CN221096461U

CN221096461U - Uninterrupted circulating valve and drilling equipment

Info

Publication number: CN221096461U
Application number: CN202322682161.0U
Authority: CN
Inventors: 刘恒言
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2024-06-07
Anticipated expiration: 2033-10-08

Abstract

The utility model discloses an uninterrupted circulating valve and drilling equipment for continuous circulation drilling, wherein a valve core comprises a first guide passing part, a sealing part and a second guide passing part; the first guide passing part and the second guide passing part are arranged at two sides of the sealing part; the seal portion includes a first seal assembly and a second seal assembly, and the seal portion is at least partially circular in cross-section. Through adopting first seal assembly and second seal assembly, can realize the better sealed effect between case and the valve body, the disk seat.

Description

Uninterrupted circulating valve and drilling equipment

Technical Field

The utility model belongs to the field of petroleum exploration and development tools, and particularly relates to an uninterrupted circulating valve and drilling equipment used in continuous circulation drilling.

Background

The uninterrupted circulation valve is a novel petroleum drilling tool, and can realize uninterrupted circulation of underground drilling fluid in the whole drilling process, so that the constant bottom hole pressure in the drilling rod connecting and discharging operation process is maintained, the bottom hole drilling fluid is enabled to work in the range of the maximum formation hole pressure and the minimum formation crushing pressure, and the difficult problem of narrow gap pressure and the narrow cracking pressure window in engineering can be solved.

The existing uninterrupted circulating valve is a spherical valve core or a movable valve core, and along with the use of equipment, the tightness can be reduced due to the abrasion of the valve core, so that the use effect of the equipment is affected.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art

Disclosure of Invention

In order to solve the problems in the prior art, the utility model aims to provide an uninterrupted circulating valve and drilling equipment, which have better sealing effect by designing the structure of a valve core.

The utility model discloses an uninterrupted circulation valve, comprising: the valve core comprises a first guide passing part, a sealing part and a second guide passing part; the first guide passing part and the second guide passing part are arranged at two sides of the sealing part; the seal portion includes a first seal assembly and a second seal assembly, and the seal portion is at least partially circular in cross-section.

In some implementations, the first seal assembly includes a first seal ring and a second seal ring, and the valve spool is provided with a first ring groove and a second ring groove corresponding to the first seal ring and the second seal ring.

In some embodiments, the second seal assembly comprises a first sealing conical surface and a second sealing conical surface, and a first conical surface matched with the first sealing conical surface is arranged on the valve seat; and the limiting piece is provided with a second conical surface corresponding to the second sealing conical surface.

In some embodiments, the seal is partially circular in cross-section.

In some embodiments, the first guiding passage part is a plurality of first guiding rods distributed circumferentially, and a liquid channel is formed between any two first guiding rods.

In some embodiments, the second guiding passing portion is a plurality of second guiding rods distributed circumferentially, and a liquid channel is formed between any two second guiding rods.

In some embodiments, the second guide bar is provided with a protrusion.

In some embodiments, the stop is removably sealingly engaged with the valve body.

In some embodiments, the valve body is provided with a liquid inlet, a liquid outlet and a side liquid inlet, and the side liquid inlet is communicated with the valve seat.

A drilling apparatus employing the above uninterrupted circulation valve.

The utility model has the advantages that: through adopting first seal assembly and second seal assembly, can realize the better sealed effect between case and the valve body, the disk seat.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings used in the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is a schematic view of the valve body and retainer cooperating in an embodiment of the present utility model;

FIG. 3 is a cross-sectional view taken along B-B in FIG. 2;

FIG. 4 is a schematic perspective view of a valve core according to an embodiment of the present utility model;

FIG. 5 is a schematic partial cross-sectional view of a valve cartridge according to one embodiment of the present utility model;

fig. 6 is a schematic cross-sectional view of a stopper according to an embodiment of the present utility model.

In the figure: 1. a valve body; 11. a liquid inlet; 12. a liquid outlet; 13. a side inlet; 2. a valve core; 21. a first guide passage portion; 211. a first guide bar; 22. a sealing part; 221. a first ring groove; 222. a second ring groove; 223. a first sealing conical surface; 224. a second sealing conical surface; 225. a first seal ring; 226. a second seal ring; 23. a second guide passage portion; 231. a second guide bar; 2311. a protrusion; 3. a valve seat; 31. a first conical surface; 4. a limiting piece; 41. a second conical surface; 42. a third seal groove; 43. and a third seal ring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

Referring to fig. 1-6, the uninterrupted circulation valve comprises a valve body 1, a valve core 2, a valve seat 3 and a limiting piece 4. The valve body 1 is provided with a liquid inlet 11, a liquid outlet 12 and a side liquid inlet 13, the side liquid inlet 13 is communicated with the valve seat 3, and an accommodating space is arranged in the valve body 1 and is used for accommodating the valve core 2, the valve seat 3 and the limiting piece 4. The valve core 2 can reciprocate in the space defined by the valve seat 3 and the limiting piece 4 under the action of liquid, so that the conduction between the liquid inlet 11 and the liquid outlet 12 or between the liquid inlet 13 and the liquid outlet 12 is completed.

