Online monitor for simultaneously measuring and controlling water and carbon dioxide

Abstract

The utility model discloses an on-line monitor for simultaneously measuring and controlling water and carbon dioxide, which comprises a detection module and an adjusting module, the detection module comprises an intelligent volume corrector and a detection pipeline, a vortex generator is mounted in the detection pipeline, and a detection mounting seat is arranged at the upper part of the detection pipeline; a pressure sensor assembly, a flow sensor assembly, a temperature sensor assembly and a medium identification sensor are mounted on the detection mounting seat; the adjusting module comprises an adjusting valve body, a control valve actuator, a valve rod and an adjusting valve element, the control valve actuator is installed on the upper portion of the adjusting valve body, the valve rod is arranged on the adjusting valve body in a penetrating mode, the upper end of the valve rod is in linkage connection with the output end of the control valve actuator, and the lower end of the valve rod is in linkage connection with the adjusting valve element; the detection pipeline is communicated with the adjusting valve body, and the input end of the control valve actuator is connected with the intelligent volume correction instrument through a wire. The utility model solves the technical problems of poor gas-liquid mixed transportation effect, low injection efficiency and the like of the existing oil field CO2 on-line monitor.

Description

Technical Field

[0001] The utility model relates to the technical field of flow measurement, in particular to an online monitor for simultaneously measuring and controlling water and carbon dioxide. Background Art

[0002] Carbon dioxide flooding is a technology that injects carbon dioxide into oil layers to increase oil field recovery. When carbon dioxide and formation crude oil first come into contact, they cannot form a miscible phase, but under the conditions of appropriate pressure, temperature and crude oil composition, carbon dioxide can form a miscible front. Supercritical fluid will extract heavier hydrocarbons from crude oil and continuously concentrate the gas at the displacement front. As a result, carbon dioxide and crude oil become miscible liquids, forming a single liquid phase, which can effectively displace formation crude oil to production wells. Carbon dioxide flooding can significantly increase crude oil recovery and extend the production life of oil wells.

[0003] Carbon dioxide recovery requires the use of CO2 online monitors. However, existing oilfield CO2 online monitors have technical problems such as poor gas-liquid mixing effect and low injection efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an online monitor for simultaneously measuring and controlling water and carbon dioxide. The utility model is suitable for measuring and controlling carbon dioxide and water in various phases, meeting the needs of different application scenarios, and solving the technical problems of poor gas-liquid mixed transmission effect and low injection efficiency in existing oilfield CO2 online monitors.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an online monitor for simultaneously measuring and controlling water and carbon dioxide, comprising a detection module and a regulation module,

[0006] The detection module includes an intelligent volume corrector and a detection pipeline, a vortex generator is installed in the detection pipeline, a detection mounting seat is provided on the upper part of the detection pipeline, a pressure sensor assembly, a flow sensor assembly, a temperature sensor assembly and a medium identification sensor are installed on the detection mounting seat, the detection ends of the pressure sensor assembly, the flow sensor assembly, the temperature sensor assembly and the medium identification sensor extend into the inner cavity of the detection pipeline, and the output ends of the pressure sensor assembly, the flow sensor assembly, the temperature sensor assembly and the medium identification sensor are connected to the intelligent volume corrector through a wire;

[0007] The regulating module includes a regulating valve body, a control valve actuator, a valve stem and a regulating valve core, wherein the control valve actuator is installed on the upper part of the regulating valve body, the valve stem is arranged through the regulating valve body, the upper end of the valve stem is linked to the output end of the control valve actuator, and the lower end of the valve stem is linked to the regulating valve core arranged inside the regulating valve body, so as to control the flow rate of the flow channel inside the regulating valve body;

[0008] The outlet end of the detection pipeline is connected to the inlet end of the regulating valve body, and the input end of the control valve actuator is connected to the intelligent volume corrector through a wire.

