Signal carrier communication conversion nipple and rotary steering system

Abstract

The invention relates to the technical field of measurement while drilling, in particular to a signal carrier communication conversion nipple and a rotary steering system, and aims to solve the technical problem that tools need to be replaced during single well construction in the prior art. According to the signal carrier communication conversion nipple, communication protocols of a high-build-up-rate rotary steering tool and an azimuth resistivity tool which are in a single-bus structural form (that is, transmission of signals and a power source is achieved through one wire) are matched, so that communication connection can be established between the high-build-up-rate rotary steering tool and the azimuth resistivity tool, and uploading and downloading of the signals are achieved; during single well construction, the rotary steering system formed by integrating the azimuth resistivity tool and the high-build-up-rate rotary steering tool through the signal carrier communication conversion short section can conduct edge detection and imaging while deflecting, and compared with the prior art, the time and cost for replacing the tool can be saved, and the rotary steering system can be widely applied to construction of horizontal wells and extended reach wells.

Description

Technical Field

[0001] The invention relates to the technical field of measurement while drilling, and in particular to a signal carrier communication conversion sub and a rotary steering system. Background Art

[0002] With the continuous growth of unconventional reservoir exploration and development, the application demand for high-build-rate rotary steerable tools and azimuthal resistivity tools is becoming increasingly urgent.

[0003] When constructing a single well, it is necessary to first lower the azimuth resistivity tool to detect the edge and image. After obtaining the resistivity parameters, the high-inclination rotary steering tool is replaced to create inclination. The entire construction process requires tool replacement, which is inefficient. Summary of the invention

[0004] The object of the present invention is to provide a signal carrier communication conversion nipple and a rotary steering system to solve the technical problem of the need to replace tools during single well construction in the related art.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] In a first aspect, the signal carrier communication conversion short section provided by the present invention comprises: a short section body, a circuit board module, a rotatable four-core plug pin, a single-core pressure-bearing plug pin and a communication slip ring;

[0007] The short section body is in a tubular shape, one end of which is used to be threadedly connected to an azimuth resistivity tool, and the other end of which is used to be threadedly connected to a high-build-rate rotary steering tool;

[0008] The circuit board module is arranged in the short section body;

[0009] The rotatable four-core plug is also disposed in the short section body and close to one end of the short section body. The rotatable four-core plug is electrically connected to the circuit board module by wire and is also used to electrically connect to the azimuth resistivity tool;

[0010] The single-core pressure-bearing pin is arranged in the side wall of the short section body, one end of which is electrically connected to the circuit board module by wire, and the other end is plugged into the communication slip ring;

[0011] The communication slip ring is arranged on the end surface of the short section body away from the rotatable four-core plug pin, and is used for electrical connection with the high-inclination rate rotary guide tool.

[0012] Furthermore, the signal carrier communication conversion sub also includes a pressure-resistant centralizer, and the pressure-resistant centralizer includes a pressure-resistant centralizer body;

[0013] The compression-resistant and straightening body is arranged in the short section body and is provided with a wire-passing passage penetrating the body;

[0014] The rotatable four-core plug pin is arranged at one end of the pressure-resistant and straightening body, and a plurality of wires led out from the rotatable four-core plug pin are inserted into the wire-passing channel and are electrically connected to the circuit board module;

[0015] The circuit board module is arranged in the wire-passing channel, and a single wire led out from the circuit board module passes through the wire-passing channel and is electrically connected to the single-core pressure-bearing pin.

[0016] Furthermore, the compression-resistant and righting body comprises a compression-resistant section, a joint righting section and a line conversion section;

[0017] The compression-resistant section is cylindrical and forms a first annulus with the short section body. The two ends of the compression-resistant section are respectively connected with the joint straightening section and the line conversion section by threaded connection.

[0018] The circuit board module is fixed in the pressure-resistant section;

[0019] A second annulus is formed between the joint straightening section and the short section body, and the rotatable four-core plug pin is connected to the end of the joint straightening section away from the pressure-resistant section through a fixing cap;

[0020] The line conversion section is provided with a flow passage extending along its own axial direction, and the flow passage is communicated with the first annulus.

