Bridge plug pushing cylinder and bridge plug setting device

Abstract

The utility model provides a bridge plug pushing cylinder and a bridge plug setting device, and relates to the technical field of bridge plug setting, the bridge plug pushing cylinder comprises a pushing cylinder body, the pushing cylinder body is cylindrical, one end of the pushing cylinder body and the other end of the pushing cylinder body are respectively used for being connected with a bridge plug and a bridge plug setting tool, the periphery of one end of the pushing cylinder body is provided with a protection step protruding outwards, and the protection step is provided with a protection groove. The outer diameter of the protection step is smaller than that of the bridge plug; the problems that in the prior art, due to the fact that the outer diameter of a bridge plug pushing cylinder is consistent with that of a bridge plug, when the bridge plug pushing cylinder is jammed, jamming is difficult to release in the mode of increasing cable tension are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge plug setting, and more specifically relates to a bridge plug push cylinder and a bridge plug setting device. Background Art

[0002] The cable-conveyed pumping bridge plug and perforation joint operation technology has the advantages of short construction period, high efficiency and accurate depth positioning. It has been widely promoted and applied in the exploration and development of unconventional oil and gas reservoirs such as shale oil and gas, and has achieved good application results. It has become one of the key supporting engineering technologies to support the efficient development of such oil and gas reservoirs.

[0003] With the continued advancement of unconventional oil and gas reservoir exploration and development, coupled with the need for increased speed and efficiency, wellbore trajectories and wellbore environments are becoming increasingly complex. This increases the risk of tool string sticking during pump-and-bridge plug-and-perforate operations. When a downhole perforating tool string becomes stuck, a solution is typically injected downhole to soak a soluble bridge plug, displacing it every two hours. If this persists, the stuck point is likely located at the pusher barrel.

[0004] The outer diameter of the bridge plug pusher connected to the traditional bridge plug setting tool is the same as that of the bridge plug. If the pusher becomes stuck below the perforating tool string during running, the 8mm outer diameter cable's ability to handle complex engineering issues is limited. Unblocking the jam by increasing cable tension is generally difficult, requiring only cable severing and coiled tubing to recover the tool string. This approach carries significant safety risks, increases production costs, and impacts completion times. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies in the prior art and provide a bridge plug push tube and a bridge plug setting device to solve the problem in the prior art that the outer diameter of the bridge plug push tube is consistent with the outer diameter of the bridge plug, and when the bridge plug push tube encounters obstruction, it is difficult to unblock it by increasing the cable tension.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a bridge plug push cylinder, comprising:

[0007] The push cylinder body is cylindrical, one end of the push cylinder body and the other end of the push cylinder body are respectively used to connect the bridge plug and the bridge plug sealing tool, and the outer periphery of one end of the push cylinder body is provided with an outwardly protruding protective step, and the outer diameter of the protective step is smaller than the outer diameter of the bridge plug.

[0008] Optionally, the other end of the push cylinder body is provided with a diameter-changing step which gradually contracts from one end of the push cylinder body toward the other end of the push cylinder body.

[0009] Optionally, an internal thread is provided on the inner circumference of the other end of the push cylinder body.

[0010] Optionally, a top screw hole is provided on the side wall of the other end of the push cylinder body.

[0011] Optionally, a flow passage is provided at one end of the side wall of the push cylinder body close to the protective step, and the flow passage is a long waist hole extending along the axial direction of the push cylinder body.

[0012] Optionally, the outer diameter of the protective step is 0.5-1.5 mm smaller than the outer diameter of the bridge plug.

[0013] Optionally, the outer diameter of the push cylinder body is 2-6 mm smaller than the outer diameter of the bridge plug.

[0014] Optionally, the width of the protective step along the axial direction of the push cylinder body is 5-10 mm.

[0015] The utility model also provides a bridge plug setting device, comprising the above-mentioned bridge plug push cylinder.

[0016] Optionally, the bridge plug setting device further includes a bridge plug and a bridge plug setting tool, and the bridge plug and the bridge plug setting tool are respectively connected to two ends of the push cylinder body.

