Novel screw drill stabilizer

Abstract

The utility model belongs to the technical field of screw drilling tools, and particularly relates to a novel screw drilling tool stabilizer which comprises a stabilizer body, three stabilizing edges and corners are fixedly arranged outside the stabilizer body, a mounting groove is formed in one side of each stabilizing edge and corner, two limiting grooves are formed in the inner wall of the top of each mounting groove and the inner wall of the bottom of each mounting groove respectively, and each limiting groove is provided with a limiting groove. Through the arrangement of the adjusting plate, the rotating shaft, the gear and the tooth block, when the extending size of the stable corner angle on the stabilizer needs to be adjusted, the rotating disc is rotated anticlockwise, the rotating disc drives the ratchet wheel and the gear, and the gear and the tooth block are meshed to drive the adjusting plate to move outwards; the ratchet wheel can be locked through cooperation of the pawl and the spring, when the extending length of the adjusting plate is matched with the inner diameter of a drilling well, the rotating disc can be stopped rotating, the adjustable adjusting plate can change the specification of the stable edge angle, and therefore the device can be suitable for drilling wells of different sizes, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw drill tools, in particular to a new type of screw drill tool stabilizer. Background Art

[0002] The screw drill stabilizer is an indispensable device in geological exploration, oil or gas drilling. One or more are connected in series at a certain position of the drill pipe, which can protect the drill pipe and control the wellbore trajectory, smooth the well wall, and have a certain hole expansion effect. The screw drill stabilizer is generally composed of a hollow tubular body and a stabilizing edge. The wear-resistant surface of the stabilizing edge is the main structure to realize the function of the stabilizer. Its main function is to achieve the friction between the stabilizing edge and the drilling well wall. When working, the stabilizer is connected to the drill tool or pipe string and lowered into the well. The wear-resistant surface of the stabilizing edge resists the friction of the well wall to achieve the function of protecting and stabilizing the drill tool.

[0003] However, the existing stabilizer spiral stabilizer has fixed edge sizes and can only be applied to a certain size of drilling inner diameter, which limits the scope of application of the equipment. Therefore, a new type of screw drill stabilizer is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a new type screw drill stabilizer.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a new type of screw drill stabilizer, including a stabilizer body, three stabilizing edges are fixedly provided on the outside of the stabilizer body, a mounting groove is provided on one side of the stabilizing edge, two limit grooves are provided on the top inner wall and the bottom inner wall of the mounting groove, an adjustment structure is provided in the mounting groove, and a protective structure is provided on the top of the stabilizing edge.

[0006] As a further description of the above technical solution:

[0007] The adjustment structure includes an adjustment plate movably connected to the mounting groove, a rotating shaft movably connected to the inner wall at the top of the mounting groove, a positioning shaft fixedly connected to the top of the stabilizing edge, and a vertical plate fixedly connected to the top of the stabilizing edge. A pawl is movably provided on the positioning shaft, a pull plate is fixedly provided on the top of the pawl, a spring is fixedly provided on one side of the vertical plate, one end of the spring is fixedly connected to the pawl, a ratchet is fixedly provided on the rotating shaft, a turntable is fixedly provided on the top of the rotating shaft, a gear is fixedly provided on the bottom end of the rotating shaft, a plurality of tooth blocks are fixedly provided on the top of the adjustment plate, and the gears and tooth blocks are meshed for transmission.

[0008] As a further description of the above technical solution:

[0009] Two groups of limit blocks are fixedly arranged at the top and bottom of the adjusting plate, and the limit blocks are movably connected with the limit grooves.

[0010] As a further description of the above technical solution:

[0011] A circular hole is provided on the inner wall of the top of the installation groove, and a bearing is fixedly arranged in the circular hole, and the bearing is fixedly sleeved on the rotating shaft.

[0012] As a further description of the above technical solution:

[0013] The protection structure includes an installation ring fixedly connected to the top of the stable edge, and a protective cover is movably arranged on the installation ring.

[0014] As a further description of the above technical solution:

[0015] Threads are provided on the outer wall of the installation ring and the inner wall of the protective cover, and the installation ring and the protective cover are installed by threads.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the prior art, for this new type of stabilizer of a positive displacement motor drill, by setting the adjusting plate, rotating shaft, positioning shaft, vertical plate, ratchet pawl, spring, ratchet wheel, turntable, limit block, gear and tooth block, when it is necessary to adjust the protruding dimension of the stable edge on the stabilizer, rotate the turntable counterclockwise. The turntable drives the ratchet wheel and the gear, and the meshing of the gear and the tooth block drives the adjusting plate to move outwards. The cooperation of the ratchet pawl and the spring can lock the ratchet wheel. When the protruding length of the adjusting plate matches the inner diameter of the drilling, stop rotating the turntable. The adjustable adjusting plate can change the specification of the stable edge, so that the device can be applied to drillings of different sizes, improving the practicability of the device.

