A new drilling stabilizer

Abstract

The utility model discloses a novel drilling stabilizer, including stabilizer body, along the circumferential direction of stabilizer body, three equidistance's first recess are set up in stabilizer body lateral wall, and the lateral wall of stabilizer body between two adjacent first recess is set up with second recess, and the longitudinal rotation of second recess is provided with cylindrical roller, and the cylindrical roller surface is inlayed with alloy tooth, and the cylindrical roller surface is set up with spiral flow groove, and the interval and inlaying fixed of the spiral flow groove are set up with the tab, and the alloy tooth is distributed in the gap between the upper and lower spiral flow groove, and the both ends of cylindrical roller are respectively fixed with the frustum, and the side of frustum is fixed with the scraper. The utility model discloses the point contact design of multi alloy tooth, effectively reduces the friction resistance of contact part and well wall, and can automatically discharge the rock debris accumulated in the roller installation slot, avoids the rock debris blockage after long -time use and influences the normal rotation of roller, and the work stability of the roller rotation is stable, durable, and improves the working stability of drill rod.

Description

Technical Field

[0001] This utility model belongs to the field of drilling tool technology, specifically relating to a novel drilling stabilizer. Background Technology

[0002] Drilling stabilizers are commonly used tools to ensure stable drilling and prevent deviation. There are three common types: rigid stabilizers, rubber sleeve stabilizers, and roller stabilizers. Roller stabilizers, in addition to their basic anti-deviation function, also offer advantages such as reducing frictional resistance, lowering high-friction torque, and smoothing the wellbore. The main limitation to the operation of roller stabilizers is that rock cuttings falling from the wellbore can cause the rollers to jam. Current technologies have provided good solutions for the sealing performance of the roller shaft, such as the anti-loosening and wear-resistant stabilizing roller stabilizer disclosed in patent 202111674972.5, which improves the sealing and lubrication performance of the roller shaft. Although this technology solves the problem of roller shaft jamming to some extent, after prolonged operation, some rock cuttings still accumulate in the grooves where the rollers are installed. Excessive accumulation still affects roller rotation and increases maintenance costs. Therefore, it is essential to develop a new type of drilling stabilizer that can remove rock cuttings accumulated in the grooves where the rollers are installed. Utility Model Content

[0003] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a new type of drilling stabilizer.

[0004] The purpose of this utility model is achieved as follows: It includes a stabilizer body. Along the circumference of the stabilizer body, three equally spaced first grooves are formed on the side wall of the stabilizer body. A second groove is formed on the side wall of the stabilizer body between two adjacent first grooves. A cylindrical roller is longitudinally rotatably arranged within the second groove. Alloy protrusions are embedded on the surface of the cylindrical roller, and these protrusions contact the well wall. The two sides of the second groove are open outwards. A spiral guide groove is formed from top to bottom on the surface of the cylindrical roller along its circumference. Several paddles are spaced apart and embedded within the spiral guide groove, and the paddles are longitudinally oriented. The alloy protrusions are distributed in the gaps between the upper and lower parts of the spiral guide groove. A truncated cone is fixed at each end of the cylindrical roller, and a scraper is fixed on the side of the truncated cone, oriented longitudinally, with its edge not contacting the well wall.

[0005] The stabilizer body has built-in threads for connecting the drill pipe. Before use, the stabilizer and drill pipe should be assembled. The alloy protrusions can be fixed to the surface of the cylindrical roller using common welding processes in the field. The alloy protrusions not only reduce the contact area, but their high-strength material also has high wear resistance. The multiple alloy protrusions distributed on the roller surface continuously scrape the well wall and trim the well wall to maintain the regularity of the wellbore. For the rotating connection between the roller and the second groove, its shaft is usually equipped with a sealing structure to prevent debris from entering. The sealing structure of the roller shaft is common knowledge in the field, and its specific sealing structure will not be described in detail.

[0006] Preferably, the alloy protrusions are spherical.

[0007] Preferably, the gap between the upper and lower parts of the spiral guide groove has one to three rows of alloy protrusions, and the spacing between adjacent alloy protrusions is equal. The specific number of alloy protrusions can be flexibly selected according to the needs and the size of the gap between the upper and lower parts of the spiral guide groove.

[0008] The spiral angle of the spiral guide groove is preferably 10°~20°.

[0009] Preferably, the cross-section of the spiral guide groove is an arc-shaped groove.

[0010] Preferably, a cone is provided with two symmetrical scrapers, and the two scrapers improve the chip removal efficiency.

