A drill collar assembly and a drilling apparatus

Abstract

The utility model relates to the technical field of well drilling, and particularly discloses a drill collar assembly and a well drilling device, the drill collar assembly comprises a collar rod, a reading device and a cover plate, the collar rod is provided with a circuit assembly, a first recess is formed in the side wall of the collar rod, a containing hole is formed in the bottom of the first recess, the reading device is arranged in the containing hole, the reading device is electrically connected with the circuit assembly, the cover plate is arranged in the first recess and covers the reading device, the cover plate is fixedly connected with the bottom of the first recess through a fixing member, the side wall of the cover plate abuts against the corresponding groove wall of the first recess, and a sealing member is arranged between the bottom of the first recess and the cover plate; the well drilling device comprises the drill collar assembly. The drill collar assembly has a simple structure, the abutment of the side wall of the cover plate and the corresponding side groove wall of the first recess and the arrangement of the sealing member between the bottom of the first recess and the cover plate effectively ensure the sealing property, thereby reliably and effectively protecting the reading device arranged in the collar rod and ensuring the reliable and stable data reading of the well drilling device.

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, to facilitate real-time acquisition of downhole stored data, a data reading device is typically integrated inside the drill collar. This device transmits signals to the equipment's circuitry via electrical connections. However, the drilling environment is characterized by high-intensity vibration, frequent movement, and complex stress conditions. Such dynamic loads can easily lead to loosening of internal components, connection failures, or structural damage to the reading device, resulting in data reading interruptions or equipment malfunctions. While existing technologies provide basic protection for the reading device using conventional protective structures, they are insufficient to meet the long-term stability requirements under extreme operating conditions. Therefore, optimizing the drill collar structure to improve the reading device's vibration resistance, sealing performance, and overall reliability under dynamic loads has become a pressing technical challenge in this field. Utility Model Content

[0003] The purpose of this invention is to provide a drill collar assembly with a simple structure that can reliably and effectively protect the reading device installed inside the collar rod.

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

[0005] A drill collar assembly, comprising:

[0006] A bar, on which a circuit assembly is provided, and a first groove is formed on the side wall of the bar, and a receiving hole is formed at the bottom of the first groove;

[0007] A reading device is disposed within the receiving hole and is electrically connected to the circuit assembly;

[0008] A cover plate is disposed in the first settling tank and covers the reading device. The cover plate is fixedly connected to the bottom of the first settling tank by a fastener. The side wall of the cover plate abuts against the corresponding tank wall of the first settling tank. A sealing element is provided between the bottom of the first settling tank and the cover plate. The sealing element is used to seal the gap between the bottom of the first settling tank and the cover plate.

[0009] Preferably, the fastener includes a screw connector, which includes a screw head and a screw rod. The first end of the screw rod is connected to the screw head, and the outer circumference of the first end of the screw rod is a smooth surface. The outer circumference of the second end of the screw rod is provided with an external thread. The cover plate has a first through hole, and the bottom of the first recess has a second through hole. The second through hole includes a first hole portion and a second hole portion arranged in a stepped manner. The first end of the first hole portion is connected to the first recess, and the second end is connected to the second hole portion. The diameter of the first hole portion is larger than that of the second hole portion. The inner circumferential wall of the first hole portion is a smooth surface. Both the inner circumferential walls of the first through hole and the second hole portion are provided with internal threads that can be screwed into the external thread.

[0010] The screw head can abut against the cover plate, and the screw rod passes through the first through hole, and the first hole and the second hole are threadedly connected.

[0011] Preferably, the cover plate is provided with a second recessed groove, the bottom of the second recessed groove is connected to the first through hole, and the screw head is located in the second recessed groove.

[0012] Preferably, the screw connector, the first through hole, the second through hole, and the second countersunk groove are provided in multiple corresponding positions.

[0013] Preferably, the sealing element includes a sealing ring disposed between the bottom of the first settling tank and the cover plate.

[0014] Preferably, the end face of the cover plate facing the bottom of the first settling tank or the bottom of the first settling tank is provided with an annular groove, and the sealing ring is embedded in the annular groove.

[0015] Preferably, the side wall of the bar has a guide groove that communicates with the first settling trough. The bottom end face of the guide groove is inclined inward toward the side where the bottom of the first settling trough is located. The cover plate is provided with a guide head, and the guide head has a guide slope corresponding to the bottom of the guide groove.

