve, and the other pipeline is connected with the eighth ball valve.
One end of the liquid sampler is connected with the ball valve eleven, and the other end of the liquid sampler is connected with the ball valve eleven.
And one end of the gas sampler is connected with the second ball valve, and the other end of the gas sampler is connected with the third ball valve.
And electric heating devices are arranged around the high-pressure reaction kettle and can control the temperature change in the high-pressure reaction kettle.
Compared with the prior art, the invention has the following beneficial effects:
(1) the electric stirrer is arranged at the top of the high-pressure reaction kettle for rotating and stirring, and the screw pump and the gas pump are arranged at the same time, so that the gas and the liquid can be circulated to make the gas and the liquid in flowing contact, the defect that the liquid at the bottom cannot be in contact with the gas is overcome, the dissolution is uniform, and the measurement precision is high.
(2) The double stirring shortens the preparation time of the dissolved crude oil and improves the testing efficiency.
(3) For heavy crude oil, the device can be suitable for light crude oil and heavy crude oil by utilizing a screw pump and a gas pump to carry out circulating flow stirring.
(4) And a gas sampler and a liquid sampler are arranged in the gas circulation and the liquid circulation, so that the online sampling of gas and liquid is realized.
(5) And a falling ball viscometer is arranged, so that the viscosity data of the dissolved gas crude oil can be measured on line.
(6) Three parallel pipelines are arranged to be connected with the bottom of the high-pressure reaction kettle to form multi-part circulating gas injection, which is beneficial to the full mixing of gas and liquid.
(7) The device has the characteristics of suitability for light crude oil and heavy crude oil, high testing efficiency, double stirring, online sampling, online viscosity measurement, uniform dissolution and high measurement precision.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1-a gas cylinder; 2-a pressure reducing valve; 3-needle valve I; 4-needle valve II; 5-a gas flow meter; 6-check valve; 7-a pressure gauge; 8-temperature meter; 9-high pressure reaction kettle; 10-a ball valve I; 11-a gas pump; 12-ball valve two; 13-gas sampler; 14-ball valve III; 15-ball valve four; 16-ball valve five; 17-ball valve six; 18-ball valve seven; 19-ball valve eight; 20-ball valve nine; 21-screw pump; 22-ball valve ten; 23-a liquid sampler; 24-ball valve eleven; 25-ball valve twelve; 26-ball valve thirteen; 27-fourteen ball valves; 28-falling ball viscometer; 29-ball valve fifteen.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of specific embodiments. The following is a more detailed description of the present invention taken in conjunction with specific preferred embodiments, and it is not intended that the present invention be limited to the specific embodiments described herein. For those skilled in the art, without departing from the spirit of the present invention, several simple deductions or substitutions may be made, which should be considered as belonging to the protection scope of the present invention.
As shown in fig. 1, the utility model discloses a gas cylinder 1, relief pressure valve 2, needle valve 3, needle valve two 4, gas flowmeter 5, check valve 6, manometer 7, thermometer 8, high-pressure reaction kettle 9, ball valve 10, gas pump 11, ball valve two 12, gas sampler 13, ball valve three 14, ball valve four 15, ball valve five 16, ball valve six 17, ball valve seven 18, ball valve eight 19, ball valve nine 20, screw pump 21, ball valve ten 22, liquid sampler 23, ball valve eleven 24, ball valve twelve 25, ball valve thirteen 26, ball valve fourteen 27, ball viscometer 28, ball valve fifteen 29 that falls. The inlet of the pressure reducing valve 2 is connected with the gas bottle 1 and used for controlling the gas pressure. The outlet of the pressure reducing valve 2 is divided into two pipelines, one pipeline is connected with a first needle valve 3, and the other pipeline is connected with a second needle valve 4. And the two pipelines where the needle valve I3 and the needle valve II 4 are positioned are combined into one pipeline and then are connected with a gas flowmeter 5. The needle valve I3 and the needle valve II 4 can precisely adjust the flow of gas, and the gas flowmeter 5 is used for measuring the injection amount of the gas. The check valve 6 is connected to the gas flow meter 5 for preventing the reverse flow of the fluid. The check valve 6 is connected with the top of the high-pressure reaction kettle 9. And an electric stirrer is arranged at the top of the high-pressure reaction kettle 9 and is used for stirring and mixing gas-liquid fluid. And a pressure gauge 7 and a thermometer 8 are arranged at the top of the high-pressure reaction kettle 9 and used for displaying pressure and temperature changes. Electric heating belts are arranged around the outside of the high-pressure reaction kettle 9, and the temperature in the high-pressure reaction kettle 9 can be controlled. The first ball valve 10 is connected with the upper part of the side