A drill collar assembly and a drilling apparatus

Abstract

The utility model relates to the technical field of well drilling, and specifically discloses a drill collar assembly and a well drilling equipment, the drill collar assembly includes the collar rod, circuit assembly, end electrically conductive part, sleeve and sealing element, and the outer peripheral wall of collar rod is provided with the accommodation groove, and the circuit assembly is fixedly arranged in the accommodation groove, and the end electrically conductive part is arranged at the end of collar rod, and the electrically conductive part of external butt joint instrument is electrically connected with circuit assembly through end electrically conductive part, the sleeve is sleeved on the collar rod and covers on the accommodation groove, and the sealing element is arranged between the collar rod and the sleeve and is used for plugging the gap between the collar rod and the sleeve, the well drilling equipment includes the drill collar assembly described above. The drill collar assembly provided by the utility model is convenient for disassembling and assembling the circuit assembly and other components, has simple structure, and effectively improves the sealing performance of the drill collar assembly and the working reliability of the well drilling equipment.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, and in particular to a drill collar assembly and drilling equipment. Background Technology

[0002] In existing drilling equipment, the drill collar is a core component, and its internal structure typically integrates a circuit assembly. This circuit assembly provides power to key electrical components such as generators and pulse generators via electrical connections, and integrates rectifier circuits, power supply circuits, and control circuit modules, forming the central control system for the reliable operation of the drill collar. However, existing technology faces significant challenges: due to the complex structure and limited space of the drill collar, the installation and disassembly of the circuit assembly is extremely cumbersome and requires stringent operational precision. Simultaneously, the drilling environment is characterized by high-intensity vibration, frequent displacement, and complex stress alternation, which can easily lead to reliability issues such as loose connections and component failures in the circuit assembly, as well as the potential risk of short circuits caused by mud seepage. These factors collectively restrict the stability of the circuit assembly under harsh operating conditions, thereby affecting the overall operating efficiency and safety of the drilling equipment. Utility Model Content

[0003] The purpose of this utility model is to provide a drill collar assembly that facilitates the disassembly and assembly of components such as the circuit assembly, has a simple structure, reliable performance, and is easy to inspect and maintain.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A drill collar assembly, comprising:

[0006] A bar, wherein a receiving groove is formed on the outer peripheral wall of the bar;

[0007] The circuit assembly is fixedly disposed within the receiving slot;

[0008] An end conductive element is provided at the end of the collar, and the conductive components of the external docking instrument are electrically connected to the circuit assembly through the end conductive element;

[0009] A sleeve, which is fitted onto the collar and covers the receiving groove;

[0010] A sealing element is disposed between the collar rod and the sleeve to seal the gap between the collar rod and the sleeve.

[0011] Preferably, the end conductive component includes a conductive slip ring, and a mounting ring groove is provided at one end of the collar rod where the external docking instrument is mounted. The conductive slip ring is disposed in the mounting ring groove and is used to contact and maintain an electrical connection with the conductive components of the external docking instrument.

[0012] Preferably, the conductive slip ring has a wavy friction portion on the side facing the bottom of the mounting ring groove. The friction portion is used to abut against the bottom of the mounting ring groove to generate friction and prevent the conductive slip ring from rotating relative to the mounting ring groove.

[0013] Preferably, the conductive slip ring is provided with conductive terminals, which are electrically connected to the circuit assembly via connecting wires. The collar is provided with a wiring hole communicating with the mounting ring groove, and the connecting wires pass through the wiring hole.

[0014] Preferably, the bar includes a first segment, a second segment, and a third segment connected in sequence, the end conductive element is disposed at the end of the third segment, the receiving groove includes a first receiving groove and a second receiving groove, the first receiving groove is disposed in the first segment, the second receiving groove is disposed in the second segment, the circuit assembly includes a control circuit board and a rectifier circuit board, the control circuit board is correspondingly disposed in the first receiving groove, the rectifier circuit board is correspondingly disposed in the second receiving groove, and the sleeve cover is disposed on the first receiving groove and the second receiving groove.