[0021] Furthermore, a circuit skeleton is provided in the compression-resistant section;

[0022] The circuit skeleton is fixedly connected to the joint straightening section or the anti-pressure section, and its two ends are respectively abutted against the joint straightening section and the anti-pressure section, and both ends are sleeved with a first sealing ring, and the first sealing ring abuts against the inner wall of the anti-pressure section;

[0023] The circuit board module is fixedly connected to the circuit frame.

[0024] Furthermore, the compression-resistant centralizer also includes an eight-core pressure-bearing plug and a ferrule;

[0025] The eight-core pressure-bearing plug is arranged in the joint straightening section, and one end thereof contacts the step surface of the wire-passing channel;

[0026] The ferrule is also arranged in the joint straightening section, and one end of the ferrule abuts against the circuit frame, and the other end abuts against the other end of the eight-core pressure-bearing plug;

[0027] A plurality of wires led out from the rotatable four-core plug are connected to the eight-core pressure-bearing plug, and a plurality of wires led out from the eight-core pressure-bearing plug are connected to the circuit board module.

[0028] Furthermore, the line conversion section is fixed to the side wall of the short section body through a threaded sleeve, and the threaded sleeve has an inner hole that penetrates through it;

[0029] The line passage in the line conversion section is L-shaped and communicates with the inner hole;

[0030] The outer sleeve of the line conversion section is provided with a first retaining ring, and the first retaining ring is embedded in the line conversion section and the inner wall of the short section body;

[0031] A second sealing ring is also sleeved on the outside of the line conversion section. A plurality of second sealing rings are provided and are separately arranged on both sides of the line thread sleeve and abut against the inner wall of the short section body.

[0032] Furthermore, the compression-resistant centralizer further comprises a four-core connector;

[0033] A single wire led out from the circuit board module passes through the inner hole and is connected to the four-core connector;

[0034] The four-core connector is arranged in the side wall of the short section body, and the single electric wire led out from the four-core connector is connected to the single-core pressure-bearing pin.

[0035] Furthermore, a rubber straightening block is provided outside the joint straightening section, and the rubber straightening block abuts against the joint straightening section and the inner wall of the short section body respectively, and is fixedly connected to the joint straightening section by screws.

[0036] Furthermore, a second retaining ring and a third sealing ring are sleeved on the outside of the joint straightening section, the second retaining ring and the third sealing ring are both located at the end of the joint straightening section where the rotatable four-core pin is provided, and the second retaining ring is embedded in the joint straightening section.

[0037] In summary, the technical effects that can be achieved by the signal carrier communication conversion short section provided by the present invention are:

[0038] The signal carrier communication conversion short section includes a short section body, a circuit board module, a rotatable four-core pin, a single-core pressure-bearing pin and a communication slip ring; the short section body is tubular, one end of which is used for threaded connection with an azimuth resistivity tool, and the other end is used for threaded connection with a high-inclination rate rotary steering tool; the circuit board module is arranged in the short section body; the rotatable four-core pin is also arranged in the short section body, and is close to one end of the short section body, the rotatable four-core pin is electrically connected to the circuit board module by wire, and is also used for electrically connecting to the azimuth resistivity tool; the single-core pressure-bearing pin is arranged in the side wall of the short section body, one end of which is electrically connected to the circuit board module by wire, and the other end is plugged into the communication slip ring; the communication slip ring is arranged on the end face of the short section body away from the rotatable four-core pin, and is used for electrically connecting to the high-inclination rate rotary steering tool.

[0039] In the signal carrier communication conversion short section, the azimuth resistivity tool and the high inclination rate rotary steering tool can be mechanically connected through the short section body; the rotatable four-core pin is adapted to the serial port of the azimuth resistivity tool, and when the short section body is connected to the azimuth resistivity tool, the circuit board module establishes a communication connection with the azimuth resistivity tool; through the communication slip ring, a communication connection can be established between the circuit board module and the high inclination rate rotary steering tool.