surface of the high-pressure reaction kettle 9. And the inlet of the gas pump 11 is connected with the first ball valve 10, and gas in the upper space in the high-pressure reaction kettle 9 can be extracted. And the outlet of the gas pump 11 is divided into two pipelines, one pipeline is connected with the second ball valve 12, and the other pipeline is connected with the fourth ball valve 15. The ball valve five 16 is connected with the ball valve four 15. The gas sampler 13 is connected with the second ball valve 12 and can sample gas on line. The third ball valve 14 is connected with the gas sampler 13. And the pipeline where the ball valve five 16 and the ball valve three 14 are positioned is combined into one pipeline and then is divided into three pipelines, one pipeline is connected with the ball valve six 17, one pipeline is connected with the ball valve seven 18, and the other pipeline is connected with the ball valve eight 19. And pipelines in which the ball valve six 17, the ball valve seven 18 and the ball valve eight 19 are positioned are all connected with the bottom of the high-pressure reaction kettle 9. The ball valve nine 20 is connected with the lower part of the side surface of the high-pressure reaction kettle 9. And the inlet of the screw pump 21 is connected with the ball valve nine 20 and is used for pumping liquid in the lower space of the high-pressure reaction kettle 9. The outlet of the screw pump 21 is divided into three pipelines, one pipeline is connected with a ball valve fourteen 22, one pipeline is connected with a ball valve thirteen 26, and the other pipeline is connected with a ball valve fourteen 27. The liquid sampler 23 is connected with a ball valve ten 22. The ball valve eleven 24 is connected with the liquid sampler 23. The ball valve twelve 25 is connected with the ball valve thirteen 26. The falling ball viscometer 28 is connected to a ball valve fourteen 27. The pipelines of the ball valve eleven 24 and the ball valve twelve 25 are combined into one pipeline and then connected with the ball valve fifteen 29. The ball valve fifteen 29 is connected with the upper part of the side surface of the high-pressure reaction kettle 9.
The specific operation process of the utility model is explained as follows:
preparation of dissolved crude oil: all valves are closed. Injecting a certain amount of crude oil into the high-pressure reaction kettle 9, and starting the electric heating belts around the high-pressure reaction kettle 9 to heat the crude oil to the experimental temperature. And opening the electric stirrer, and stirring the crude oil to ensure that the crude oil is heated uniformly. And opening the pressure reducing valve 2, the needle valve I3 and the needle valve II 4, and injecting a certain amount of gas into the high-pressure reaction kettle 9. Closing the pressure reducing valve 2, the needle valve I3 and the needle valve II 4, opening the ball valve I10, the ball valve IV 15, the ball valve V16, the ball valve VI 17, the ball valve VII 18, the ball valve VIII 19, the ball valve VII 20, the ball valve VII 25, the ball valve XIII 26 and the ball valve fifteen 29, starting the gas pump 11 and the screw pump 21, and fully stirring and mixing gas and liquid. And after the pressure in the high-pressure reaction kettle 9 is stable and unchanged, the preparation of the dissolved crude oil is finished.
Online sampling: and opening the second ball valve 12, the third ball valve 14, the tenth ball valve 22 and the eleventh ball valve 24, and closing the second ball valve 12, the third ball valve 14, the tenth ball valve 22 and the eleventh ball valve 24 after flowing for a period of time, so that the gas sampler 13 and the liquid sampler 23 finish on-line sampling of gas and liquid.
Measurement of the viscosity of the dissolved crude oil: the ball valve fourteen 27 is opened and a portion of the dissolved crude oil flows into the falling ball viscometer 28. The ball valve fourteen 27 is closed and the viscosity of the dissolved crude oil is measured using a falling ball viscometer 28.
In conclusion, the device sets up electric stirrer at the high-pressure batch autoclave top and rotates the stirring, sets up screw pump and gas pump simultaneously, but circulated gas and liquid make its flow contact, has eliminated the unable drawback of contacting of bottom liquid with gas, makes the dissolution even, and measurement accuracy is high. The double stirring shortens the preparation time of the dissolved crude oil and improves the testing efficiency. For heavy crude oil, the device can be suitable for light crude oil and heavy crude oil by utilizing a screw pump and a gas pump to carry out circulating flow stirring. And a gas sampler and a liquid sampler are arranged in the gas circulation and the liquid circulation, so that the online sampling of gas and liquid is realized. And a falling ball viscometer is arranged, so that the viscosity data of the dissolved gas crude oil can be measured on line. Therefore, the device has the characteristics of suitability for light crude oil and heavy crude oil, high testing efficiency, double stirring, online sampling, online viscosity measurement, uniform dissolution, high measurement precision and the like.
