Injection-production bidirectional isolation conversion Y-shaped device

Abstract

The utility model discloses an injection-production bidirectional isolation conversion Y-shaped device which comprises a body. The main channel is formed in the axial direction of one side of the body; the side channel is formed in the other side of the body, one end of the side channel is of a closed structure, and the side channel communicates with the main channel; the sliding sleeve is coaxially arranged in the main channel and can move up and down along the main channel; the shearing ring is arranged in the main channel and is fixedly arranged at one end of the sliding sleeve; the supporting seat is arranged in the main channel and is fixedly arranged at the other end of the sliding sleeve; the shearing disc is arranged between the sliding sleeve and the supporting seat; the circular bead is arranged at the upper part of the main channel; and the step is arranged at the lower part of the main channel. Through selective communication or closing of the main channel and the side channel, early-stage liquid drainage and later-stage water injection can be carried out on the same well, later-stage investment is reduced, and the production efficiency of an oil and gas field is improved.

Description

Technical Field

[0001] The utility model relates to an injection-production bidirectional isolation conversion Y-type device, belonging to the technical field of underground oil and gas production. Background Art

[0002] In the current oil and gas field industry, branch wells are also a measure to increase production. For example, when a branch structure is required in a well, a tool is needed to sequentially extract the oil from each branch of the well. However, most of the tools currently used are complex in structure, difficult to operate, and have a slow extraction speed. Many of them rely on wireline operations in the later stages, and wireline operations cannot be performed in highly deviated well conditions. From the above, it can be seen that it is necessary to provide a simple and easy-to-operate injection and production bidirectional isolation conversion Y-type device to connect to the oil pipe. The flow rate of this connector is large, which can improve the efficiency of extraction and can also be used in highly deviated well conditions. There is no need to rely on wireline operations in the later stages, which improves operation efficiency and reduces resource waste. Utility Model Content

[0003] The utility model designs and develops a Y-type injection-production bidirectional isolation conversion device, which can implement early drainage and late water injection for the same well by selectively connecting or closing the main channel and the side channel, reducing the late investment and improving the production efficiency of the oil and gas field.

[0004] The technical solution provided by this utility model is:

[0005] A Y-type injection-production bidirectional isolation conversion device, comprising:

[0006] ontology;

[0007] a main channel, which is opened axially along one side of the body;

[0008] a side channel, which is opened on the other side of the body and has a closed structure at one end and is connected to the main channel;

[0009] a sliding sleeve coaxially disposed in the main channel and capable of moving up and down along the main channel;

[0010] a shear ring, which is disposed in the main channel and fixedly disposed at one end of the sliding sleeve;

[0011] a support seat, which is disposed in the main channel and fixedly disposed at the other end of the sliding sleeve;

[0012] The shear disc is arranged between the sliding sleeve and the support seat.

[0013] Preferably, it also includes:

[0014] a shoulder disposed at an upper portion of the main channel;

[0015] A step is provided at the lower portion of the main channel.

[0016] Preferably, it also includes:

[0017] At least two screw holes are respectively radially opened on the shear ring;

[0018] at least two fixing grooves, each of which is radially formed on the outer wall of the sliding sleeve;

[0019] At least two shear screws have one end passing through the screw hole and then fixed in the fixing groove.

[0020] Preferably, it also includes:

[0021] A plurality of first sealing rings, which are respectively arranged on the upper portion of the sliding sleeve and the lower portion of the support seat;

[0022] At least two second sealing rings are arranged on the inner wall of the body.

[0023] Preferably, the sliding sleeve is threadedly connected to the support seat.

[0024] Preferably, a communicating hole is formed on a side of the sliding sleeve facing the side channel, so that the main channel is connected to the side channel.

[0025] Preferably, it also includes:

[0026] Body through grooves, which are opened along both sides of the body;

[0027] A connecting screw has one end which passes through the through slot of the body and is fixed on the body.

[0028] Preferably, both ends of the body are connected to the oil pipe, and the other end of the side channel is connected to the electric submersible pump.