[0015] Preferably, there are multiple control circuit boards and rectifier circuit boards. The first receiving slot is arranged in a one-to-one correspondence with the control circuit board, and the second receiving slot is arranged in a one-to-one correspondence with the rectifier circuit board. The first receiving slots are distributed at intervals along the circumference of the first rod segment, and the second receiving slots are distributed at intervals along the circumference of the second rod segment.

[0016] Preferably, the third rod segment protrudes and is provided with an abutment portion. The diameters of the first rod segment, the second rod segment, and the third rod segment increase sequentially. The sleeve includes a first cylindrical portion, a second cylindrical portion, and a third cylindrical portion arranged sequentially. The inner diameters of the first cylindrical portion, the second cylindrical portion, and the third cylindrical portion increase sequentially. The inner peripheral wall of the first cylindrical portion abuts against the outer peripheral wall of the first rod segment. The inner peripheral wall of the second cylindrical portion abuts against the outer peripheral wall of the second rod segment. The inner peripheral wall of the third cylindrical portion abuts against the outer peripheral wall of the third rod segment. The abutment portion abuts against one end of the third cylindrical portion facing away from the second cylindrical portion.

[0017] Preferably, the first pole segment and / or the second pole segment are provided with a cable tray for the connection harness to pass through.

[0018] Preferably, the sealing element is a sealing ring, and a groove is provided on the outer peripheral wall of the bar or the inner peripheral wall of the sleeve, and the sealing ring is disposed in the groove.

[0019] This utility model also provides a drilling device, which includes the above-mentioned drill collar assembly, facilitating the disassembly and assembly of components such as the circuit assembly, with a simple structure, and effectively improving its sealing performance and operational reliability.

[0020] A drilling device includes a drill collar assembly as described in any of the preceding claims, and further includes a generator and a pulser disposed within the collar rod, wherein the generator and the pulser are both electrically connected to the circuit assembly.

[0021] Beneficial effects:

[0022] The drill collar assembly provided by this utility model features a receiving groove on the outer peripheral wall of the collar rod, within which the circuit assembly is fixedly housed. This design is simple in structure, facilitating the installation and disassembly of the collar rod assembly and simplifying maintenance. An end conductive element is provided at the end of the collar rod to enable electrical connection between external docking instruments and the circuit assembly. A sleeve is fitted over the collar rod to cover the receiving groove, effectively shielding and protecting the circuit assembly within the collar rod, preventing it from detaching and ensuring reliable and stable circuit assembly placement within the receiving groove. Furthermore, a sealing element is provided between the collar rod and the sleeve to effectively seal the gap between them, improving overall sealing performance, preventing mud from entering the circuit assembly area, and ensuring reliable and stable operation of the collar rod assembly.

[0023] The drilling equipment provided by this utility model includes the aforementioned drill collar assembly. It has a simple structure, facilitates the disassembly and assembly of components such as the circuit assembly, and effectively improves the sealing performance of the drill collar assembly and the operational reliability of the drilling equipment. Attached Figure Description

[0024] Figure 1 A schematic diagram of the drilling equipment provided by this utility model;

[0025] Figure 2 A cross-sectional schematic diagram of the drilling equipment provided by this utility model;

[0026] Figure 3 A partial structural cross-sectional view of the drill collar assembly provided by this utility model;

[0027] Figure 4 A schematic diagram of the end of the collar provided by this utility model;

[0028] Figure 5 A schematic diagram of the conductive slip ring provided by this utility model from one perspective;

[0029] Figure 6 A schematic diagram of the conductive slip ring provided by this utility model from another perspective;

[0030] Figure 7 A structural schematic diagram of the collar section provided by this utility model from one perspective;

[0031] Figure 8 A structural schematic diagram of the collar section provided by this utility model from another perspective;

[0032] Figure 9 A cross-sectional schematic diagram of the sleeve provided by this utility model.

