Multifunctional intelligent switch device for oil-water well pipe column

Abstract

The application discloses an oil-water well pipe column multifunctional intelligent switch device and belongs to the technical field of switch devices. The device comprises a device shell, a control valve for opening and closing a through hole of the device shell is arranged at the through hole, an electric switch for controlling the control valve is sealed in a shell wall of the device shell, the electric switch is connected with a signal transmitter a, the signal transmitter a is connected with a signal receiver a, the signal receiver a is connected with a control system through a plurality of signal transmission devices, and a liquid level proximity sensor connected with the signal transmission devices is further arranged in the shell wall. The application has the beneficial effects of good plug-removing effect, reduced pump replacement stop frequency, reduced yield reduction phenomenon caused by pump replacement stop, reduced pump replacement operation cost, increased yield and efficiency.

Description

Technical Field

[0001] This invention relates to a multifunctional intelligent switching device for oil and water well tubing, belonging to the field of switching device technology. Background Technology

[0002] Pump inspection is a crucial step in oil production, aiming to lower the pump into the well to establish circulation and extract crude oil. From a production process perspective, the pump consists of four parts: the working barrel, piston, traveling valve, and stationary valve. During the upstroke, the stationary valve opens and the traveling valve closes, allowing fluid to enter the pump. During the downstroke, the piston moves downward, the traveling valve opens, and the stationary valve closes, discharging fluid from the pump into the tubing. To ensure successful extraction of crude oil during both strokes, the stationary valve is designed with a one-way inlet structure to guarantee a tight seal within the tubing. This means that during well flushing, only backwashing from outside the tubing is possible; forward flushing is not possible. When wax buildup or blockage occurs inside the working barrel, a pump inspection and re-establishment of circulation is necessary.

[0003] In terms of well workover technology, when running production tubing, an oil drainer is installed above the pump in advance so that crude oil in the tubing can be drained during pump inspection operations, preventing crude oil and other liquids in the tubing from being carried to the surface and polluting the environment.

[0004] When an oil pump experiences severe wear and reduced production capacity, it needs to be restarted and replaced. Before pump inspection, oil drainage is required. Commonly used oil drainers include baffle drainers, sliding sleeve drainers, lift-up drainers, impact drainers, and rotary drainers. Frequent pump shutdowns, such as those for pump replacement, result in significant production losses.

[0005] When the working barrel of an oil pump becomes clogged with sand or wax, crude oil cannot be pumped out. Usually, a small repair team needs to use backwashing to remove the blockage from the pump. However, the blockage is often most firmly deposited at the bottom, and due to the influence of the bottom fixed valve, the flushing fluid injected during reverse circulation has insufficient force, leading to unblocking failure. Summary of the Invention

[0006] This invention provides another multi-functional intelligent switching device for oil and water well tubing strings to improve the stable production cycle and unblocking efficiency.

[0007] The technical solution of the present invention is: a multi-functional intelligent switch device for oil and water well tubing, including a device housing, a control valve for opening and closing the through hole of the device housing, an electric switch for controlling the control valve sealed in the shell wall of the device housing, the electric switch being connected to a signal transmitter a, the signal transmitter a being connected to a signal receiver a, the signal receiver a being connected to a control system through several signal transmission devices, and a liquid level proximity sensor connected to the signal transmission devices being provided in the shell wall.

[0008] The top of the device housing is connected to an oil pipe, and the bottom of the device housing is connected to an oil pump.

[0009] The top of the device housing is provided with a female buckle, and the top of the device housing is threadedly connected to the oil pipe through the female buckle.

[0010] The bottom of the device housing is provided with a male buckle, and the bottom of the device housing is threadedly connected to the oil pump through the male buckle.

[0011] The signal transmission device includes a signal receiver b and a signal transmitter a disposed inside the pipe wall.

[0012] The oil pipe wall is also sealed with a battery pack b for powering the signal receiver b and the signal transmitter b.

[0013] The housing also contains a battery pack a that powers the signal transmitter a, the signal receiver a, and the electric switch.

[0014] The control valve is an electric valve.

[0015] The distance between adjacent signal transmission devices is 100 meters.

[0016] The beneficial effects of this invention are:

[0017] (1) From the perspective of oil production, it has improved the stable production cycle of crude oil.

[0018] (2) From the perspective of work, it improves work efficiency.

[0019] (3) When the oil pump is blocked, the valve of the electric switch device is opened to form a positive circulation well washing, which makes the blockage more effectively washed out.

[0020] (4) It has a good unblocking effect, reduces the frequency of pump replacement and other shutdowns, reduces the production reduction caused by pump replacement and other shutdowns, and reduces pump replacement operation costs, thus increasing production and efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an electric switchgear;

[0022] Figure 2 This is a top view of an electric switchgear.

[0023] Figure 3 This is a structural diagram of a signal transmission device;

[0024] Figure 4 This is a top view of the signal transmission device.