[0016] Preferably, the top surface of the cover plate is located within the first settling trough.

[0017] Preferably, the collar has a through hole that communicates with the receiving hole, and the connecting wire harness of the reading device passes through the through hole and is electrically connected to the circuit assembly.

[0018] This utility model also provides a drilling equipment, which includes the above-mentioned drill collar assembly. It has a simple structure, effectively ensures sealing, and can reliably and effectively protect the reading device installed inside the collar rod, ensuring reliable and stable data reading of the drilling equipment.

[0019] A drilling apparatus comprising the drill collar assembly described in any of the preceding claims, and further comprising a generator and a pulser disposed within the collar rod.

[0020] Beneficial effects:

[0021] The drill collar assembly provided by this utility model has a first recessed groove on the side wall of the collar rod, and a receiving hole at the bottom of the first recessed groove. The reading device is disposed in the receiving hole and electrically connected to the circuit assembly. A cover plate is provided for the first recessed groove, and the cover plate is reliably fixed in the first recessed groove by a fastener. The cover plate covers the reading device, thereby effectively protecting the reading device. In addition, the side wall of the cover plate abuts against the corresponding groove wall of the first recessed groove, which can provide a reliable seal for the side wall of the cover plate. A sealing element is provided between the bottom of the first recessed groove and the cover plate, which can effectively seal the gap between the bottom of the first recessed groove and the cover plate, ensuring airtightness, and thus providing reliable and effective protection for the reading device installed in the collar rod.

[0022] The drilling equipment provided by this utility model includes the drill collar assembly described above. The seal between the cover plate and the first settling groove is reliable and stable, providing reliable and sufficient protection for the reading device installed inside the collar rod. Attached Figure Description

[0023] Figure 1 A schematic diagram of the drilling equipment provided by this utility model;

[0024] Figure 2 A cross-sectional schematic diagram of the drilling equipment provided by this utility model;

[0025] Figure 3 This utility model is for Figure 2 A magnified view of a portion of point A in the middle;

[0026] Figure 4 A schematic diagram of the collar rod at the cover plate position provided by this utility model;

[0027] Figure 5 This utility model Figure 4 A cross-sectional view along the B direction.

[0028] In the picture:

[0029] 1. Collar bar; 11. First recess; 111. Second through hole; 1111. First hole section; 1112. Second hole section; 12. Receiving hole; 13. Guide groove; 14. Wire hole;

[0030] 2. Reading device;

[0031] 3. Cover plate; 31. First perforation; 32. Second recess; 33. Annular groove; 34. Guide head; 341. Guide slope;

[0032] 4. Threaded connector; 41. Threaded head; 42. Threaded rod;

[0033] 5. Sealing components;

[0034] 6. Generator;

[0035] 7. Pulse generator. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] This embodiment provides a drill collar assembly. (Refer to...) Figures 1 to 5 As shown, the drill collar assembly includes a collar rod 1, a reading device 2, and a cover plate 3. The collar rod 1 is equipped with a circuit assembly. A first recess 11 is formed on the side wall of the collar rod 1, and a receiving hole 12 is formed at the bottom of the first recess 11. The reading device 2 is disposed within the receiving hole 12 and is electrically connected to the circuit assembly. The cover plate 3 is disposed within the first recess 11 and covers the reading device 2. The cover plate 3 is fixedly connected to the bottom of the first recess 11 by a fastener. The side wall of the cover plate 3 abuts against the corresponding wall of the first recess 11. A sealing element 5 is provided between the bottom of the first recess 11 and the cover plate 3 to seal the gap between the bottom of the first recess 11 and the cover plate 3.

[0041] In this embodiment, a first recessed groove 11 is formed on the side wall of the collar 1, and a receiving hole 12 is formed at the bottom of the first recessed groove 11. The reading device 2 is disposed in the receiving hole 12 and electrically connected to the circuit assembly. A cover plate 3 is provided on the first recessed groove 11, and the cover plate 3 is reliably fixed in the first recessed groove 11 by a fastener. The cover plate 3 covers the reading device 2, thereby effectively protecting the reading device 2. In addition, the side wall of the cover plate 3 abuts against the corresponding groove wall of the first recessed groove 11, which can provide a reliable seal for the side wall of the cover plate 3. A sealing element 5 is provided between the bottom of the first recessed groove 11 and the cover plate 3. The sealing element 5 can effectively seal the gap between the bottom of the first recessed groove 11 and the cover plate 3, ensuring airtightness, thereby providing reliable and effective protection for the reading device 2 installed in the collar 1.