[0011] The beneficial effects of this utility model are as follows: This utility model adopts a point contact design with multi-alloy protruding teeth, which effectively reduces the frictional resistance between the contact part and the well wall, and can automatically discharge the rock cuttings accumulated in the roller mounting slot, avoiding the blockage of rock cuttings after long-term use and affecting the normal rotation of the roller. The roller's self-rotation operation is stable and durable, improving the working stability of the drill pipe. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the present invention;

[0013] Figure 2 This is a front view schematic diagram of a cylindrical roller;

[0014] In the diagram: 1-Stabilizer body, 2-First groove, 3-Second groove, 4-Cylindrical roller, 5-Alloy protrusion, 6-Spiral guide groove, 7-Paddle, 8-Frustum, 9-Scraper, 10-Shaft. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any modifications or substitutions made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0016] Example 1

[0017] As attached Figures 1-2 As shown, the novel drilling stabilizer of this embodiment includes a stabilizer body 1. Along the circumference of the stabilizer body 1, three equally spaced first grooves 2 are formed on the side wall of the stabilizer body 1. A second groove 3 is formed on the side wall of the stabilizer body 1 between two adjacent first grooves 2. A cylindrical roller 4 is longitudinally rotatably disposed within the second groove 3. Alloy protrusions 5 are inlaid on the surface of the cylindrical roller 4, and these protrusions 5 are in contact with the well wall. The alloy protrusions 5 are spherical. The two sides of the second groove 3 are open outwards. Along the circumference of the cylindrical roller 4, the cylindrical roller... 4. A spiral guide groove 6 is formed from top to bottom on the surface. The cross-section of the spiral guide groove 6 is an arc-shaped groove. Several paddles 7 are fixedly embedded in the spiral guide groove 6 at intervals. The paddles 7 are longitudinal. The alloy protrusions 5 are distributed in the gap between the upper and lower parts of the spiral guide groove 6. There are three rows of alloy protrusions 5 in the gap between the upper and lower parts of the spiral guide groove 6. The spacing between adjacent alloy protrusions 5 is equal. A truncated cone 8 is fixed at both ends of the cylindrical roller 4. Two symmetrical scrapers 9 are fixed on the side of one truncated cone 8. The scrapers 9 are longitudinal and the edges of the scrapers 9 do not contact the well wall.

[0018] The working principle and process of this utility model are as follows: This stabilizer is installed on the drill pipe. During the operation of the drill pipe, three cylindrical rollers 4 rotate. The stabilizer plays the role of straightening the drill pipe. Since the cylindrical rollers 4 contact the well wall through the alloy convex teeth 5, the contact area is small, thereby reducing the frictional resistance with the well wall, reducing the torque, and improving the stability of drilling operations. The alloy convex teeth 5 are highly durable and can trim the well wall. Some rock cuttings that fall off the well wall are carried into the second groove 3 as the cylindrical rollers 4 rotate. The spiral guide groove 6 rotates with the cylindrical rollers 4. In conjunction with the paddle 7, it helps to guide some of the rock cuttings accumulated in the second groove 3 to the end of the cylindrical rollers 4 and discharge them. The rock cuttings accumulated near the cone 8 are scraped to the outside of the second groove 2 by the rotating scraper 9, avoiding the rock cuttings from clogging the second groove 3 and ensuring the stable rotation of the cylindrical rollers 4.

Claims

1. A novel drilling stabilizer, comprising a stabilizer body (1), three equally spaced first grooves (2) formed on the side wall of the stabilizer body (1) along the circumference of the stabilizer body (1), and a second groove (3) formed on the side wall of the stabilizer body (1) between two adjacent first grooves (2), wherein a cylindrical roller (4) is longitudinally rotatably arranged in the second groove (3), and alloy protrusions (5) are inlaid on the surface of the cylindrical roller (4), the alloy protrusions (5) contacting the well wall, characterized in that... The second groove (3) is open on both sides. Along the circumference of the cylindrical roller (4), a spiral guide groove (6) is provided on the surface of the cylindrical roller (4) from top to bottom. Several paddles (7) are spaced apart and embedded in the spiral guide groove (6). The paddles (7) are longitudinal. The alloy protrusions (5) are distributed in the gap between the upper and lower parts of the spiral guide groove (6). A cone (8) is fixed at both ends of the cylindrical roller (4). A scraper (9) is fixed on the side of the cone (8). The scraper (9) is longitudinal. The edge of the scraper (9) does not contact the well wall.

2. The novel drilling stabilizer according to claim 1, characterized in that... The alloy protrusion (5) is spherical.

3. The novel drilling stabilizer according to claim 1, characterized in that... The gap between the upper and lower parts of the spiral guide groove (6) has one to three rows of alloy protrusions (5), and the spacing between adjacent alloy protrusions (5) is equal.

4. The novel drilling stabilizer according to claim 1, characterized in that... The spiral guide groove (6) has a circular arc-shaped groove in cross section.

5. The novel drilling stabilizer according to claim 1, characterized in that... A truncated cone (8) has two symmetrical scrapers (9).

Images