[0017] The utility model provides a bridge plug push cylinder and a bridge plug sealing device, which has the beneficial effects that: the bridge plug push cylinder has a cylindrical push cylinder body, and an outwardly protruding protective step is provided on the outer periphery of one end of the push cylinder body connected to the bridge plug, so that the bridge plug is protected by the protective step. At the same time, the outer diameter of the protective step is slightly smaller than the outer diameter of the bridge plug, which can effectively reduce the risk of the bridge plug push cylinder encountering obstruction. Even if the bridge plug push cylinder encounters obstruction, it is easier to unblock because the width of the protective step is very small compared to the length of the entire push cylinder body, thereby improving the unblocking efficiency and the success rate of unblocking.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0020] Figure 1 A structural schematic diagram of a bridge plug push cylinder according to embodiment 1 of the present utility model is shown.

[0021] Figure 2 A structural schematic diagram of a bridge plug setting device according to the second embodiment of the present utility model is shown.

[0022] Description of reference numerals:

[0023] 1. Bridge plug setting tool; 2. Bridge plug push tube; 21. Protective step; 22. Push tube body; 23. Internal thread; 24. Top screw hole; 25. Variable diameter step; 26. Flow channel; 3. Bridge plug. DETAILED DESCRIPTION

[0024] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0025] The utility model provides a bridge plug push cylinder, comprising:

[0026] The push cylinder body is cylindrical, and one end of the push cylinder body and the other end of the push cylinder body are respectively used to connect the bridge plug and the bridge plug sealing tool. The outer periphery of one end of the push cylinder body is provided with an outwardly protruding protective step, and the outer diameter of the protective step is smaller than the outer diameter of the bridge plug.

[0027] Specifically, in order to solve the problem in the prior art that the outer diameter of the bridge plug push cylinder is consistent with the outer diameter of the bridge plug, and it is difficult to unblock the bridge plug push cylinder by increasing the cable tension when the bridge plug push cylinder encounters obstruction; the bridge plug push cylinder provided by the utility model has a cylindrical push cylinder body, and an outwardly protruding protective step is provided on the outer periphery of one end of the push cylinder body connected to the bridge plug, so that the bridge plug is protected by the protective step. At the same time, the outer diameter of the protective step is slightly smaller than the outer diameter of the bridge plug, which can effectively reduce the risk of the bridge plug push cylinder encountering obstruction. Even if the bridge plug push cylinder encounters obstruction, it is easier to unblock because the width of the protective step is very small compared to the length of the entire push cylinder body, thereby improving the unblocking efficiency and the success rate of unblocking.

[0028] Furthermore, the entire set of pumping bridge plug perforating tool strings has a maximum outer diameter at the bridge plug and the bridge plug push tube. The bridge plug can be dissolved, but the push tube cannot be dissolved. In order to reduce the risk of the bridge plug push tube getting stuck during on-site pumping construction, the utility model sets a protective step with an outer diameter slightly smaller than the outer diameter of the bridge plug at the lower end of the bridge plug push tube to support and protect the normal use and sealing of the bridge plug. The outer diameter of most areas of the push tube body is reduced to a reasonable range, that is, the outer diameter of the push tube body must be smaller than the protective step, which can effectively reduce the risk of the bridge plug push tube getting stuck. Even if it gets stuck, the width of the part stuck at the protective step is small, and it can be unstuck by liquid pumping or wellhead drainage, thereby improving the success rate of unstuck. The bridge plug push tube provided by the utility model realizes the protection of the bridge plug during the wellbore process, effectively reduces the risk of the bridge plug push tube getting stuck or stuck, and improves the success rate of unstuck. It is also characterized by high safety and reliability, easy implementation, and low manufacturing cost.

[0029] Optionally, the other end of the push cylinder body is provided with a diameter-changing step which gradually contracts from one end of the push cylinder body toward the other end of the push cylinder body.

