Near-bit signal emission assembly

Abstract

The utility model discloses a near-bit signal transmitting assembly which comprises a drill collar body. The main control circuit board is arranged in the drill collar main body; the gamma probe is arranged in the drill collar main body and is electrically connected with the main control circuit board; the azimuth probe is arranged in the drill collar main body and is electrically connected with the main control circuit board; the tuning circuit board is arranged in the drill collar main body and is electrically connected with the main control circuit board; the wireless signal transmitting coil is arranged at one end, close to the drill bit, in the drill collar main body and is electrically connected with the tuning circuit board; and the battery pack is arranged in the drill collar main body and is electrically connected with the main control circuit board. According to the assembly, the monitoring sensor is arranged on the drill collar main body, so that accurate monitoring of drilling information is realized, and the drilling precision is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling, in particular to a near-drill-bit signal transmitting assembly. Background Art

[0002] During the drilling process, it is necessary to monitor the drilling information of the drill bit at all times. The closer the distance between the monitoring sensor and the drill bit is, the more accurate the monitoring information is. Since the sensor cannot be directly set on the drill bit, a near-drill bit signal transmitting assembly is designed and connected to the drill bit to achieve accurate monitoring of the drilling information. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a near-drill-bit signal transmitting assembly, in which a monitoring sensor is configured on a drill collar body, thereby achieving accurate monitoring of drilling information and ensuring drilling accuracy.

[0004] The utility model provides a near-drill-bit signal transmitting assembly, comprising:

[0005] Drill collar body;

[0006] A main control circuit board is arranged in the drill collar body;

[0007] A gamma probe is disposed in the drill collar body and is electrically connected to the main control circuit board;

[0008] An azimuth probe, disposed in the drill collar body and electrically connected to the main control circuit board;

[0009] A tuning circuit board is disposed in the drill collar body and is electrically connected to the main control circuit board;

[0010] A wireless signal transmitting coil is arranged at one end of the drill collar body close to the drill bit and is electrically connected to the tuning circuit board;

[0011] A battery pack is arranged in the drill collar body and is electrically connected to the main control circuit board.

[0012] Furthermore, a first mounting groove is provided on the outer wall of the drill shank body, the main control circuit board and the tuning circuit board are fixedly arranged in the first mounting groove, the notch of the first mounting groove is provided with a first cover plate embedded in the drill shank body, the first cover plate is fixedly connected to the drill shank body by screws, and a first sealing ring is provided between the first cover plate and the first mounting groove.

[0013] Furthermore, the outer wall of the drill shank body is provided with second mounting grooves on both sides of the first mounting groove, and the battery pack is arranged in each of the two second mounting grooves. The groove opening of the second mounting groove is provided with a second cover plate embedded in the drill shank body, and the second cover plate is fixedly connected to the drill shank body by screws, and a second sealing ring is arranged between the second cover plate and the second mounting groove.

[0014] Furthermore, a third mounting groove and a fourth mounting groove are formed on a side of the outer wall of the drill collar body away from the first mounting groove and between the two second mounting grooves;

[0015] The gamma probe is fixedly arranged in the third mounting groove, the notch of the third mounting groove is provided with a third cover plate embedded in the drill collar body, the third cover plate is fixedly connected to the drill collar body by screws, and a third sealing ring is arranged between the third cover plate and the third mounting groove;

[0016] The azimuth probe is fixedly arranged in the fourth mounting groove, the notch of the fourth mounting groove is provided with a fourth cover plate embedded in the drill collar body, the fourth cover plate is fixedly connected to the drill collar body by screws, and a fourth sealing ring is arranged between the fourth cover plate and the fourth mounting groove.

[0017] Furthermore, a ring groove is provided at one end of the drill shank body close to the drill bit, and the wireless signal transmitting coil is fixedly arranged in the ring groove. The notch of the ring groove is circumferentially provided with two coil covers embedded in the drill shank body. The coil covers are semi-annular and fixedly connected to the drill shank body by screws. A fifth sealing ring is arranged between the coil cover and the ring groove.