[0042] In this embodiment, the fastener includes a screw connector 4, which includes a screw head 41 and a screw rod 42. The first end of the screw rod 42 is connected to the screw head 41. The outer periphery of the first end of the screw rod 42 is smooth. The outer periphery of the second end of the screw rod 42 is provided with external threads. The cover plate 3 has a first through hole 31. The bottom of the first recess 11 has a second through hole 111. The second through hole 111 includes a first hole portion 1111 and a second hole portion 1112 arranged in a stepped manner. The first end of the first hole portion 1111 is connected to the first recess 11, and the second end is connected to the second hole portion 1112. The diameter of the first hole portion 1111 is larger than that of the second hole portion 1112. The inner peripheral wall of the first hole portion 1111 is smooth. The inner peripheral walls of the first through hole 31 and the second hole portion 1112 are both provided with internal threads that can be screwed into the external threads. Specifically, when the screw connector 4 is installed in place, the screw head 41 can abut against the cover plate 3, and the screw 42 passes through the first through hole 31, the first hole portion 1111, and the second hole portion 1112 for threaded connection. Specifically, compared to ordinary bolts and other threaded components, the first end of the screw 42, i.e., the outer circumference of the end of the screw 42 near the screw head 41, is set as a smooth surface without external threads; external threads are only provided on the outer circumference of the second end of the screw 42. During the screwing-in process of the screw connector 4, the second end of the screw 42 is pre-fitted with the internal thread of the first through hole 31. After the second end of the screw 42 is fully screwed into the first through hole 31, the second end of the screw 42 passes through the first hole portion 1111 and then is threadedly connected to the second hole portion 1112. The purpose of this design is that if the second end of the screw 42 becomes loose relative to the second hole 1112 during long-term use of the drill collar assembly, the internal thread section of the first through hole 31 will limit the second hole 1112 to a certain extent, preventing the screw 4 from becoming loose relative to the cover plate 3 immediately. This facilitates inspection and maintenance and reduces the risk of losing the screw 4.

[0043] In this embodiment, the cover plate 3 is provided with a second recessed groove 32, the bottom of the second recessed groove 32 is connected to the first through hole 31, and the screw head 41 is located in the second recessed groove 32. By setting the second recessed groove 32, the screw head 41 of the screw connector 4 is completely sunk to the upper end surface of the cover plate 3, avoiding the screw connector 4 from being exposed, and playing a certain role in protecting the screw connector 4.

[0044] In this embodiment, multiple screw connectors 4, first through holes 31, second through holes 111, and second recesses 32 are provided in a one-to-one correspondence. For example, the cover plate 3 has a rectangular cross-section, and four first through holes 31 are provided, which are distributed at the four corners of the rectangular cross-section cover plate 3.

[0045] In this embodiment, the sealing element 5 includes a sealing ring disposed between the bottom of the first settling tank 11 and the cover plate 3. Specifically, the sealing ring is made of rubber, which has a certain elastic deformation capability, effectively sealing the gap between the bottom of the first settling tank 11 and the cover plate 3, ensuring airtightness.

[0046] Furthermore, an annular groove 33 is provided on the end face of the cover plate 3 facing the bottom of the first settling tank 11 or on the bottom of the first settling tank 11, and the sealing ring is embedded in the annular groove 33. The annular groove 33 provides reliable installation space for the sealing ring and also provides reliable and stable installation positioning for the sealing ring.

[0047] In this embodiment, the annular groove 33 is formed on the end face of the cover plate 3 facing the bottom of the first sink 11.

[0048] In this embodiment, the side wall of the lever 1 is provided with a guide groove 13 that communicates with the first sinker 11. The bottom end face of the guide groove 13 is inclined inward toward the side where the bottom of the first sinker 11 is located. The cover plate 3 is provided with a guide head 34, which is provided with a guide slope 341 corresponding to the bottom of the guide groove 13. Specifically, by providing a guide groove 13 with its bottom end face inclined inward toward the side where the bottom of the first sinker 11 is located, when the cover plate 3 is installed, even if the cover plate 3 and the first sinker 11 are not completely aligned, the guide slope 341 of the guide head 34 of the cover plate 3 and the bottom end face of the guide groove 13 can ultimately guide the cover plate 3 to a position directly opposite the first sinker 11, thereby achieving the installation and positioning of the cover plate 3 and improving installation efficiency.

