Intelligent oil-gas-water measuring device and measuring method thereof

Abstract

The invention provides an intelligent oil-gas-water measuring device and a measuring method thereof, and relates to the technical field of oil-gas-water content detection. The technical problem of low detection precision in the prior art is solved. The intelligent oil-gas-water measuring device comprises a closed online measuring container, a valve device, a collection pipeline and a transmission pipeline, a measured fluid inlet and a measured fluid outlet are formed in two ports of the transmission pipeline respectively, and the closed online measuring container is connected with the transmission pipeline through the collection pipeline. The valve device is arranged on the collection pipeline and the transmission pipeline and can control whether the collection pipeline and the transmission pipeline are conducted or not; the closed online measuring container is provided with an online measuring device, and the online measuring device comprises a water level height measuring device, an oil level height measuring device, a heating device, a temperature measuring device and an air pressure measuring device. The method is used for improving the precision of oil-gas-water content detection in petroleum.

Description

Technical Field

[0001] The present invention relates to the technical field of oil-gas-water content detection, and particularly relates to an intelligent oil-gas-water measuring device and a measuring method thereof. Background Art

[0002] The detection of oil-gas-water content is very important for oil exploitation, crucial for judging whether an oil well has exploitation value, and is an essential core device for realizing a digital oilfield. How to accurately and real-time detect the oil-gas-water content in the well output during oil exploitation has always been a difficult problem in this technical field, especially for small-production wells that are common in domestic oilfields, there has been a lack of effective technical solutions.

[0003] Existing technologies generally first separate gas and liquid, and then use gas flow meters and various liquid flow meters to measure them. For example, a mass flow meter is used to measure the liquid mass flow, and an electromagnetic flow meter or an ultrasonic flow meter is used to measure the volume flow through velocity measurement, so as to obtain the content of each component of oil, water and gas; there are also technologies that directly measure the water content of the oil-water mixture using a water content measuring instrument such as a microwave water content meter.

[0004] The applicant of the present invention has found that the existing technologies have at least the following technical problems:

[0005] Existing measurement technologies focus on measuring single-phase stable flow. Even for a water content meter, which is an instrument for measuring two-phase substances, its measurement accuracy is closely related to the uniformity of the measured substance. Oil, gas and water have great dynamic characteristics during the separation process. Especially, the gas has a great influence on the accuracy of various liquid flow meters, resulting in an unstable measurement process of the flow rate and low accuracy of the measurement results.

[0006] Domestic oil wells generally use pumping units as lifting equipment, resulting in the measured flow rate having a pulsating flow characteristic. The measurement speed and accuracy of the flow meter are contradictory, and the pulsating flow characteristic fluid amplifies this contradiction and reduces the measurement accuracy. In addition, the liquid production volume of small-production wells is low, and the flow rate of the well output is also low, and even cannot reach the starting measurement flow rate of various flow meters.

[0007] The above problems cannot be solved by existing measurement technologies. Summary of the Invention

[0008] The embodiments of the present invention provide an intelligent oil-gas-water measuring device and a measuring method thereof, which solve the technical problem of low detection accuracy existing in the prior art.

[0009] The embodiments of the present invention provide the following technical solutions:

[0010] An intelligent oil, gas and water measuring device provided in an embodiment of the present invention comprises a closed online measuring container, a valve device, a collection pipeline and a transmission pipeline, wherein two ports of the transmission pipeline respectively form an inlet and an outlet of a measured fluid, wherein:

[0011] The closed online measurement container is connected to the transmission pipeline through the collection pipeline, and the valve device is arranged on the collection pipeline and the transmission pipeline and can control whether the collection pipeline and the transmission pipeline are connected;

[0012] When the valve device opens the collection pipeline and closes the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid, the measured fluid entering from the measured fluid inlet can enter the closed online measurement container through the collection pipeline; when the valve device opens the collection pipeline and opens the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid, the measured fluid in the closed online measurement container can flow out from the outlet of the measured fluid through the collection pipeline and the transmission pipeline;

[0013] The closed online measurement container is provided with an online measurement device, which includes a water level measurement device, an oil level measurement device, a heating device, a temperature measurement device and an air pressure measurement device;

[0014] The water level measuring device can measure the water level of the measured fluid in the closed online measuring container;

[0015] The oil level measuring device can measure the oil level of the measured fluid in the closed online measuring container;

[0016] The heating device can heat the measured fluid in the closed online measurement container;

[0017] The temperature measuring device can measure the temperature of the gas and liquid in the closed online measuring container;

[0018] The air pressure measuring device can measure the air pressure in the closed online measuring container.