[0029] The beneficial effects of the present invention are as follows:

[0030] The utility model provides a Y-shaped device for bidirectional isolation conversion between injection and production, featuring a rational structural design, convenient use, simple operation, and safety and reliability. It can be used in the same well for both initial drainage and subsequent water injection, reducing subsequent investment and costs. This tool can be used in both conventional and highly deviated wells, improving oil and gas field production efficiency, while also being easy to operate and low in operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural schematic diagram of the injection-production bidirectional isolation conversion Y-type device described in the present invention.

[0032] Figure 2This is an AA cross-sectional view of the injection-production bidirectional isolation conversion Y-type device of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0034] like Figure 1-2 As shown, the utility model provides a Y-type injection-production bidirectional isolation conversion device, including: a body 1, a shear ring 2, a shear screw 3, a first sealing ring 4, a sliding sleeve 5, a shear disc 6, a second sealing ring 7, a support seat 8 and a connecting screw 9.

[0035] The main body 1 is an integrated Y-shaped structure. A main channel is opened axially on one side of the main body 1, and a side channel is opened on the other side of the main body 1. The main channel and the side channel are connected to each other. The sliding sleeve 5 is coaxially arranged in the main channel and can move up and down along the main channel. In the main channel, the shear ring 2 is fixedly set at one end of the sliding sleeve 5, the support seat 8 is set at the other end of the sliding sleeve, and the shear disk 6 is set between the sliding sleeve 5 and the support seat 8.

[0036] The main body 1 has three oil pipe threaded interfaces. The two ends of the main channel are connected to the oil pipes respectively. One end of the side channel is a closed structure, and the other end of the side channel is connected to the electric submersible pump. A connecting hole is opened between the side channel and the main channel, connecting the main channel and the side channel. A shoulder is set at one end of the main channel and a limited step is set at the other end. A sealing surface is designed inside the main body for later sealing of the main channel or the main channel and the side channel. The sealing surface is designed inside the main body to achieve sealing between the sliding sleeve and the support seat; through grooves are opened on both sides of the main body for assembling cables and pipelines;

[0037] The shear ring 2 is assembled in the upper part of the body, and a positioning surface matching the shear ring 2 is provided on the body 1 for fixing the shear ring 2; a screw hole is provided on the shear ring 2 for fixing the sliding sleeve, specifically including: at least two screw holes are provided in the radial direction on the shear ring 2, the sliding sleeve 5 is assembled in the body, and a sealing surface is provided at one end for later backup; a fixing groove is provided on the outer wall of one end of the sliding sleeve 5, and cooperates with the screw hole, and one end of the shear screw 3 is fixed in the fixing groove after passing through the screw hole, connecting the sliding sleeve 5 with the shear ring so that the sliding sleeve 5 is suspended on the upper part of the body 1. When the shear screw 3 is cut off, the sliding sleeve 5 can move from the upper part of the body to the lower part of the body under a certain pressure; the shear ring 2 is a boss structure, and cooperates with the shoulder at one end of the main channel to limit and prevent the sliding sleeve 5 from moving downward.

[0038] Multiple first sealing rings 4 are respectively arranged on the upper part of the sliding sleeve 5 and the lower part of the support seat 8, and at least two second sealing rings are matched and arranged on the inner wall of the body 1 to form a sealed cavity between the sliding sleeve 5, the support seat 8 and the body.

[0039] In the present invention, as a preference, the number of the first sealing rings 4 is four, of which two are provided on the upper part of the sliding sleeve 5 and two are provided on the lower part of the support seat 8, and the number of the second sealing ring 7 is one.

[0040] The sliding sleeve 5 is threadedly connected to the support base 8. The main body 1 features through-slots on both sides for attaching cables. One end of the connecting screw 9 passes through the through-slots and secures to the main body 1, preventing the cables from moving underground. A shear disc 6 is installed between the sliding sleeve 5 and the support base 8. When the shear disc 6 is sheared, the main oil pipeline channel is opened, while the electric pump side is closed. As the sliding sleeve 5 moves downward, the support base 8 becomes locked onto the step in the main body 1, securing the sliding sleeve 5 at the lower end of the main body 1.