[0018] 2. Compared with the prior art, for this new type of stabilizer of a positive displacement motor drill, by setting the installation ring and the protective cover, after completing the adjustment of the size of the stable edge, reinstall the protective cover on the installation ring. The setting of the protective cover can protect the ratchet wheel, ratchet pawl and rotating shaft. It can not only prevent the rotating shaft from being accidentally touched, but also prevent dust and impurities from entering the rotating part between the rotating shaft and the inner wall of the top of the installation groove, ensuring the smooth rotation of the rotating shaft. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structure diagram of a new type of stabilizer of a positive displacement motor drill proposed by the utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of a new type of stabilizer of a positive displacement motor drill proposed by the utility model after removing the protection structure;

[0021] Figure 3Exploded schematic diagram of the protection structure in a new type of stabilizer for a screw drill tool proposed by the present utility model;

[0022] Figure 4 Stereoscopic schematic diagram of the adjustment structure in a new type of stabilizer for a screw drill tool proposed by the present utility model;

[0023] Figure 5 Stereoscopic structure schematic diagram of the stabilizing edges in a new type of stabilizer for a screw drill tool proposed by the present utility model;

[0024] Figure 6 Enlarged structure schematic diagram of part A in a new type of stabilizer for a screw drill tool proposed by the present utility model.

[0025] Legend description:

[0026] 1. Stabilizer body; 2. Stabilizing edges; 3. Installation groove; 4. Limit groove; 5. Adjustment structure; 501. Adjusting plate; 502. Rotating shaft; 503. Positioning shaft; 504. Vertical plate; 505. Pawl; 506. Spring; 507. Ratchet; 508. Turntable; 509. Limit block; 510. Gear; 511. Tooth block; 6. Protection structure; 601. Installation ring; 602. Protective cover. Specific implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Refer to Figures 1 to 6 The present utility model provides a new type of stabilizer for a screw drill tool: including a stabilizer body 1, three stabilizing edges 2 are fixedly arranged on the outside of the stabilizer body 1, an installation groove 3 is arranged on one side of the stabilizing edge 2, and two limit grooves 4 are arranged on both the top inner wall and the bottom inner wall of the installation groove 3;

[0029] Refer to Figure 4 and Figure 6, To achieve the purpose of adjusting the size of the stabilizer, an adjustment structure 5 is provided in the installation groove 3. The adjustment structure 5 includes an adjustment plate 501 movably connected to the installation groove 3, a rotating shaft 502 movably connected to the inner wall of the top of the installation groove 3, a positioning shaft 503 fixedly connected to the top of the stable edge 2, and a vertical plate 504 fixedly connected to the top of the stable edge 2. A circular hole is provided in the inner wall of the top of the installation groove 3, and a bearing is fixedly provided in the circular hole. The bearing is fixedly sleeved on the rotating shaft 502. Two groups of limit blocks 509 are fixedly provided at the top and bottom of the adjustment plate 501. The limit blocks 509 are movably connected to the limit grooves 4. A pawl 505 is movably provided on the positioning shaft 503. A pull plate is fixedly provided at the top of the pawl 505. A spring 506 is fixedly provided on one side of the vertical plate 504. One end of the spring 506 is fixedly connected to the pawl 505. A ratchet wheel 507 is fixedly provided on the rotating shaft 502. A turntable 508 is fixedly provided at the top of the rotating shaft 502. A gear 510 is fixedly provided at the bottom end of the rotating shaft 502. A plurality of tooth blocks 511 are fixedly provided at the top of the adjustment plate 501. The gear 510 and the tooth blocks 511 are in meshing transmission. When the turntable 508 is rotated counterclockwise, the turntable 508 drives the ratchet wheel 507 and the gear 510. The meshing of the gear 510 and the tooth blocks 511 drives the adjustment plate 501 to move outwards. The cooperation of the pawl 505 and the spring 506 can lock the ratchet wheel 507. When the extended length of the adjustment plate 501 is adapted to the inner diameter of the drilling, the rotation of the turntable 508 can be stopped. The adjustable adjustment plate 501 can change the specifications of the stable edge 2, so that the equipment can be applied to drillings of different sizes and improve the practicability of the equipment;

