A new type of line connection device for drilling collar instrument while drilling

Abstract

The invention provides a novel line connection device for a drill collar instrument while drilling, which comprises: a suspended short drill collar, a drill collar type sensor short section and a sensor assembly, wherein a first data channel is arranged in the suspended short drill collar, and a first data connection sealing base is arranged on the outer wall of the suspended short drill collar; a second data channel is arranged in the drill collar type sensor short section, and a second data connection sealing base is arranged on the outer wall of the drill collar type sensor short section; the sensor assembly comprises an external sensor and an internal sensor, the external sensor is fixedly arranged on the outer wall of the drill collar type sensor short section, and the internal sensor is fixedly arranged in the second data channel, one end of the data line is connected to the external sensor and penetrates through the second data connection sealing base, the first data connection sealing base and the first data channel are connected to the internal sensor, and a special-shaped line connection connector is used to cross the threaded connection between two drill collars, so as to prevent the data line from being unable to ensure stable connection due to drill collar assembly misalignment, and ensure the communication stability of sensors inside and outside the drill collar.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling equipment, in particular to a novel while-drilling drill collar instrument wire connection device. Background Art

[0002] Due to the measurement principle of downhole instruments, specific sensors need to be placed inside the drill collar or installed on the outer wall of the drill collar. The sensors installed on the inner and outer walls of the drill collar need to be connected for communication in order to analyze and process the detection data. Usually, wireless short transmission and wired transmission are used to achieve communication between sensors. Because the wireless short transmission method requires the use of a distributed power supply solution, and the reliability of wireless transmission is low, if the wired transmission method is used, a wired channel will be established in the same drill collar, and the signal cannot cross the threads between two different drill collars, and thus it is impossible to inspect, repair and replace faulty parts on site. Since the drill collar needs to be tightened by the tightening machine every time it is connected, the drill collars produced at different times and the starting points of each screw thread are different. Especially as the thread buckle is worn, the displacement corresponding to a specific point of the drill collar will change after each tightening, and the slotted wiring on the same side will be misaligned each time, and it is impossible to use direct connection to establish communication and energy connection. Summary of the invention

[0003] In view of this, the technical problem to be solved by the present invention is: how to realize the communication connection between the sensors inside and outside the drill collars between two assembled drill collars and ensure the connection stability of the communication data line.

[0004] To achieve the above object, the present invention provides a novel while-drilling drill collar instrument wire connection device, which comprises: a hanging short drill collar, a drill collar sensor short section, a heterosexual wire connector, a first data connection sealing base, a second data connection sealing base and a sensor assembly, wherein:

[0005] The suspended short drill collar and the drill collar type sensor short section are connected via threads;

[0006] A first data channel is arranged in the suspended short drill collar, and the first data channel is located at an end of the outer wall of the suspended short drill collar and is connected to a nut through a thread;

[0007] The first data connection sealed base and the second data connection sealed base are respectively provided with opposite-sex plugs, and the opposite-sex plugs provided in the first data connection sealed base and the second data connection sealed base are electrically connected to the opposite-sex wire connector;

[0008] The first data connection sealing base is arranged on the outer wall of the suspended short drill collar;

[0009] A second data channel is provided in the drill collar type sensor sub, and the second data channel is communicated with the first data channel;

[0010] The second data connection sealing base is arranged on the outer wall of the drill collar type sensor short section;

[0011] The sensor assembly includes an external sensor and an internal sensor, the external sensor is fixedly arranged on the outer wall of the drill collar type sensor short section, and the internal sensor is fixedly arranged in the second data channel; the internal sensor and the external sensor are connected by a data line, one end of the data line is connected to the external sensor and the other end is connected to the second data connection sealing base, one end of the data line is connected to the first data connection sealing base, and the other end is connected to the internal sensor via the first data channel.

[0012] Furthermore, the inner sensor is clamped by a straightening block, and the straightening block is arranged in the second data channel.

[0013] Furthermore, sealing rings are arranged inside the second data connection sealing base and the first data connection sealing base.

[0014] Furthermore, the second data connection sealing base and the first data connection sealing base are respectively arranged along the outer walls of the drill collar type sensor short section and the suspension short drill collar.

[0015] Furthermore, the straightening block is arranged to be attached to the inner wall of the second data channel.