[0041] The assembly process of the utility model injection-production bidirectional isolation conversion Y-type device:

[0042] First, install the second sealing ring 7 in the sealing groove of the main body 1, and place the main body 1; install the first sealing ring 4 on the sliding sleeve 5, and then install the first sealing ring 4 on the support seat 8, and place the shear disk 6 in the inner hole at the other end of the sliding sleeve 5. At this time, first connect the support seat 8 to the other end of the sliding sleeve 5, and press the shear disk 6 by the connection force between the sliding sleeve 5 and the support seat 8; put the shear ring 2 on the upper end of the sliding sleeve 5, and then fix it with the shear screw 3. The number of shear screws 3 can be selected according to requirements; finally, vertically install the sliding sleeve component into the main body, so that the shear ring 2 is limited to the step on the upper part of the main body 1, and then install the hexagonal cylindrical head connecting screw 9 on the main body, and the injection and production bidirectional isolation conversion Y-type device is installed.

[0043] As a preferred embodiment in the present invention, the number of the shear screws 3 is two.

[0044] The use method of the utility model injection and production bidirectional isolation conversion Y-type device:

[0045] When the tubing is to be lowered, the injection-production bidirectional isolation conversion Y-type device is connected to a preset position, connected to the corresponding oil pipe and electric submersible pump, and lowered together with the tubing to the required position in the well; initially, the main channel and the side channel are connected, and the fluid can enter the main channel through the connecting hole of the main body through the groove of the sliding sleeve 5. Since there is a shear disk 6 at the bottom of the main channel for sealing, the fluid can only flow upward. When the side channel needs to be closed, the shear screw 3 is cut by pressure, the sliding sleeve 5 moves downward, the main body 1 is limited, and the pressure is continued to increase to break the shear disk 6, the main channel is opened, and the side channel is sealed; if the sliding sleeve 5 has not reached the position after the shear disk breaks, the soluble ball can be continued to be thrown into the upper end of the sliding sleeve, and the pressure can be continued to increase to move the sliding sleeve 5 downward; the fluid can only flow upward through the main channel to achieve the design purpose and function of the injection-production bidirectional isolation conversion Y-type device, and the whole process does not require wireline operation.

[0046] The Y-shaped device for bidirectional injection and production isolation conversion provided by the utility model has a reasonable structural design and stable and reliable performance. It can be used to implement early drainage and later water injection in the same well, reducing later investment and costs. It has strong applicability and is suitable for promotion and application.

[0047] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A Y-type device for bidirectional isolation conversion of injection and production, characterized in that: include: ontology; a main channel, which is opened axially along one side of the body; a side channel, which is opened on the other side of the body and has a closed structure at one end and is connected to the main channel; a sliding sleeve coaxially disposed in the main channel and capable of moving up and down along the main channel; a shear ring, which is disposed in the main channel and fixedly disposed at one end of the sliding sleeve; a support seat, which is disposed in the main channel and fixedly disposed at the other end of the sliding sleeve; The shear disc is arranged between the sliding sleeve and the support seat.

2. The injection-production bidirectional isolation conversion Y-type device according to claim 1 is characterized in that: Also includes: a shoulder disposed at an upper portion of the main channel; A step is provided at the lower portion of the main channel.

3. The injection-production bidirectional isolation conversion Y-type device according to claim 2 is characterized in that: Also includes: At least two screw holes are respectively radially opened on the shear ring; at least two fixing grooves, each of which is radially formed on the outer wall of the sliding sleeve; At least two shear screws have one end passing through the screw hole and then fixed in the fixing groove.

4. The injection-production bidirectional isolation conversion Y-type device according to claim 3 is characterized in that: Also includes: A plurality of first sealing rings, which are respectively arranged on the upper portion of the sliding sleeve and the lower portion of the support seat; At least two second sealing rings are arranged on the inner wall of the body.

5. The injection-production bidirectional isolation conversion Y-type device according to claim 4 is characterized in that: The sliding sleeve is threadedly connected to the support seat.

6. The injection-production bidirectional isolation conversion Y-type device according to claim 5 is characterized in that: A communication hole is formed on a side of the sliding sleeve facing the side channel, so that the main channel is connected with the side channel.

7. The injection-production bidirectional isolation conversion Y-type device according to claim 6 is characterized in that: Also includes: Body through grooves, which are opened along both sides of the body; A connecting screw has one end which passes through the through slot of the body and is fixed on the body.

8. The injection-production bidirectional isolation conversion Y-type device according to claim 7 is characterized in that: Both ends of the body are connected to the oil pipe, and the other end of the side channel is connected to the electric submersible pump.

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