[0019] Optionally, the valve device includes a first two-way valve and a second two-way valve, wherein the first two-way valve is arranged on the collection pipeline and can control whether the collection pipeline is connected, and the second two-way valve is arranged on the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid and can control whether the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid is connected;

[0020] Alternatively, the valve device is a three-way valve arranged at the connection between the collection pipeline and the transmission pipeline, and when the three-way valve is in a first open state, the collection pipeline is connected, and the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid is closed; when the three-way valve is in a second open state, the collection pipeline is connected, and the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid is also connected (when the three-way valve is in a third open state, the collection pipeline is closed, and the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid is connected).

[0021] Optionally, the first two-way valve and the second two-way valve are both ball valves driven by a motor.

[0022] The number of the closed online measurement containers is at least two, wherein:

[0023] The collection pipeline includes a collection main pipeline connected to the transmission pipeline and at least two collection branch pipelines connected to the collection main pipeline, and each of the closed online measurement containers is connected to the collection main pipeline through one of the collection branch pipelines; when the valve device includes the first two-way valve and the second two-way valve, the first two-way valve is arranged on the collection main pipeline, and when the valve device is a three-way valve arranged at the connection between the collection pipeline and the transmission pipeline, the three-way valve is arranged at the connection between the collection main pipeline and the transmission pipeline;

[0024] Alternatively, the number of the collection pipelines is at least two, and each of the closed online measurement containers is connected to the transmission pipeline through one of the collection pipelines; when the valve device includes the first two-way valve and the second two-way valve, each of the collection pipelines is provided with one of the first two-way valves; when the valve device is a three-way valve arranged at the connection between the collection pipeline and the transmission pipeline, each of the collection pipelines is provided with one of the three-way valves at the connection between the collection pipeline and the transmission pipeline.

[0025] Optionally, the first two-way valve and the second two-way valve are both ball valves driven by a motor.

[0026] Optionally, the valve device further comprises a one-way valve, and the one-way valve is arranged on a section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid;

[0027] The one-way valve only allows the measured fluid to flow toward the measured fluid outlet. The one-way valve is provided with a pressure sensor and a position sensor. The pressure sensor can detect the pressure in the one-way valve, and the position sensor can detect whether the one-way valve is open (and the degree of opening).

[0028] Optionally, the temperature measurement device includes a temperature measuring rod, and gas temperature measurement chips and liquid temperature measurement chips distributed at different height positions of the temperature measuring rod. The position height of the gas temperature measurement chips is higher than that of the liquid temperature measurement chips; or, the temperature measurement device includes a first temperature measuring rod and a second temperature measuring rod. A gas temperature measurement chip is provided at the bottom end of the first temperature measuring rod, and a liquid temperature measurement chip is provided at the bottom end of the second temperature measuring rod. The length of the first temperature measuring rod is shorter than that of the second temperature measuring rod.

[0029] Optionally, both the water level height measurement device and the oil level height measurement device are float-type liquid level measurement devices. The closed-type on-line measurement container is further provided with an anti-adhesion vibration device, which can drive the measured fluid in the closed-type on-line measurement container to vibrate to prevent the float used by the float-type liquid level measurement device from adhering to the measured fluid.

[0030] Optionally, the anti-adhesion vibration device includes a vibration rod and a vibration mechanism. One end of the vibration rod is fixed on the closed-type on-line measurement container, and the other end of the vibration rod extends to the bottom of the closed-type on-line measurement container. The vibration mechanism is arranged at the lower end of the vibration rod in terms of height.

[0031] Optionally, the vibration mechanism includes a housing fixed on the vibration rod and a vibration motor fixed inside the housing. A cam is arranged on the rotating shaft of the vibration motor.

[0032] Optionally, a vibration piece is further fixedly arranged on the housing, and the vibration piece extends horizontally outside the housing.

