Near-bit circuit rapid on-off device and near-bit

Abstract

The utility model discloses a near-bit circuit rapid on-off device and a near-bit, and particularly relates to the technical field of offshore drilling equipment, the near-bit circuit rapid on-off device comprises a fixing piece and a circuit on-off device, the fixing piece can be installed in the near-bit in a sealed mode, and the circuit on-off device is fixedly installed in the fixing piece. A near-bit measuring circuit and an internal instrument circuit are connected in the circuit on-off device, and the circuit on-off device can control the near-bit measuring circuit and the internal instrument circuit to be connected or disconnected. The device has a simple structure, is convenient to install, can reduce the risk that the instrument is damaged during offshore installation, reduces the power consumption of the battery in non-operation time, and guarantees the operation time during formal construction.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore drilling equipment, in particular to a near-bit circuit quick on-off device and a near-bit Background Technique

[0002] The use of near-bit measurement-while-drilling can overcome the disadvantage of not being able to accurately measure the formation data information at the position of the bit in real time. During the operation process, the downhole actual geological characteristics are used to determine and control the wellbore trajectory, and the downhole drill string is accurately controlled to hit the target formation

[0003] The signal transmission of conventional near-bit instruments is divided into two types. One is wireless transmission to the receiving device, but the transmission distance is too short during deep-sea open-hole drilling and cannot meet the requirements. The other is wired transmission, with a hollow screw installed inside, and the instrument and the circuit are passed through the inside of the screw to complete the wired transmission. However, this connection method of threading the circuit through the screw is more complex in the assembly process and is prone to errors during offshore installation, resulting in instrument damage. Moreover, if it is assembled in advance, the battery power will be consumed all the time when not in operation, and the working time during formal operation cannot be guaranteed Summary of the Utility Model

[0004] The purpose of the utility model is to provide a near-bit circuit quick on-off device and a near-bit to solve the problems existing in the above-mentioned prior art, with a simple structure and convenient installation, which can reduce the risk of instrument damage during offshore installation, reduce the battery power consumption during non-operation time, and ensure the working time during formal construction

[0005] To achieve the above purpose, the utility model provides the following scheme:

[0006] The utility model provides a near-bit circuit quick on-off device, including a fixing part and a circuit on-off device. The fixing part can be hermetically installed in the near-bit, the circuit on-off device is fixedly installed in the fixing part, a near-bit measurement circuit and an internal instrument circuit are connected in the circuit on-off device, and the circuit on-off device can control the conduction or disconnection of the near-bit measurement circuit and the internal instrument circuit

[0007] Preferably, the circuit on-off device includes a connection socket and a connection plug. The connection socket is fixedly installed in the fixing part, and a near-bit measurement circuit and an internal instrument circuit are arranged in the connection socket. The connection plug is detachably connected to the connection socket. When the connection plug is connected to the connection socket in place, the near-bit measurement circuit and the internal instrument circuit will be conducted

[0008] Preferably, the fixing member includes an upper pressing plate and a lower base. The connection socket is fixedly connected to the lower base. An opening for the connection plug to enter and exit the connection socket is provided on the lower base. The upper pressing plate is detachably connected to the lower base and covers the opening.

[0009] The present utility model also provides a near-bit drill, which includes the near-bit drill circuit quick on-off device, a near-bit drill housing, and a gland. A groove is formed on the side wall of the near-bit drill housing. The near-bit drill circuit quick on-off device is arranged in the groove. The gland is detachably connected to the groove and covers the opening of the groove.

[0010] Preferably, a sealing member is further included. The sealing member is arranged in the groove and surrounds the outside of the near-bit drill circuit quick on-off device. The sealing member is used to seal the gap between the groove and the gland.

[0011] Preferably, the gland is connected to the groove by bolts.

[0012] Preferably, the sealing member is an O-ring seal.

[0013] The present utility model has achieved the following technical effects compared with the prior art:

[0014] The present utility model provides a near-bit drill circuit quick on-off device and a near-bit drill, which have a simple structure and are easy to install. The circuit breaker can connect the near-bit drill measurement circuit and the internal instrument circuit in advance on the ground, reducing the risk of damage to the instrument during installation at sea. After the connection is completed, the near-bit drill measurement circuit and the internal instrument circuit are disconnected by the circuit breaker first. When the test work is carried out, the circuit is then connected, reducing the battery power consumption during non-operation time and ensuring the operation time during formal construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic structural diagram of the near-bit drill circuit quick on-off device;

[0017] Figure 2 is a schematic principle diagram of the near circuit breaker;

[0018] Figure 3 is a schematic structural diagram of the near-bit drill;

[0019] Figure 4 Schematic structural diagram of the near-bit circuit quick on-off device installed in the groove of the near-bit

[0020] Figure 5 Perspective view of the near-bit circuit quick on-off device installed in the groove of the near-bit

[0021] In the figure: 1 - upper pressing plate; 2 - lower base; 3 - connecting plug; 4 - connecting socket; 5 - near-bit measurement circuit; 6 - internal instrument circuit; 7 - near-bit housing; 8 - gland; 9 - groove; 10 - seal Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] The purpose of the present invention is to provide a near-bit circuit quick on-off device and a near-bit to solve the problems existing in the above-mentioned prior art. The structure is simple and the installation is convenient. It can reduce the risk of damage to the instrument during installation at sea, reduce the battery power consumption during non-operation time, and ensure the operation time during formal construction.

