Integrated bypass valve sliding sleeve and bypass valve

Abstract

The utility model provides an integrated bypass valve sliding sleeve and a bypass valve, and relates to the field of petroleum drilling. Comprising a body rod, a spring rod, a spring and a limiting device, the diameter of the body rod is larger than that of the spring rod, and one end of the body rod is integrally connected with one end of the spring rod; two limiting grooves are formed in the end, away from the main body rod, of the spring rod in the axial direction of the spring rod, and the two limiting grooves are oppositely formed. One end of the limiting device is slidably connected into the limiting groove, and the spring is arranged outside the spring rod in a sleeving mode and abuts against the position between the limiting device and the body rod. An annular groove is formed in the side wall of the body rod, the spring is sleeved with a sliding sleeve, and one end of the sliding sleeve penetrates through the annular groove in a sliding mode. According to the invention, the strength is high, and the safety and reliability of field use can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of oil drilling, in particular to an integrated bypass valve sliding sleeve and a bypass valve. Background Art

[0002] Multiple-open / close plugging and recirculating tools are widely used in the oil drilling industry. In the event of a lost circulation incident, they can repeatedly apply high-concentration, large-particle plugging materials, as well as perform well flushing or casing cleaning without starting the drill, effectively reducing on-site well control risks. During the use of multiple-open / close plugging and recirculating tools, the sleeve seal and the frequent openings and closings can easily cause wear on the sleeve, leading to tool failure.

[0003] In order to reduce production costs, most existing bypass valve sleeves adopt a split design. The main rod and spring rod of the sleeve are manufactured separately and then connected by threads. However, since the sleeve slides continuously underground, the split design sleeve is prone to falling off and separation. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated bypass valve sleeve and a bypass valve, which have high strength and can ensure safety and reliability in on-site use.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An integrated bypass valve sleeve comprises a main body rod, a spring rod, a spring and a limit device, wherein the diameter of the main body rod is larger than the diameter of the spring rod, and one end of the main body rod is integrally connected to one end of the spring rod;

[0007] The spring rod has one end away from the main rod and has two limiting grooves along its axial direction, and the two limiting grooves are arranged opposite to each other; one end of the limiting device is slidably connected to the limiting groove, and the spring is sleeved on the outside of the spring rod and abuts between the limiting device and the main rod;

[0008] An annular groove is provided in the side wall of the main body rod, and a sliding sleeve is provided on the spring outer sleeve. One end of the sliding sleeve is slidably inserted into the annular groove.

[0009] Furthermore, in the present invention, one end of the sliding sleeve away from the limiting device is limited in the annular groove.

[0010] Furthermore, in the present invention, the inner wall of one end of the sliding sleeve close to the limiting device is fixedly connected to the spring.

[0011] Furthermore, in the present utility model, the limiting device includes a connecting rod and a sliding rod, one end of the connecting rod is connected to one end of the sliding rod, the diameter of the connecting rod is larger than the diameter of the sliding rod, and one end of the sliding rod is slidably connected to the limiting groove, wherein the diameter of the sliding rod is 10 mm.

[0012] Furthermore, in the present invention, a slider is provided in the limiting groove, and a groove adapted to the sliding rod is provided on the side of the slider facing the sliding rod, and one end of the sliding rod is inserted into the groove.

[0013] Furthermore, in the present invention, the main rod and the spring rod are made of a corrosion-resistant alloy material, and the sliding sleeve is made of a high-strength alloy steel material.

[0014] A bypass valve includes the sliding sleeve as described above, and also includes a bypass short section, a ball basket short section and a ball basket. The bypass short section is sleeved on the outside of the sliding sleeve, one end of the bypass short section is threadedly connected to one end of the ball basket short section, and the ball basket is inserted into the interior of the ball basket short section.

[0015] The utility model has at least the following advantages or beneficial effects:

[0016] The utility model can greatly reduce the downhole risk and improve the safety performance of the tool by designing the main rod and the spring rod as an integrally formed connection structure instead of the threaded connection in the prior art; by arranging two opposite limit grooves and a limit device on the spring rod, the strength of the limit device is greatly enhanced and the risk of breakage is reduced; by providing an annular groove on the side wall of the main rod and arranging a sliding sleeve on the outside of the spring, the sliding sleeve can slide in the annular groove, thereby ensuring that the strength of the spring rod can be enhanced without affecting the expansion and contraction of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the explosion structure of the bypass valve provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of a partial structure of a spring rod provided in an embodiment of the present application;

[0020] Figure 3 A cross-sectional view of a sliding sleeve provided in an embodiment of the present application.