[0033] Optionally, the closed-type on-line measurement container is a sealed tank body, and the sealed tank body includes a tank body, a top cover, a power line, a data line, an explosion-proof box, and a wireless signal transceiver device, where:

[0034] The top cover is arranged at the top port of the tank body and seals the top port of the tank body. The power line and the data line are connected to the on-line measurement device inside the tank body through the top cover; the explosion-proof box is fixed on the outer wall of the tank body, and the explosion-proof box is provided with a power switch, a controller, and a display screen. The power switch is connected to the power line, the controller is connected to the data line and can display the data detected by the on-line measurement device through the display screen and can perform data interaction with an external control center through the wireless signal transceiver device. The data includes valve device control instructions and on-line measurement device control instructions. The measurement method of the intelligent oil-gas-water measurement device according to any one of the above technical solutions provided by the present invention includes the following steps:

[0035] Step A: Connect any of the intelligent oil-gas-water measurement devices in the above technical solution to the oil transportation pipeline, and use the oil transported by the oil transportation pipeline as the fluid to be measured;

[0036] Step B: Control the valve device to open the collection pipeline and close the section of the transmission pipeline between the collection pipeline and the fluid outlet to be measured, so that the fluid to be measured transported by the fluid to be measured pipeline enters from the fluid inlet to be measured and enters the closed on-line measurement container through the collection pipeline; when the amount of the fluid to be measured in the closed on-line measurement container meets the measurement conditions, control the valve device to close the collection pipeline and open the section of the transmission pipeline between the collection pipeline and the fluid outlet to be measured, so that the fluid to be measured passing through the fluid to be measured pipeline continues to be transported;

[0037] Step C: Control the heating device in the on-line measurement device to heat the fluid to be measured in the closed on-line measurement container, so that the oil, gas and water in the fluid to be measured are separated and stratified. Measure the water level height of the fluid to be measured in the closed on-line measurement container through the water level height measurement device, measure the oil level height of the fluid to be measured in the closed on-line measurement container through the oil level height measurement device, measure the temperature of the liquid and gas in the closed on-line measurement container through the temperature measurement device, and measure the air pressure in the closed on-line measurement container through the air pressure measurement device;

[0038] Step D: According to the water level height value, oil level height value, temperature value, air pressure value detected by the on-line measurement device, the known densities of oil, gas and water, and the corresponding relationship between the volume of the closed on-line measurement container and the water level height value, oil level height value, temperature value and air pressure value, calculate the respective contents (mass fractions) of oil, gas and water in the fluid to be measured;

[0039] Step E: Control the valve device to open the collection pipeline and open the section of the transmission pipeline between the collection pipeline and the fluid outlet to be measured, so that the fluid to be measured in the closed on-line measurement container flows out from the fluid outlet to be measured through the collection pipeline and the transmission pipeline.

[0040] Any of the above technical solutions provided by the embodiments of the present invention at least produces the following technical effects:

[0041] The intelligent oil-gas-water measurement device provided by the present invention uses a closed online measurement container, enabling the products of an oil well to be completely gathered in the closed online measurement container within a certain period of time, and realizing the whole-cycle sampling of pulsating flow, thereby creating conditions for accurately measuring the oil-gas-water content. The heating in the closed container enables the oil, gas, and water to be more fully separated and stratified, and the combined action of heating and vibration enables the liquid level to be accurately measured. In addition, the gas discharge after one measurement well clears the substances in the closed container, providing conditions for subsequent measurements. Therefore, the detection accuracy for the three-phase oil-gas-water is better, and the technical problem of low detection accuracy existing in the prior art is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Through the following drawings, those skilled in the art can better understand the technical effects of the present invention, where:

[0043] Figure 1 It is a schematic diagram of an intelligent oil-gas-water measurement device provided by an embodiment of the present invention.

[0044] Figure 2 It is a schematic diagram of another intelligent oil-gas-water measurement device provided by an embodiment of the present invention.

[0045] Figure 3 It is a schematic diagram of yet another intelligent oil-gas-water measurement device provided by an embodiment of the present invention.

[0046] Figure 4 It is a schematic diagram of still another intelligent oil-gas-water measurement device provided by an embodiment of the present invention.

[0047] Reference numerals in the figure: 1. Closed online measurement container; 2. Top cover; 3. Air pressure measurement device; 4. Water level height measurement device; 41. Floating ball; 5. Anti-adhesion vibration device; 6. Oil level height measurement device; 61. Floating ball; 7. Heating device; 8. Temperature measurement device; 9. Display screen; 10. Explosion-proof box; 112. Valve device; 11. First two-way valve; 12. Second two-way valve; 13. Position sensor; 14. Pressure sensor; 15. Measured fluid inlet; 16. Measured fluid outlet; 17. Collection pipeline; 171. Collection main pipeline; 172. Collection branch pipeline; 18. Transmission pipeline; 19. Three-way valve; 20. Check valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] The following will more Figures 1-4 detailedly describe the preferred embodiments provided by the embodiments of the present invention and many optional implementation schemes.