[0016] Compared with the related art, the present invention provides a novel line connection device for a drill collar instrument while drilling, which comprises: a suspended short drill collar, a drill collar type sensor short section and a sensor assembly, wherein the suspended short drill collar and the drill collar type sensor short section are connected by threads; a first data channel is arranged in the suspended short drill collar, and a first data connection sealing base is arranged on the outer wall of the suspended short drill collar; a second data channel is arranged in the drill collar type sensor short section, and the second data channel is communicated with the first data channel; a second data connection sealing base is arranged on the outer wall of the drill collar type sensor short section; the sensor assembly comprises an outer sensor and an inner sensor, and the outer sensor is fixedly arranged on the drill collar type sensor short section. The outer wall of the section, the inner sensor is fixedly arranged in the second data channel; the inner sensor and the outer sensor are connected by a data line, one end of the data line is connected to the outer sensor and is passed through the second data connection sealing base, the first data connection sealing base and the first data channel to be connected to the inner sensor, spanning the threaded connection between the two drill collars to achieve simultaneous transmission of signals and high current energy, and in the event of misalignment of the two connected drill collars due to the threaded connection, the data line and the power line can be transmitted through the special-shaped wire connector, and the data line cannot be stably connected due to the misalignment of the drill collar assembly, thereby ensuring the communication stability of the sensors inside and outside the drill collar. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a novel while-drilling drill collar instrument wire connection device in an embodiment of the present invention;

[0018] Figure 2 It is a partially enlarged schematic diagram of a novel while-drilling drill collar instrument wire connection device in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] See also Figure 1-2 As shown, the present invention provides a novel while-drilling drill collar instrument wire connection device, which includes: a suspended short drill collar 10, a drill collar sensor short section 20, a heterosexual wire connector, a first data connection sealing base 12, a second data connection sealing base 22 and a sensor assembly.

[0021] The hanging short drill collar 10 and the drill collar type sensor short section 20 are connected via threads.

[0022] A first data channel 11 is arranged in the suspended short drill collar 10 . The end of the first data channel 11 located on the outer wall of the suspended short drill collar 10 is connected to a nut 13 through a thread. The nut 13 blocks the end of the first data channel 11 to prevent liquid or debris from entering the first data channel 11 .

[0023] A first data connection sealing base 12 is arranged on the outer wall of the suspended short drill collar 10, and a second data connection sealing base 22 is arranged on the outer wall of the drill collar type sensor short section 20; the second data connection sealing base 22 and the first data connection sealing base 12 are arranged along the outer walls of the drill collar type sensor short section 20 and the suspended short drill collar 10 respectively, and sealing rings are arranged inside the second data connection sealing base 22 and the first data connection sealing base 12 to improve the sealing performance of the data connection.

[0024] The first data connection sealing base 12 and the second data connection sealing base 22 are respectively provided with opposite-sex plugs, and the opposite-sex plugs of the first data connection sealing base 12 and the second data connection sealing base 22 are electrically connected to the opposite-sex wire connectors.

[0025] A special-shaped wire connector with a corresponding size suitable for the misaligned shape gap after the two drill collars are tightly buckled is used to establish a reliable connection between the first data connection sealing base and the second data connection sealing base.

[0026] The special-shaped wire connector is connected to the suspended short drill collar 10 and the drill collar sensor short section 20 by fastening bolts, thereby ensuring that the connecting plug is resistant to high pressure and insulated from the external environment, and ensuring a smooth transition on the outer surface of the drill collar.

[0027] The heterosexual wire-passing connector can realize the transmission of signals and currents between the first data connection sealing base 12 and the second data connection sealing base 22, and play a wire-passing role. Furthermore, the heterosexual wire-passing connector can effectively improve the protection of the intermediate cable and achieve better high-pressure sealing performance.

[0028] The special-shaped wire connector has different mechanical sizes according to the size of the drill collar. Corresponding to the misalignment of the drill collar after tightening in different situations, the appropriate model is selected for installation after the connected drill collars are misaligned.

[0029] A second data channel 21 is provided in the drill collar type sensor sub 20, and the second data channel 21 is communicated with the first data channel 11 to form a space for accommodating the data line communication.

[0030] The sensor assembly includes an outer sensor 31 and an inner sensor 32. The outer sensor 31 is fixedly arranged on the outer wall of the drill collar type sensor sub 20, and the inner sensor 32 is fixedly arranged in the second data channel 21. The inner sensor 32 is clamped by a straightening block 33, and the straightening block 33 is arranged in the second data channel 21. The straightening block 33 is arranged to fit the inner wall of the second data channel 21.