[0009] By adopting the above technical solution, this application integrates flowmeter, intelligent control system, flow monitoring, pressure monitoring, and temperature monitoring system. The desired flow value can be set arbitrarily within the measuring range of the device. By comparing the deviation between the detected signal and the set value, the control system (intelligent volume corrector) and the actuator (control valve actuator) automatically adjust the flow rate, so that the flow rate or temperature in the pipeline is always maintained at the set value, ensuring the accuracy of the flow rate or temperature. It is suitable for the automated control of the constant flow regulation process of pipeline liquid and online temperature and pressure monitoring, meeting the needs of different application scenarios, and solving the technical problems of poor gas-liquid mixed transmission effect and low injection efficiency in existing oilfield CO2 online monitors.

[0010] The utility model is further configured that a liner is welded on the inner wall of the detection pipeline, and the vortex generator is welded inside the liner.

[0011] By adopting the above technical solution, it is possible to avoid the vortex generating body from being welded into the detection pipeline, thereby playing a role in protecting the detection pipeline.

[0012] The utility model is further configured such that the detection module also includes a dust cover, the lower end of the dust cover is mounted on the detection mounting base, the intelligent volume corrector is mounted on the upper end of the dust cover, and the dust cover surrounds the pressure sensor assembly, flow sensor assembly, temperature sensor assembly and medium identification sensor inside.

[0013] By adopting the above technical scheme, the pressure sensor assembly, flow sensor assembly, temperature sensor assembly and medium identification sensor can be protected and dust-proof, waterproof and touch-proof. Not only can the service life of the pressure sensor assembly, flow sensor assembly, temperature sensor assembly and medium identification sensor be improved, but also the stable output of each detection data can be guaranteed.

[0014] The utility model is further configured such that a first flange is welded at each end of the detection pipe, and a first limiting step for abutting against an inner end of the first flange is provided on the detection pipe; a second flange is welded at each end of the regulating valve body, and a second limiting step for abutting against an inner end of the second flange is provided on the regulating valve body; the first flange at the outlet end of the detection pipe and the second flange at the inlet end of the regulating valve body are detachably connected together by bolts.

[0015] The adoption of the above technical solution is not only beneficial to the early assembly, but also beneficial to the later disassembly and maintenance operations.

[0016] The utility model is further configured such that a positioning groove is provided at the outer end of the first flange, and a positioning protrusion which fits with the positioning groove is provided at the outer end of the second flange.

[0017] By adopting the above technical solution, the first flange and the second flange are positioned, which is beneficial to the connection of the bolts and further facilitates the early assembly operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] In the figure: 1. detection module; 2. adjustment module; 3. intelligent volume corrector; 4. detection pipeline; 5. vortex generator; 6. detection mounting seat; 7. pressure sensor assembly; 8. flow sensor assembly; 9. temperature sensor assembly; 10. medium identification sensor; 11. regulating valve body; 12. control valve actuator; 13. valve stem; 14. regulating valve core; 15. liner; 16. dust cover; 17. first flange; 18. first limit step; 19. second flange; 20. second limit step; 21. bolt; 22. positioning groove; 23. positioning protrusion. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example: As attached Figure 1 The online monitor for simultaneously measuring and controlling water and carbon dioxide shown in the figure comprises a detection module 1 and a regulation module 2.

[0022] The detection module 1 includes an intelligent volume corrector 3 and a detection pipeline 4, a vortex generator 5 is installed in the detection pipeline 4, a detection mounting seat 6 is provided on the upper part of the detection pipeline 4, a pressure sensor assembly 7, a flow sensor assembly 8, a temperature sensor assembly 9 and a medium identification sensor 10 are installed on the detection mounting seat 6, and the detection ends of the pressure sensor assembly 7, the flow sensor assembly 8, the temperature sensor assembly 9 and the medium identification sensor 10 extend into the inner cavity of the detection pipeline 4, and the output ends of the pressure sensor assembly 7, the flow sensor assembly 8, the temperature sensor assembly 9 and the medium identification sensor 10 are connected to the intelligent volume corrector 3 through a wire;