[0040] It can be seen that the signal carrier communication conversion short section makes the communication protocols of the high-inclination rate rotary steering tool and the azimuth resistivity tool in the single bus structure (i.e., the signal and power are transmitted through one line) match each other, so that the two can establish a communication connection and realize the uploading and downloading of signals. During the construction of a single well, the rotary steering system composed of the azimuth resistivity tool and the high-inclination rate rotary steering tool through the signal carrier communication conversion short section can not only perform deflection, but also perform edge detection and imaging. Compared with the existing technology, it can save the time and cost of replacing tools and can be widely used in the construction of horizontal wells and large-reach wells.

[0041] In a second aspect, the rotary steerable system provided by the present invention comprises an azimuth resistivity tool, a high build-up rate rotary steerable tool and the signal carrier communication conversion sub;

[0042] The azimuth resistivity tool is threadedly connected to one end of the short section body and plugged into the rotatable four-core plug pin;

[0043] The high-inclination rate rotary guide tool is threadedly connected to the other end of the short section body and is connected to the communication slip ring.

[0044] The beneficial effects of a rotary steering system provided by the present invention are:

[0045] The rotary steering system provided by the present invention includes a signal carrier communication conversion short section. Therefore, the technical advantages and effects achieved by the rotary steering system also include the technical advantages and effects achieved by the above-mentioned signal carrier communication conversion short section, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 A longitudinal sectional view of a signal carrier communication conversion short section provided by an embodiment of the present invention;

[0048] Figure 2 for Figure 1 an enlarged schematic diagram of the lower end portion;

[0049] Figure 3 A longitudinal sectional view of the signal carrier communication conversion short section provided by an embodiment of the present invention when in use.

[0050] Icons: 1- short section body; 2- rotatable four-core pin; 3- single-core pressure-bearing pin; 4- communication slip ring; 5- pressure-resistant section; 6- connector straightening section; 7- line conversion section; 8- fixing cap; 9- circuit skeleton; 10- first sealing ring; 11- eight-core pressure-bearing plug; 12- ferrule; 13- threaded sleeve; 14- first retaining ring; 15- second sealing ring; 16- four-core connector; 17- rubber straightening block; 18- screw; 19- second retaining ring; 20- third sealing ring; 21- wave spring; 22- spacer sleeve; 23- cover plate; 24- fourth sealing ring; 25- retaining ring; 26- fifth sealing ring; 27- adjustment washer. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0054] When constructing a single well, it is necessary to first lower the azimuth resistivity tool to detect the edge and image. After obtaining the resistivity parameters, the high-inclination rotary steering tool is replaced to create inclination. The entire construction process requires tool replacement, which is inefficient.

[0055] In view of this, the present invention provides a signal carrier communication conversion short section, including a short section body 1, a circuit board module, a rotatable four-core pin 2, a single-core pressure-bearing pin 3 and a communication slip ring 4; the short section body 1 is tubular, one end of which is used to be threadedly connected to an azimuth resistivity tool, and the other end is used to be threadedly connected to a high-inclination rate rotary guide tool; the circuit board module is arranged in the short section body 1; the rotatable four-core pin 2 is also arranged in the short section body 1, and is close to one end of the short section body 1. The pin 2 is electrically connected to the circuit board module by wire, and is also used to be electrically connected to the azimuth resistivity tool; the single-core pressure-bearing pin 3 is arranged in the side wall of the short section body 1, one end of which is electrically connected to the circuit board module by wire, and the other end is plugged into the communication slip ring 4; a spacer sleeve 22 is provided between the single-core pressure-bearing pin 3 and the communication slip ring 4 to adjust the distance between the single-core pressure-bearing pin 3 and the communication slip ring 4; the communication slip ring 4 is arranged on the end face of the short section body 1 away from the rotatable four-core pin 2, and is used to be electrically connected to the high-inclination rate rotary steering tool.

[0056] In the signal carrier communication conversion short section, the azimuth resistivity tool and the high inclination rate rotary steering tool can be mechanically connected through the short section body 1; the rotatable four-core pin 2 is adapted to the serial port of the azimuth resistivity tool, and when the short section body 1 is connected to the azimuth resistivity tool, the circuit board module establishes a communication connection with the azimuth resistivity tool; through the communication slip ring 4, a communication connection can be established between the circuit board module and the high inclination rate rotary steering tool.