[0031] The inner sensor 32 and the outer sensor 31 are connected via a data cable 34, one end of the data cable 34 is connected to the outer sensor 31, and the other end is connected to the second data connection sealing base 22, one end of the data cable 34 is connected to the first data connection sealing base 12, and the other end is connected to the inner sensor 32 via the first data channel 11, thereby spanning the threaded connection between the two drill collars to achieve simultaneous transmission of signals and high current energy. In the event of misalignment of the two connected drill collars due to the threaded connection, the data cable 34 can be transmitted via the first and second data special-shaped plugs, and the data cable can be prevented from being unable to ensure stable connection due to misalignment of the drill collar assembly, thereby ensuring the communication stability of the sensors 31 inside and outside the drill collar.

[0032] In summary, the present invention provides a novel while-drilling drill collar instrument through-line connection device, which comprises: a suspended short drill collar, a drill collar type sensor short section and a sensor assembly, wherein the suspended short drill collar and the drill collar type sensor short section are connected by threads; a first data channel is arranged in the suspended short drill collar, and a first data connection sealing base is arranged on the outer wall of the suspended short drill collar; a second data channel is arranged in the drill collar type sensor short section, and the second data channel is communicated with the first data channel; a second data connection sealing base is arranged on the outer wall of the drill collar type sensor short section; the sensor assembly comprises an outer sensor and an inner sensor, wherein the outer sensor is fixedly arranged on the outer wall of the drill collar type sensor short section, and the inner sensor is fixedly arranged on the outer wall of the drill collar type sensor short section. The device is fixedly arranged in the second data channel; the inner sensor and the outer sensor are connected by a data line, one end of the data line is connected to the outer sensor and is passed through the second data connection sealing base, the first data connection sealing base and the first data channel to connect with the inner sensor, spanning the threaded connection between the two drill collars to achieve simultaneous transmission of signals and high current energy, and in the event of misalignment of the two connected drill collars due to the threaded connection, the data line and the power line can be transmitted through the first and second data sealing connection bases and the special-shaped wire connector, and the data line can be prevented from being unable to ensure stable connection due to misalignment of the drill collar assembly, thereby ensuring the communication stability of the sensors inside and outside the drill collar.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A novel line connection device for a drilling collar instrument, characterized in that: It includes: A hanging short drill collar, a drill collar type sensor short section, a special-shaped wire connector, a first data connection sealing base, a second data connection sealing base and a sensor assembly, wherein: The suspended short drill collar and the drill collar type sensor short section are connected via threads; A first data channel is arranged in the suspended short drill collar, and the first data channel is located at an end of the outer wall of the suspended short drill collar and is connected to a nut through a thread; The first data connection sealed base and the second data connection sealed base are respectively provided with special-shaped plugs, and the special-shaped plugs provided in the first data connection sealed base and the second data connection sealed base are electrically connected to the special-shaped wire connector; The special-shaped wire connector has different mechanical sizes according to the size of the drill collar, corresponding to the misalignment of the drill collar after tightening in different situations, and the appropriate model is selected for installation after the connected drill collar is misaligned; The first data connection sealing base is arranged on the outer wall of the suspended short drill collar; A second data channel is provided in the drill collar type sensor sub, and the second data channel is communicated with the first data channel; The second data connection sealing base is arranged on the outer wall of the drill collar type sensor short section; The sensor assembly comprises an outer sensor and an inner sensor, wherein the outer sensor is fixedly arranged on the outer wall of the drill collar type sensor sub, and the inner sensor is fixedly arranged in the second data channel; the inner sensor and the outer sensor are connected via a data line, one end of the data line is connected to the outer sensor and the other end is connected to the second data connection sealing base, one end of the data line is connected to the first data connection sealing base, and the other end is connected to the inner sensor via the first data channel; The inner sensor is clamped by a righting block, and the righting block is arranged in the second data channel; The second data connection sealing base and the first data connection sealing base are respectively arranged along the outer wall of the drill collar type sensor short section and the hanging short drill collar.

2. The novel while drilling drill collar instrument wire connection device as claimed in claim 1, characterized in that: Sealing rings are arranged inside the second data connection sealing base and the first data connection sealing base.

3. The novel while-drilling drill collar instrument wire connection device as claimed in claim 1, characterized in that: The straightening block is arranged to be attached to the inner wall of the second data channel.

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