[0033] In the picture:

[0034] 1. Collar; 101. Mounting ring groove; 102. Cable routing hole; 103. Cable routing groove; 104. Embedded groove; 11. First rod segment; 111. First receiving groove; 12. Second rod segment; 121. Second receiving groove; 13. Third rod segment; 131. Abutment part;

[0035] 2. Circuit assembly; 21. Control circuit board; 22. Rectifier circuit board;

[0036] 3. End conductive component; 31. Conductive slip ring; 32. Friction part; 33. Conductive terminal;

[0037] 4. Sleeve; 41. First cylindrical section; 42. Second cylindrical section; 43. Third cylindrical section; 44. Spacer ring;

[0038] 5. Sealing components;

[0039] 6. Generator;

[0040] 7. Pulse generator. Detailed Implementation

[0041] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0045] This embodiment provides a drilling equipment, referring to... Figures 1 to 9 As shown, the drilling equipment includes a generator 6 and a pulse generator 7, and also includes a drill collar assembly. The drill collar assembly includes a collar rod 1, a circuit assembly 2, an end conductive element 3, a sleeve 4, and a sealing element 5. The collar rod 1 has a receiving groove on its outer peripheral wall; the circuit assembly 2 is fixedly installed in the receiving groove; the end conductive element 3 is located at the end of the collar rod 1, and the conductive components of external docking instruments are electrically connected to the circuit assembly 2 through the end conductive element 3; the sleeve 4 is fitted onto the collar rod 1 and covers the receiving groove; the sealing element 5 is located between the collar rod 1 and the sleeve 4 to seal the gap between them. The generator 6 and the pulse generator 7 are located inside the collar rod 1, and both are electrically connected to the circuit assembly 2.

[0046] In this embodiment, a receiving groove is formed on the outer peripheral wall of the chamfer 1, and the circuit assembly 2 is fixedly installed in the receiving groove. The structure is simple, facilitating the installation and disassembly of the chamfer 1 assembly and making it easy to inspect and maintain. An end conductive element 3 is provided at the end of the chamfer 1 to realize the electrical connection between the external docking instrument and the circuit assembly 2. By correspondingly sleeved on the outside of the chamfer 1, the sleeve 4 can cover the receiving groove, thereby effectively shielding and protecting the circuit assembly 2 inside the chamfer 1, preventing the circuit assembly 2 from falling off, and ensuring that the circuit assembly 2 is reliably and stably arranged in the receiving groove. In addition, a sealing element 5 is provided between the chamfer 1 and the sleeve 4. The sealing element 5 can effectively seal the gap between the chamfer 1 and the sleeve 4, improving the overall sealing performance, preventing mud from entering the circuit assembly 2, and ensuring the reliable and stable operation of the chamfer 1 assembly. The drilling equipment provided in this embodiment includes the drill collar assembly described above. It has a simple structure, facilitates the disassembly and assembly of components such as the circuit assembly 2, and effectively improves the sealing performance of the drill collar assembly and the operational reliability of the drilling equipment.

[0047] In this embodiment, the end conductive component 3 includes a conductive slip ring 31. A mounting groove 101 is provided at one end of the collar 1 where the external docking instrument is mounted. The conductive slip ring 31 is disposed within the mounting groove 101 and is used to contact and maintain an electrical connection with the conductive components of the external docking instrument. Specifically, when the external docking instrument below the collar 1 rotates relative to the collar 1, the conductive slip ring 31 maintains contact with the conductive components of the external docking instrument, achieving electrical conductivity. Specifically, the conductive slip ring 31 has a gold-plated conductive end face, which extends out of the mounting groove 101.

[0048] For example, for an external docking instrument that docks with the collar 1, the docking end is also provided with the same conductive slip ring 31 as described above. Reliable electrical conduction is achieved by the conductive end faces of the two conductive slip rings 31 contacting each other.

[0049] In this embodiment, the conductive slip ring 31 has a wavy friction portion 32 on the side facing the bottom of the mounting ring groove 101. The friction portion 32 is used to abut against the bottom of the mounting ring groove 101 to generate friction and prevent the conductive slip ring 31 from rotating relative to the mounting ring groove 101. Specifically, by providing the friction portion 32, the friction portion 32 can increase the friction with the bottom of the mounting ring groove 101, thereby preventing the conductive slip ring 31 from rotating relative to the mounting ring groove 101 and ensuring that the conductive slip ring 31 is installed reliably and stably.

