A connecting device for drilling

Abstract

The present invention relates to a connecting device for drilling, which includes a circulation cylinder, an upper cover, a probe arranged in the circulation cylinder, a top arranged outside the circulation cylinder, and a top connecting rod connecting the probe and the top; the circulation cylinder has a front end opening, and the upper cover blocks the front end opening; the circulation cylinder includes an inner circulation cylinder and an outer circulation cylinder, and the space between the inner circulation cylinder and the outer circulation cylinder is filled with heat insulation material; the upper cover is provided with at least one liquid inlet hole, and the bottom of the circulation cylinder is provided with at least one liquid outlet hole. The heat insulation material between the inner circulation cylinder and the outer circulation cylinder of the present invention can absorb the heat in the circulation cylinder and reduce the probe temperature by assisting the circulation of the drilling fluid. Through two-step cooling measures, the probe temperature is achieved within the working temperature range, the working performance of the probe is kept stable, and the purpose of achieving high-temperature connection is achieved.

Description

Technical Field

[0001] The invention relates to a communication device for drilling. Background Art

[0002] During coalbed methane (CBM) horizontal well construction, a permanent magnetic sub is lowered into the drilling well to generate an artificial magnetic field. A probe is then lowered into the target well to collect the artificial magnetic field signal, which is then transmitted to the surface via a logging cable. Software then accurately analyzes the signal to calculate the distance between the two wells and the current drill bit position, eliminating the relative cumulative error in measurement while drilling (MWD) and accurately guiding the horizontal well trajectory to connect the two wells. With growing environmental awareness and increasingly scarce energy resources, the rational development and utilization of geothermal resources is gaining increasing popularity. With continuous innovation and breakthroughs in the development of emerging energy sources such as geothermal, geothermal development is experimenting with connected well groups, with promising results. Furthermore, my country boasts abundant salt mine resources. Precision connection guidance systems can reduce connection time to just a few hours, significantly shortening well construction cycles and reducing drilling costs. Therefore, the application of improved precision connection guidance systems in ultra-deep brine horizontal well connection operations also holds a broad market potential. Summary of the Invention

[0003] The inventors have discovered that existing connectivity guidance measurement technologies, all developed for the early coalbed methane (CBM) sector, have low temperature tolerances, resulting in distorted measurement data and an inability to accurately guide connectivity operations. This technology, however, fails to meet the demands of current high-temperature deep well drilling projects, such as geothermal and brine wells. In response to this, there is an urgent need for a drilling connectivity device that meets the requirements for probe operation in high-temperature environments and enables uninterrupted and stable two-well connectivity operations in such environments. Consequently, embodiments of the present invention provide a high-temperature-resistant drilling connectivity device.

[0004] The embodiment of the present invention provides a connecting device for drilling, comprising: a circulation cylinder, an upper cover, a probe disposed in the circulation cylinder, a tip disposed outside the circulation cylinder, and a tip connecting rod connecting the probe and the tip;

[0005] The circulation cylinder has a front end opening, and the upper cover blocks the front end opening;

[0006] The circulation cylinder comprises an inner circulation cylinder and an outer circulation cylinder, and a heat insulating material is filled between the inner circulation cylinder and the outer circulation cylinder;

[0007] The upper cover is provided with at least one liquid inlet hole, and the bottom of the circulation cylinder is provided with at least one liquid outlet hole.

[0008] In one or some optional embodiments, the upper cover is provided with an axially penetrating first connecting rod channel, the top connecting rod passes through the first connecting rod channel, and the outer wall of the top connecting rod is tightly fitted with the inner wall of the first connecting rod channel.

[0009] In one or some optional embodiments, the communication device for drilling further includes: a conversion joint;

[0010] The conversion joint is connected to the probe and the upper cover respectively;

[0011] The conversion joint is provided with an axially penetrating second connecting rod channel, the top connecting rod passes through the second connecting rod channel, and the outer wall of the top connecting rod is tightly fitted with the inner wall of the second connecting rod channel.

[0012] In one or some optional embodiments, at least a portion of the top connecting rod located in the circulation cylinder is an elastic portion, and the elastic portion is placed outside the first connecting rod channel and the second connecting rod channel.

[0013] In one or some optional embodiments, the probe tube includes a receiving cavity, the receiving cavity is provided with an internal thread, the conversion joint is provided with an external thread, and the conversion joint is threadedly connected to the probe tube.