[0024] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Embodiment 1

[0026] This embodiment provides a near-bit circuit quick on-off device, including a fixing member and a circuit breaker. The fixing member can be hermetically installed in the near-bit, and the circuit breaker is fixedly installed in the fixing member. The near-bit measurement circuit 5 and the internal instrument circuit 6 are connected inside the circuit breaker, and the circuit breaker can control the conduction or disconnection of the near-bit measurement circuit 5 and the internal instrument circuit 6. The structure is simple and the installation is convenient. The circuit breaker can connect the near-bit measurement circuit 5 and the internal instrument circuit 6 in advance on the ground, reducing the risk of damage to the instrument during installation at sea. After the connection is completed, the near-bit measurement circuit 5 and the internal instrument circuit 6 are disconnected by the circuit breaker first. When the measurement work is carried out, the circuit is connected again, reducing the battery power consumption during non-operation time and ensuring the operation time during formal construction.

[0027] In a further preferred embodiment of the present embodiment, the circuit breaker includes a connection socket 4 and a connection plug 3. The connection socket 4 is fixedly installed in a fixing member, and a near-bit measurement circuit 5 and an internal instrument circuit 6 are provided in the connection socket 4. The connection plug 3 is detachably connected to the connection socket 4. When the connection plug 3 is connected to the connection socket 4 in place, the near-bit measurement circuit 5 will be electrically connected to the internal instrument circuit 6. The plug-and-socket connection mode between the connection plug 3 and the connection socket 4 is simple, and it is not easy to make mistakes during the connection operation, ensuring the smooth progress of the test work.

[0028] In a further preferred embodiment of the present embodiment, the fixing member includes an upper pressing plate 1 and a lower base 2. The connection socket 4 is fixedly connected to the lower base 2. An opening for the connection plug 3 to enter and exit the connection socket 4 is provided on the lower base 2. The upper pressing plate 1 is detachably connected to the lower base 2 and covers the opening. The connection socket 4 is fixedly installed in the lower base 2 to prevent the connection socket 4 from moving and avoid circuit disconnection. When the near-bit measurement circuit 5 and the internal instrument circuit 6 need to be connected, first open the upper pressing plate 1, insert the connection plug 3 into the connection socket 4 to make the circuit connected, and then install the upper pressing plate 1 on the lower base 2 to prevent the connection plug 3 from falling off the connection socket 4.

[0029] Embodiment 2

[0030] This embodiment provides a near-bit, which includes the near-bit circuit quick on-off device of Embodiment 1, a near-bit housing 7 and a gland 8. A groove 9 is formed on the side wall of the near-bit housing 7. The near-bit circuit quick on-off device is arranged in the groove 9. The gland 8 is detachably connected to the groove 9 and covers the opening of the groove 9. The near-bit circuit quick on-off device has a simple structure, is convenient to install, and does not affect the overall length of the near-bit.

[0031] In a further preferred embodiment of the present embodiment, the near-bit further includes a seal 10. The seal 10 is arranged in the groove 9 and surrounds the outside of the near-bit circuit quick on-off device. The seal 10 is used to seal the gap between the groove 9 and the gland 8. When the gland 8 is connected to the near-bit housing 7, the seal 10 can be compressed to complete the sealing, ensuring construction safety.

[0032] In a further preferred embodiment of the present embodiment, the gland 8 is connected to the groove 9 by bolts. The bolt connection has good tightness and is convenient for disassembly.

[0033] In a further preferred embodiment of the present embodiment, the seal 10 is an O-ring.

[0034] In the present utility model, specific examples are used to illustrate the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A quick on-off device for a near-bit circuit, characterized in that: It includes a fixing part and a circuit switch. The fixing part can be hermetically installed in the near-bit, the circuit switch is fixedly installed in the fixing part, a near-bit measurement circuit and an internal instrument circuit are connected in the circuit switch, and the circuit switch can control the conduction or disconnection between the near-bit measurement circuit and the internal instrument circuit.

2. The near-bit circuit quick on-off device according to claim 1, wherein: The circuit switch includes a connection socket and a connection plug. The connection socket is fixedly installed in the fixing part, and the near-bit measurement circuit and the internal instrument circuit are arranged in the connection socket. The connection plug and the connection socket can be detachably connected. When the connection plug is connected to the connection socket in place, the near-bit measurement circuit and the internal instrument circuit will be conducted.

3. The quick on-off device for near-bit circuit according to claim 2, characterized in that: The fixing part includes an upper pressing plate and a lower base. The connection socket is fixedly connected to the lower base. An opening for the connection plug to enter and exit the connection socket is arranged on the lower base. The upper pressing plate can be detachably connected to the lower base and cover the opening.

4. A near-bit, characterized in that: It includes the near-bit circuit quick on-off device according to any one of claims 1-3, a near-bit housing and a gland. A groove is formed on the side wall of the near-bit housing. The near-bit circuit quick on-off device is arranged in the groove. The gland can be detachably connected to the groove and cover the opening of the groove.

5. The near-bit according to claim 4, characterized in that: It further includes a sealing member. The sealing member is arranged in the groove and surrounds the outside of the near-bit circuit quick on-off device. The sealing member is used to seal the gap between the groove and the gland.

6. The near-bit according to claim 4, characterized in that: The gland is connected to the groove by bolts.

7. The near-bit according to claim 5, characterized in that: The sealing member is an O-ring.

Images