CN214303726U - Stress dispersion type drill collar of drilling machine - Google Patents
Stress dispersion type drill collar of drilling machine Download PDFInfo
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- CN214303726U CN214303726U CN202022427890.8U CN202022427890U CN214303726U CN 214303726 U CN214303726 U CN 214303726U CN 202022427890 U CN202022427890 U CN 202022427890U CN 214303726 U CN214303726 U CN 214303726U
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Abstract
The utility model discloses a stress dispersion type drill collar of a drilling machine, which comprises a drill collar body, wherein a male joint and a female joint are integrally formed at two ends of the drill collar body; an internal thread is arranged at the female joint; the male connector is provided with an external thread screwed with the male connector; one end of the drill collar body, which is close to the male connector, is provided with a long clamping column; one end of the drill collar body, which is close to the female joint, is provided with a short clamping column; the peripheries of the long clamping connection column and the short clamping connection column are opposite to each other and are integrally made into a straight edge; a limiting cylinder and a clamping cylinder piece are clamped between the long clamping column and the short clamping column; an upper pressure groove is formed in the upper part of the inner side of the limiting cylinder; a straight groove embedded with the straight edge is formed in the inner side of the limiting cylinder at the lower part of the upper pressure groove; the stress dispersion type drill collar of the utility model adopts the limiting cylinder to seal the connection position of the male head and the female head, and utilizes the limiting cylinder and the clamping column to transmit torque and bending moment force to the whole drill collar body; thereby prolonging the service life of the drill collar.
Description
Technical Field
The utility model relates to a rig accessory, concretely relates to stress dispersion formula rig drill collar belongs to rig accessory technical field.
Background
The drill collar is connected to the lower part of the whole drill string and is a main component of the lower drilling tool assembly; the drill collar has the main functions of applying bit pressure to a drill bit and transmitting torque to ensure the smooth drilling process, and the drill collar bears the combined action of various loads such as tension, compression, bending, torsion and the like in the drilling process; along with the popularization and application of advanced drilling technologies such as horizontal well technology, directional well technology and the like, the abrasion of the sealing shoulder surface of the drill collar joint is obviously increased; under the action of torque, bending moment and axial pressure, extrusion sinking, thread elongation or internal thread joint expansion buckle failure of the sealing shoulder surface of the external thread joint of the drill collar occur in a large amount, and the drill collar joint is broken and failed in serious conditions, so that the service life of the drill collar and the drilling speed are seriously influenced; for this reason, chinese patent application No.: 201020119543.2, discloses a wear-resistant drill collar, which is formed by welding a hard wear-resistant layer on the inner thread joint end of a common drill collar, wherein the hard wear-resistant layer is wear-resistant and protects the external diameter of the sealing shoulder surface of the joint of the drill collar; but it still does not address the problem of thread elongation or female connection buckle expansion failure due to torque, bending moment and axial pressure.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a stress dispersion formula rig drill collar through improving the drill collar body to can disperse moment of torsion and moment of flexure power.
The drill collar of the stress dispersion type drilling machine comprises a drill collar body, wherein a male joint and a female joint are integrally formed at two ends of the drill collar body; an internal thread is arranged at the female joint; the male connector is provided with an external thread screwed with the male connector; the drill collar body is improved, a long clamping column and a short clamping column which are opposite to each other are arranged outside the connection part of the drill collar body, a limiting cylinder is arranged outside the long clamping column and the short clamping column, and torque and bending moment force can be transmitted to the whole drill collar body by utilizing the limiting cylinder and the clamping column; thereby prolonging the service life of the drill collar; the method comprises the following specific steps: one end of the drill collar body, which is close to the male connector, is provided with a long clamping column; one end of the drill collar body, which is close to the female joint, is provided with a short clamping column; the peripheries of the long clamping connection column and the short clamping connection column are opposite to each other and are integrally made into a straight edge; a limiting cylinder and a clamping cylinder piece are clamped between the long clamping column and the short clamping column; an upper pressure groove is formed in the upper part of the inner side of the limiting cylinder; a straight groove embedded with the straight edge is formed in the inner side of the limiting cylinder at the lower part of the upper pressure groove; the axial length of the limiting cylinder is smaller than that of the long clamping column; and a gasket body is arranged in the upper pressure groove.
Furthermore, the clamping cylinder part is an inverted convex cavity column, and a straight groove embedded with the straight edge is formed in the clamping cylinder part.
Furthermore, the gasket body is a plurality of open gaskets arranged in the pressure groove; and the top of the open gasket is provided with a limiting body.
Furthermore, the limiting body is a limiting clamp and/or two integrally welded semicircular pressing sheets.