[0014] In one or some optional embodiments, the probe further includes a connection hole; the connection hole is connected to the accommodating cavity;

[0015] In one or some optional embodiments, the top connecting rod is connected to the wiring hole.

[0016] In one or some optional embodiments, the communication device for drilling further includes a retaining ring;

[0017] The elastic part is placed in the accommodating cavity, the retaining ring is sleeved on the elastic part, and two ends of the retaining ring are in contact with the bottom of the conversion joint and the bottom of the accommodating cavity respectively.

[0018] In one or some optional embodiments, the communication device for drilling further includes a first sealing member;

[0019] The first sealing member is sealed between the outer wall of the retaining ring and the inner wall of the accommodating cavity.

[0020] In one or some optional embodiments, the elastic portion is configured as a spring.

[0021] In one or some optional embodiments, there are multiple at least one liquid inlet holes, and the multiple liquid inlet holes are evenly distributed along the central radial direction of the upper cover.

[0022] In one or some optional embodiments, the circulation cylinder further includes an upper baffle;

[0023] The inner layer circulation drum includes a circulation inner drum and a lower baffle for blocking the bottom of the circulation inner drum;

[0024] The outer layer circulation drum comprises a circulation outer drum and a lower cover for sealing the bottom of the circulation outer drum;

[0025] The liquid outlet hole passes through the lower baffle and the lower cover;

[0026] The upper baffle blocks the top of the circulation inner cylinder and the top of the circulation outer cylinder.

[0027] In one or some optional embodiments, the circulation outer cylinder, the circulation inner cylinder, the upper cover, the upper baffle, the lower cover, and the lower baffle are all made of non-magnetic materials.

[0028] In one or some optional embodiments, the communication device for drilling further includes: a second sealing member;

[0029] The second sealing member is sealed between the outer wall of the upper cover and the inner wall of the circulation inner drum.

[0030] In one or some optional embodiments, the communication device for drilling further includes a limiting bolt;

[0031] One end of the probe tube away from the conversion joint is fixed to the inner circulation cylinder through the limiting bolt.

[0032] In one or some optional embodiments, the thermal insulation material is a non-magnetic insulating material.

[0033] In one or some optional embodiments, the heat insulating material is heat-absorbing silicone grease.

[0034] The embodiments of the present invention achieve at least the following technical effects:

[0035] The drilling communication device provided in this embodiment is suitable for high-temperature communication operations. The insulation material between the inner and outer circulation tubes absorbs heat from the tubes, maintaining a constant temperature within the probe tube. Simultaneously, drilling fluid flows through the inlet and out the outlet, helping to lower the probe tube temperature. This two-step cooling mechanism keeps the probe tube temperature within the operating range, maintaining stable operating performance and achieving high-temperature communication.

[0036] The drilling connection device provided in this embodiment features a probe tube connected to a tip outside the circulation cylinder via a tip connecting rod. The tip and tip connecting rod ensure a secure connection between the probe tube and the logging bridle. A retaining ring and an elastic portion provide positional control, ensuring reliable transmission of probe signal signals to a surface modem. The surface modem then decodes and calculates the relative position between the probe tube and the strong magnetic connector, which serves as the basis for adjusting the MWD trajectory while drilling.

[0037] The connecting device for drilling provided in this embodiment has a circulation outer cylinder, a circulation inner cylinder, an upper cover, an upper baffle, a lower cover and a lower baffle of the circulation cylinder, all of which are made of non-magnetic materials, which can avoid electromagnetic interference to the probe and ensure that the probe can work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 It is a structural schematic diagram of a communication device for drilling provided by an embodiment of the present invention.

[0040] In the figure: 1-circulation outer cylinder; 2-circulation inner cylinder; 3-insulation material; 4-probe; 5-conversion joint; 6-upper cover; 7-upper baffle; 8-lower cover; 9-lower baffle; 10-liquid outlet; 11-first sealing member; 12-retaining ring; 13-elastic part; 14 top connecting rod; 15 second sealing member; 16 liquid inlet; 17-top; 18-limiting bolt. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0042] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent like or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0043] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0045] An embodiment of the present invention provides a communication device for drilling, which is suitable for high-temperature communication operations.