[0018] Furthermore, a positioning plate is integrally provided on one side of the coil cover, a positioning groove is provided on one side of the annular groove opening corresponding to the positioning plate, and the positioning plate is embedded in the corresponding positioning groove.

[0019] Furthermore, a memory electrically connected to the main control circuit board is provided in the drill shank body, a screw hole is opened on one side of the drill shank body, a data transmission connector is fixedly provided in the screw hole, the data transmission connector is electrically connected to the main control circuit board, and a sealing nut is threadedly connected to the hole mouth of the screw hole.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The assembly of the utility model includes a drill collar body, a gamma probe, an azimuth probe and a wireless signal transmitting coil; one end of the drill collar body is connected to the drill bit, and the other end is connected to the screw, and the screw drives the drill collar body and the drill bit to rotate. The gamma probe and the azimuth probe are installed in the drill collar body to obtain well inclination information and azimuth information, and send them through the wireless signal transmitting coil. The present application configures the monitoring sensor on the drill collar body, realizes accurate monitoring of drilling information, and ensures the accuracy of drilling.

[0022] It should be understood that the contents described in the utility model summary are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 It is a structural schematic diagram of the near-drill-bit signal transmitting assembly;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the near-drill-bit signal transmitting assembly;

[0026] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0027] Numbers in the figure: 1, drill collar body; 2, main control circuit board; 3, gamma probe; 4, azimuth probe; 5, tuning circuit board; 6, wireless signal transmitting coil; 7, battery pack; 8, data transmission connector;

[0028] 11. Screw hole;

[0029] 21. first mounting groove; 22. first cover plate; 23. first sealing ring;

[0030] 31. third mounting groove; 32. third cover plate; 33. third sealing ring;

[0031] 41. fourth mounting groove; 42. fourth cover plate; 43. fourth sealing ring;

[0032] 61. annular groove; 62. coil cover; 63. positioning plate; 64. positioning groove;

[0033] 71. Second mounting groove; 72. Second cover plate; 73. Second sealing ring. DETAILED DESCRIPTION

[0034] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] Please refer to Figure 1 to Figure 3 The embodiment of the utility model provides a near-drill-bit signal transmitting assembly, comprising:

[0037] Drill collar body 1;

[0038] A main control circuit board 2 is arranged in the drill collar body 1;

[0039] The gamma probe 3 is arranged in the drill collar body 1 and is electrically connected to the main control circuit board 2;

[0040] The azimuth probe 4 is arranged in the drill collar body 1 and is electrically connected to the main control circuit board 2;

[0041] The tuning circuit board 5 is arranged in the drill collar body 1 and is electrically connected to the main control circuit board 2;

[0042] The wireless signal transmitting coil 6 is arranged at one end of the drill collar body 1 close to the drill bit and is electrically connected to the tuning circuit board 5;

[0043] The battery pack 7 is disposed in the drill collar body 1 and is electrically connected to the main control circuit board 2 .

[0044] In this embodiment, the drill bit is fixedly connected to one end of the drill collar body 1, and the other end of the drill collar body 1 is connected to the screw. The end of the screw away from the drill collar body 1 is connected to a wireless signal receiving short section, and the wireless signal receiving short section is connected to the monitoring equipment on the well through a cable. Since the screw part rotates at a high speed, it is impossible to set a cable in this section. The present application adopts wireless transmission to realize information transmission across the screw, and configures the gamma probe 3 and the azimuth probe 4 in the drill collar body 1 closest to the drill bit to obtain the well inclination information and azimuth information. After adjusting the resonant frequency through the tuning circuit board 5, it is sent through the wireless signal transmitting coil 6, thereby realizing accurate monitoring of drilling information and ensuring the accuracy of drilling.