[0030] Refer to Figure 3 , To achieve the purpose of protection, a protection structure 6 is provided at the top of the stable edge 2. The protection structure 6 includes an installation ring 601 fixedly connected to the top of the stable edge 2. A protective cover 602 is movably provided on the installation ring 601. Threads are provided on the outer wall of the installation ring 601 and the inner wall of the protective cover 602. The installation ring 601 and the protective cover 602 are installed by threads. The setting of the protective cover 602 can protect the ratchet wheel 507, the pawl 505 and the rotating shaft 502. It can not only prevent the rotating shaft 502 from being accidentally touched, but also prevent dust and impurities from entering the rotating part between the rotating shaft 502 and the inner wall of the top of the installation groove 3, ensuring the smooth rotation of the rotating shaft 502.

[0031] Working principle: When the inner diameter of the drilling well is larger than the size of the stabilizer, the extending length of the adjusting plate 501 can be adjusted. First, rotate the protective cover 602 counterclockwise to make it fall off the mounting ring 601, and then rotate the turntable 508 counterclockwise. The turntable 508 drives the ratchet wheel 507 and the gear 510. The gear 510 meshes with the tooth block 511 to drive the adjusting plate 501 to move outwards. The groove on the ratchet wheel 507 pushes the pawl 505 outwards. When the pawl 505 disengages from one groove of the ratchet wheel 507, the spring 506 will push the pawl 505 to quickly snap into another groove of the ratchet wheel 507 to achieve the positioning of the ratchet wheel 507. When the extending length of the adjusting plate 501 is adapted to the inner diameter of the drilling well, the rotation of the turntable 508 can be stopped, and then the protective cover 602 can be reinstalled on the mounting ring 601. The setting of the protective cover 602 can protect the ratchet wheel 507, the pawl 505 and the rotating shaft 502. It can not only prevent the rotating shaft 502 from being accidentally touched, but also prevent dust and impurities from entering the rotating part between the rotating shaft 502 and the inner wall of the top of the mounting groove 3, ensuring the smooth rotation of the rotating shaft 502.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of screw drill stabilizer, comprising a stabilizer body (1), characterized in that: Three stabilizing corners (2) are fixedly provided on the outside of the stabilizer body (1); a mounting groove (3) is provided on one side of the stabilizing corner (2); two limiting grooves (4) are provided on the top inner wall and the bottom inner wall of the mounting groove (3); an adjusting structure (5) is provided in the mounting groove (3); and a protective structure (6) is provided on the top of the stabilizing corner (2).

2. A new type screw drill stabilizer according to claim 1, characterized in that: The adjustment structure (5) comprises an adjustment plate (501) movably connected to the installation groove (3), a rotating shaft (502) movably connected to the inner wall of the top of the installation groove (3), a positioning shaft (503) fixedly connected to the top of the stabilizing corner (2), and a vertical plate (504) fixedly connected to the top of the stabilizing corner (2), wherein a ratchet (505) is movably provided on the positioning shaft (503), a pulling plate is fixedly provided on the top of the ratchet (505), and one side of the vertical plate (504) is fixedly connected to the top of the stabilizing corner (2). A spring (506) is fixedly provided on the side, one end of the spring (506) is fixedly connected to the pawl (505), a ratchet (507) is fixedly provided on the rotating shaft (502), a rotating disk (508) is fixedly provided on the top of the rotating shaft (502), a gear (510) is fixedly provided on the bottom end of the rotating shaft (502), a plurality of tooth blocks (511) are fixedly provided on the top of the adjusting plate (501), and the gears (510) and the tooth blocks (511) are meshed for transmission.

3. A new type screw drill stabilizer according to claim 2, characterized in that: Two groups of limit blocks (509) are fixedly provided on the top and bottom of the adjustment plate (501), and the limit blocks (509) are movably connected to the limit grooves (4).

4. A new type screw drill stabilizer according to claim 2, characterized in that: A circular hole is provided on the inner wall of the top of the installation groove (3), a bearing is fixedly provided in the circular hole, and the bearing is fixedly sleeved on the rotating shaft (502).

5. A new type screw drill stabilizer according to claim 1, characterized in that: The protective structure (6) comprises a mounting ring (601) fixedly connected to the top of the stabilizing corner (2), and a protective cover (602) is movably provided on the mounting ring (601).

6. A new type screw drill stabilizer according to claim 5, characterized in that: The outer wall of the mounting ring (601) and the inner wall of the protective cover (602) are both provided with threads, and the mounting ring (601) and the protective cover (602) are mounted via the threads.

Images