Bushing for petroleum drilling turntable

Abstract

The utility model belongs to the technical field of turntable bushings, and particularly relates to a bushing for a petroleum drilling turntable, which comprises two symmetrically arranged semi-bushing bodies, and the opposite surfaces of the semi-bushing bodies are provided with slip semi-placing parts and positioning holes positioned on the two sides of the slip semi-placing parts; when the two semi-bushing bodies are in contact, the two slip semi-placing parts are matched to form a slip placing part so as to place and support a slip; according to the bushing for the petroleum drilling rotary table, one half of the positioning rod is inserted into the positioning hole of one half bushing body, then the other half bushing body is in contact with the current half bushing body, and the two positioning rods are inserted into the two positioning holes of the two half bushing bodies correspondingly so that the two half bushing bodies can be prevented from moving up and down. And the other half of the positioning rod is inserted into the positioning hole of the other half bushing body, so that the axial relative displacement of the two half bushing bodies is eliminated, the displacement defect of a traditional split bushing is eliminated, the abrasion of the bushing is reduced, and the service life of the bushing is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of rotary table core-filling technology, specifically relating to a core-filling material for an oil drilling rotary table. Background Technology

[0002] In oil drilling operations, rotary table core fillers are an important component of rotary table equipment. Their main function is to adapt to drill pipes of different sizes, ensuring that the drill pipes can rotate stably in the rotary table and achieve efficient drilling operations.

[0003] Traditional oil drilling rotary tables often employ a split-type rotary table core, which facilitates installation and maintenance to some extent. However, in actual drilling operations, due to the complex drilling environment, the split-type rotary table core is prone to vertical movement under the high-speed rotation of the rotary table and the various complex forces transmitted by the drill pipe. Once this vertical movement occurs, the normal movement of the drill pipe is greatly affected. The drill pipe may wobble or deviate, failing to maintain a vertical and stable drilling state, thus compromising drilling verticality and affecting drilling quality. Moreover, the increased abnormal friction between the drill pipe and the core not only accelerates wear and tear on both, shortening their service life and increasing equipment replacement costs, but may also lead to safety accidents.

[0004] Therefore, in order to solve the above problems, it is necessary to design a filler core for oil drilling rotary tables. Utility Model Content

[0005] The purpose of this utility model is to provide a filler core for an oil drilling rotary table to solve the technical problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a filler core for an oil drilling rotary table, comprising:

[0007] Two symmetrically arranged semi-core bodies, each with a slip half-placement portion and positioning holes located on both sides of the slip half-placement portion on its opposite surface; wherein

[0008] When the two semi-core bodies are in contact, the two slip half-placement parts cooperate to form a slip placement part to place and support the slip;

[0009] Two positioning rods are inserted into the two positioning holes of the two halves of the core body to prevent the two halves of the core body from moving up and down.

[0010] Furthermore, the end of the positioning hole is provided with a first chamfer;

[0011] The positioning rod has a second chamfer at both ends.

[0012] Furthermore, the circumferential side of the positioning rod is provided with a flat portion.

[0013] Furthermore, two steel sleeve placement parts are symmetrically arranged on the top of the semi-repair core body;

[0014] The steel sleeve placement section is suitable for embedding a wear-resistant steel sleeve.

[0015] Furthermore, the top of the semi-complementary core body is symmetrically provided with two first threaded holes.

[0016] Furthermore, two second threaded holes are symmetrically arranged on the side of the semi-complementary core body.

[0017] The beneficial effects of this utility model are:

[0018] (I) This utility model inserts one half of the positioning rod into the positioning hole of one half of the core body, and then contacts the other half of the core body with the current half of the core body so that the other half of the positioning rod is inserted into the positioning hole of the other half of the core body, thereby eliminating the relative displacement of the two half core bodies in the axial (vertical direction). The assembled core is then placed in the turntable, and the turntable cooperates with the radial (horizontal direction) relative displacement of the two half core bodies, thereby eliminating the axial movement defect of the traditional split core, reducing the wear of the core, and extending the service life of the core.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is an exploded view of a preferred embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of a preferred embodiment of the present invention;

[0024] Figure 3 This is a perspective view of a preferred embodiment of the present invention.