[0049] As Figures 1-4As shown, an intelligent oil, gas and water measuring device provided by an embodiment of the present invention comprises a closed online measuring container (preferably a tank) 1, a valve device 112, a collection pipeline 17 and a transmission pipeline 18, wherein two ports of the transmission pipeline 18 respectively form a measured fluid inlet 15 and a measured fluid outlet 16, wherein:

[0050] The closed online measurement container 1 is connected to the transmission pipeline 18 via the collection pipeline 17. The valve device 112 is arranged on the collection pipeline 17 and the transmission pipeline 18 and can control whether the collection pipeline 17 and the transmission pipeline 18 are connected;

[0051] When the valve device 112 opens the collection pipeline 17 and closes the section of the transmission pipeline 18 between the collection pipeline 17 and the measured fluid outlet 16, the measured fluid entering from the measured fluid inlet 15 can enter the closed online measurement container 1 through the collection pipeline 17; when the valve device 112 opens the collection pipeline 17 and opens the section of the transmission pipeline 18 between the collection pipeline 17 and the measured fluid outlet 16, the measured fluid in the closed online measurement container 1 can flow out from the measured fluid outlet 16 through the collection pipeline 17 and the transmission pipeline 18;

[0052] The closed online measuring container 1 is provided with an online measuring device, which includes a water level measuring device 4, an oil level measuring device 6, a heating device 7, a temperature measuring device 8 and an air pressure measuring device 3;

[0053] The water level measuring device 4 can measure the water level of the measured fluid in the closed online measuring container 1;

[0054] The oil level measuring device 6 can measure the oil level of the measured fluid in the closed online measuring container 1;

[0055] The heating device 7 can heat the measured fluid in the closed online measuring container 1;

[0056] The temperature measuring device 8 can measure the temperature of the gas and the temperature of the liquid (preferably the temperature of water) in the closed online measuring container 1;

[0057] The air pressure measuring device 3 can measure the air pressure in the closed online measurement container 1 .

[0058] The intelligent oil, gas and water measuring device provided by the present invention uses a closed online measuring container 1, so that the output of the oil well within a period of time is completely gathered in the closed online measuring container 1, and pulsating flow full-cycle sampling is realized, thereby creating conditions for accurately measuring the oil, gas and water content. The heating in the closed container enables the oil, gas and water to be more fully separated and stratified, and the combined effect of heating and vibration enables the liquid level to be accurately measured. In addition, the discharge of gas after a measurement is completed can effectively clear the substances in the closed container, so the detection accuracy is better.

[0059] As an optional embodiment of the present invention, the valve device 112 in this embodiment may include a first two-way valve 11 and a second two-way valve 12. The first two-way valve 11 is arranged on the collection pipeline 17 and can control whether the collection pipeline 17 is conductive. The second two-way valve 12 is arranged on the section of the transmission pipeline 18 between the collection pipeline 17 and the outlet 16 of the fluid to be measured and can control whether the section of the transmission pipeline 18 between the collection pipeline 17 and the outlet 16 of the fluid to be measured is conductive.

[0060] The valve device 112 uses the first two-way valve 11 and the second two-way valve 12 as hardware, and has the advantages of convenient disassembly, maintenance, and control, high reliability in use, and simple pipeline connection.

[0061] As an optional embodiment of the present invention, in this embodiment, the valve device 112 can be arranged at the connection between the collection pipeline 17 and the transmission pipeline 18. Figure 2 The three-way valve 19 shown, when the three-way valve 19 is in a first open state, the collection pipeline 17 is connected, and the section of the transmission pipeline 18 between the collection pipeline 17 and the outlet 16 of the measured fluid is closed; when the three-way valve is in a second open state, the collection pipeline 17 is connected, and the section of the transmission pipeline 18 between the collection pipeline 17 and the outlet 16 of the measured fluid is also connected (when the three-way valve is in a third open state, the collection pipeline is closed, and the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid is connected).

[0062] Compared with the solution in which the valve device 112 uses the first two-way valve 11 and the second two-way valve 12 as hardware, the valve device 112 uses the three-way valve 19, which has the advantages of simple structure and low cost.

