Injection device for fracturing tracer agent

Abstract

The utility model provides an injection device for fracturing tracers, which relates to the field of injection equipment for fracturing tracers and comprises a frame, an injection component is mounted in an inner cavity of the frame and used for conveying fracturing tracers, and a monitoring component is mounted on the surface of the injection component and used for monitoring the fracturing tracers. The monitoring assembly is used for monitoring fracturing tracer agent injection metering and comprises a PLC control cabinet, an electromagnetic liquid level meter, a first electric valve, a first flow meter, a second electric valve, a second flow meter, an audible and visual alarm and a liquid crystal display. Through cooperation of the PLC control cabinet, the electromagnetic liquid level meter, the first electric valve, the first flow meter, the second electric valve, the second flow meter, the audible and visual alarm and the liquid crystal display, the injection amount of a tracer agent can be monitored in real time, so that accurate injection of the tracer agent can be achieved, uniform distribution of the tracer agent in an oil and gas reservoir is ensured, and the oil and gas reservoir quality is improved. And the fracturing effect and the fluid flowing path can be accurately monitored.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fracturing tracer injection equipment field, specifically, it is a kind of fracturing tracer injection device. BACKGROUND

[0002] In the oilfield exploitation process, tracer is widely used to monitor and evaluate fracturing effect, fluid flow path and dynamic change of oil and gas reservoir, and fracturing tracer plays a vital role in oil and gas exploitation, and the uniform distribution of tracer in oil and gas reservoir can be ensured by injection equipment, so as to accurately monitor fracturing effect and fluid flow path;

[0003] According to Chinese patent application No.202220433312.1, a kind of segmented fracturing well tracer injection device is disclosed, including bottom plate, the top of bottom plate is fixedly connected with mixing box, the top of mixing box inner wall is rotatably connected with stirring rod, multiple stirring vanes are fixedly connected with the outside circumferential direction equidistance of stirring rod, the top of bottom plate and located the one side of mixing box is fixedly connected with extraction cylinder, piston is slidably connected in the inside of extraction cylinder, connecting pipe is fixedly connected between extraction cylinder and the bottom of mixing box, by being provided with mixing box with stirring structure and extraction cylinder with piston extraction structure, and drive mechanism is driven in cooperation, tracer can be stirred and mixed in mixing box inside at the same time of tracer injection, avoid the situation of precipitation, thereby greatly improve the use effect of tracer, it is favorable to actual application and operation;

[0004] The prior art effectively solves the problem that the tracer in the container cannot be stirred and mixed during injection, resulting in a large amount of precipitation of the tracer in the container, which reduces the use effect of the injected tracer. The injection device has the advantages of stirring and mixing the tracer in the mixing box at the same time of tracer injection and avoiding precipitation. However, the injection device lacks measurement of injection amount during injection. Excessive injection of tracer will cause excessive diffusion of tracer, and insufficient injection of tracer will cause uneven distribution of tracer, which is not conducive to monitoring fracturing effect.

[0005] Therefore, the utility model provides a fracturing tracer injection device to solve the above problems. Utility model content

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] The utility model provides an injection device for fracturing tracer, including the inner chamber of frame is installed with injection assembly, the surface of injection assembly is installed with monitoring assembly, monitoring assembly is used for monitoring fracturing tracer injection metering, monitoring assembly includes PLC control cabinet, electromagnetic liquid level meter, first electric valve, first flowmeter, second electric valve, second flowmeter, audible -visual annunciator and liquid crystal display, first flowmeter and second flowmeter are used for monitoring fracturing tracer injection amount, electromagnetic liquid level meter is used for monitoring liquid level, first flowmeter and second electric valve are used for controlling injection flow, the output of electromagnetic liquid level meter, first flowmeter and second flowmeter all are connected with the input of PLC control cabinet, and the output of PLC control cabinet is connected with the input of first electric valve, second electric valve, audible -visual annunciator and liquid crystal display respectively.

[0008] Further, in the utility model, the injection assembly includes a storage tank, a delivery pump, a delivery pipe, a communication pipe and an injection pipe, the storage tank and the delivery pump are fixedly connected with the frame, the injection pipe is installed on the top of the storage tank and communicates with the inner chamber of the storage tank, and the input end of the delivery pump is connected with the output end of the PLC control cabinet.

[0009] Further, in the utility model, the two ends of the delivery pipe respectively communicate with the storage tank and the inlet of the delivery pump, and one end of the communication pipe communicates with the outlet of the delivery pump.

[0010] Further, in the utility model, the first electric valve and the first flowmeter are both installed on the surface of the delivery pipe, the electromagnetic liquid level meter is installed on the surface of the storage tank, and the second electric valve and the second flowmeter are both installed on the surface of the communication pipe.