[0046] Reference Figure 1 As shown, the device includes: a circulation cylinder, an upper cover 6, a probe 4 arranged in the circulation cylinder, a top 17 arranged outside the circulation cylinder, and a top connecting rod 14 connecting the probe 4 and the top 17;

[0047] The circulation cylinder has a front opening, and the upper cover 6 blocks the front opening;

[0048] The circulation cylinder comprises an inner circulation cylinder and an outer circulation cylinder, and a heat insulating material is filled between the inner circulation cylinder and the outer circulation cylinder;

[0049] The upper cover 6 is provided with at least one liquid inlet 16 , and the bottom of the circulation cylinder is provided with at least one liquid outlet 10 .

[0050] In this embodiment of the present invention, the circulation cylinder is constructed as a two-layered structure consisting of an inner and outer layer. Insulating material is placed between the two layers to absorb heat within the circulation cylinder and maintain a constant temperature within the probe tube 4. A liquid inlet 16 is provided in the upper cover 6, and a liquid outlet 10 is provided at the bottom of the circulation cylinder. Drilling fluid flows through the inlet 16 and out through the outlet 10, helping to lower the temperature of the probe tube 4 through the circulation of the drilling fluid. This two-step cooling measure keeps the probe tube temperature within the operating range and maintains stable operating performance, enabling uninterrupted and stable two-well connection operations in high-temperature environments.

[0051] The upper cover 6 is provided with an axially extending first connecting rod passageway. The connecting rod 14 extends through the passageway, with the outer wall of the connecting rod 14 closely fitting within the inner wall of the passageway. The connecting rod 14 is positioned within the passageway and closely fits within the passageway, preventing it from wobbling during operation. The connecting rod 14 is electrically insulated and tightly fitted to the passageway to prevent short circuits.

[0052] In an embodiment of the present invention, the communication device for drilling is provided, further comprising: a conversion joint 5;

[0053] The conversion joint 5 is connected to the probe 4 and the upper cover 6 respectively;

[0054] The adapter 5 is provided with an axially extending second connecting rod channel, through which the top connecting rod 14 passes, and the outer wall of the top connecting rod 14 is tightly fitted with the inner wall of the second connecting rod channel. The top connecting rod 14 and the second connecting rod channel are electrically insulated and tightly fitted to prevent short circuits.

[0055] The upper cover 6 seals the open end of the inner circulation cylinder, and the conversion joint 5 is suitable for converting the sizes of the probe tube 4 and the upper cover 6, so as to reliably connect the probe tube 4 and the upper cover 6 together.

[0056] The top connecting rod 14 extends from the outside of the inner circulation cylinder through the first connecting rod channel and the second connecting rod channel to the inner circulation cylinder, and the top connecting rod 14 fits tightly with the first connecting rod channel and the second connecting rod channel, which can ensure that the top connecting rod can reliably contact the probe 4 and prevent the top connecting rod 14 from shaking during the connection operation.

[0057] In an embodiment of the present invention, at least a portion of the area of ​​the top connecting rod 14 located in the circulation cylinder is an elastic portion 13, and the elastic portion 13 is placed outside the first connecting rod channel and the second connecting rod channel. By providing the elastic portion 13, the impact force on the top connecting rod 14 when it contacts the probe 4 can be reduced, and at the same time, reliable contact between the top connecting rod 14 and the probe 4 can be ensured. As a specific embodiment, the elastic portion 13 is configured as a spring. Of course, in the embodiment of the present invention, the spring is only an example of the present invention. Based on the above records and detailed descriptions in the prior art, those skilled in the art can also use other elastic components as the elastic portion of the top connecting rod 14 in the embodiment of the present invention. In this regard, no specific limitation is made in the embodiment of the present invention.

[0058] In this embodiment of the present invention, the probe tube 4 includes a housing cavity with internal threads, and the adapter 5 has external threads, which are threadedly connected to the probe tube 4. This not only seals the open end of the inner circulation barrel but also stably positions the probe tube 4 and the top connecting rod 14 within the inner circulation barrel, preventing the drilling connection device from shaking during connection operations, which could cause poor contact between the top connecting rod 14 and the probe tube 4.

[0059] In the embodiment of the present invention, the probe tube 4 further includes a connection hole; the connection hole is connected to the accommodating cavity;

[0060] The top connecting rod 14 is connected to the wiring hole. Based on this, the top connecting rod 14 is connected to the probe 4 through the wiring hole to achieve the transmission of power supply signal and carrier signal.