[0063] As an optional embodiment of the present invention, the number of the closed online measurement containers 1 is at least two, wherein: Figure 3 The collection pipeline 17 shown includes a collection main pipeline 171 connected to the transmission pipeline 18 and at least two collection branch pipelines 172 connected to the collection main pipeline 171. Each closed online measurement container 1 is connected to the collection main pipeline 171 through a collection branch pipeline 172. When the valve device 112 includes a first two-way valve 11 and a second two-way valve 12, the first two-way valve 11 is arranged on the collection main pipeline 171. When the valve device 112 is a three-way valve 19 arranged at the connection between the collection pipeline 17 and the transmission pipeline 18, the three-way valve 19 is arranged at the connection between the collection main pipeline 171 and the transmission pipeline 18.

[0064] By increasing the number of closed online measurement containers 1, the total capacity is increased, and the range of one measurement is expanded; Figure 3Shown are two closed - type on - line measurement containers 1, but not limited to two. Three or more closed - type on - line measurement containers 1 can be connected in parallel.

[0065] As an alternative embodiment of the present invention, the number of closed - type on - line measurement containers 1 is at least two, where: as Figure 4 Shown, the number of collection pipelines 17 is at least two. Each closed - type on - line measurement container 1 is connected to the transmission pipeline 18 through a collection pipeline 17. When the valve device 112 includes a first two - way valve 11 and a second two - way valve 12, a first two - way valve 11 is provided on each collection pipeline 17; when the valve device 112 is a three - way valve 19 provided at the connection of the collection pipeline 17 and the transmission pipeline 18, a three - way valve 19 is provided at the connection of each collection pipeline 17 and the transmission pipeline 18.

[0066] By increasing the closed - type on - line measurement containers 1, continuous measurement is achieved. When the left - hand closed - type on - line measurement container 1 is measuring, the right - hand closed - type on - line measurement container 1 is sampling, and they take turns. Figure 4 Shown are two closed - type on - line measurement containers 1, but not limited to two. Three or more closed - type on - line measurement containers 1 can be connected in parallel. When the production is low, the number of closed - type on - line measurement containers 1 is small, and the higher the production, the more closed - type on - line measurement containers 1 are connected in parallel to achieve continuous measurement.

[0067] As an alternative embodiment of the present invention, in this embodiment, both the first two - way valve 11 and the second two - way valve 12 are motor - driven ball valves. Motor - driven ball valves have the advantages of fast switching speed, little impact on normal oil extraction, little mutual influence between normal oil transportation and detection, and high detection accuracy compared with solenoid valves.

[0068] As an alternative embodiment of the present invention, in this embodiment, the valve device 112 further includes a check valve 20. The check valve 20 is provided in the section of the transmission pipeline 18 between the collection pipeline 17 and the measured fluid outlet 16;

[0069] The check valve 20 only allows the measured fluid flowing through it to flow towards the measured fluid outlet 16. A pressure sensor 14 and a position sensor 13 are provided on the check valve 20. The pressure sensor 14 can detect the pressure inside the check valve 20, and the position sensor 13 can detect whether the check valve 20 is open (and the degree of opening).

[0070] The check valve 20 can prevent the measured fluid from flowing back and affecting the detection accuracy. The settings of the pressure sensor 14 and the position sensor 13 can detect the working state of the check valve 20 in real - time, so as to timely discover problems in measurement and reduce the accident rate.

[0071] As an alternative embodiment of the present invention, in this embodiment, asFigure 1 and Figure 2 The temperature measurement device 8 shown includes a temperature measurement rod, and gas temperature measurement chips and liquid temperature measurement chips distributed at different height positions of the temperature measurement rod. The position height of the gas temperature measurement chips is higher than that of the liquid temperature measurement chips; alternatively, the temperature measurement device 8 includes a first temperature measurement rod and a second temperature measurement rod. A gas temperature measurement chip is provided at the bottom end of the first temperature measurement rod, and a liquid temperature measurement chip is provided at the bottom end of the second temperature measurement rod. The length of the first temperature measurement rod is shorter than that of the second temperature measurement rod.

[0072] Water has a greater density than oil, so the position height of water is lower than that of oil. Therefore, the above design helps to improve the detection accuracy.

[0073] As an alternative embodiment of the present invention, in this embodiment, both the water level height measurement device 4 and the oil level height measurement device 6 are float-type liquid level measurement devices. The closed online measurement container 1 is further provided with an anti-adhesion vibration device 5. The anti-adhesion vibration device 5 can drive the measured fluid in the closed online measurement container 1 to vibrate to prevent the float used in the float-type liquid level measurement device from adhering to the measured fluid.

[0074] The anti-adhesion vibration device 5 can prevent the float used in the float-type liquid level measurement device from adhering to the measured fluid, thereby improving the detection accuracy and the service life of the float-type liquid level measurement device.

