Interlayer unidirectional flow producer

Abstract

The utility model provides a kind of interlayer unidirectional flow production device, belong to petroleum exploitation equipment technical field.The existing production equipment cannot effectively realize the problem of unidirectional flow control, interlayer switching operation complex.It includes upper joint and lower joint, the upper joint is connected with lower joint, the upper joint and lower joint inside are mutually communicated with inside passage, one-way valve structure is provided in the lower joint, the one-way valve structure includes valvular spring and valvular ball, flow channel is opened in the lower joint, the flow channel is mutually communicated with inside passage, the valvular spring one end is connected with upper joint, other end is connected with valvular ball, the valvular ball is located in flow channel inner end portion.It is mainly used for interlayer oil production.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil extraction equipment, and in particular relates to an inter-layer unidirectional flow production device. Background Technology

[0002] In the process of oil extraction, it is often necessary to extract oil from different formations separately in order to improve oil production efficiency and oil quality. However, existing extraction devices often suffer from problems such as unstable fluid flow and backflow when extracting oil between formations, resulting in unsatisfactory oil production results. Utility Model Content

[0003] In view of this, the present invention aims to propose an interlayer unidirectional flow extractor to solve the problems of existing extraction equipment being unable to effectively achieve unidirectional flow control and complex interlayer switching operations.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an interlayer unidirectional flow collector, wherein the interlayer unidirectional flow collector is disposed within a casing, the interlayer unidirectional flow collector includes an upper connector and a lower connector, the upper connector and the lower connector are connected, the upper connector and the lower connector have interconnected internal channels, the lower connector is provided with a one-way valve structure, the one-way valve structure includes a valve spring and a valve ball, the lower connector has a flow channel, the flow channel is interconnected with the internal channel, one end of the valve spring is connected to the upper connector, and the other end is connected to the valve ball, the valve ball is located at the inner end of the flow channel.

[0005] Furthermore, a spring washer is provided on the inner end face of the upper connector, and the valve spring is connected to the spring washer.

[0006] Furthermore, sealing rings are provided on the sides of the upper and lower connectors.

[0007] Furthermore, the number of sealing rings is multiple.

[0008] Furthermore, the number of check valve structures is multiple, and the multiple check valve structures are arranged circumferentially along the lower connector.

[0009] Furthermore, a ball groove is provided at the inner end of the flow channel, and the ball groove abuts against the valve ball.

[0010] Furthermore, the upper and lower connectors are made of 35CrMo alloy steel.

[0011] Furthermore, there is a gap between the interlayer unidirectional flow extractor and the casing.

[0012] Furthermore, the upper connector is connected to the upper end of the oil pipe inside the oil well.

[0013] Furthermore, the lower connector is connected to the lower end of the oil pipe inside the oil well.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: The inter-layer unidirectional flow production device provided by this invention effectively solves the problem of unstable fluid flow direction in existing technologies through a one-way valve structure. It ensures that the fluid can only flow unidirectionally from the produced layer towards the tubing. During the upstroke of the well, the fluid pressure pushes the valve ball to compress the spring, smoothly opening the channel; while during the downstroke or well shut-in state, the valve spring and the pressure inside the tubing work together to promptly close the channel, completely preventing backflow. This improves the stability of the oil production process, avoids inter-layer fluid mixing or efficiency loss caused by backflow, thereby maintaining crude oil quality and optimizing recovery efficiency.

[0015] This invention simplifies component layout and operation procedures, enabling rapid and accurate switching between oil production channels in different layers. During oil production operations, operators can achieve precise control of the target layer without complex adjustments, significantly reducing the difficulty and time cost of switching operations and improving overall work efficiency. This highly efficient switching capability not only reduces the frequency of manual intervention but also enhances the continuity and reliability of oil well production, providing a practical and economical solution for stratified oil production. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0017] Figure 1 This is a cross-sectional structural diagram of an interlayer unidirectional flow extractor according to the present invention;

[0018] Figure 2 This is a half-section diagram of the interlayer unidirectional flow extractor of the present invention.

[0019] In the picture:

[0020] 1-Upper connector, 2-Spring washer, 3-Val spring, 4-Lower connector, 5-Sealing ring, 6-Val ball, 7-Sleeve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0022] See Figure 1-2This embodiment describes an interlayer unidirectional flow collector, which is disposed within a casing 7. The interlayer unidirectional flow collector includes an upper connector 1 and a lower connector 4, which are connected. The upper connector 1 and the lower connector 4 have interconnected internal channels. The lower connector 4 is equipped with a one-way valve structure, which includes a valve spring 3 and a valve ball 6. The lower connector 4 has a flow channel that is interconnected with the internal channels. One end of the valve spring 3 is connected to the upper connector 1, and the other end is connected to the valve ball 6, which is located at the inner end of the flow channel.

