Sleeve of cannula shaper

Abstract

According to the sleeve of the casing pipe shaper, more than two rows of pin roller mounting through grooves which are spirally distributed are axially machined in a sleeve body, a certain distance is reserved between every two adjacent pin roller mounting through grooves in each row of pin roller mounting through grooves, and the pin roller mounting through grooves are inclined grooves; an opening I, located in the inner surface of the sleeve, of the roller installation through groove is hexagonal, an opening II, located in the outer surface of the sleeve, of the roller installation through groove is quadrilateral, the cross section of the roller installation through groove is in a parallel hexagon shape or is the same as the axial section cutting plane of the spindle body, and the groove bottom face right opposite to the opening II of the roller installation through groove is an inclined face. And the inclination direction is the same as that of the roller mounting through groove. The pin roller mounting through groove is an inclined chute, and the shape of the cross section of the pin roller mounting through groove is the same as that of the axial section cutting plane of the spindle body, so that the accident that the pin roller of the spindle body falls off accidentally during shaping is completely avoided. And the device has the advantages of simple structure and convenience in installation.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and gas pipeline repair, and specifically relates to a component of a casing shaper. Background Art

[0002] With the deepening of domestic oil and gas resource exploration and development, more and more casings are damaged and deformed under complex geostress. Due to the influence of geological, engineering, corrosion and other factors, the casing of oil and gas wells has undergone varying degrees of deformation. With the increasing number of complex wells such as deep wells, ultra-deep wells, and large-displacement wells, the number of casing damage has also increased, seriously affecting the safe, efficient and sustainable development of oil and gas. However, many casing-damaged wells can resume production after repairing the casing diameter after well repair operations, reducing losses to a minimum. Therefore, there is an urgent need for the development of efficient and safe casing shaping tools on site.

[0003] Mechanical shaping and explosive shaping are commonly used for casing repair. Due to the uneven thickness distribution of the casing in the deformation area, it is very difficult to control the amount of explosives used during explosive shaping, and it is difficult to avoid secondary damage to the casing. In contrast, mechanical shaping is currently the most widely used technical method for casing shaping, and the ball-type shaper is the most widely used. However, the rolling groove of the ball in the ball-type shaper is grooved on the outer surface of the shaper body, and the ball is also placed into the groove from the outer surface. Then, the ball placement hole is roughly processed by "hammering, chiseling, axe and adze" to make the ball embedded in the rolling groove. However, the ball of this structure is easy to fall off during the shaping process, affecting the repair effect. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a sleeve of a sleeve shaper which is easy to install and can prevent rollers in the sleeve shaper from falling off during the shaping process.

[0005] The technical solution adopted to solve the above technical problems is: a sleeve of a sleeve shaper, wherein more than two rows of spirally distributed roller mounting grooves are axially processed on the sleeve body, and a certain distance is spaced between two adjacent roller mounting grooves in each row of roller mounting grooves. The roller mounting grooves are oblique grooves, and the opening I of the roller mounting groove located on the inner surface of the sleeve is hexagonal, and the opening II located on the outer surface of the sleeve is a quadrilateral. The cross-sectional shape of the roller mounting groove is a parallelepiped or the same as the axial cross-sectional surface of the spindle, and the bottom surface of the groove facing the opening II of the roller mounting groove is an inclined surface, and the inclination direction is the same as the inclination direction of the roller mounting groove.

[0006] As a preferred technical solution, the helix angle of each row of roller mounting grooves is 5° to 10°.

[0007] As a preferred technical solution, the angle between the center line of the roller mounting groove and the axis of the sleeve is 10° to 30°.

[0008] As a preferred technical solution, the geometric shape of the lower end of the sleeve body is hemispherical.

[0009] As a preferred technical solution, the roller mounting groove is inclined upward, and the opening II is located above the opening I.

[0010] The beneficial effects of the utility model are as follows:

[0011] The utility model has more than two rows of spirally distributed roller installation grooves axially processed on the sleeve body, so as to ensure that the roller installation grooves on the same radial surface of the sleeve are evenly distributed and improve the shaping effect.

[0012] The roller installation slot of the utility model is an inclined slot and the cross-sectional shape of the roller installation slot is the same as the axial cross-sectional shape of the spindle, which completely avoids the accident of the spindle roller falling during shaping. It also has the advantages of simple structure and convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 yes Figure 1 DD cross-sectional view.

[0015] Figure 3 yes Figure 1 EE cross-sectional view.

[0016] Figure 4 It is a schematic diagram of the geometric shape of the roller mounting slot.