[0075] As an alternative embodiment of the present invention, in this embodiment, the anti-adhesion vibration device 5 includes a vibration rod and a vibration mechanism. One end of the vibration rod is fixed on the closed online measurement container 1, and the other end of the vibration rod extends to the bottom of the closed online measurement container 1. The vibration mechanism is arranged at the lower end of the vibration rod.

[0076] The vibration rod not only serves as an installation carrier for the vibration mechanism, but also can release the vibration energy released by the vibration mechanism into the measured fluid, thereby effectively preventing the measured fluid from adhering to the float used in the float-type liquid level measurement device.

[0077] As an alternative embodiment of the present invention, in this embodiment, the vibration mechanism includes a housing fixed on the vibration rod and a vibration motor fixed inside the housing. A cam is arranged on the rotating shaft of the vibration motor.

[0078] During the operation of the rotating shaft of the vibration motor driving the cam, it will drive the vibration motor itself and its housing to vibrate, thereby releasing vibration energy. This vibration mechanism has the advantages of convenient control and compact structure.

[0079] As an alternative embodiment of the present invention, in this embodiment, a vibration piece is further fixed on the housing. The vibration piece extends horizontally outside the housing. The vibration piece can expand the speed and intensity of the vibration energy released in the horizontal direction, thereby improving the vibration effect.

[0080] As an alternative embodiment of the present invention, in this embodiment, the closed - type on - line measurement container 1 is a sealed tank body, and the sealed tank body includes a tank body, a top cover 2, a power line, a data line ( Figure 1 the center dotted line represents the power line and the data line), an explosion - proof box 10, and a wireless signal transceiver device, wherein: the top cover 2 is arranged at the top port of the tank body and seals the top port of the tank body, and the power line and the data line are connected to the on - line measurement device inside the tank body through the top cover 2; the explosion - proof box 10 is fixed on the outer wall of the tank body, and the explosion - proof box 10 is provided with a power switch, a controller, and a display screen 9. The power switch is connected to the power line, the controller is connected to the data line and can display the data detected by the on - line measurement device through the display screen 9 and can perform data interaction with an external control center through the wireless signal transceiver device. The data includes the control instruction of the valve device 112 and the control instruction of the on - line measurement device.

[0081] The above settings can enable the present invention to have functions of remote monitoring, detection, and control, and improve the automation and intelligent level of the present invention.

[0082] As an alternative embodiment of the present invention, in this embodiment, the heating device 7 is rod - shaped. The rod - shaped heating device 7 has a larger contact area with the fluid to be measured, which is beneficial to improving the heating speed.

[0083] The measurement method of the intelligent oil - gas - water measurement device according to any one of the above - mentioned technical solutions provided by the present invention includes the following steps:

[0084] Step A: Connect the intelligent oil - gas - water measurement device according to any one of the above - mentioned technical solutions to an oil transportation pipeline, and use the oil transported by the oil transportation pipeline as the fluid to be measured;

[0085] Step B: Control the valve device 112 to open the collection pipeline 17 and close the section of the transmission pipeline 18 between the collection pipeline 17 and the fluid - to - be - measured outlet 16, so that the fluid to be measured transported by the fluid - to - be - measured pipeline enters from the fluid - to - be - measured inlet 15 and enters the closed - type on - line measurement container 1 through the collection pipeline 17; when the amount of the fluid to be measured in the closed - type on - line measurement container 1 meets the measurement conditions, the valve device 112 closes the collection pipeline 17 and opens the section of the transmission pipeline 18 between the collection pipeline 17 and the fluid - to - be - measured outlet 16, so that the fluid to be measured passing through the fluid - to - be - measured pipeline continues to be transported;

[0086] Step C: Control the heating device 7 in the on-line measuring device to heat the fluid to be measured in the closed on-line measuring container 1, so that the oil, gas and water in the fluid to be measured are separated and stratified. Measure the water level height of the fluid to be measured in the closed on-line measuring container 1 through the water level height measuring device 4, measure the oil level height of the fluid to be measured in the closed on-line measuring container 1 through the oil level height measuring device 6, measure the temperature of the liquid and gas in the closed on-line measuring container 1 through the temperature measuring device 8, and measure the air pressure in the closed on-line measuring container 1 through the air pressure measuring device 3;

[0087] Step D: Based on the water level height value, oil level height value, temperature value, air pressure value detected by the on-line measuring device, the known densities of oil, gas and water, and the corresponding relationship between the volume of the closed on-line measuring container 1 and the water level height value, oil level height value, temperature value, air pressure value, calculate the respective contents (mass fractions) of oil, gas and water in the fluid to be measured;

[0088] Step E: The control valve device 112 opens the collection pipeline 17 and the section of the transmission pipeline 18 between the collection pipeline 17 and the fluid outlet 16 to be measured, so that the fluid to be measured in the closed on-line measuring container 1 flows out from the fluid outlet 16 through the collection pipeline 17 and the transmission pipeline 18.