[0030] Specifically, when in use, the bridge plug is connected to the lower end of the bridge plug push cylinder, the bridge plug setting tool is connected to the upper end of the bridge plug push cylinder, the lower end of the bridge plug push cylinder is set flush to support the bridge plug, and the variable diameter step at the upper end of the bridge plug push cylinder is set to match the outer diameter of different bridge plug setting tools.

[0031] Furthermore, whether it is the protective step or the diameter-changing step, a chamfer is provided at the diameter-changing position on the push cylinder body, and a transition connection is formed by the chamfer.

[0032] Optionally, an internal thread is provided on the inner circumference of the other end of the push cylinder body.

[0033] Specifically, an internal thread is provided at the upper end of the push cylinder body for connecting to a bridge plug setting tool.

[0034] Optionally, a top screw hole is provided on the side wall of the other end of the push cylinder body.

[0035] Specifically, the setting of the top screw hole is used to screw in the anti-retraction top screw, which is convenient for matching with the internal thread and improves the reliability of the connection between the upper end of the bridge plug push tube and the bridge plug setting tool.

[0036] Optionally, a flow passage is provided at one end of the side wall of the push cylinder body close to the protective step, and the flow passage is a long waist hole extending along the axial direction of the push cylinder body.

[0037] Specifically, two flow passages are provided on the side wall of the push cylinder body near its lower end. The two flow passages are arranged opposite to each other and can accommodate the flow.

[0038] Optionally, the outer diameter of the protection step is 0.5-1.5 mm smaller than the outer diameter of the bridge plug.

[0039] Specifically, the outer diameter of the protective step only needs to be slightly smaller than the outer diameter of the bridge plug, so as to ensure its support and protection for the bridge plug and to ensure that it is less likely to get stuck than the bridge plug itself.

[0040] Optionally, the outer diameter of the push cylinder body is 2-6 mm smaller than the outer diameter of the bridge plug.

[0041] Specifically, the outer diameter of the push cylinder body must be smaller than the outer diameter of the protective step. Therefore, the outer diameter of the push cylinder body is 2-6 mm smaller than the outer diameter of the bridge plug. Compared with the protective step, most positions on the outer side of the push cylinder body are less likely to encounter obstruction.

[0042] Optionally, the width of the protective step along the axial direction of the push cylinder body is 5-10 mm.

[0043] Specifically, the width of the protective step should not be too wide, otherwise it will increase the difficulty of unblocking once it encounters a jam. The width of the protective step should not be too narrow, otherwise it will be difficult to ensure a good protection effect on the bridge plug.

[0044] Furthermore, for example, the outer diameter of the bridge plug is known, denoted as dmm, the outer diameter of the protective step at the lower end of the bridge plug push tube can be set to d-1mm, the width of the protective step is set to 5-10mm, the outer diameter of the push tube body is set to d-(2~6)mm, and chamfers are set at all diameter changes of the push tube body.

[0045] Optionally, the push cylinder device is integrally cut and formed, and its material is preferably a high-pressure-resistant, corrosion-resistant, and high-strength metal material.

[0046] The utility model also provides a bridge plug setting device, comprising the above-mentioned bridge plug push cylinder.

[0047] Specifically, the bridge plug sealing device connects the bridge plug and the bridge plug sealing tool through the above-mentioned bridge plug push cylinder, and can carry out the cable-transported pumping bridge plug perforation joint process. Since an outwardly protruding protective step is provided on the outer periphery of one end of the push cylinder body connected to the bridge plug, and the outer diameter of the protective step is slightly smaller than the outer diameter of the bridge plug push cylinder, the protective step can be used to protect the bridge plug and effectively reduce the risk of the bridge plug push cylinder getting stuck. Even if the bridge plug push cylinder gets stuck, it is easier to unblock because the width of the protective step is very small compared to the length of the entire push cylinder body, thereby improving the unblocking efficiency and the success rate of unblocking.

[0048] Optionally, the bridge plug setting device further includes a bridge plug and a bridge plug setting tool, and the bridge plug and the bridge plug setting tool are respectively connected to both ends of the push cylinder body.

[0049] Specifically, the bridge plug push tube connects the bridge plug and the bridge plug setting tool, and can carry out the cable-conveyed pumping bridge plug perforating joint operation process.