[0011] Further, in the utility model, a stirring assembly is installed on the surface of the storage tank, the stirring assembly includes a servo motor, a speed reducer, a main shaft, a stirring rod and a dispersion disc, the servo motor and the speed reducer are both fixedly connected to the top of the storage tank, and the main shaft, the stirring rod and the dispersion disc are all installed in the inner chamber of the storage tank.

[0012] Further, in the utility model, the output shaft of the servo motor is drivingly connected with the input shaft of the speed reducer, the stirring rod and the dispersion disc are both installed on the surface of the main shaft, and the output shaft of the speed reducer penetrates into the inner chamber of the storage tank and is drivingly connected with the main shaft.

[0013] Beneficial effects, the utility model has following beneficial effects:

[0014] The utility model discloses a storage tank, conveying pump, conveying pipe, communication pipe and injection pipe are set up, have played the effect that can inject tracer, through the cooperation of PLC control cabinet, electromagnetic liquid level meter, first electric valve, first flowmeter, second electric valve, second flowmeter, audible -visual annunciator and LCD display, can real -time monitoring the injection amount of tracer, thereby can realize the accurate injection of tracer, ensure that tracer is evenly distributed in oil and gas reservoir, and then can accurately monitor fracturing effect and fluid flow path, through setting up stirring subassembly, have played the effect that can stir tracer, thereby can prevent the precipitation of tracer and occur, effectively improve the use effect of tracer. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the main view structure schematic drawing of the utility model;

[0016] Figure 2 It is the separation state structure schematic drawing of the injection assembly of the utility model;

[0017] Figure 3 It is the connection state structure schematic drawing of the stirring subassembly of the utility model;

[0018] Figure 4 It is the system flow schematic drawing of the utility model.

[0019] In the drawing:

[0020] 1, frame;2, injection assembly;201, storage tank;202, conveying pump;203, conveying pipe;204, communication pipe;205, injection pipe;3, monitoring assembly;301, PLC control cabinet;302, electromagnetic liquid level meter;303, first electric valve;304, first flowmeter;305, second electric valve;306, second flowmeter;307, audible -visual annunciator;308, LCD display;4, stirring subassembly;401, servo motor;402, speed reducer;403, main shaft;404, stirring rod;405, dispersion disc. DETAILED DESCRIPTION

[0021] In order to more understand the technical content of the utility model, specific embodiment is raised and is explained as follows with the accompanying drawing.The aspects of the utility model are described in the disclosure with reference to the drawings, and many explained embodiments are shown in the drawings.The embodiments of the disclosure are not necessarily defined in all aspects including the utility model.It should be understood that the various concepts and embodiments introduced above, and those concepts and implementation modes described in more detail below can be implemented in any one of many ways, because the concepts and embodiments disclosed by the utility model are not limited to any implementation mode.In addition, some aspects disclosed by the utility model can be used alone, or used in any suitable combination with other aspects disclosed by the utility model.

[0022] Embodiment 1

[0023] As Figures 1-4 shown, the first embodiment of the utility model provides an injection device for fracturing tracer, including frame 1, the inner chamber of frame 1 is equipped with injection assembly 2, injection assembly 2 is used to transport fracturing tracer, the surface of injection assembly 2 is equipped with monitoring assembly 3, monitoring assembly 3 is used to monitor fracturing tracer injection measurement, monitoring assembly 3 includes PLC control cabinet 301, electromagnetic liquid level meter 302, first electric valve 303, first flowmeter 304, second electric valve 305, second flowmeter 306, audible and visual alarm 307 and LCD display 308, first flowmeter 304 and second flowmeter 306 are used to monitor fracturing tracer injection amount, electromagnetic liquid level meter 302 is used to monitor liquid level, first flowmeter 304 and second electric valve 305 are used to control injection flow, the output of electromagnetic liquid level meter 302, first flowmeter 304 and second flowmeter 306 is all connected with the input of PLC control cabinet 301, the output of PLC control cabinet 301 is connected with the input of first electric valve 303, second electric valve 305, audible and visual alarm 307 and LCD display 308 respectively.

[0024] As Figures 1-4 shown, first flowmeter 304 and second flowmeter 306 can all use ZC-LD series, electromagnetic liquid level meter 302 can select YCUHZ-58, PLC control cabinet 301 is composed of PLC host computer, input / output module, power module, communication module etc., can receive the monitoring signal of electromagnetic liquid level meter 302, first flowmeter 304 and second flowmeter 306, and makes corresponding control operation according to monitoring signal, can pre-set tracer injection amount, carries out real-time monitoring to tracer injection amount through first flowmeter 304 and electromagnetic liquid level meter 302, when monitoring set value, stops the transport of injection assembly 2 through PLC control cabinet 301, and closes first electric valve 303 and second electric valve 305, to be able to realize the accurate injection of tracer, ensure the uniform distribution of tracer in oil and gas reservoir, to be able to accurately monitor fracturing effect and fluid flow path, audible and visual alarm 307 can send alarm information in time when low liquid level and injection amount reach in storage tank 201, to be able to remind operating personnel to check in time.