[0089] Through the above method, the measurement of the contents of oil, gas and water in oil can be accurately realized without affecting the normal oil extraction process, thereby providing reliable data support for reasonably evaluating the value of oil wells and formulating extraction plans.

[0090] The above technical solutions are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. The present invention does not limit the number of any component or device (such as the closed on-line measuring container). That is to say, the number of any component or device can be one, or two or more. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An intelligent oil-gas-water measurement device, characterized in that: It includes a closed online measurement container, a valve device, a collection pipeline and a transmission pipeline, wherein two ports of the transmission pipeline respectively form an inlet and an outlet of the measured fluid, wherein: The closed online measurement container is connected to the transmission pipeline through the collection pipeline, and the valve device is arranged on the collection pipeline and the transmission pipeline and can control whether the collection pipeline and the transmission pipeline are connected; When the valve device opens the collection pipeline and closes the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid, the measured fluid entering from the measured fluid inlet can enter the closed online measurement container through the collection pipeline; when the valve device opens the collection pipeline and opens the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid, the measured fluid in the closed online measurement container can flow out from the outlet of the measured fluid through the collection pipeline and the transmission pipeline; The closed online measurement container is provided with an online measurement device, which includes a water level measurement device, an oil level measurement device, a heating device, a temperature measurement device and an air pressure measurement device; The water level measuring device can measure the water level of the measured fluid in the closed online measuring container; The oil level measuring device can measure the oil level of the measured fluid in the closed online measuring container; The heating device can heat the measured fluid in the closed online measurement container; The temperature measuring device can measure the temperature of the gas and liquid in the closed online measuring container; The air pressure measuring device can measure the air pressure in the closed online measuring container.

2. The intelligent oil-gas-water measuring device according to claim 1, wherein: The valve device comprises a first two-way valve and a second two-way valve, wherein the first two-way valve is arranged on the collection pipeline and can control whether the collection pipeline is open, and the second two-way valve is arranged on the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid and can control whether the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid is open; Alternatively, the valve device is a three-way valve arranged at the connection between the collection pipeline and the transmission pipeline. When the three-way valve is in a first open state, the collection pipeline is connected, and the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid is closed; when the three-way valve is in a second open state, the collection pipeline is connected, and the section of the transmission pipeline between the collection pipeline and the outlet of the measured fluid is also connected.

3. The intelligent oil-gas-water measuring device according to claim 2, characterized in that: The number of the closed online measurement containers is at least two, wherein: The sampling pipeline includes a main sampling pipeline communicating with the transmission pipeline and at least two sub-sampling pipelines communicating with the main sampling pipeline. Each of the closed online measurement containers communicates with the main sampling pipeline through one of the sub-sampling pipelines. When the valve device includes the first two-way valve and the second two-way valve, the first two-way valve is arranged on the main sampling pipeline. When the valve device is a three-way valve arranged at the connection between the sampling pipeline and the transmission pipeline, the three-way valve is arranged at the connection between the main sampling pipeline and the transmission pipeline. Alternatively, the number of the sampling pipelines is at least two, and each of the closed online measurement containers communicates with the transmission pipeline through one of the sampling pipelines. When the valve device includes the first two-way valve and the second two-way valve, one first two-way valve is arranged on each of the sampling pipelines. When the valve device is a three-way valve arranged at the connection between the sampling pipeline and the transmission pipeline, one three-way valve is arranged at the connection between each of the sampling pipelines and the transmission pipeline.

4. The intelligent oil-gas-water measuring device according to claim 2, characterized in that: The valve device further includes a check valve, and the check valve is arranged on the section of the transmission pipeline between the sampling pipeline and the outlet of the fluid to be measured. The check valve only allows the fluid to be measured flowing through it to flow towards the outlet of the fluid to be measured. A pressure sensor and a position sensor are arranged on the check valve. The pressure sensor can detect the pressure inside the check valve, and the position sensor can detect whether the check valve is open.