[0021] Icons: 1-sliding sleeve, 11-main rod, 111-annular groove, 12-spring rod, 121-limiting groove, 13-spring, 14-limiting device, 141-connecting rod, 142-sliding rod, 143-sliding block, 15-sliding sleeve, 2-bypass short section, 3-basket short section. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0024] Example

[0025] Please refer to Figure 1-Figure 3 , which is a schematic structural diagram of the integrated bypass valve sleeve in an embodiment of the present utility model;

[0026] This embodiment provides an integrated bypass valve sleeve, comprising a main rod 11, a spring rod 12, a spring 13, and a limit device 14. The diameter of the main rod 11 is larger than the diameter of the spring rod 12, and one end of the main rod 11 is integrally connected to one end of the spring rod 12.

[0027] Two limiting grooves 121 are formed along the axial direction of the end of the spring rod 12 away from the main rod 11. The two limiting grooves 121 are arranged opposite to each other. One end of the limiting device 14 is slidably connected to the limiting groove 121. The spring 13 is sleeved on the outside of the spring rod 12 and abuts between the limiting device 14 and the main rod 11.

[0028] An annular groove 111 is formed in the side wall of the main rod 11 , and a sliding sleeve 15 is provided on the outer sleeve of the spring 13 . One end of the sliding sleeve 15 is slidably inserted into the annular groove 111 .

[0029] Next, the integrated bypass valve sleeve 1 of this exemplary embodiment will be further described.

[0030] In some embodiments of the present application, the diameter of the main rod 11 is larger than the diameter of the spring rod 12. The main rod 11 is used to limit the position of the delivered split valve ball, and the spring rod 12 is used to sleeve the spring 13. One end of the main rod 11 is integrally connected to one end of the spring rod 12, so that under the impact of the ball, the sliding sleeve 1 slides within the bypass sub 2 to open the bypass hole. By designing the main rod 11 and the spring rod 12 as an integrally formed connection structure, the intermediate threaded connection is reduced, the downhole risk is greatly reduced, and the tool safety performance is improved.

[0031] In some embodiments of the present application, the spring rod 12 has two limiting grooves 121 defined along its axial direction at one end away from the main rod 11. The two limiting grooves 121 are disposed opposite each other, and two limiting devices 14 are slidably disposed within the two limiting grooves 121, respectively. One end of the limiting device 14 is slidably connected within the limiting groove 121, and the other end is fixed to the bypass nipple 2. The spring 13 is sleeved on the outside of the spring rod 12 and abuts between the limiting device 14 and the main rod 11. When the valve opening ball impacts the sliding sleeve 1, driving it to move, the spring 13 is compressed. Under the restraint of the limiting device 14, the spring 13 is not easily dislodged. Moreover, when the bypass hole is closed, the sliding sleeve 1 can return to its original position under the action of elastic recovery.

[0032] In some embodiments of the present application, an annular groove 111 is defined within the sidewall of the main rod 11, and a sliding sleeve 15 is disposed over the spring 13, with one end of the sliding sleeve 15 slidingly inserted into the annular groove 111. Because the spring 13 is disposed over the outer wall of the spring rod 12, its thickness is smaller than that of the main rod 11, resulting in lower strength. By disposing the sliding sleeve 15 over the spring 13 and slidably connecting the sliding sleeve 15 to the main rod 11, the strength of the spring rod 12 can be increased without affecting the expansion and contraction of the spring 13 or the movement of the sliding sleeve 1.

[0033] As a preferred embodiment, the end of the sliding sleeve 15 away from the limiting device 14 is limited in the annular groove 111 to prevent the sliding sleeve 15 from separating from the main rod 11 and falling off during the movement of the sliding sleeve 1 and under the expansion and contraction action of the spring 13.

[0034] As a preferred embodiment, the inner wall of one end of the sliding sleeve 15 near the stopper 14 is fixedly connected to the spring 13. By fixedly connecting one end of the sliding sleeve 15 to one end of the spring 13, the sliding sleeve 15 can expand and contract within the annular groove 111 as the spring 13 expands and contracts. That is, when the spring 13 compresses, the sliding sleeve 15 retracts into the annular groove 111. When the spring 13 recovers its deformation and elongates, it also drives the sliding sleeve 15 out of the annular groove 111. This prevents the sliding sleeve 15 from being retained in the annular groove 111 and being unable to be pulled out, thereby failing to enhance the strength of the spring rod 12.