[0045] In a preferred embodiment, if Figure 2 and Figure 3As shown, a first mounting groove 21 is provided on the outer wall of the drill collar body 1, the main control circuit board 2 and the tuning circuit board 5 are fixedly arranged in the first mounting groove 22, and a first cover plate 22 embedded in the drill collar body 1 is provided at the notch of the first mounting groove 21, and the first cover plate 22 is fixedly connected to the drill collar body 1 by screws, and a first sealing ring 23 is provided between the first cover plate 22 and the first mounting groove 21, so that the main control circuit board 2 and the tuning circuit board 5 are easy to install and have a good sealing effect.

[0046] In a preferred embodiment, if Figure 1 and Figure 3 As shown, the outer wall of the drill collar body 1 is provided with second mounting grooves 71 on both sides of the first mounting groove 21, and the two second mounting grooves 71 are each provided with a battery pack 7, and the notch of the second mounting groove 71 is provided with a second cover plate 72 embedded in the drill collar body 1, and the second cover plate 72 is fixedly connected to the drill collar body 1 by screws, and a second sealing ring 73 is provided between the second cover plate 72 and the second mounting groove 71, so that the battery pack 7 is easy to install and has a good sealing effect.

[0047] In a preferred embodiment, if Figure 3 As shown, a third mounting groove 31 and a fourth mounting groove 41 are formed on the outer wall of the drill collar body 1 at a side away from the first mounting groove 21 and between the two second mounting grooves 71;

[0048] The gamma probe 3 is fixedly arranged in the third mounting groove 31. The notch of the third mounting groove 31 is provided with a third cover plate 32 embedded in the drill collar body 1. The third cover plate 32 is fixedly connected to the drill collar body 1 by screws. A third sealing ring 33 is arranged between the third cover plate 32 and the third mounting groove 31. The gamma probe 3 is easy to install and has a good sealing effect.

[0049] The azimuth probe 4 is fixedly arranged in the fourth mounting groove 41. The groove of the fourth mounting groove 41 is provided with a fourth cover plate 42 embedded in the drill collar body 1. The fourth cover plate 42 is fixedly connected to the drill collar body 1 by screws. A fourth sealing ring 43 is arranged between the fourth cover plate 42 and the fourth mounting groove 41. The azimuth probe 4 is easy to install and has a good sealing effect.

[0050] In a preferred embodiment, if Figure 1 and Figure 3 As shown, a ring groove 61 is provided at one end of the drill collar body 1 near the drill bit, and the wireless signal transmitting coil 6 is fixedly arranged in the ring groove 61. The notch of the ring groove 61 is circumferentially provided with two coil covers 62 embedded in the drill collar body 1. The coil cover 62 is semi-annular and fixedly connected to the drill collar body 1 by screws. A fifth sealing ring is provided between the coil cover 62 and the ring groove 61. The wireless signal transmitting coil 6 is easy to install and has a good sealing effect.

[0051] In a preferred embodiment, if Figure 1As shown, a positioning plate 63 is integrally provided on one side of the coil cover 62 , and a positioning groove 64 is provided on one side of the notch of the annular groove 61 corresponding to the positioning plate 63 , and the positioning plate 63 is embedded in the corresponding positioning groove 64 , ensuring accurate installation of the coil cover 62 .

[0052] In a preferred embodiment, if Figure 1 As shown, a memory electrically connected to the main control circuit board 2 is provided in the drill collar body 1, a screw hole 11 is opened on one side of the drill collar body 1, a data transmission connector 8 is fixedly provided in the screw hole 11, the data transmission connector 8 is electrically connected to the main control circuit board 2, and a sealing nut is threadedly connected to the hole mouth of the screw hole 11.

[0053] In this embodiment, the information obtained by the gamma probe 3 and the azimuth probe 4 is stored in the memory. After drilling is completed, the sealing nut is removed, the data transmission connector 8 is connected to the computer through the data item, and the monitoring information is transmitted to the computer.

