CN209817988U - Flywheel device for horizontal well - Google Patents

Abstract

The utility model discloses a flywheel gear for horizontal well, the device includes: the tail part of the first pipe section is provided with a first cavity with internal threads; the second pipe section is provided with a penetrating cylindrical second cavity, the outer side wall of the second pipe section is relatively provided with a pair of support rods, the support rods are fixedly connected with the inner ring of the bearing, and the outer ring of the bearing is fixedly connected with the wheel sheet; the head of the third pipe section penetrates through the second cavity to enter the first cavity and is in threaded connection with the first pipe section. The beneficial effects of the utility model are that can reduce frictional resistance, make the instrument cluster can get into deeper well section operation.

Description

Flywheel device for horizontal well

Technical Field

The utility model belongs to the petroleum equipment field, concretely relates to flywheel device for horizontal well.

Background

Horizontal wells are special wells having a maximum well deviation angle of up to or near 90 (typically no less than 86) and drilling a length of horizontal well section in the zone of interest. Sometimes the angle of inclination may exceed 90 deg., for certain special needs, "upturned". The flywheel tool can reduce the friction force between the pipe string and the oil pipe or the casing pipe and enter a deeper well section.

The existing roller tool is too long, so that the length of the perforating gun string is limited; the bearing is not sealed, and is easily blocked by impurities under high pressure, so that the roller tool cannot be used; the existing roller or flywheel tool can only move in one direction and cannot rotate transversely, and the resistance reducing effect is poor.

Disclosure of Invention

To the problem that exists among the prior art, the utility model provides a flywheel device for horizontal well, the utility model discloses can reduce frictional resistance, make the instrument cluster can get into darker well section operation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a flywheel apparatus for a horizontal well, the apparatus comprising: the tail part of the first pipe section is provided with a first cavity with internal threads; the second pipe section is provided with a penetrating cylindrical second cavity, the outer side wall of the second pipe section is relatively provided with a pair of support rods, the support rods are fixedly connected with the inner ring of the bearing, and the outer ring of the bearing is fixedly connected with the wheel sheet; the head of the third pipe section penetrates through the second cavity to enter the first cavity and is in threaded connection with the first pipe section.

Preferably, the wheel piece is spherical cap shaped.

Preferably, the virtual spheres where the two wheel sheets are located coincide.

Preferably, the second cavity has an inner diameter slightly larger than an outer diameter of the third tube section through the second cavity portion, the second tube section being rotatable about the third tube section.

Preferably, the bearing is fully enclosed.

Preferably, the head of the first pipe section is a male buckle.

Preferably, the tail part of the third pipe section is a female buckle.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a horizontal well flywheel, can be used to the well logging, the perforation, get operations such as core, can effectual reduction with the area of contact of sleeve pipe or pipe wall, by a wide margin reduction instrument cluster and the frictional force between sleeve pipe or the pipe wall, thereby guarantee that horizontal well instrument can be faster get into from the farther position operation of well head, and need not to apply too much external force, compare with the pipe cluster that does not use the gyro wheel instrument, use the flywheel can reduce 80% frictional resistance, compare with the pipe cluster that uses conventional gyro wheel instrument, use the flywheel can reduce 50% frictional resistance, make the instrument cluster can get into deeper well section operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic cross-sectional view at the wheel plate.

Fig. 3 is a schematic sectional view of the entire structure of the present invention at a-a in fig. 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1 to 3, the present embodiment provides a flywheel apparatus for a horizontal well, the apparatus including: the tail part 11 of the first pipe section 1 is provided with a first cavity with internal threads; the second pipe section 2 is provided with a through cylindrical second cavity, the outer side wall of the second pipe section 2 is relatively provided with a pair of support rods 21, the support rods 21 are fixedly connected with an inner ring 221 of a bearing, and an outer ring 222 of the bearing is fixedly connected with a wheel sheet 3; and a third pipe section 4, wherein the head part 41 of the third pipe section is provided with external threads, and the head part 41 of the third pipe section passes through the second cavity and enters the first cavity to be in threaded connection with the first pipe section 1.

The wheel piece 3 is in the shape of a spherical cap. The portion of the spherical surface that is truncated by the plane is called the spherical cap. The wheel piece 3 is a smaller part of the sphere which is divided into two parts by a plane.

The virtual spheres 5 where the two wheel sheets 3 are located coincide. The wheel piece both can be rotatory around the bracing piece, and the wheel piece can also be rotatory around first pipeline section along with the second pipeline section simultaneously, and the dual rotation dimension makes, the flexibility ratio of this device increase to reduce frictional resistance.

The second cavity has an inner diameter slightly larger than the outer diameter of the third pipe section 4 through the second cavity part, and the second pipe section 2 can rotate around the third pipe section 4.

The bearing is totally enclosed.

The head 12 of the first pipe section is a male buckle and the tail 42 of the third pipe section is a female buckle. Of course, in another embodiment, the head 12 of the first pipe segment is a box and the tail 42 of the third pipe segment is a pin.

The totally enclosed bearing is a bearing with a seal cover. Because both sides are attached with sealing covers, the steel balls on the inner side of the bearing can not be seen. The open mode is vice versa.

Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention can be made without departing from the spirit and scope of the present invention, and these modifications and improvements are within the spirit and scope of the present invention.

Claims (7)

1. A flywheel gear for a horizontal well, the gear comprising:

the pipe comprises a first pipe section (1), wherein a first cavity with internal threads is formed in the tail part (11) of the first pipe section;

the second pipe section (2) is provided with a penetrating cylindrical second cavity, the outer side wall of the second pipe section (2) is oppositely provided with a pair of support rods (21), the support rods (21) are fixedly connected with an inner ring (221) of a bearing, and an outer ring (222) of the bearing is fixedly connected with a wheel sheet (3); and

a third pipe section (4), the head (41) of the third pipe section is provided with external threads, and the head (41) of the third pipe section penetrates through the second cavity to enter the first cavity to be in threaded connection with the first pipe section (1).

2. Flywheel device according to claim 1, characterized in that said wheel plate (3) is spherical cap shaped.

3. Flywheel device according to claim 2, characterized in that the virtual spheres (5) on which the two wheel segments (3) are located coincide.

4. A flywheel arrangement for horizontal wells according to claim 3, characterized in that the inner diameter of the second cavity is slightly larger than the outer diameter of the part of the third pipe section (4) passing through the second cavity, the second pipe section (2) being rotatable around the third pipe section (4).

5. The flywheel device for a horizontal well according to claim 1, wherein said bearing is fully enclosed.

6. Flywheel device for horizontal wells according to claim 1, characterized in that the head (12) of said first pipe section is a male button.

7. The flywheel device for horizontal wells according to claim 6, wherein the tail (42) of said third pipe section is a box.