[0050] Furthermore, the conductive slip ring 31 is provided with conductive terminals 33, which are electrically connected to the circuit assembly 2 via connecting wires. The collar 1 has a wiring hole 102 communicating with the mounting ring groove 101, and the connecting wires pass through the wiring hole 102. Specifically, because the conductive slip ring 31 is provided with conductive terminals 33, the friction part 32 prevents the rotation of the conductive slip ring 31 and avoids misalignment of the conductive terminals 33, thus preventing excessive torque. Specifically, the wiring hole 102 includes a first hole and a second hole that are connected. The first hole is located on the side where the conductive slip ring 31 is located and is opened along the axial direction of the collar 1. The second hole is located on the side where the circuit assembly 2 is located and is inclined towards the direction close to the axis of the collar 1, and communicates with the receiving groove. For example, the diameter of the first hole is set to 4.9 mm, and the diameter of the second hole is set to 6 mm. The connecting wire harness of the circuit assembly 2 extends out from the connecting groove, passes through the second hole and the first hole, and is electrically connected to the conductive terminal 33 of the conductive slip ring 31.

[0051] In this embodiment, the lever 1 includes a first segment 11, a second segment 12, and a third segment 13 connected in sequence. An end conductive element 3 is disposed at the end of the third segment 13. The receiving groove includes a first receiving groove 111 and a second receiving groove. The first receiving groove 111 is disposed in the first segment 11, and the second receiving groove 121 is disposed in the second segment 12. The circuit assembly 2 includes a control circuit board 21 and a rectifier circuit board 22. The control circuit board 21 is correspondingly disposed in the first receiving groove 111, and the rectifier circuit board 22 is correspondingly disposed in the second receiving groove 121. A sleeve 4 covers the first receiving groove 111 and the second receiving groove 121. Specifically, the circuit assembly 2 is functionally divided into a control circuit board 21 and a rectifier circuit board 22. The first receiving groove 111 and the second receiving groove 121 are respectively used to install the control circuit board 21 and the rectifier circuit board 22, and the control circuit board 21 and the rectifier circuit board 22 are respectively mounted on the first segment 11 and the second segment 12.

[0052] Furthermore, multiple control circuit boards 21 and rectifier circuit boards 22 are provided. A first receiving slot 111 is provided one-to-one with a control circuit board 21, and a second receiving slot 121 is provided one-to-one with a rectifier circuit board 22. The first receiving slots 111 are distributed circumferentially along the first rod segment 11, and the second receiving slots 121 are distributed circumferentially along the second rod segment 12. For example, three control circuit boards 21 are provided: a main control circuit board, a pulse circuit board, and a power supply circuit board. Three first receiving slots 111 are distributed circumferentially along the first rod segment 11. Four rectifier circuit boards 22 are provided: a C-MB circuit board, a D-MC circuit board, an E-MA circuit board, and an F-MD circuit board. Four second receiving slots 121 are distributed circumferentially along the second rod segment 12.

[0053] Furthermore, the third rod segment 13 is provided with a protruding abutment portion 131. The diameters of the first rod segment 11, the second rod segment 12, and the third rod segment 13 are arranged in sequence. The sleeve 4 includes a first cylindrical portion 41, a second cylindrical portion 42, and a third cylindrical portion 43 arranged in sequence. The inner diameters of the first cylindrical portion 41, the second cylindrical portion 42, and the third cylindrical portion 43 are arranged in sequence. The inner peripheral wall of the first cylindrical portion 41 is used to abut against the outer peripheral wall of the first rod segment 11. The inner peripheral wall of the second cylindrical portion 42 is used to abut against the outer peripheral wall of the second rod segment 12. The inner peripheral wall of the third cylindrical portion 43 is used to abut against the outer peripheral wall of the third rod segment 13. The abutment portion 131 is used to abut against the end of the third cylindrical portion 43 that is opposite to the second cylindrical portion 42. Specifically, when the sleeve 4 is fitted into place relative to the bar 1, the inner circumferential wall of the first cylindrical portion 41 abuts against the outer circumferential wall of the first bar segment 11, the inner circumferential wall of the second cylindrical portion 42 abuts against the outer circumferential wall of the second bar segment 12, and the inner circumferential wall of the third cylindrical portion 43 abuts against the outer circumferential wall of the third bar segment 13. The abutting portion 131 abuts against the end of the third cylindrical portion 43 facing away from the second cylindrical portion 42. The diameters of the first bar segment 11, the second bar segment 12, and the third bar segment 13 increase sequentially, meaning the bar 1 is a multi-segment stepped structure. The inner diameters of the first cylindrical portion 41, the second cylindrical portion 42, and the third cylindrical portion 43 are correspondingly set to increase sequentially to fit the stepped bar segments 1. When installing the sleeve 4, one side of the third cylindrical portion 43 of the sleeve 4 passes sequentially through the first bar segment 11 and the second bar segment 12 before being fitted onto the third bar segment 13 and abutting against the abutting portion 131, facilitating installation. The abutting part 131 of the third rod section 13 abuts against the end of the third cylinder section 43 to realize the sleeve 4 sleeve positioning, further ensuring that the sleeve 4 is installed reliably and stably.