[0025] The following labels are used in the attached diagram: 1. Shell wall, 2. Control valve, 3. Electric switch, 4. Liquid level proximity sensor, 5. Signal receiver a, 6. Battery pack b, 7. Female connector, 8. Male connector, 9. Signal receiver b, 10. Signal transmitter b. Detailed Implementation

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0030] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described in detail below: This application will be further described and illustrated by taking this as an example.

[0031] Example 1

[0032] A multi-functional intelligent switching device for oil and water well tubing includes a housing with an outer diameter of 87mm, an inner diameter of 62mm, and a wall thickness of 25mm. An oil pipe is connected to the top of the housing, and an oil pump is connected to the bottom. A control valve 2, an electric valve, is installed at a through-hole in the housing. An electric switch 3, controlling the control valve 2, is installed within the wall of the housing. The electric switch is connected to a signal transmitter a, which is connected to a signal receiver a5. The signal receiver a is wirelessly connected to a control system located on the ground via several signal transmission devices. A liquid level proximity sensor 4, connected to the signal transmission devices, is also installed within the wall of the housing. The liquid level proximity sensor 4 detects whether liquid is passing through, thereby determining whether oil production is normal. A battery pack a, used to power the signal transmitter a, the signal receiver a5, and the electric switch 3, is also sealed inside the wall of the housing. The electric switch 3, the liquid level proximity sensor 4, the signal transmitter a, and the signal receiver a5 are all sealed within the wall of the housing.

[0033] Example 2

[0034] As a supplement to Embodiment 1, an oil pipe is threadedly connected to the top of the outer casing, and an oil pump is threadedly connected to the bottom of the outer casing, thereby achieving detachability. Specifically, the top of the outer casing is provided with a female threaded connection 7, which is threadedly connected to the oil pipe. The bottom of the outer casing is provided with a male threaded connection 8, which is threadedly connected to the oil pump.

[0035] Example 3

[0036] As a supplement to Embodiment 1, the signal transmission device includes a signal receiver b9 and a signal transmitter b10 sealed within the wall of the oil pipe. A battery pack b6 for powering the signal receiver b and the signal transmitter b is also sealed within the oil pipe wall. The distance between adjacent signal transmission devices is 100 meters to ensure that the signal transmitter b10 can successfully transmit signals to the signal receiver b9 of the adjacent signal transmission device.

[0037] Example 4

[0038] A liquid level proximity sensor detects whether liquid oil is passing through to determine if oil production is normal. When no liquid oil passes through, indicating abnormal oil production, a signal is sent to the surface control system. The surface control system then sends a command to the electric switch via signal receiver a, instructing the electric switch to open the electric valve and establish a positive circulation well-washing channel. The command from the surface control system is transmitted through several signal transmission devices, including signal transmitter b10 and signal receiver b9, and finally reaches signal receiver a5. Signal receiver a5 then sends the command signal to electric switch 3 via signal transmitter a. Electric switch 3 executes the opening or closing command of the electric valve, and the electric valve performs the specific action.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A multi-functional intelligent switching device for oil and water well tubing, characterized in that, The device includes a housing, with a control valve (2) for opening and closing the through hole in the housing. An electric switch (3) for controlling the control valve (2) is sealed in the housing wall (1). The electric switch is connected to a signal transmitter a, which is connected to a signal receiver a (5). The signal receiver a is connected to the control system through several signal transmission devices. A liquid level proximity sensor (4) connected to the signal transmission devices is also provided in the housing wall (1). The top of the housing is connected to an oil pipe, and the bottom of the housing is connected to an oil pump. The signal transmission devices include a signal receiver b and a signal transmitter a installed in the wall of the oil pipe. A battery pack a is also sealed in the housing wall (1) to supply power to the signal transmitter a, the signal receiver a (5), and the electric switch (3). The liquid level proximity sensor detects whether liquid oil is passing through. When no liquid oil passes through, i.e., when oil production is abnormal, it sends a signal to the ground control system. The ground control system sends a command to the electric switch through the signal receiver a, ordering the electric switch to open the electric valve and establish a positive circulation well washing channel.

2. The multi-functional intelligent switching device for oil and water well tubing as described in claim 1, characterized in that, The top of the device housing is provided with a female buckle (7), and the top of the device housing is threadedly connected to the oil pipe through the female buckle (7).

3. The multi-functional intelligent switching device for oil and water well tubing according to claim 1, characterized in that, The bottom of the device housing is provided with a male buckle (8), and the bottom of the device housing is threadedly connected to the oil pump through the male buckle (8).

4. The multi-functional intelligent switching device for oil and water well tubing according to claim 1, characterized in that, The pipe wall is also sealed with a battery pack b(6) for powering the signal receiver b(9) and the signal transmitter b(10).

5. The multi-functional intelligent switching device for oil and water well tubing according to claim 1, characterized in that, The control valve (2) is an electric valve.

6. The multi-functional intelligent switching device for oil and water well tubing according to claim 1, characterized in that, The distance between adjacent signal transmission devices is 100 meters.

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