[0023] The regulating module 2 includes a regulating valve body 11, a control valve actuator 12, a valve stem 13 and a regulating valve core 14, wherein the control valve actuator 12 is installed on the upper part of the regulating valve body 11, and the valve stem 13 is arranged through the regulating valve body 11, and the upper end of the valve stem 13 is linked to the output end of the control valve actuator 12, and the lower end of the valve stem 13 is linked to the regulating valve core 14 arranged inside the regulating valve body 11, so as to control the flow rate of the internal flow channel of the regulating valve body 11;

[0024] The outlet end of the detection pipeline 4 is connected to the inlet end of the regulating valve body 11, and the input end of the control valve actuator 12 is connected to the intelligent volume corrector 3 through a wire.

[0025] in:

[0026] The intelligent volume corrector 3 is used as a control system, which realizes the phase state discrimination of the medium according to the data of the pressure, temperature and flow sensors, and calls the corresponding algorithm to calculate the flow;

[0027] The pressure sensor assembly 7 is used to monitor the pressure change of the medium in the pipeline in real time and provide accurate pressure data for the control system (intelligent volume corrector 3);

[0028] The flow sensor assembly 8 is responsible for measuring the flow of the medium (water and carbon dioxide) in the pipeline to ensure the accuracy of the flow data;

[0029] The temperature sensor assembly 9 is used to monitor the temperature change of the medium in the pipeline in real time, and provide key parameters for calculating the carbon dioxide density and phase identification;

[0030] The medium identification sensor 10 is used to assist the intelligent volume corrector 3 in distinguishing the phase of the medium, thereby improving the accuracy of phase identification;

[0031] Regulation module 2: Automatically adjust the valve opening according to the deviation between the set value and the detected signal to achieve precise control of the flow rate.

[0032] As attached Figure 1As shown, a liner 15 is welded on the inner wall of the detection pipe 4, and the vortex generator 5 is welded in the liner 15. Providing the liner 15 on the inner wall of the detection pipe 4 can prevent the vortex generator 5 from being welded into the detection pipe 4, thereby protecting the detection pipe 4.

[0033] As attached Figure 1 As shown, the detection module 1 also includes a dust cover 16, the lower end of the dust cover 16 is installed (via screws) on the detection mounting seat 6, the intelligent volume corrector 3 is installed (via screws) on the upper end of the dust cover 16, and the dust cover 16 surrounds the pressure sensor assembly 7, the flow sensor assembly 8, the temperature sensor assembly 9 and the medium identification sensor 10. The addition of the dust cover 16 can protect the pressure sensor assembly 7, the flow sensor assembly 8, the temperature sensor assembly 9 and the medium identification sensor 10, and can prevent dust, water and touch, which can not only improve the service life of the pressure sensor assembly 7, the flow sensor assembly 8, the temperature sensor assembly 9 and the medium identification sensor 10, but also ensure the stable output of each detection data.

[0034] As attached Figure 1 As shown, a first flange 17 is welded at both ends of the detection pipe 4, and a first limiting step 18 for abutting against the inner end of the first flange 17 is provided on the detection pipe 4, a second flange 19 is welded at both ends of the regulating valve body 11, and a second limiting step 20 for abutting against the inner end of the second flange 19 is provided on the regulating valve body 11, and the first flange 17 at the outlet end of the detection pipe 4 and the second flange 19 at the inlet end of the regulating valve body 11 are detachably connected together by bolts 21. This design is not only conducive to early assembly, but also conducive to later disassembly and maintenance operations.

[0035] As attached Figure 1 As shown, the outer end of the first flange 17 is provided with a positioning groove 22, and the outer end of the second flange 19 is provided with a positioning protrusion 23 that fits with the positioning groove 22. Positioning the first flange 17 and the second flange 19 is conducive to the connection of the bolts 21, and further facilitates the early assembly operation.