[0057] It can be seen that the signal carrier communication conversion short section makes the communication protocols of the high-inclination rate rotary steering tool and the azimuth resistivity tool in the single bus structure (i.e., the signal and power are transmitted through one line) match each other, so that the two can establish a communication connection and realize the uploading and downloading of signals. During the construction of a single well, the rotary steering system composed of the azimuth resistivity tool and the high-inclination rate rotary steering tool through the signal carrier communication conversion short section can not only perform deflection, but also perform edge detection and imaging. Compared with the existing technology, it can save the time and cost of replacing tools and can be widely used in the construction of horizontal wells and large-reach wells.

[0058] In addition, it should be added here that the circuit board module includes a modem board, a power board and a serial port board. The two-way communication and the encoded upload are mainly used for the azimuth resistivity tool. The signal carrier of the high-inclination rate rotary steering tool is transmitted to the modem board through the communication slip ring 4 single bus. The modem board demodulates the signal carrier into a signal and power. The serial port board completes the conversion between the single bus signal and the serial port, transmits the signal to the measurement circuit of the azimuth resistivity tool, and performs the encoded drive pulse upload signal. The command reception is mainly used for the high-inclination rate rotary steering tool.

[0059] The following combination Figures 1 to 3The structure and shape of the signal carrier communication conversion short section provided in this embodiment are described in detail:

[0060] For further reference, Figure 1 and Figure 3 The signal carrier communication conversion short section also includes a pressure-resistant straightener, which includes a pressure-resistant straightener body; the pressure-resistant straightener body is arranged in the short section body 1, and is provided with a wire passing channel running through it; a rotatable four-core pin 2 is arranged at one end of the pressure-resistant straightener body, and multiple wires led out from the rotatable four-core pin 2 are inserted into the wire passing channel and are electrically connected to the circuit board module; the circuit board module is arranged in the wire passing channel, and a single wire led out from the circuit board module passes through the wire passing channel and is electrically connected to the single-core pressure-bearing pin 3.

[0061] Continue to refer Figure 1 and Figure 3 The compression-resistant and straightening body includes a compression-resistant section 5, a joint straightening section 6 and a line conversion section 7, wherein the compression-resistant section 5 is specifically:

[0062] by Figure 1 For example, the pressure-resistant section 5 is cylindrical and forms a first annulus with the short section body 1. The two ends of the pressure-resistant section 5 are respectively threadedly connected to the joint straightening section 6 and the line conversion section 7. The joint straightening section 6 is outer-coated with a retaining ring and an O-ring, which abut against the inner wall of the pressure-resistant section 5. The lower end of the pressure-resistant section 5 is outer-coated with an O-ring and a spare ring, which abut against the inner wall of the line conversion section 7; a circuit skeleton 9 is provided in the pressure-resistant section 5, and the circuit skeleton 9 is fixed to the joint straightening section 6 by hexagon socket screws, and its two ends abut against the joint straightening section 6 and the pressure-resistant section 5 respectively, and the two ends are respectively sleeved with a first sealing ring 10, which abuts against the inner wall of the pressure-resistant section 5, and the circuit board module is fixedly connected to the circuit skeleton 9.

[0063] In the above design, the assembly of the pressure-resistant section 5 and the short section body 1 ensures the normal flow of high-pressure mud, and the connection and coordination between the pressure-resistant section 5 and the joint straightening section 6 and the line conversion section 7 prevents the high-pressure mud from entering the pressure-resistant section 5, thereby protecting the circuit board module; in addition, the first sealing ring 10 plays a shock-absorbing role, ensuring the stability of the circuit board module, and further ensuring the effectiveness of the electrical connection between the circuit board module and the rotatable four-core pin 2 and the single-core pressure-bearing pin 3.