Claims (7)
1. The device is characterized by comprising a gas cylinder, a pressure reducing valve, a needle valve I, a needle valve II, a gas flowmeter, a check valve, a pressure gauge, a thermometer, a high-pressure reaction kettle, a ball valve I, a gas pump, a ball valve II, a gas sampler, a ball valve III, a ball valve IV, a ball valve V, a ball valve VI, a ball valve VII, a ball valve VIII, a screw pump, a ball valve Ten, a liquid sampler, a ball valve eleven, a ball valve twelve, a ball valve thirteen, a ball valve fourteen, a falling ball viscometer and a ball valve fifteen; the inlet of the pressure reducing valve is connected with the gas cylinder; the pipeline where the needle valve I and the needle valve II are located is combined into a pipeline and then is connected with a gas flowmeter; one end of the check valve is connected with the gas flowmeter, and the other end of the check valve is connected with the top of the high-pressure reaction kettle; an electric stirrer is arranged at the top of the high-pressure reaction kettle; a pressure gauge and a thermometer are arranged at the top of the high-pressure reaction kettle; the first ball valve is connected with the upper part of the side surface of the high-pressure reaction kettle; the inlet of the gas pump is connected with the first ball valve; the outlet of the gas pump is divided into two parallel pipelines, one pipeline is connected with the second ball valve, and the other pipeline is connected with the fourth ball valve; the ball valve IV is connected with the ball valve V; the ball valve six, the ball valve seven and the ball valve eight are connected with the bottom of the high-pressure reaction kettle; the ball valve nine is connected with the lower part of the side surface of the high-pressure reaction kettle; the inlet of the screw pump is connected with the ball valve nine; the outlet of the screw pump is divided into three pipelines, one pipeline is connected with a ball valve thirteen, and the other pipeline is connected with a ball valve fourteen; the ball valve twelve is connected with the ball valve thirteen; the pipeline where the ball valve eleven and the ball valve twelve are located is combined into one pipeline and then is connected with the ball valve fifteen; and the ball valve fifteen is connected with the upper part of the side surface of the high-pressure reaction kettle.
2. The apparatus for efficient preparation and viscosity measurement of gas-dissolved crude oil as claimed in claim 1, wherein: the ball valve fourteen is connected with a falling ball viscometer.
3. The apparatus for efficient preparation and viscosity measurement of gas-dissolved crude oil as claimed in claim 1, wherein: the outlet of the pressure reducing valve is divided into two pipelines, one pipeline is connected with the first needle valve, and the other pipeline is connected with the second needle valve.
4. The apparatus for efficient preparation and viscosity measurement of gas-dissolved crude oil as claimed in claim 1, wherein: and the pipeline where the third ball valve and the fifth ball valve are located is combined into one pipeline and then is divided into three pipelines, one pipeline is connected with the sixth ball valve, one pipeline is connected with the seventh ball valve, and the other pipeline is connected with the eighth ball valve.
5. The apparatus for efficient preparation and viscosity measurement of gas-dissolved crude oil as claimed in claim 1, wherein: one end of the liquid sampler is connected with the ball valve eleven, and the other end of the liquid sampler is connected with the ball valve eleven.
6. The apparatus for efficient preparation and viscosity measurement of gas-dissolved crude oil as claimed in claim 1, wherein: and one end of the gas sampler is connected with the second ball valve, and the other end of the gas sampler is connected with the third ball valve.
7. The apparatus for efficient preparation and viscosity measurement of gas-dissolved crude oil as claimed in claim 1, wherein: and electric heating devices are arranged around the high-pressure reaction kettle and can control the temperature change in the high-pressure reaction kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021397148.0U CN212674707U (en) | 2020-07-08 | 2020-07-08 | High-efficient preparation of gas-dissolved crude oil and viscosity measurement device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021397148.0U CN212674707U (en) | 2020-07-08 | 2020-07-08 | High-efficient preparation of gas-dissolved crude oil and viscosity measurement device |
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| CN212674707U true CN212674707U (en) | 2021-03-09 |
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| CN202021397148.0U Expired - Fee Related CN212674707U (en) | 2020-07-08 | 2020-07-08 | High-efficient preparation of gas-dissolved crude oil and viscosity measurement device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2020
- 2020-07-08 CN CN202021397148.0U patent/CN212674707U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Granted publication date: 20210309 Termination date: 20210708 |