Injection-production bidirectional isolation conversion Y-shaped device

Abstract

The invention 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 invention 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 well conditions are also a measure to increase production. For example, when a branch structure is needed in a well, a tool is needed to sequentially exploit the oil in each branch of the well. However, most of the tools currently used are complex in structure, difficult to operate, and have a slow exploitation speed. Many of them rely on steel wire operations in the later stage, and the steel wire cannot operate in highly inclined well conditions. From the above, it can be seen that it is necessary to provide a simple structure and easy-to-operate injection and production bidirectional isolation conversion Y-type device to connect with the oil pipe. The flow rate of the joint is large, which can improve the efficiency of exploitation. It can also be used in highly inclined well conditions. There is no need to rely on steel wire for operation in the later stage, which improves the operation efficiency and reduces resource waste. Summary of the invention

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

[0004] The technical solution provided by the present invention is:

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

[0006] ontology;

[0007] A main channel, which is opened along the axial direction of 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, which is coaxially disposed in the main channel and can move up and down along the main channel;

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

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

[0012] The shear plate is arranged between the sliding sleeve and the supporting seat.

[0013] Preferably, it also includes:

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

[0015] A step is arranged at the lower part 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, which are respectively radially opened on the outer wall of the sliding sleeve;

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

[0020] Preferably, it also includes:

[0021] A plurality of first sealing rings, which are respectively arranged on the upper part of the sliding sleeve and the lower part of the supporting 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 supporting seat.

[0024] Preferably, a connecting hole is provided on a side of the sliding sleeve facing the side channel, so that the main channel is connected with the side channel.

[0025] Preferably, it also includes:

[0026] A body through groove, which is opened along two sides of the body;

[0027] A connecting screw has one end that passes through the through slot of the main body and is fixed on the main 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:

[0030] The invention provides a Y-type device for injection-production bidirectional isolation conversion, which has a reasonable structural design, is convenient to use, simple to operate, safe and reliable; it can be used in the same well to implement early drainage and later water injection, reducing later investment and reducing costs. The tool can be used not only in conventional well conditions, but also in high-angle well conditions, improving the production efficiency of oil and gas fields, and is easy to operate with low operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0032] Figure 2It 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 is further described in 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 present invention 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 axially opened 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. 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. The connecting hole connects 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 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 cable 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 radially provided on the shear ring 2, and 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 matched 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, and 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 matches with the shoulder at one end of the main channel to limit and prevent the sliding sleeve 5 from moving downward.

[0038] A plurality of 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, so that a sealed cavity is formed 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 arranged on the upper part of the sliding sleeve 5 and two are arranged 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 connected to the support seat 8 by threads. The body 1 is provided with body through grooves on both sides for assembling the cable pipeline. One end of the connecting screw 9 passes through the body through groove and is fixed to the body 1 to prevent the cable pipeline from moving underground. The shear disc 6 is assembled between the sliding sleeve 5 and the support seat 8; when the shear disc 6 is cut, the main channel of the oil pipe can be opened and the electric pump side can be closed. The support seat 8 is stuck at the step of the body 1 as the sliding sleeve 5 moves downward, so that the sliding sleeve 5 is limited at the lower end of the body 1.

[0041] The assembly process of the injection-production bidirectional isolation conversion Y-type device of the present invention is as follows:

[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 with the other end of the sliding sleeve 5, and press the shear disk 6 by the connecting 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 two-way 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 method for using the injection-production bidirectional isolation conversion Y-type device of the present invention:

[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 underground; 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 through 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 off by pressure, the sliding sleeve 5 moves downward, the main body 1 is limited, and the pressure is continued to increase until the shear disk 6 breaks, the main channel is opened, and the side channel is sealed; if the sliding sleeve 5 does not reach the position after the shear disk breaks, the soluble ball can be continuously thrown into the upper end of the sliding sleeve, and the pressure is 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 wirework.

[0046] The Y-type injection-production bidirectional isolation conversion device provided by the present invention has a reasonable structural design, stable and reliable performance, and can be used in the same well to implement early drainage and later water injection, 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 as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, 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 the illustrations shown and described herein.

Claims

1. A Y-type injection-production bidirectional isolation conversion device, characterized in that: include: ontology; A main channel, which is opened along the axial direction of 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, which is coaxially disposed in the main channel and can move up and down along the main channel; A shear ring, which is arranged in the main channel and fixedly arranged at one end of the sliding sleeve; A support seat, which is arranged in the main channel and fixedly arranged at the other end of the sliding sleeve; The shear plate is arranged between the sliding sleeve and the supporting 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 arranged at the lower part 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, which are respectively radially opened on the outer wall of the sliding sleeve; At least two shear screws have one end that passes through the screw hole and is 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 part of the sliding sleeve and the lower part of the supporting 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 supporting 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 one 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: A body through groove, which is opened along two sides of the body; A connecting screw has one end that passes through the through slot of the main body and is fixed on the main 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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