[0064] Regarding the joint straightening section 6, specifically:

[0065] Continue with Figure 1For example, a second annulus is formed between the joint straightening section 6 and the short section body 1, and the second annulus is connected to the first annulus; the upper end of the joint straightening section 6 is recessed downward from its end surface to form a receiving groove, and along the circumference of the receiving groove, a plurality of spaced balls are arranged on the side wall of the receiving groove, and the balls are spherically hinged with the joint straightening section 6; the rotatable four-core plug pin 2 is inserted into the receiving groove and cooperates with the balls in rolling; a wave spring 21 is arranged in the receiving groove, and the fixing cap 8 limits the rotatable four-core plug pin 2 to the joint straightening section 6, and compresses the wave spring 21, so that the wave spring 21 abuts between the rotatable four-core plug pin 2 and the bottom wall of the receiving groove. With such a design, when the signal carrier communication conversion short section is threadedly connected with the azimuth resistivity tool, the rotatable four-core plug pin 2 is not interfered by the rotation, which ensures its smooth connection with the azimuth resistivity tool serial port.

[0066] The pressure-resistant straightener also includes an eight-core pressure-bearing plug 11 and a ferrule 12; the eight-core pressure-bearing plug 11 is arranged in the joint straightening section 6, and one end thereof contacts the step surface of the wire-passing channel, the ferrule 12 is also arranged in the joint straightening section 6, and one end thereof abuts against the circuit skeleton 9, and the other end abuts against the other end of the eight-core pressure-bearing plug 11, thereby limiting the eight-core pressure-bearing plug 11 and preventing the eight-core pressure-bearing plug 11 from moving; a plurality of wires led out from the rotatable four-core pin 2 are welded to the eight-core pressure-bearing plug 11, and a plurality of wires led out from the eight-core pressure-bearing plug 11 are welded to the circuit board module, thereby realizing the communication connection between the rotatable four-core pin 2 and the circuit board module.

[0067] The joint straightening section 6 is provided with a rubber straightening block 17, which abuts against the joint straightening section 6 and the inner wall of the short section body 1 respectively, and is fixedly connected to the joint straightening section 6 by screws 18. Here, the rubber straightening block 17 plays a role in straightening and shock absorption for the joint straightening section 6, ensuring that the rotatable four-core plug 2 is in a preset position and can be smoothly plugged into the serial port of the azimuth resistivity tool, while also ensuring the stability of the connection of the rotatable four-core plug 2, and improving the reliability of the communication connection.

[0068] Regarding line conversion section 7, specifically:

[0069] Continue with Figure 1 For example, the line conversion section 7 is provided with a flow passage extending along its own axial direction, and the flow passage is connected with the first annulus; the line conversion section 7 is fixed to the side wall of the short section body 1 by a threaded sleeve 13, and the threaded sleeve 13 has an inner hole running through itself; the line passage in the line conversion section 7 is L-shaped and connected with the inner hole; the line conversion section 7 is outerly provided with a first retaining ring 14, and the first retaining ring 14 is embedded in the line conversion section 7 and the inner wall of the short section body 1; the line conversion section 7 is also outerly provided with a second sealing ring 15, and a plurality of second sealing rings 15 are provided, and are arranged on both sides of the threaded sleeve 13, and abut against the inner wall of the short section body 1.

[0070] The above design allows high-pressure mud to pass smoothly through the pressure-resistant straightening body, achieving the sealing of the connection between the line conversion section 7 and the short section body 1, and preventing high-pressure mud from entering the flow channel; in addition, it also realizes the conversion of wiring between axial type and wall type, so that the circuit board module and the single-core pressure-bearing pin 3 establish a training connection.

[0071] like Figure 1 As shown, the compression straightener also includes a four-core connector 16; a single wire led out from the circuit board module passes through the inner hole and is connected to the four-core connector 16, and the single wire led out from the four-core connector 16 is connected to the single-core pressure-bearing pin 3; the outer wall of the line conversion section 7 is recessed inward to form a wiring hole groove, and the wiring hole groove corresponds to a cover plate 23, which is fixed to the line conversion section 7 by an inner hexagon screw to cover the wiring hole groove opening, and a fourth sealing ring 24 is also provided between the cover plate 23 and the line conversion section 7 to seal the wiring hole groove; a connector fixing plate is provided in the wiring hole groove, and the connector fixing plate is fixedly connected to the line conversion section 7, and is connected to the four-core connector 16 by a cross countersunk screw; a corresponding plug is provided on the cover plate 23, and the plug is plugged into and matched with the four-core connector 16 to establish a communication connection with the computer.