[0025] Embodiment 2

[0026] Referring to Figure 1 , 2 and 4, the second embodiment of the utility model is based on the previous embodiment.

[0027] In the embodiment, the injection assembly 2 comprises a storage tank 201, a delivery pump 202, a delivery pipe 203, a communication pipe 204 and an injection pipe 205, the storage tank 201 and the delivery pump 202 are fixedly connected with the frame 1, the injection pipe 205 is installed on the top of the storage tank 201 and communicates with the inner cavity of the storage tank 201, and the input end of the delivery pump 202 is connected with the output end of the PLC control cabinet 301.

[0028] The two ends of the delivery pipe 203 respectively communicate with the storage tank 201 and the inlet of the delivery pump 202, and one end of the communication pipe 204 communicates with the outlet of the delivery pump 202.

[0029] The first electric valve 303 and the first flow meter 304 are both installed on the surface of the delivery pipe 203, the electromagnetic liquid level meter 302 is installed on the surface of the storage tank 201, and the second electric valve 305 and the second flow meter 306 are both installed on the surface of the communication pipe 204.

[0030] As shown in Figure 1 , 2 and 4, the storage tank 201 is used for storing the tracer, the inner cavity of the storage tank 201 can be supplemented with the tracer through the injection pipe 205, the top of the injection pipe 205 is hingedly connected with a top cover for covering the inner cavity of the injection pipe 205, so as to prevent external dust and other sundries from entering the inner cavity of the storage tank 201 and polluting the tracer, since the tracer delivery requires high pressure, high precision and stability, the delivery pump 202 can be selected from a diaphragm pump, a plunger pump or a peristaltic pump for delivery, the delivery pump 202 extracts the tracer in the inner cavity of the storage tank 201 through the delivery pipe 203 and delivers the tracer to the fractured well through the communication pipe 204, the first flow meter 304 can monitor the outflow of the storage tank 201, the second flow meter 306 can monitor the delivery flow of the delivery pump 202, through the double monitoring of the first flow meter 304 and the second flow meter 306, the error of the tracer injection amount can be reduced, so as to improve the accuracy of the tracer injection amount, the inner cavity of the storage tank 201 can also be installed with a concentration sensor for monitoring the concentration of the tracer, and the liquid level of the storage tank 201 and the tracer injection amount can be displayed in real time through the liquid crystal display 308.

[0031] Embodiment 3

[0032] Referring to Figure 1 and 3 , this is the third embodiment of the utility model, which is based on the first two embodiments.

[0033] In this embodiment, a stirring assembly 4 is installed on the surface of the storage tank 201. The stirring assembly 4 includes a servo motor 401, a reducer 402, a main shaft 403, a stirring rod 404, and a dispersing disk 405. The servo motor 401 and the reducer 402 are both fixed to the top of the storage tank 201, and the main shaft 403, the stirring rod 404, and the dispersing disk 405 are all installed in the inner cavity of the storage tank 201.

[0034] The output shaft of the servo motor 401 is connected to the input shaft of the reducer 402. The stirring rod 404 and the dispersing disc 405 are both mounted on the surface of the main shaft 403. The output shaft of the reducer 402 passes through the inner cavity of the storage tank 201 and is connected to the main shaft 403.

[0035] like Figure 1 and 3 As shown, the output shaft of the servo motor 401 rotates, which drives the main shaft 403 to rotate via the reducer 402. When the main shaft 403 rotates, it drives the stirring rod 404 and the dispersing disk 405 to rotate in the inner cavity of the storage tank 201. This allows the stirring rod 404 and the dispersing disk 405 to stir the tracer in the inner cavity of the storage tank 201. This not only prevents the tracer from settling but also improves the flowability of the tracer, ensuring that the tracer is evenly distributed in the fracturing well, thereby improving the effectiveness of the tracer.