[0025] In the picture:

[0026] The semi-core body 1, the slip half placement part 101, the positioning hole 102, the first chamfer part 1021, the steel sleeve placement part 103, the first threaded hole 104, and the second threaded hole 105;

[0027] Positioning rod 2, second chamfered part 201, flat part 202. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example 1

[0029] like Figures 1 to 3 As shown, this embodiment provides a filler core for an oil drilling rotary table, comprising:

[0030] Two symmetrically arranged semi-core bodies 1 each have a slip half-placement portion 101 and positioning holes 102 located on both sides of the slip half-placement portion 101 on their opposite surfaces. When the two semi-core bodies 1 are in contact, the two slip half-placement portions 101 cooperate to form a slip placement portion to place and support the slip. Two positioning rods 2 are respectively inserted into the two positioning holes 102 of the two semi-core bodies 1 to prevent the two semi-core bodies 1 from moving up and down. The symmetrical split design of the core facilitates installation in the turntable. At the same time, the split design also facilitates maintenance. When one wears out, only one needs to be replaced, while the other can still be used normally, thus reducing maintenance costs.

[0031] In this embodiment, by inserting half of the positioning rod 2 into the positioning hole 102 of one half-core body 1, and then contacting the other half-core body 1 with the current half-core body 1, the other half of the positioning rod 2 is inserted into the positioning hole 102 of the other half-core body 1, thereby eliminating the relative axial (vertical) displacement of the two half-core bodies 1. The assembled core is then placed in the turntable, and the turntable cooperates with the radial (horizontal) relative displacement of the two half-core bodies 1, thereby eliminating the axial movement defect of the traditional split core, reducing the wear of the core, and extending the service life of the core.

[0032] The end of the positioning hole 102 is provided with a first chamfer 1021; the two ends of the positioning rod 2 are provided with a second chamfer 201; by providing the first chamfer 1021 and the second chamfer 201, the positioning rod 2 can be easily inserted into the positioning hole 102.

[0033] The circumferential side of the positioning rod 2 is provided with a flat portion 202; by providing the flat portion 202, the gas in the positioning hole 102 can be discharged to prevent the positioning rod 2 from being installed in the correct position; since the positioning rod 2 needs to be inserted into the positioning hole 102, the positioning rod 2 and the positioning hole 102 form a piston structure, and the gas in the positioning hole 102 cannot be discharged quickly, which can easily cause the positioning rod 2 to be installed in the wrong position. After adding the flat portion 202, part of the inner wall of the positioning hole 102 and the flat portion 202 form an air passage, so as to facilitate the rapid discharge of the gas in the positioning hole 102.

[0034] The top of the semi-repair core body 1 is symmetrically provided with two steel sleeve placement parts 103; the steel sleeve placement parts 103 are suitable for embedding wear-resistant steel sleeves.

[0035] The top of the semi-complementary core body 1 is symmetrically provided with two first threaded holes 104; wherein the first threaded holes 104 are adapted to be threadedly connected to the lifting eye so as to lift the semi-complementary core body 1.

[0036] The side of the semi-repair core body 1 is symmetrically provided with two second threaded holes 105; wherein the second threaded holes 105 are adapted to be threadedly connected to the lifting eye, so as to facilitate the installation and removal of the two semi-repair core bodies 1.

[0037] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0038] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A filler core for an oil drilling rotary table, characterized in that, include: Two symmetrically arranged semi-core bodies (1) each have a slip half-placement part (101) and positioning holes (102) on both sides of the slip half-placement part (101); wherein When the two semi-core bodies (1) are in contact, the two slip half placement parts (101) cooperate to form a slip placement part to place and support the slip; Two positioning rods (2) are inserted into the two positioning holes (102) of the two half-core bodies (1) respectively to prevent the two half-core bodies (1) from moving up and down.

2. The filler core for an oil drilling rotary table as described in claim 1, characterized in that, The end of the positioning hole (102) is provided with a first chamfer (1021). The positioning rod (2) has a second chamfer (201) at both ends.

3. The filler core for an oil drilling rotary table as described in claim 2, characterized in that, The circumferential side of the positioning rod (2) is provided with a flat part (202).

4. The filler core for an oil drilling rotary table as described in claim 3, characterized in that, The top of the semi-complementary core body (1) is symmetrically provided with two steel sleeve placement parts (103). The steel sleeve placement part (103) is suitable for embedding a wear-resistant steel sleeve.

5. The filler core for an oil drilling rotary table as described in claim 4, characterized in that, The top of the semi-complementary core body (1) is symmetrically provided with two first threaded holes (104).

6. The filler core for an oil drilling rotary table as described in claim 5, characterized in that, The side of the semi-complementary core body (1) is symmetrically provided with two second threaded holes (105).

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