[0035] As a preferred embodiment, the above-mentioned limiting device 14 includes a connecting rod 141 and a sliding rod 142. One end of the connecting rod 141 is connected to one end of the sliding rod 142. The diameter of the connecting rod 141 is larger than the diameter of the sliding rod 142. One end of the sliding rod 142 is slidably connected to the limiting groove 121, wherein the diameter of the sliding rod 142 is 10 mm. The connecting rod 141 is used to be connected and fixed to the bypass short section 2. One end of the sliding rod 142 is slidably connected to the limiting groove 121, wherein the diameter of the sliding rod 142 is 10 mm. Increasing the diameter of the sliding rod 142 portion of the limiting device 14 from the original 6.35 mm to 10 mm can greatly enhance the strength of the limiting device 14 and reduce the risk of breakage.

[0036] As a preferred embodiment, a slider 143 is provided within the limiting groove 121. A groove adapted to fit the sliding rod 142 is defined on the side of the slider 143 facing the sliding rod 142, with one end of the sliding rod 142 inserted into the groove. By adding the slider 143 within the limiting groove 121 and inserting the sliding rod 142 into the groove of the slider 143, the slider 143 and the sliding rod 142 form an integrated sliding structure, further increasing the strength of the sliding rod 142 during movement of the sliding sleeve 1.

[0037] As a preferred embodiment, the main rod 11 and spring rod 12 are made of a erosion-resistant alloy, and the sliding sleeve 15 is made of a high-strength alloy steel. The main rod 11 has a larger diameter and primarily withstands liquid erosion from the front, so the erosion-resistant alloy is used for the main rod 11. The spring rod 12 is integrally connected to the main rod 11, and its inner wall is also subject to liquid erosion. Therefore, it is made of the same material, which can improve production efficiency and enhance erosion resistance.

[0038] The present application also provides a bypass valve, referring to Figure 1 , including the sliding sleeve 1 as mentioned above, and also including a bypass short section 2, a ball basket short section 3 and a ball basket. The bypass short section 2 is sleeved on the outside of the sliding sleeve 1, one end of the bypass short section 22 is threadedly connected to one end of the ball basket short section 3, and the ball basket is inserted into the inside of the ball basket short section 3.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An integrated bypass valve sleeve, characterized in that: It includes a main rod, a spring rod, a spring and a limit device, wherein the diameter of the main rod is larger than the diameter of the spring rod, and one end of the main rod is integrally connected to one end of the spring rod; The spring rod has one end away from the main rod and has two limiting grooves along its axial direction, and the two limiting grooves are arranged opposite to each other; one end of the limiting device is slidably connected to the limiting groove, and the spring is sleeved on the outside of the spring rod and abuts between the limiting device and the main rod; An annular groove is provided in the side wall of the main body rod, and a sliding sleeve is provided on the spring outer sleeve. One end of the sliding sleeve is slidably inserted into the annular groove.

2. The integrated bypass valve sleeve according to claim 1, characterized in that: One end of the sliding sleeve away from the limiting device is limited in the annular groove.

3. The integrated bypass valve sleeve according to claim 2, characterized in that: The inner wall of one end of the sliding sleeve close to the limiting device is fixedly connected to the spring.

4. The integrated bypass valve sleeve according to claim 1, characterized in that: The limiting device includes a connecting rod and a sliding rod, one end of the connecting rod is connected to one end of the sliding rod, the diameter of the connecting rod is larger than the diameter of the sliding rod, and one end of the sliding rod is slidably connected to the limiting groove, wherein the diameter of the sliding rod is 10 mm.

5. The integrated bypass valve sleeve according to claim 4, characterized in that: A sliding block is provided in the limiting groove, and a groove adapted to the sliding rod is provided on a side of the sliding block facing the sliding rod, and one end of the sliding rod is inserted into the groove.

6. The integrated bypass valve sleeve according to claim 1 or 5, characterized in that: The main rod and the spring rod are made of erosion-resistant alloy material, and the sliding sleeve is made of high-strength alloy steel material.

7. A bypass valve, characterized in that: It comprises the sliding sleeve as described in any one of claims 1-6, and also comprises a bypass short section and a ball basket short section, wherein the bypass short section is sleeved on the outside of the sliding sleeve, and one end of the bypass short section is threadedly connected to one end of the ball basket short section.

Images