[0054] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A near-drill-bit signal transmitting assembly, characterized in that: include: Drill collar body (1); A main control circuit board (2) is arranged in the drill collar body (1); A gamma probe (3) is arranged in the drill collar body (1) and is electrically connected to the main control circuit board (2); An azimuth probe (4) is arranged in the drill collar body (1) and is electrically connected to the main control circuit board (2); A tuning circuit board (5) is arranged in the drill collar body and is electrically connected to the main control circuit board (2); A wireless signal transmitting coil (6) is arranged at one end of the drill collar body (1) close to the drill bit and is electrically connected to the tuning circuit board (5); A battery pack (7) is arranged in the drill collar body (1) and is electrically connected to the main control circuit board (2).

2. The near-drill-bit signal transmitting assembly according to claim 1, characterized in that: The outer wall of the drill collar body (1) is provided with a first mounting groove (21), the main control circuit board (2) and the tuning circuit board (5) are fixedly arranged in the first mounting groove (21), the notch of the first mounting groove (21) is provided with a first cover plate (22) embedded in the drill collar body (1), the first cover plate (22) is fixedly connected to the drill collar body (1) by screws, and a first sealing ring (23) is provided between the first cover plate (22) and the first mounting groove (21).

3. The near-drill-bit signal transmitting assembly according to claim 2, characterized in that: The outer wall of the drill collar body (1) is provided with second mounting grooves (71) on both sides of the first mounting groove (21), and the battery pack (7) is arranged in each of the two second mounting grooves (71). The notch of the second mounting groove (71) is provided with a second cover plate (72) embedded in the drill collar body (1), and the second cover plate (72) is fixedly connected to the drill collar body (1) by screws, and a second sealing ring (73) is arranged between the second cover plate (72) and the second mounting groove (71).

4. The near-drill-bit signal transmitting assembly according to claim 3, characterized in that: A third mounting groove (31) and a fourth mounting groove (41) are formed on a side of the outer wall of the drill collar body (1) away from the first mounting groove (21) and between the two second mounting grooves (71); The gamma probe (3) is fixedly arranged in the third mounting groove (31); the notch of the third mounting groove (31) is provided with a third cover plate (32) embedded in the drill collar body (1); the third cover plate (32) is fixedly connected to the drill collar body (1) by screws; a third sealing ring (33) is arranged between the third cover plate (32) and the third mounting groove (31); The azimuth probe (4) is fixedly arranged in the fourth mounting groove (41); the notch of the fourth mounting groove (41) is provided with a fourth cover plate (42) embedded in the drill collar body (1); the fourth cover plate (42) is fixedly connected to the drill collar body (1) by screws; and a fourth sealing ring (43) is arranged between the fourth cover plate (42) and the fourth mounting groove (41).

5. The near-drill-bit signal transmitting assembly according to claim 1, characterized in that: The drill collar body (1) is provided with an annular groove (61) at one end close to the drill bit, and the wireless signal transmitting coil (6) is fixedly arranged in the annular groove (61). The notch of the annular groove (61) is provided with two coil covers (62) embedded in the drill collar body (1) along the circumferential direction. The coil covers (62) are semi-annular in shape and are fixedly connected to the drill collar body (1) by screws. A fifth sealing ring is provided between the coil cover (62) and the annular groove (61).

6. The near-drill-bit signal transmitting assembly according to claim 5, characterized in that: A positioning plate (63) is integrally provided on one side of the coil cover (62), a positioning groove (64) is provided on one side of the notch of the annular groove (61) corresponding to the positioning plate (63), and the positioning plate (63) is embedded in the corresponding positioning groove (64).

7. The near-drill-bit signal transmitting assembly according to claim 1, characterized in that: A memory device electrically connected to the main control circuit board (2) is arranged in the drill collar body (1); a screw hole (11) is provided on one side of the drill collar body (1); a data transmission connector (8) is fixedly arranged in the screw hole (11); the data transmission connector (8) is electrically connected to the main control circuit board (2); and a sealing nut is threadedly connected to the orifice of the screw hole (11).

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