[0036] In use, the delivery pump 202 draws tracer from the inner cavity of the storage tank 201 through the delivery pipe 203 and delivers it to the fracturing well through the connecting pipe 204. The first flow meter 304 can monitor the outflow rate of the storage tank 201, and the second flow meter 306 can monitor the delivery rate of the delivery pump 202. Through the dual monitoring of the first flow meter 304 and the second flow meter 306, the error of the tracer injection amount can be reduced, thereby improving the accuracy of the tracer injection amount. The tracer injection amount is preset, and the injection amount of the tracer is monitored in real time by the first flow meter 304 and the electromagnetic level gauge 302. When the set value is detected, the delivery pump 202 is stopped through the PLC control cabinet 301, and the first electric valve 303 and the second electric valve 305 are closed, thereby achieving precise injection of the tracer, ensuring the uniform distribution of the tracer in the oil and gas reservoir, and thus accurately monitoring the fracturing effect and fluid flow path.

[0037] The output shaft of the servo motor 401 rotates, which drives the main shaft 403 to rotate via the reducer 402. When the main shaft 403 rotates, it drives the stirring rod 404 and the dispersion disk 405 to rotate in the inner cavity of the storage tank 201. This allows the stirring rod 404 and the dispersion disk 405 to stir the tracer in the inner cavity of the storage tank 201. This not only prevents the tracer from settling, but also improves the flowability of the tracer, ensuring that the tracer is evenly distributed in the fracturing well, thereby improving the effectiveness of the tracer.

[0038] The standard parts used in the present application can be purchased from the market, and can be ordered according to the description and drawings, and the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical, part and equipment adopt the conventional type in the prior art, the control mode is automatically controlled through the controller, the control circuit of the controller can be realized through simple programming by the person skilled in the art, which belongs to the common knowledge in the art, and the present application is mainly used to protect the mechanical device, so the control mode and circuit connection will not be explained in detail.

[0039] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application. Those skilled in the art can make various modifications and improvements without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the definition of the claims.

Claims

1. An injection device for fracturing tracers comprising a frame (1), characterized in that: The inner cavity of the frame (1) is provided with an injection assembly (2) for conveying fracturing tracer, the surface of the injection assembly (2) is provided with a monitoring assembly (3) for monitoring fracturing tracer injection metering, the monitoring assembly (3) comprises a PLC control cabinet (301), an electromagnetic liquid level meter (302), a first electric valve (303), a first flowmeter (304), a second electric valve (305), a second flowmeter (306), an audible and visual alarm (307) and a liquid crystal display (308), the first flowmeter (304) and the second flowmeter (306) are used for monitoring fracturing tracer injection amount, the electromagnetic liquid level meter (302) is used for monitoring liquid level, the first flowmeter (304) and the second electric valve (305) are used for controlling injection flow, the output ends of the electromagnetic liquid level meter (302), the first flowmeter (304) and the second flowmeter (306) are connected with the input end of the PLC control cabinet (301), and the output end of the PLC control cabinet (301) is connected with the input ends of the first electric valve (303), the second electric valve (305), the audible and visual alarm (307) and the liquid crystal display (308) respectively.

2. The injection device for fracturing tracer according to claim 1, characterized in that: The injection assembly (2) comprises a storage tank (201), a conveying pump (202), a conveying pipe (203), a communication pipe (204) and an injection pipe (205), the storage tank (201) and the conveying pump (202) are fixedly connected with the frame (1), the injection pipe (205) is installed at the top of the storage tank (201) and communicates with the inner cavity of the storage tank (201), and the input end of the conveying pump (202) is connected with the output end of the PLC control cabinet (301).

3. The injection device for fracturing tracers of claim 2, wherein: The conveying pipe (203) communicates with the inlets of the storage tank (201) and the conveying pump (202) at two ends respectively, and one end of the communication pipe (204) communicates with the outlet of the conveying pump (202).

4. The injection device for fracturing tracers of claim 2, wherein: The first electric valve (303) and the first flowmeter (304) are both installed on the surface of the conveying pipe (203), the electromagnetic liquid level meter (302) is installed on the surface of the storage tank (201), and the second electric valve (305) and the second flowmeter (306) are both installed on the surface of the communication pipe (204).

5. The injection device for fracturing tracers of claim 2, wherein: The surface of the storage tank (201) is provided with a stirring assembly (4), the stirring assembly (4) comprises a servo motor (401), a speed reducer (402), a main shaft (403), a stirring rod (404) and a dispersion disc (405), the servo motor (401) and the speed reducer (402) are both fixed to the top of the storage tank (201), and the main shaft (403), the stirring rod (404) and the dispersion disc (405) are all installed in the inner cavity of the storage tank (201).

6. The injection device for fracturing tracers of claim 5, wherein: The output shaft of the servo motor (401) is in transmission connection with the input shaft of the speed reducer (402), the stirring rod (404) and the dispersion disc (405) are both installed on the surface of the main shaft (403), and the output shaft of the speed reducer (402) penetrates into the inner cavity of the storage tank (201) and is in transmission connection with the main shaft (403).

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