[0036] This application integrates flowmeter, intelligent control system, flow monitoring, pressure monitoring, and temperature monitoring system. The desired flow value can be set arbitrarily within the measuring range of the device. By comparing the deviation between the detected signal and the set value, the control system (intelligent volume corrector 3) and the actuator (control valve actuator 12) automatically adjust the flow size, so that the flow or temperature in the pipeline is always maintained at the set value, ensuring the accuracy of the flow or temperature. In addition, by detecting the electrode, the conductivity of the medium is measured, and the current medium type is identified as water or CO2 according to the conductivity. Then, the corresponding algorithm is called according to different media, and water and carbon dioxide in various phases (supercritical, dense phase, gas phase, liquid item) are measured separately, thereby realizing online monitoring and control. It is suitable for the automatic control of the constant flow regulation process of pipeline liquid and online temperature and pressure monitoring, meeting the needs of different application scenarios, and solving the technical problems of poor gas-liquid mixed transmission effect and low injection efficiency in the existing oil field CO2 online monitor.

Claims

1. An online monitor for simultaneous measurement and control of water and carbon dioxide, characterized in that: It comprises a detection module (1) and an adjustment module (2), The detection module (1) comprises an intelligent volume corrector (3) and a detection pipeline (4), wherein a vortex generator (5) is installed in the detection pipeline (4), and a detection mounting seat (6) is provided on the upper part of the detection pipeline (4), and a pressure sensor assembly (7), a flow sensor assembly (8), a temperature sensor assembly (9) and a medium identification sensor (10) are installed on the detection mounting seat (6), and the detection ends of the pressure sensor assembly (7), the flow sensor assembly (8), the temperature sensor assembly (9) and the medium identification sensor (10) extend into the inner cavity of the detection pipeline (4), and the output ends of the pressure sensor assembly (7), the flow sensor assembly (8), the temperature sensor assembly (9) and the medium identification sensor (10) are connected to the intelligent volume corrector (3) through a wire; The regulating module (2) comprises a regulating valve body (11), a control valve actuator (12), a valve stem (13) and a regulating valve core (14); the control valve actuator (12) is mounted on the upper part of the regulating valve body (11); the valve stem (13) is arranged through the regulating valve body (11); the upper end of the valve stem (13) is linked to the output end of the control valve actuator (12); the lower end of the valve stem (13) is linked to the regulating valve core (14) arranged inside the regulating valve body (11), and is used to control the flow rate of the internal flow channel of the regulating valve body (11); The outlet end of the detection pipeline (4) is connected to the inlet end of the regulating valve body (11), and the input end of the control valve actuator (12) is connected to the intelligent volume corrector (3) through a wire.

2. The online monitor for simultaneous measurement and control of water and carbon dioxide according to claim 1, characterized in that: A liner tube (15) is welded on the inner wall of the detection pipeline (4), and the vortex generating body (5) is welded inside the liner tube (15).

3. The online monitor for simultaneous measurement and control of water and carbon dioxide according to claim 1, characterized in that: The detection module (1) further comprises a dust cover (16), the lower end of the dust cover (16) being mounted on the detection mounting seat (6), the intelligent volume corrector (3) being mounted on the upper end of the dust cover (16), and the dust cover (16) enclosing the pressure sensor assembly (7), the flow sensor assembly (8), the temperature sensor assembly (9) and the medium identification sensor (10) inside.

4. The online monitor for simultaneous measurement and control of water and carbon dioxide according to claim 1, characterized in that: A first flange (17) is welded to each of the two ends of the detection pipeline (4), and a first limiting step (18) is provided on the detection pipeline (4) for abutting against the inner end of the first flange (17). A second flange (19) is welded to each of the two ends of the regulating valve body (11), and a second limiting step (20) is provided on the regulating valve body (11) for abutting against the inner end of the second flange (19). The first flange (17) at the outlet end of the detection pipeline (4) and the second flange (19) at the inlet end of the regulating valve body (11) are detachably connected together by bolts (21).

5. The online monitor for simultaneous measurement and control of water and carbon dioxide according to claim 4, characterized in that: The outer end of the first flange (17) is provided with a positioning groove (22), and the outer end of the second flange (19) is provided with a positioning protrusion (23) that fits with the positioning groove (22).

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