Drilling tool face stabilizer

Abstract

The utility model relates to a drilling tool face stabilizer, which belongs to a centralizing device and is characterized in that a drill rod is fixed at the top of a drill bit, a stabilizing component is fixed on the outer wall of the drill rod, a stabilizing shell of the stabilizing component consists of an inner barrel and an outer barrel, and an upper sealing plate and a lower sealing plate are arranged at two ends of an annular space cavity between the inner barrel and the outer barrel. Two limiting rings are fixed to the upper end and the lower end of the outer wall of the inner cylinder correspondingly, annular discs are rotationally connected into the two limiting rings correspondingly, push blocks are fixed to the outer walls of the annular discs, a gear ring is fixed to the top of the annular disc at the upper end, and a connecting cylinder is fixed between the upper annular disc and the lower annular disc. An opening is formed in the outer wall of the outer cylinder, moving assemblies are arranged at the upper end and the lower end of the annular space cavity respectively, and a stabilizing roller is arranged between the two moving assemblies. A motor is fixed to one side of the upper end of the upper sealing plate, and a gear is fixed to the output end of the motor and meshed with the gear ring. According to the device, a hole can be kept in a relatively vertical state, the drilling efficiency is improved, a drill bit can be conveniently pulled upwards and taken out, and the situation that the drill bit is stuck is avoided.

Description

Technical Field

[0001] The utility model belongs to a straightening device, in particular to a drilling tool face stabilizer. Background Art

[0002] Stabilizers for drilling tools are important equipment in the drilling process of oil, natural gas and geological exploration. Their main function is to maintain a constant drilling pressure, improve the mechanical drilling speed, and effectively control the change rate of well inclination and azimuth. This stabilizer is particularly critical in directional well drilling. By reducing vibration and maintaining the stability of the drill bit drilling pressure, it can significantly improve the drilling speed and wellbore quality.

[0003] After searching, the Chinese patent with publication number CN104832090A, entitled "A Drilling Tool Face Stabilizer", is designed to effectively stabilize the tool face position, prevent the tool face from deviating, and does not affect the axial feed of the drill string. It is a purely mechanical structure, simple and reliable. However, when drilling to a deeper position, the drill bit will be at a longer distance from the stabilizer, and the drill bit will still deviate. Another example is the Chinese patent with publication number CN204266945U, entitled "A Drill Tool Stabilizer with a Straightening Structure". This utility model can improve the working stability of the drill string system and reduce the risk of drill tool sticking. However, this design uses a "ploughing" method to scrape the well wall, which can cause slippage or deviation during scraping and cannot effectively play a stabilizing role.

[0004] To sum up, during the drilling process, the drill bit is prone to deviation, which makes the drilling surface unable to be stabilized, resulting in a large curvature of the drilled hole. The staff needs to constantly adjust the drilling position to reduce the curvature of the hole, which will consume a lot of labor. In addition, long time and multiple adjustments will greatly reduce the drilling efficiency. Therefore, we propose a drilling tool face stabilizer. Utility Model Content

[0005] The utility model provides a drilling tool face stabilizer to solve the deficiencies of the prior art.

[0006] The utility model discloses a drilling tool face stabilizer, comprising a drill bit, a drill rod fixedly connected to the top of the drill bit, a stabilizing assembly fixed to the outer side wall of the drill rod, the stabilizing assembly comprising a stabilizing shell, the stabilizing shell being a cylindrical structure, consisting of an inner cylinder and an outer cylinder, and an upper sealing plate and a lower sealing plate respectively arranged at both ends of an annular gap cavity formed between the inner cylinder and the outer cylinder to seal it, two limiting rings are fixed at the upper and lower ends of the outer wall of the inner cylinder, annular disks are rotatably connected in the two limiting rings, more than three push blocks are fixedly connected around the outer wall of the annular disk, a gear ring is fixedly connected to the top of the annular disk at the upper end, and a connecting cylinder is fixedly connected between the upper and lower annular disks; more than three openings are opened on the outer wall of the outer cylinder, moving assemblies are respectively arranged at the upper and lower ends of the annular gap cavity corresponding to each of the openings, and a stabilizing roller is arranged between the upper and lower moving assemblies; a motor is fixed on one side of the upper end of the upper sealing plate, the output end of the motor passes through the upper sealing plate, and a rotating rod is fixed at its end, a gear is fixed at the bottom of the rotating rod, and the gear is meshed with the gear ring.