[0072] By adopting the above design, the communication connection between the circuit board module and the communication slip ring 4 is also passed through the four-core connector 16, and the transmitted memory data can be read and the parameters can be set through the computer; in addition, the cooperation between the cover plate 23 and the fourth sealing ring 24 prevents high-pressure mud from entering the wiring hole groove, thereby realizing the protection of the four-core connector 16 and the circuit board module.

[0073] The present invention also provides a rotary steering system, including an azimuth resistivity tool, a high inclination rate rotary steering tool and a signal carrier communication conversion short section; the azimuth resistivity tool is threadedly connected to one end of the short section body 1 and is plugged into a rotatable four-core pin 2; the high inclination rate rotary steering tool is threadedly connected to the other end of the short section body 1 and is connected to a communication slip ring 4.

[0074] Specifically, refer to Figure 1 The connector straightening section 6 is also provided with a second retaining ring 19, a third sealing ring 20 and an adjusting washer 27; the second retaining ring 19 and the third sealing ring 20 are both located at the end of the connector straightening section 6 provided with the rotatable four-core plug pin 2, and the second retaining ring 19 is embedded in the connector straightening section 6; the adjusting washer 27 is located at the upper end of the connector straightening section 6 and is used to contact the corresponding step surface. Figure 1 and Figure 2 As shown, a stop ring 25 and a fifth sealing ring 26 are provided on the outer sleeve of the lower end of the short section body 1, wherein the stop ring 25 is embedded in the corresponding step surface.

[0075] After the azimuth resistivity tool and the signal carrier communication conversion short section are connected, the adjustment gasket 27 is abutted between the azimuth resistivity tool and the joint straightening section 6, thereby ensuring the tightness of the connection between the two. Here, the second retaining ring 19 and the third sealing ring 20 respectively play the role of axial limiting and sealing; after the high-inclination rate rotary steering tool and the signal carrier communication conversion short section are connected, the stop ring 25 is abutted between the high-inclination rate rotary steering tool and the short section body 1, and it and the fifth sealing ring 26 prevent the high-pressure mud in the drill string from contacting the communication slip ring 4.

[0076] In addition, since the rotary steering system provided by the present invention includes a signal carrier communication conversion short section, the technical advantages and effects achieved by the rotary steering system also include the technical advantages and effects achieved by the above-mentioned signal carrier communication conversion short section, which will not be repeated here.

[0077] 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A signal carrier communication conversion sub, characterized in that: include: A short section body (1), a circuit board module, a rotatable four-core plug pin (2), a single-core pressure-bearing plug pin (3), and a communication slip ring (4); The short section body (1) is tubular, one end of which is used to be threadedly connected to an azimuth resistivity tool, and the other end of which is used to be threadedly connected to a high-build-rate rotary steering tool; The circuit board module is arranged in the short section body (1); The rotatable four-core plug pin (2) is also arranged in the short section body (1) and close to one end of the short section body (1). The rotatable four-core plug pin (2) is electrically connected to the circuit board module by wire, and is also used to be electrically connected to the azimuth resistivity tool; The single-core pressure-bearing pin (3) is arranged in the side wall of the short section body (1), one end of which is electrically connected to the circuit board module by wire, and the other end of which is plugged into the communication slip ring (4); The communication slip ring (4) is arranged on the end surface of the short section body (1) away from the rotatable four-core plug pin (2) and is used for electrical connection with a high-inclination rate rotary guide tool.

2. The signal carrier communication conversion short section according to claim 1 is characterized in that: The signal carrier communication conversion sub also includes a pressure-resistant centralizer, and the pressure-resistant centralizer includes a pressure-resistant centralizer body; The pressure-resistant and straightening body is arranged in the short section body (1) and is provided with a wire-passing passage penetrating the body; The rotatable four-core plug pin (2) is arranged at one end of the pressure-resistant and straightening body, and a plurality of electric wires led out from the rotatable four-core plug pin (2) are inserted into the wire passage and are electrically connected to the circuit board module; The circuit board module is arranged in the wire passage, and a single wire led out from the circuit board module passes through the wire passage and is electrically connected to the single-core pressure-bearing pin (3).