Compared with the prior art, the stress dispersion type drill collar of the utility model adopts the limiting cylinder to seal the connection position of the male head and the female head, and utilizes the limiting cylinder and the clamping column to transmit torque and bending moment force to the whole drill collar body; thereby prolonging the service life of the drill collar.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Detailed Description
Example 1:
the stress dispersion type drill collar of the drilling machine as shown in FIG. 1 comprises a drill collar body, wherein a male joint and a female joint are integrally formed at two ends of the drill collar body; an internal thread is arranged at the female joint; the male connector is provided with an external thread screwed with the male connector; the drill collar body is improved, a long clamping column and a short clamping column which are opposite to each other are arranged outside the connection part of the drill collar body, a limiting cylinder is arranged outside the long clamping column and the short clamping column, and torque and bending moment force can be transmitted to the whole drill collar body by utilizing the limiting cylinder and the clamping column; thereby prolonging the service life of the drill collar; the method comprises the following specific steps: one end of the drill collar body 1, which is close to the male connector, is provided with a long clamping column 2; one end of the drill collar body 1, which is close to the female joint, is provided with a short clamping column 3; the peripheries of the long clamping column 2 and the short clamping column 3 are opposite to each other and are integrally made into a straight edge 4; a limiting cylinder 5 and a clamping cylinder piece 6 are clamped between the long clamping column 2 and the short clamping column 3; an upper pressure groove 7 is formed in the upper part of the inner side of the limiting cylinder 5; a straight groove 8 embedded with the straight edge is formed in the inner side of the limiting cylinder 5 at the lower part of the upper pressure groove 7; the axial length of the limiting cylinder 5 is smaller than that of the long clamping column 2; and a gasket body 9 is arranged in the upper pressure groove 7.
The clamping cylinder piece 6 is an inverted convex cavity column, and a straight groove 8 embedded with the straight edge is formed in the clamping cylinder piece. The gasket body 9 is a plurality of open gaskets 91 arranged in the pressure groove; the top of the open gasket 91 is provided with a limiting body 92. The limiting body 92 is a limiting hoop and/or two integrally welded semicircular pressing sheets.
When the drill collar is assembled, the limiting cylinder and the clamping cylinder piece are clamped to the long clamping column, the clamping cylinder piece is clamped to the upper pressing groove, then the male joint and the female joint of the drill collar body are screwed, and after screwing, the long clamping column and the short clamping column are butted; and the bottom of the limiting cylinder slides downwards to the short clamping connection column, the clamping cylinder piece is pulled out from the upper pressure groove, then the gasket body is clamped into the upper pressure groove from the gap formed by the upper pressure groove and the clamping cylinder piece in sequence, and when the gasket body is clamped to the uppermost layer, the two half circular pressing sheets are welded in a welding mode, so that the whole gasket body is pressed tightly.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (4)
1. A stress dispersion type drill collar for a drilling machine comprises a drill collar body, wherein a male joint and a female joint are integrally formed at two ends of the drill collar body; an internal thread is arranged at the female joint; the male connector is provided with an external thread screwed with the male connector; the method is characterized in that: one end of the drill collar body, which is close to the male connector, is provided with a long clamping column; one end of the drill collar body, which is close to the female joint, is provided with a short clamping column; the peripheries of the long clamping connection column and the short clamping connection column are opposite to each other and are integrally made into a straight edge; a limiting cylinder and a clamping cylinder piece are clamped between the long clamping column and the short clamping column; an upper pressure groove is formed in the upper part of the inner side of the limiting cylinder; a straight groove embedded with the straight edge is formed in the inner side of the limiting cylinder at the lower part of the upper pressure groove; the axial length of the limiting cylinder is smaller than that of the long clamping column; and a gasket body is arranged in the upper pressure groove.
2. The stress-dispersive drill collar of claim 1, wherein: the clamping cylinder piece is an inverted convex cavity column, and a straight groove embedded with the straight edge is formed in the clamping cylinder piece.
3. The stress-dispersive drill collar of claim 1, wherein: the gasket body is a plurality of open gaskets arranged in the pressure groove; and the top of the open gasket is provided with a limiting body.
4. The stress-dispersive drill collar of claim 3, wherein: the limiting body is a limiting clamp and/or two integrally welded semicircular pressing sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022427890.8U CN214303726U (en) | 2020-10-28 | 2020-10-28 | Stress dispersion type drill collar of drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022427890.8U CN214303726U (en) | 2020-10-28 | 2020-10-28 | Stress dispersion type drill collar of drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214303726U true CN214303726U (en) | 2021-09-28 |
Family
ID=77840803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022427890.8U Active CN214303726U (en) | 2020-10-28 | 2020-10-28 | Stress dispersion type drill collar of drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214303726U (en) |
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2020
- 2020-10-28 CN CN202022427890.8U patent/CN214303726U/en active Active
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