[0061] In the embodiment of the present invention, the communication device for drilling further includes a retaining ring 12;

[0062] The elastic portion 13 is positioned within the accommodating cavity, and the retaining ring 12 is sleeved over the elastic portion 13, with its ends contacting the bottom of the adapter 5 and the bottom of the accommodating cavity, respectively. The retaining ring 12 provides axial fixation, preventing the center connecting rod 14 from axially moving within the probe tube 4. Those skilled in the art may refer to the detailed description of the prior art for the specific structure and implementation of the retaining ring 12 described in the embodiments of the present invention, and no specific limitations are imposed on this aspect of the present invention.

[0063] In an embodiment of the present invention, the communication device for drilling further includes a first sealing member;

[0064] The first sealing member 11 is sealed between the outer wall of the retaining ring 12 and the inner wall of the accommodating cavity. The first sealing member 11 is provided to seal the retaining ring 12 and the accommodating cavity. As a specific embodiment, the first sealing member 11 may be an O-ring. Of course, the O-ring in the embodiments of the present invention is merely an example. Based on the above description and detailed descriptions in the prior art, those skilled in the art may also use other elements capable of performing a sealing function as the first sealing member 11 in the embodiments of the present invention. This is not specifically limited in the embodiments of the present invention.

[0065] In this embodiment of the present invention, the at least one liquid inlet is provided in multiple locations, evenly distributed radially along the center of the upper cover 6. As a specific embodiment, liquid inlet holes 16 are provided at both ends of the upper cover 6, and liquid outlet holes 10 are provided through the lower baffle 9 and the lower cover 8. The diameter of the outlet hole 10 is twice that of the liquid inlet hole. Drilling fluid flows through the annular space within the inner circulation cylinder and exits the outer circulation cylinder through the lower baffle 9 and the lower cover 8.

[0066] In the embodiment of the present invention, the circulation cylinder further includes an upper baffle 7;

[0067] The inner circulation drum includes a circulation inner drum 2 and a lower baffle 9 that blocks the bottom of the circulation inner drum 2;

[0068] The outer layer circulation drum comprises a circulation outer drum 1 and a lower cover 8 for sealing the bottom of the circulation outer drum 1;

[0069] The liquid outlet 10 passes through the lower baffle 9 and the lower cover 8;

[0070] The upper baffle 7 blocks the top of the circulation inner cylinder 2 and the top of the circulation outer cylinder 1 .

[0071] The upper baffle 7 and lower cover 8 isolate the outer circulation cylinder 1 from the external environment, preventing external heat from entering the outer circulation cylinder. The lower baffle 9 isolates the inner circulation cylinder 2 from the outer circulation cylinder 1 and, with the aid of thermal insulation, prevents heat from entering the inner circulation cylinder 2 and affecting the operation of the probe 5. By providing fluid outlet holes 10 in the lower baffle 9 and lower cover 8, drilling fluid entering through the fluid inlet hole 16 of the upper cover 6 flows through the inner circulation cylinder 2, removing heat from the inner circulation cylinder 2, and exits the inner circulation cylinder 2 and the outer circulation cylinder 1 through the fluid outlet holes 10. The diameter and number of the fluid inlet holes 16 and fluid outlet holes 10 can be adjusted according to the downhole environment in which the drilling communication device is located.

[0072] In an embodiment of the present invention, the circulating outer cylinder 1, the circulating inner cylinder 2, the upper cover 6, the upper baffle 7, the lower cover 8, and the lower baffle 9 are all made of non-magnetic materials. During high-temperature connection operations, the probe 4 needs to receive the electromagnetic signal of the strong magnetic connector. The circulating outer cylinder 1, the circulating inner cylinder 2, the upper cover 6, the upper baffle 7, the lower cover 8, and the lower baffle 9 are all made of non-magnetic materials to avoid electromagnetic interference and ensure that the probe 4 can work normally. As a specific embodiment, the circulating outer cylinder 1 and the circulating inner cylinder 2 can be made of non-magnetic materials such as non-magnetic drill rods or titanium alloys. Of course, in the embodiment of the present invention, titanium alloy is only an example of the present invention. Based on the above records and detailed descriptions in the prior art, those skilled in the art can also use other materials as the non-magnetic materials in the embodiment of the present invention as the materials of the circulating outer cylinder 1, the circulating inner cylinder 2, the upper cover 6, the upper baffle 7, the lower cover 8, and the lower baffle 9. In this regard, no specific limitation is made in the embodiment of the present invention.