[0050] Example 1

[0051] like Figure 1 As shown, the utility model provides a bridge plug push cylinder, comprising:

[0052] The push cylinder body 22 is cylindrical. One end of the push cylinder body 22 and the other end of the push cylinder body 22 are respectively used to connect the bridge plug 3 and the bridge plug sealing tool 1. The outer periphery of one end of the push cylinder body 22 is provided with an outwardly protruding protective step 21, and the outer diameter of the protective step 21 is smaller than the outer diameter of the bridge plug 3.

[0053] In this embodiment, a diameter-changing step 25 is provided at the other end of the push cylinder body 22 , which gradually contracts from one end of the push cylinder body 22 toward the other end of the push cylinder body 22 .

[0054] In this embodiment, an internal thread 23 is provided on the inner circumference of the other end of the push cylinder body 22 .

[0055] In this embodiment, a top screw hole 24 is provided on the side wall of the other end of the push cylinder body 22 .

[0056] In this embodiment, a flow passage 26 is provided on one end of the side wall of the push cylinder body 22 close to the protective step 21 . The flow passage 26 is a long waist hole extending along the axial direction of the push cylinder body 22 .

[0057] In this embodiment, the outer diameter of the protective step 21 is smaller than the outer diameter of the bridge plug 3 by 0.5-1.5 mm.

[0058] In this embodiment, the outer diameter of the push cylinder body 22 is 2-6 mm smaller than the outer diameter of the bridge plug 3 .

[0059] In this embodiment, the width of the protective step 21 along the axial direction of the push cylinder body 22 is 5-10 mm.

[0060] In this embodiment, the material of the bridge plug push tube 2 is stainless steel.

[0061] Example 2

[0062] like Figure 2 As shown, the utility model also provides a bridge plug setting device, including the above-mentioned bridge plug push cylinder 2.

[0063] In this embodiment, the bridge plug setting device further includes a bridge plug 3 and a bridge plug setting tool 1 . The bridge plug 3 and the bridge plug setting tool 1 are respectively connected to two ends of the push cylinder body 22 .

[0064] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A bridge plug push cylinder, characterized in that: include: The push cylinder body is cylindrical, one end of the push cylinder body and the other end of the push cylinder body are respectively used to connect the bridge plug and the bridge plug sealing tool, and the outer periphery of one end of the push cylinder body is provided with an outwardly protruding protective step, and the outer diameter of the protective step is smaller than the outer diameter of the bridge plug.

2. The bridge plug push tube according to claim 1, characterized in that: The other end of the push cylinder body is provided with a diameter-changing step which gradually contracts from one end of the push cylinder body toward the other end of the push cylinder body.

3. The bridge plug push tube according to claim 1, characterized in that: An internal thread is provided on the inner periphery of the other end of the push cylinder body.

4. The bridge plug push tube according to claim 1, characterized in that: The other end side wall of the push cylinder body is provided with a top screw hole.

5. The bridge plug push cylinder according to claim 1, characterized in that: An overflow channel is provided on one end of the side wall of the push cylinder body close to the protective step. The overflow channel is a long waist hole extending along the axial direction of the push cylinder body.

6. The bridge plug push tube according to claim 1, characterized in that: The outer diameter of the protective step is 0.5-1.5 mm smaller than the outer diameter of the bridge plug.

7. The bridge plug push tube according to claim 1, characterized in that: The outer diameter of the push cylinder body is 2-6 mm smaller than the outer diameter of the bridge plug.

8. The bridge plug push cylinder according to claim 1, characterized in that: The width of the protective step along the axial direction of the push cylinder body is 5-10 mm.

9. A bridge plug setting device, characterized in that: Including the bridge plug push cylinder according to any one of claims 1-8.

10. The bridge plug setting device according to claim 9, characterized in that: The bridge plug setting device further comprises a bridge plug and a bridge plug setting tool, wherein the bridge plug and the bridge plug setting tool are respectively connected to two ends of the push cylinder body.

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