[0007] As a further improvement of the utility model, the moving component includes a connecting plate, a connecting block, a slider and a sliding rod. A rotating shaft is rotatably connected to the center position of the upper and lower ends of the stabilizing roller, and the other end of the rotating shaft is fixed to the connecting plate. A connecting block is fixed to one side of the top of the connecting plate, and a slider is fixedly connected to the top of the connecting block. A sliding hole is opened inside the slider, and a sliding rod is slidably connected to the inner wall of the sliding hole. The two ends of the sliding rod are respectively fixed to the outer wall of the inner cylinder and the inner wall of the outer cylinder, and a spring is sleeved on the outer wall of one end of the sliding rod, and one end of the spring is fixed to the slider, and the other end is fixed to the outer wall of the inner cylinder.

[0008] As a further improvement of the utility model, more than three dust exhaust ports are provided on the lower sealing plate along its circumference.

[0009] As a further improvement of the utility model, one side surface of the push block is arranged as an inclined surface, and the inclined surface is in contact with the outer surface of the connecting block.

[0010] The utility model discloses a drilling tool face stabilizer with reasonable structural design. By setting a stabilizing component, when the motor starts to drive the gear to rotate slowly counterclockwise, the engagement of the gear and the gear ring drives the annular disk to rotate, so that the push block pushes the connecting block to move, and then the stabilizing roller is moved out from the opening provided on the outer cylinder to contact the inner wall of the hole, so that the stabilizing shell and the drill bit are located at the center of the hole, and then the hole is continuously drilled based on the initial hole to keep the hole in a relatively vertical state, which can reduce the occurrence of bending and greatly improve the drilling efficiency; when the motor is started to rotate clockwise, the gear drives the gear ring to rotate in the opposite direction, so that the annular disk drives the push block to reset, and the slider pulls the stabilizing roller back to its original position under the action of the spring elasticity, so that the stabilizing roller is stored in the stabilizing shell, thereby facilitating the drill bit to be pulled upward and taken out, and avoiding the situation of being stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a cross-sectional view of the utility model;

[0013] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0014] Figure 4 This is a schematic diagram of the overall structure of the stabilizing roller of the utility model;

[0015] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0016] Figure 6 This is a schematic diagram of the annular disk structure of the utility model. DETAILED DESCRIPTION

[0017] The utility model discloses a drilling tool face stabilizer, comprising a drill bit 1, wherein a drill rod 11 is fixedly connected to the top of the drill bit 1, a stabilizing assembly 12 is fixed to the outer wall of the drill rod 11, and the stabilizing assembly 12 comprises a stabilizing shell 121. The stabilizing shell 121 is a cylindrical structure, which is composed of an inner cylinder 124 and an outer cylinder 125, and an upper sealing plate and a lower sealing plate are respectively provided at both ends of an annular gap cavity formed between the inner cylinder 124 and the outer cylinder 125 to seal it, two limiting rings 141 are fixed to the upper and lower ends of the outer wall of the inner cylinder 124, an annular disk 14 is rotatably connected in the two limiting rings 141, more than three push blocks 144 are fixedly connected to the outer wall of the annular disk 14, a gear ring 142 is fixedly connected to the top of the annular disk 14 at the upper end, and a connecting cylinder 143 is fixedly connected between the upper and lower annular disks 14.

[0018] More than three openings are provided on the outer wall of the outer cylinder 125, and moving components are respectively provided at the upper and lower ends of the annular gap cavity corresponding to each of the openings, and a stabilizing roller 123 is arranged between the upper and lower moving components; the moving component comprises a connecting plate 231, a connecting block 232, a slider 233 and a sliding rod 234, and a rotating shaft is rotatably connected to the center position of the upper and lower ends of the stabilizing roller 123, and the other end of the rotating shaft is fixed to the connecting plate 231, and a connecting block 232 is fixed to the top side of the connecting plate 231, and a slider 233 is fixedly connected to the top of the connecting block 232, and a sliding hole is provided inside the slider 233, and a sliding rod 234 is slidably connected to the inner wall of the sliding hole, and the two ends of the sliding rod 234 are respectively fixed to the outer wall of the inner cylinder 124 and the inner wall of the outer cylinder 125, and a spring 235 is sleeved on the outer wall of one end of the sliding rod 234, and one end of the spring 235 is fixed to the slider 233, and the other end is fixed to the outer wall of the inner cylinder 124.

[0019] A motor 13 is fixed on one side of the upper end of the upper sealing plate, the output end of the motor 13 passes through the upper sealing plate, and a rotating rod 131 is fixed at its end, a gear 132 is fixed at the bottom of the rotating rod 131, and the gear 132 is meshed with a gear ring 142; more than three dust exhaust ports 122 are opened on the lower sealing plate along its circumference.