5. The intelligent oil-gas-water measuring device according to claim 1, wherein: The temperature measurement device includes a temperature measuring rod and gas temperature measurement chips and liquid temperature measurement chips distributed at different height positions of the temperature measuring rod. The position height of the gas temperature measurement chips is higher than that of the liquid temperature measurement chips. Alternatively, the temperature measurement device includes a first temperature measuring rod and a second temperature measuring rod. A gas temperature measurement chip is arranged at the bottom end of the first temperature measuring rod, and a liquid temperature measurement chip is arranged at the bottom end of the second temperature measuring rod. The length of the first temperature measuring rod is shorter than that of the second temperature measuring rod.

6. The intelligent oil-gas-water measurement device according to claim 1, wherein: Both the water level height measurement device and the oil level height measurement device are float type liquid level measurement devices. The closed online measurement container is further provided with an anti-adhesion vibration device, and the anti-adhesion vibration device can drive the fluid to be measured in the closed online measurement container to vibrate to prevent the float used by the float type liquid level measurement device from adhering to the fluid to be measured.

7. The intelligent oil-gas-water measuring device according to claim 6, characterized in that: The anti-adhesion vibration device includes a vibration rod and a vibration mechanism. One end of the vibration rod is fixed on the closed online measurement container, and the other end of the vibration rod extends to the bottom of the closed online measurement container. The vibration mechanism is arranged at the lower end of the vibration rod.

8. The intelligent oil-gas-water measurement device according to claim 7, wherein: The vibration mechanism includes a housing fixed on the vibration rod and a vibration motor fixed inside the housing. A cam is arranged on the rotating shaft of the vibration motor. A vibration plate is further fixedly arranged on the housing, and the vibration plate extends out of the housing in the horizontal direction.

9. The intelligent oil-gas-water measuring device according to claim 1, characterized in that: The enclosed on-line measurement container is a sealed tank body, which includes a tank body, a top cover, a power line, a data line, an explosion-proof box and a wireless signal transceiver device, where: The top cover is arranged at the top port of the tank body and seals the top port of the tank body. The power line and the data line are connected to the on-line measurement device in the tank body through the top cover. The explosion-proof box is fixed on the outer wall of the tank body, and the explosion-proof box is provided with a power switch, a controller and a display screen. The power switch is connected to the power line, and the controller is connected to the data line and can display the data detected by the on-line measurement device through the display screen and can perform data interaction with an external control center through the wireless signal transceiver device. The data includes valve device control instructions and on-line measurement device control instructions.

10. A measurement method of the intelligent oil-gas-water measurement device according to any one of claims 1-9, characterized in that: It includes the following steps: Step A: Connect the intelligent oil-gas-water measurement device according to any one of claims 1-9 to an oil pipeline, and use the oil transported by the oil pipeline as the fluid to be measured. Step B: Control the valve device to open the collection pipeline and close the section of the transmission pipeline between the collection pipeline and the outlet of the fluid to be measured, so that the fluid to be measured transported by the fluid to be measured pipeline enters from the inlet of the fluid to be measured and enters the enclosed on-line measurement container through the collection pipeline. When the amount of the fluid to be measured in the enclosed on-line measurement container meets the measurement conditions, control the valve device to close the collection pipeline and open the section of the transmission pipeline between the collection pipeline and the outlet of the fluid to be measured, so that the fluid to be measured passing through the fluid to be measured pipeline continues to be transported. Step C: Control the heating device in the on-line measurement device to heat the fluid to be measured in the enclosed on-line measurement container, so that the oil, gas and water in the fluid to be measured are separated and stratified. Measure the water level height of the fluid to be measured in the enclosed on-line measurement container through the water level height measurement device, measure the oil level height of the fluid to be measured in the enclosed on-line measurement container through the oil level height measurement device, measure the temperature of the liquid and gas in the enclosed on-line measurement container through the temperature measurement device, and measure the air pressure in the enclosed on-line measurement container through the air pressure measurement device. Step D: Calculate the respective contents of oil, gas and water in the fluid to be measured based on the water level height value, oil level height value, temperature value, air pressure value detected by the on-line measurement device, the pre-known densities of oil, gas and water, and the corresponding relationship between the volume of the enclosed on-line measurement container and the water level height value, oil level height value, temperature value and air pressure value. Step E: Control the valve device to open the collection pipeline and open the section of the transmission pipeline between the collection pipeline and the outlet of the fluid to be measured, so that the fluid to be measured in the enclosed on-line measurement container flows out from the outlet of the fluid to be measured through the collection pipeline and the transmission pipeline.

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