[0017] Figure 5 yes Figure 4 Yes, FF cutaway.

[0018] Figure 6 It is a schematic diagram of the movement of the roller in the roller mounting groove.

[0019] Among them: sleeve 1, roller installation groove 2, center tube 3, roller 4. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the following embodiments. Example 1

[0021] exist Figures 1 to 5In the sleeve of the sleeve shaper of the present embodiment, the inner diameter of the sleeve 1 body is 68.62 mm and the outer diameter is 104.62 mm. The lower end of the sleeve 1 body is hemispherical in shape, which is used to reduce the resistance encountered by the sleeve shaper during operation. The sleeve 1 body is axially processed with 10 rows of roller mounting grooves, each row of 6 roller mounting grooves evenly distributed in a spiral pattern. The helix angle of each row of roller mounting grooves 2 is 6°, and the roller mounting grooves 2 are upwardly inclined inclined grooves. The angle between the center line of the roller mounting groove 2 and the axis of the sleeve 1 is 15°. The opening I of the roller mounting groove 2 located on the inner surface of the sleeve 1 is hexagonal and located at the sleeve. The opening II on the outer surface of the tube 1 is a quadrilateral, and the opening II is located above the opening I. The lower edge of the opening II is located between the upper edge and the lower edge of the opening I and close to the upper edge of the opening I. The roller in the sleeve shaper is installed into the roller installation groove 2 through the opening II. The opening I is the roller working port. The cross-sectional shape of the roller installation groove 2 is a parallelepiped or the same as the axial cross-sectional shape of the spindle. The groove bottom surface A of the roller installation groove 2 facing the opening II is an inclined surface, and the inclination direction is the same as the inclination direction of the roller installation groove 2. The distance L1 between the upper end of the groove bottom surface A and the opening II is less than the distance L2 between the lower end of the groove bottom surface A and the opening II.

[0022] When assembling the sleeve shaper, put the roller 4 into the roller installation groove 2 from the opening Ⅰ, and install the center tube of the sleeve shaper in the sleeve to prevent the roller 4 from sliding out of the roller installation groove 2. When the sleeve shaper is not in working state, the roller 4 is located at the lower end position B of the groove bottom surface A in the roller installation groove 2. When the sleeve shaper is in working state, the roller 4 moves from the position B to the position C along the groove bottom surface A. The roller 4 partially protrudes out of the opening Ⅱ, which is used to shape the sleeve. Figure 6 . Example 2

[0023] In this embodiment, two rows of roller mounting grooves 2 are axially processed on the sleeve 1 body in a spiral distribution, the helix angle of each row of roller mounting grooves 2 is 10°, the angle between the center line of the roller mounting groove 2 and the axis of the sleeve 1 is 10°, and the cross-sectional shape of the roller mounting groove 2 is a parallel hexagon. Other components and the connection relationship of the components are the same as those in Example 1. Example 3

[0024] In this embodiment, two rows of roller mounting grooves 2 are axially processed on the sleeve 1 body in a spiral distribution, the helix angle of each row of roller mounting grooves 2 is 10°, and the angle between the center line of the roller mounting groove 2 and the axis of the sleeve 1 is 30°. Other components and the connection relationship of the components are the same as those in Embodiment 1.

Claims

1. A sleeve of a casing shaper, characterized in that: There are more than two rows of spirally distributed roller mounting grooves axially processed on the sleeve body, and a certain distance is spaced between two adjacent roller mounting grooves in each row of roller mounting grooves. The roller mounting grooves are oblique grooves, and the opening I of the roller mounting groove located on the inner surface of the sleeve is hexagonal, and the opening II located on the outer surface of the sleeve is quadrilateral. The cross-sectional shape of the roller mounting groove is a parallelepiped or the same as the axial cross-sectional surface of the spindle, and the groove bottom surface facing the opening II of the roller mounting groove is an inclined surface, and the inclination direction is the same as the inclination direction of the roller mounting groove.

2. The sleeve of the casing shaper according to claim 1, characterized in that: The helix angle of each row of roller mounting grooves is 5° to 10°.

3. The sleeve of the casing shaper according to claim 1, characterized in that: The angle between the center line of the roller installation groove and the axis of the sleeve is 10° to 30°.

4. The sleeve of the casing shaper according to claim 1, characterized in that: The geometric shape of the lower end of the sleeve body is hemispherical.

5. The sleeve of the casing shaper according to claim 1, characterized in that: The roller mounting groove is inclined upward, and the opening II is located above the opening I.

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