[0023] In this embodiment, a spring washer 2 is provided on the inner end face of the upper connector 1. One end of the valve spring 3 abuts against the spring washer 2, and the other end supports the valve ball 6. Multiple sealing rings 5 ​​are provided on the sides of the upper connector 1 and the lower connector 4. Multiple sets of one-way valve structures are arranged circumferentially along the lower connector 4. A ball groove is opened at the inner end of the flow channel, and the ball groove mates with the valve ball 6. The upper connector 1 and the lower connector 4 are made of 35CrMo alloy steel, possessing good sealing performance and pressure resistance. A gap exists between the interlayer one-way flow production device and the casing 7. The upper connector 1 connects to the upper end of the tubing inside the well, ensuring a sealed connection. The lower connector 4 connects to the lower end of the tubing inside the well, ensuring a sealed connection.

[0024] Upstroke stage: The pressure inside the tubing decreases. At this time, the pressure of the produced fluid acts on the valve ball 6. When this pressure is greater than the elastic force of the valve spring 3, the valve ball 6 is pushed open and compresses the valve spring 3. The fluid enters the tubing through the internal channel and is lifted to the wellhead.

[0025] Downstroke phase: Pressure inside the oil pipe rises. The valve spring 3 and the pressure inside the oil pipe work together on the valve ball 6 to prevent liquid from entering the annular space of the oil sleeve 7.

[0026] Well shut-in status: Valve spring 3 presses down valve ball 6, preventing liquid from entering the tubing in the annular space of oil sleeve 7, thus avoiding interlayer backflow.

[0027] When the well fluid pressure in casing 7 is greater than the elastic force of valve spring 3 in lower connector 4, valve ball 6 is pushed open, allowing well fluid to enter the tubing through the one-way valve structure and then be delivered to the surface oil production equipment. When the well fluid pressure in casing 7 is less than the elastic force of valve spring 3 in lower connector 4, valve ball 6 remains stationary under the action of valve spring 3, closing the one-way valve structure and preventing well fluid backflow.

[0028] The specific embodiments of this utility model disclosed above are merely illustrative of the present utility model. These specific embodiments do not exhaustively describe all details, nor do they limit the utility model to only the described embodiments. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A unidirectional flow extractor between layers, characterized in that: The interlayer unidirectional flow collector is installed inside the casing (7). The interlayer unidirectional flow collector includes an upper connector (1) and a lower connector (4). The upper connector (1) is connected to the lower connector (4). The upper connector (1) and the lower connector (4) have interconnected internal channels. The lower connector (4) is equipped with a one-way valve structure. The one-way valve structure includes a valve spring (3) and a valve ball (6). The lower connector (4) has a flow channel. The flow channel is interconnected with the internal channel. One end of the valve spring (3) is connected to the upper connector (1), and the other end is connected to the valve ball (6). The valve ball (6) is located at the inner end of the flow channel. The upper connector (1) is provided with a spring washer (2) on its inner end face, and the valve spring (3) is connected to the spring washer (2); The number of check valve structures is multiple, and the multiple check valve structures are arranged circumferentially along the lower connector (4). The inner end of the flow channel is provided with a ball groove, which is engaged with the valve ball (6).

2. The interlayer unidirectional flow extractor according to claim 1, characterized in that: The upper connector (1) and the lower connector (4) are provided with sealing rings (5) on their sides.

3. The interlayer unidirectional flow extractor according to claim 2, characterized in that: The number of sealing rings (5) is multiple.

4. The interlayer unidirectional flow extractor according to claim 1, characterized in that: The upper connector (1) and lower connector (4) are made of 35CrMo alloy steel.

5. The interlayer unidirectional flow extractor according to claim 1, characterized in that: There is a gap between the interlayer unidirectional flow extractor and the casing (7).

6. The interlayer unidirectional flow extractor according to claim 1, characterized in that: The upper connector (1) is connected to the upper end of the oil pipe inside the oil well.

7. The interlayer unidirectional flow extractor according to claim 1, characterized in that: The lower connector (4) is connected to the lower end of the oil pipe inside the oil well.

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