[0020] One side surface of the push block 144 is arranged as an inclined surface, and the inclined surface contacts the outer surface of the connecting block 232 .

[0021] When the utility model is in use, the drill bit 1 drills a hole in the ground. When the stabilizing shell 121 is completely moved into the hole, the motor 13 can be started to drive the gear 132 to rotate slowly counterclockwise. Through the meshing of the gear 132 and the gear ring 142, the gear ring 142 also rotates, thereby driving the annular disk 14 to rotate in the limiting ring 141. At this time, the pushing block 144 will push the connecting block 232, driving the slider 233 to slide on the slide rod 234, until the stabilizing roller 123 is pushed out of the stabilizing shell 121 and contacts the inner wall of the hole. The motor 13 stops working. At this time, the spring 235 is in a stretched state, so that the stabilizing shell 121 drives the drill bit 1 to the center of the hole through the drill rod 11, and then the drilling is continued based on the initial hole. The hole can be kept in a relatively vertical state, which can reduce the occurrence of bending; since the stabilizing roller 123 has a moving distance, the device can be used on drilling equipment of different widths; since a large amount of dust will be generated during drilling, the dust entering the stabilizing shell 121 will be discharged through the dust outlet 122, which can reduce the residual situation; when the drilling is completed, the motor 13 can be started to rotate clockwise, and the gear 132 drives the gear ring 142 to rotate in the opposite direction, then the annular disk 14 will drive the push block 144 to reset, and the slider 233 will pull the stabilizing roller 123 back to its original position under the elastic action of the spring 235, so that the stabilizing roller 123 is stored in the stabilizing shell 121, so that it is convenient to pull the drill bit 1 upward and take it out to avoid getting stuck.

Claims

1. A drilling tool face stabilizer, comprising a drill bit (1), a drill rod (11) being fixedly connected to the top of the drill bit (1), and a stabilizing component (12) being fixed to the outer side wall of the drill rod (11), characterized in that: The stabilizing assembly (12) comprises a stabilizing shell (121), which is a cylindrical structure and is composed of an inner cylinder (124) and an outer cylinder (125), and an upper sealing plate and a lower sealing plate are respectively provided at both ends of an annular gap cavity formed between the inner cylinder (124) and the outer cylinder (125) to seal it, two limiting rings (141) are fixed at the upper and lower ends of the outer wall of the inner cylinder (124), an annular disk (14) is rotatably connected inside the two limiting rings (141), more than three push blocks (144) are fixedly connected to the outer wall of the annular disk (14), and a push block (144) is fixedly connected to the top of the upper annular disk (14) A gear ring (142) is provided with a connecting cylinder (143) fixedly connected between the upper and lower annular disks (14); more than three openings are provided on the outer wall of the outer cylinder (125); moving assemblies are provided at the upper and lower ends of the annular gap cavity corresponding to each of the openings, respectively; a stabilizing roller (123) is provided between the upper and lower moving assemblies; a motor (13) is fixed to one side of the upper end of the upper sealing plate; the output end of the motor (13) passes through the upper sealing plate, and a rotating rod (131) is fixed to the end thereof; a gear (132) is fixed to the bottom of the rotating rod (131); the gear (132) is meshed with the gear ring (142).

2. A drilling tool face stabilizer according to claim 1, characterized in that: The moving assembly comprises a connecting plate (231), a connecting block (232), a sliding block (233) and a sliding rod (234); a rotating shaft is rotatably connected to the center positions of the upper and lower ends of the stabilizing roller (123); the other end of the rotating shaft is fixed to the connecting plate (231); a connecting block (232) is fixed to one side of the top of the connecting plate (231); the top of the connecting block (232) is fixedly connected to the sliding block (233); a sliding hole is provided inside the sliding block (233); the inner wall of the sliding hole is slidably connected to the sliding rod (234); the two ends of the sliding rod (234) are respectively fixed to the outer wall of the inner cylinder (124) and the inner wall of the outer cylinder (125); a spring (235) is sleeved on the outer wall of one end of the sliding rod (234); one end of the spring (235) is fixed to the sliding block (233) and the other end is fixed to the outer wall of the inner cylinder (124).

3. A drilling tool face stabilizer according to claim 1, characterized in that: More than three dust exhaust ports (122) are provided on the lower sealing plate along its circumference.

4. A drilling tool face stabilizer according to claim 1, characterized in that: One side surface of the push block (144) is arranged as an inclined surface, and the inclined surface is in contact with the outer surface of the connection block (232).

Images