[0054] For example, a spacer ring 44 is also sleeved between the abutting portion 131 and the end of the third cylindrical portion 43 facing away from the second cylindrical portion 42. The spacer ring 44 is made of beryllium copper C17200, a material with relatively soft hardness. In addition, in order to facilitate the design of the tooling and disassembly sleeve 4, a groove is provided on the spacer ring 44. The groove is 4mm wide and 3mm deep.

[0055] It should be noted that the length and function of the collar 1 in this embodiment are not specifically limited. The collar 1 can be a general term for the collar 1 of both circuit drill collars and pulse drill collars, or it can specifically refer to the collar 1 of circuit drill collars. Therefore, when the collar 1 includes both circuit collar 1 and pulse drill collar 1, the aforementioned spacer ring 44 is also provided between the circuit collar 1 and the pulse drill collar 1.

[0056] For example, the diameter of the first segment 11 is 124.7 mm, the diameter of the second segment 12 is 127.7 mm, and the diameter of the third segment 13 is 129.85 mm.

[0057] For example, the sleeve 4 has an outer diameter of 160 mm, a wall thickness of 15.95 mm, and is provided with a 5° bevel diameter change.

[0058] Furthermore, both the first rod segment 11 and / or the second rod segment 12 are provided with wiring grooves 103 for the passage of connecting wire harnesses. By providing wiring grooves 103, reliable passage of connecting wire harnesses is facilitated, thereby achieving reliable electrical conduction between the end conductive element 3 and the seven circuit boards. Specifically, the wiring grooves 103 on the first rod segment 11 are formed along the axial direction of the first rod segment 11, and are located between two adjacent first receiving grooves 111. The wiring grooves 103 on the second rod segment 12 are formed along the axial direction of the second rod segment 12, and are located between two adjacent second receiving grooves 121.

[0059] Furthermore, the sealing element 5 is configured as a sealing ring, and a groove 104 is provided on the outer peripheral wall of the bar 1 or the inner peripheral wall of the sleeve 4, with the sealing ring disposed within the groove 104. Specifically, on the first rod portion, a plurality of grooves 104 are spaced apart on the side of the first receiving groove 111 opposite to the second receiving groove 121, and on the third rod portion, a plurality of grooves 104 are spaced apart on the side of the second receiving groove 121 opposite to the first receiving groove 111, with a sealing ring disposed within each groove 104. The sealing ring provides a reliable seal at both ends of the sleeve 4, thereby achieving reliable protection for the internal circuit assembly 2.

[0060] For example, in this embodiment, the first rod portion of the first receiving groove 111 on the side opposite to the second receiving groove 121 is provided with two slots 104 spaced apart, and the third rod portion of the second receiving groove 121 on the side opposite to the first receiving groove 111 is provided with two slots 104 spaced apart.

[0061] For example, the sealing ring is set as an O-ring, the compression of the sealing ring is designed to be 20.6%, and the pressure resistance is 140MPa.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A drill collar assembly, characterized in that, include: A bar (1) has a receiving groove on its outer peripheral wall; The circuit assembly (2) is fixedly disposed in the receiving groove; An end conductive element (3) is provided at the end of the bar (1), and the conductive components of the external docking instrument are electrically connected to the circuit assembly (2) through the end conductive element (3); Sleeve (4), the sleeve (4) is sleeved on the bar (1) and covers the receiving groove; A sealing element (5) is provided between the bar (1) and the sleeve (4) to seal the gap between the bar (1) and the sleeve (4).