3. The signal carrier communication conversion short section according to claim 2 is characterized in that: The pressure-resistant and straightening body comprises a pressure-resistant section (5), a joint straightening section (6) and a line conversion section (7); The compression-resistant section (5) is cylindrical and forms a first annulus with the short section body (1). The two ends of the compression-resistant section (5) are respectively threadedly connected to the joint straightening section (6) and the line conversion section (7); The circuit board module is fixed in the pressure-resistant section (5); A second annulus is formed between the joint straightening section (6) and the short section body (1), and the rotatable four-core plug pin (2) is connected to the end of the joint straightening section (6) away from the pressure-resistant section (5) through a fixing cap (8); The line conversion section (7) is provided with a flow passage extending along its own axial direction, and the flow passage is communicated with the first annulus.

4. The signal carrier communication conversion short section according to claim 3 is characterized in that: A circuit skeleton (9) is provided in the compression-resistant section (5); The circuit skeleton (9) is fixedly connected to the joint straightening section (6) or the anti-pressure section (5), and its two ends are respectively in contact with the joint straightening section (6) and the anti-pressure section (5), and both ends are sleeved with a first sealing ring (10), and the first sealing ring (10) is in contact with the inner wall of the anti-pressure section (5); The circuit board module is fixedly connected to the circuit frame (9).

5. The signal carrier communication conversion sub according to claim 4, characterized in that: The pressure-resistant centralizer also includes an eight-core pressure-bearing plug (11) and a ferrule (12); The eight-core pressure-bearing plug (11) is arranged in the joint straightening section (6), and one end thereof is in contact with the step surface of the wire-passing channel; The ferrule (12) is also arranged in the joint straightening section (6), and one end thereof abuts against the circuit frame (9), and the other end abuts against the other end of the eight-core pressure-bearing plug (11); A plurality of wires led out from the rotatable four-core plug pin (2) are connected to the eight-core pressure-bearing plug (11), and a plurality of wires led out from the eight-core pressure-bearing plug (11) are connected to the circuit board module.

6. The signal carrier communication conversion short section according to claim 3 is characterized in that: The line conversion section (7) is fixed to the side wall of the short section body (1) through a threaded sleeve (13), and the threaded sleeve (13) has an inner hole that penetrates the sleeve. The line passage in the line conversion section (7) is L-shaped and communicates with the inner hole; The outer shell of the line conversion section (7) is provided with a first retaining ring (14), and the first retaining ring (14) is embedded in the inner wall of the line conversion section (7) and the short section body (1); The line conversion section (7) is also sleeved with a second sealing ring (15). A plurality of second sealing rings (15) are provided and are arranged on both sides of the threaded sleeve (13) and abut against the inner wall of the short section body (1).

7. The signal carrier communication conversion sub according to claim 6, characterized in that: The compression-resistant centralizer further comprises a four-core connector (16); A single electric wire led out from the circuit board module passes through the inner hole and is connected to the four-core connector (16); The four-core connector (16) is arranged in the side wall of the short section body (1), and a single electric wire led out from the four-core connector (16) is connected to the single-core pressure-bearing pin (3).

8. The signal carrier communication conversion short section according to claim 3 is characterized in that: The joint straightening section (6) is provided with a rubber straightening block (17) outside, and the rubber straightening block (17) is respectively in contact with the joint straightening section (6) and the inner wall of the short section body (1), and is fixedly connected to the joint straightening section (6) by means of screws (18).

9. The signal carrier communication conversion sub according to claim 8, characterized in that: The connector straightening section (6) is also sleeved with a second retaining ring (19) and a third sealing ring (20); the second retaining ring (19) and the third sealing ring (20) are both located at the end of the connector straightening section (6) where the rotatable four-core plug pin (2) is provided, and the second retaining ring (19) is embedded in the connector straightening section (6).

10. A rotary steerable system, characterized in that: It comprises an azimuth resistivity tool, a high build-up rate rotary steering tool and a signal carrier communication conversion sub as claimed in any one of claims 1 to 9; The azimuth resistivity tool is threadedly connected to one end of the short section body (1) and is plugged into and matched with the rotatable four-core plug pin (2); The high-inclination-rate rotary guide tool is threadedly connected to the other end of the short section body (1), and is also connected to the communication slip ring (4).

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