[0049] In this embodiment, the top surface of the cover plate 3 is located within the first settling groove 11. This arrangement prevents the cover plate 3 from being exposed and provides a certain degree of protection for it.

[0050] In this embodiment, the collar 1 has a through hole 14 that communicates with the receiving hole 12. The connecting wire harness of the reading device 2 passes through the through hole 14 and is electrically connected to the circuit assembly. The through hole 14 provides reliable space for the connecting wire harness to pass through, thereby realizing an effective electrical connection between the reading device 2 and the circuit assembly.

[0051] This embodiment also provides a drilling equipment. The drilling equipment includes the drill collar assembly described above, and also includes a generator 6 and a pulser 7 disposed inside the collar 1. Specifically, the drilling equipment includes the drill collar assembly described above, which has a simple structure, effectively ensures sealing, and can reliably and effectively protect the reading device 2 installed inside the collar 1, ensuring reliable and stable data reading of the drilling equipment.

[0052] 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) is provided with a circuit assembly. A first groove (11) is provided on the side wall of the bar (1). A receiving hole (12) is provided at the bottom of the first groove (11). A reading device (2) is disposed in the receiving hole (12) and is electrically connected to the circuit assembly; A cover plate (3) is disposed in the first sink (11) and covers the reading device (2). The cover plate (3) is fixedly connected to the bottom of the first sink (11) by a fastener. The side wall of the cover plate (3) abuts against the corresponding wall of the first sink (11). A sealing element (5) is provided between the bottom of the first sink (11) and the cover plate (3). The sealing element (5) is used to seal the gap between the bottom of the first sink (11) and the cover plate (3).

2. The drill collar assembly according to claim 1, characterized in that, The fastener includes a screw connector (4), which includes a screw head (41) and a screw rod (42). The first end of the screw rod (42) is connected to the screw head (41). The outer periphery of the first end of the screw rod (42) is smooth, and the outer periphery of the second end of the screw rod (42) is provided with external threads. The cover plate (3) has a first through hole (31), and the bottom of the first recess (11) has a second through hole (111). The second through hole (111) includes a stepped arrangement. The first hole (1111) and the second hole (1112) are connected at the first end to the first recess (11) and at the second end to the second hole (1112). The diameter of the first hole (1111) is larger than that of the second hole (1112). The inner peripheral wall of the first hole (1111) is a smooth surface. The inner peripheral walls of the first through hole (31) and the second hole (1112) are both provided with internal threads that can be screwed into the external thread. The screw head (41) can abut against the cover plate (3), and the screw (42) passes through the first through hole (31), the first hole (1111) and the second hole (1112) are threadedly connected.

3. The drill collar assembly according to claim 2, characterized in that, The cover plate (3) is provided with a second sink groove (32), the bottom of the second sink groove (32) is connected to the first through hole (31), and the screw head (41) is located in the second sink groove (32).

4. The drill collar assembly according to claim 3, characterized in that, The screw connector (4), the first through hole (31), the second through hole (111), and the second recess (32) are provided in multiple corresponding positions.

5. The drill collar assembly according to claim 1, characterized in that, The sealing element (5) includes a sealing ring disposed between the bottom of the first sink (11) and the cover plate (3).

6. The drill collar assembly according to claim 5, characterized in that, The cover plate (3) has an annular groove (33) on the end face facing the bottom of the first sink (11) or on the bottom of the first sink (11), and the sealing ring is embedded in the annular groove (33).

7. The drill collar assembly according to claim 1, characterized in that, The side wall of the bar (1) is provided with a guide groove (13) that communicates with the first sinking trough (11). The bottom end face of the guide groove (13) is inclined inward toward the side where the bottom of the first sinking trough (11) is located. The cover plate (3) is provided with a guide head (34). The guide head (34) is provided with a guide slope (341) corresponding to the bottom of the guide groove (13).

8. The drill collar assembly according to claim 1, characterized in that, The top surface of the cover plate (3) is located inside the first sink (11).

9. The drill collar assembly according to claim 1, characterized in that, The bar (1) has a through hole (14) that is connected to the receiving hole (12), and the connecting wire harness of the reading device (2) passes through the through hole (14) and is electrically connected to the circuit assembly.

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

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