2. The drill collar assembly according to claim 1, characterized in that, The end conductive component (3) includes a conductive slip ring (31). The end of the bar (1) where the external docking instrument is installed is provided with a mounting ring groove (101). The conductive slip ring (31) is located in the mounting ring groove (101). The conductive slip ring (31) is used to contact the conductive components of the external docking instrument and maintain an electrical connection.

3. The drill collar assembly according to claim 2, characterized in that, The conductive slip ring (31) has a wavy friction part (32) on one side facing the bottom of the mounting ring groove (101). The friction part (32) is used to abut against the bottom of the mounting ring groove (101) to generate friction and prevent the conductive slip ring (31) from rotating relative to the mounting ring groove (101).

4. The drill collar assembly according to claim 2, characterized in that, The conductive slip ring (31) is provided with a conductive terminal (33), which is electrically connected to the circuit assembly (2) through a connecting wire harness. The bar (1) is provided with a wiring hole (102) that communicates with the mounting ring groove (101), and the connecting wire harness passes through the wiring hole (102).

5. The drill collar assembly according to claim 1, characterized in that, The bar (1) includes a first rod segment (11), a second rod segment (12) and a third rod segment (13) connected in sequence. The end conductive element (3) is disposed at the end of the third rod segment (13). The receiving groove includes a first receiving groove (111) and a second receiving groove (121). The first receiving groove (111) is disposed in the first rod segment (11), and the second receiving groove (121) is disposed in the second rod segment (12). The circuit assembly (2) includes a control circuit board (21) and a rectifier circuit board (22). The control circuit board (21) is disposed in the first receiving groove (111), and the rectifier circuit board (22) is disposed in the second receiving groove (121). The sleeve (4) is disposed on the first receiving groove (111) and the second receiving groove (121).

6. The drill collar assembly according to claim 5, characterized in that, The number of control circuit boards (21) and rectifier circuit boards (22) are both multiple. The first receiving slot (111) is arranged in a one-to-one correspondence with the control circuit board (21), and the second receiving slot (121) is arranged in a one-to-one correspondence with the rectifier circuit board (22). The first receiving slot (111) is distributed circumferentially along the first rod segment (11), and the second receiving slot (121) is distributed circumferentially along the second rod segment (12).

7. The drill collar assembly according to claim 5, characterized in that, The third rod segment (13) is provided with a protruding abutment portion (131). The diameters of the first rod segment (11), the second rod segment (12), and the third rod segment (13) are arranged in sequence. The sleeve (4) includes a first cylindrical part (41), a second cylindrical part (42), and a third cylindrical part (43) arranged in sequence. The inner diameters of the first cylindrical part (41), the second cylindrical part (42), and the third cylindrical part (43) are arranged in sequence. The inner peripheral wall of the first cylindrical part (41) is used to abut against the outer peripheral wall of the first rod segment (11). The inner peripheral wall of the second cylindrical part (42) is used to abut against the outer peripheral wall of the second rod segment (12). The inner peripheral wall of the third cylindrical part (43) is used to abut against the outer peripheral wall of the third rod segment (13). The abutment portion (131) is used to abut against the end of the third cylindrical part (43) facing away from the second cylindrical part (42).

8. The drill collar assembly according to claim 7, characterized in that, The first pole segment (11) and / or the second pole segment (12) are provided with a cable tray (103) for the connection harness to pass through.

9. The drill collar assembly according to claim 1, characterized in that, The sealing element (5) is configured as a sealing ring, and a groove (104) is provided on the outer peripheral wall of the bar (1) or the inner peripheral wall of the sleeve (4), and the sealing ring is located in the groove (104).

10. A drilling equipment, characterized in that, The assembly includes the drill collar assembly as described in any one of claims 1-9, and further includes a generator (6) and a pulser (7) disposed within the collar rod (1), both of which are electrically connected to the circuit assembly (2).

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