The valve core 2 comprises a first guide passing part 21, a sealing part 22 and a second guide passing part 23; the seal 22 includes a first seal assembly and a second seal assembly.

The first sealing assembly comprises a first sealing ring 225 and a second sealing ring 226, and the valve core 2 is provided with a first annular groove 221 and a second annular groove 222. The first seal ring 225 is installed in the first ring groove 221, and the second seal ring 226 is installed in the second ring groove 222.

The second sealing assembly comprises a first sealing conical surface 223 and a second sealing conical surface 224, and the valve seat 3 is provided with a first conical surface 31 matched with the first sealing conical surface 223; the limiting member 4 is provided with a second conical surface 41 corresponding to the second sealing conical surface 224.

When the liquid inlet 11 and the liquid outlet 12 are in a conducting state, the valve core 2 is in sealing fit with the valve seat 3 through the first sealing ring 225 and the first sealing conical surface 223, the sealing effect is better, and the faster the flow velocity of fluid in the valve is, the better the sealing effect is.

When the side liquid inlet 13 and the liquid outlet 12 are in a conducting state, the valve core 2 is in sealing fit with the limiting piece 4 through the second sealing ring 226 and the second sealing conical surface 224.

In order to obtain a better sealing effect, the cross section of the sealing portion 22 near the liquid inlet 11 is a circular ring, so that the liquid can enter the valve core 2, and the pressure between the liquid and the valve core 2 is increased.

It should be appreciated that in the implementation process, the valve element 2 with different sizes and the first sealing conical surface 223 and the second sealing conical surface 224 with different tapers can be designed to achieve different sealing effects.

The first guiding passage portion 21 is a plurality of first guiding bars 211 distributed circumferentially, and a liquid channel is formed between any two of the first guiding bars 211. The second guiding passage portion 23 is a plurality of second guiding rods 231 distributed circumferentially, and a liquid channel is formed between any two of the second guiding rods 231. In this embodiment, the number of the first guide bars 211 and the second guide bars 231 is four, and the four first guide bars 211 and the four second guide bars 231 are uniformly distributed. The second guide bar 231 is provided with a protrusion 2311.

The limiting piece 4 is detachably matched with the valve body 1 in a sealing way. In this embodiment, a third sealing groove 42 is provided on the limiting member 4, a third sealing ring 43 is provided in the third sealing groove 42, and the limiting member 4 is connected with the valve body 1 through threads. The cross section of the limiting piece 4 is a circular ring.

A drilling apparatus employing the above uninterrupted circulation valve.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an uninterrupted circulation valve, valve body, case, disk seat, locating part, its characterized in that: the valve core comprises a first guide passing part, a sealing part and a second guide passing part; the first guide passing part and the second guide passing part are arranged at two sides of the sealing part; the seal portion includes a first seal assembly and a second seal assembly, and the seal portion is at least partially circular in cross-section.

2. The uninterrupted looping valve according to claim 1, characterized in that: the first sealing assembly comprises a first sealing ring and a second sealing ring, and the valve core is provided with a first annular groove and a second annular groove which correspond to the first sealing ring and the second sealing ring.

3. The uninterrupted looping valve according to claim 1, characterized in that: the second sealing assembly comprises a first sealing conical surface and a second sealing conical surface, and a first conical surface matched with the first sealing conical surface is arranged on the valve seat; and the limiting piece is provided with a second conical surface corresponding to the second sealing conical surface.

4. The uninterrupted looping valve according to claim 1, characterized in that: the sealing part is a circular ring in partial section.

5. The uninterrupted looping valve according to claim 1, characterized in that: the first guide passing part is a plurality of first guide rods distributed in the circumferential direction, and a liquid channel is formed between any two first guide rods.

6. The uninterrupted looping valve according to claim 1, characterized in that: the second guide passing part is a plurality of second guide rods distributed in the circumferential direction, and a liquid channel is formed between any two second guide rods.

7. The uninterrupted looping valve according to claim 6, wherein: and a protrusion is arranged on the second guide rod.

8. The uninterrupted looping valve according to claim 1, characterized in that: and the limiting piece is detachably matched with the valve body in a sealing way.

9. The uninterrupted looping valve according to claim 1, characterized in that: the valve body is provided with a liquid inlet, a liquid outlet and a liquid inlet, and the liquid inlet is communicated with the valve seat.

10. A drilling apparatus, characterized by: use of an uninterrupted circulation valve according to any one of claims 1-9.