[0073] In the embodiment of the present invention, the communication device for drilling further includes: a second sealing member 15;

[0074] The second sealing member 15 is hermetically connected between the outer wall of the upper cover 6 and the inner wall of the circulation inner drum 2. The second sealing member 15 is provided to seal the upper cover 6 and the circulation inner drum 2. In a specific embodiment, the second sealing member 15 may be an O-ring. Of course, the O-ring used in the embodiments of the present invention is merely an example. Based on the above description and detailed descriptions of the prior art, those skilled in the art may also employ other sealing elements as the second sealing member 15 in the embodiments of the present invention. This is not specifically limited in the embodiments of the present invention.

[0075] In the embodiment of the present invention, the communication device for drilling further includes a limit bolt 18;

[0076] The end of the probe tube 4 away from the conversion joint 5 is fixed to the inner circulation cylinder by the limiting bolt 18. The upper end of the probe tube 4 is fixed to the upper part of the inner circulation cylinder by the conversion joint 5 and the upper cover 6, and the lower end of the probe tube 4 is fixed to the bottom of the inner circulation cylinder by the limiting bolt 18. Thus, the probe tube 4 is fixed in the inner circulation cylinder. Of course, in the embodiment of the present invention, the limiting bolt is only an example of the present invention. Based on the above records and detailed descriptions in the prior art, those skilled in the art may also use other components as the fixing components of the probe tube 4 in the embodiment of the present invention. In this regard, no specific limitation is made in the embodiment of the present invention.

[0077] In an embodiment of the present invention, the thermal insulation material is a non-magnetic insulating material. As a specific embodiment, the thermal insulation material can be heat-absorbing silicone grease. Of course, in the embodiment of the present invention, heat-absorbing silicone grease is merely an example of the present invention. Based on the above records and detailed descriptions in the prior art, those skilled in the art may also use other materials as the non-magnetic insulating material in the embodiment of the present invention as the thermal insulation material in the circulation cylinder. In this regard, no specific limitation is made in the embodiment of the present invention.

[0078] Before lowering the drilling connection device into the wellbore, align the tip 17 with the core shaft of the logging bridle joint and connect it to the surface modem via a logging cable. The logging cable supplies power and control signals to the probe 4, transmitting the signals collected by the probe 4 to the surface. The tip 17 and tip connecting rod 14 ensure a secure connection between the probe 4 and the logging bridle, and are retained in place by the retaining ring 12 and elastic portion 13. The logging cable.

[0079] In order to more clearly illustrate the drilling connection device provided by the embodiment of the present invention, the construction process method of the drilling connection device during high-temperature connection operation is described in detail below:

[0080] First, the high-temperature resistant communication instrument is lowered into the target well to the target well depth via the logging winch.

[0081] Next, the lower oil pipe is threadedly connected to the oil pipe buckles of the outer circulation tube and the inner circulation tube to establish a drilling fluid circulation system.

[0082] Next, turn on the ground modem power supply, supply DC power to the probe 4 through the logging cable, start the data acquisition software, and control the probe 4 to collect signals; at the same time, insert a strong magnetic connector from the horizontal well to the bottom of the well, and the probe 4 detects the magnetic field of the strong magnetic connector and uploads the collected signals through the logging cable.

[0083] Finally, the two wells were successfully connected and the instrument was removed.

[0084] The working principle of this method is to connect a strong magnetic connector between the drill bit and the motor of the drilling tool. During drilling, the drill bit rotates, generating an alternating magnetic field. The probe tube 4 senses this alternating magnetic field within a certain range and transmits the measured signal to the surface system. The surface modem then decodes and calculates the relative position of the probe tube and the strong magnetic connector, which serves as the basis for MWD trajectory adjustment while drilling.

[0085] During high-temperature connection operations, the heat-absorbing silicone grease between the outer and inner circulation tubes absorbs heat from the wellbore, maintaining a constant temperature in the probe tube 4. Simultaneously, drilling fluid flows through the inlet and out the outlet, helping to lower the temperature of the probe tube 4 through the circulation of the drilling fluid. This two-step cooling process keeps the probe tube temperature within the operating range, maintaining stable operating performance and achieving high-temperature connection.

[0086] Those skilled in the art may refer to the detailed description in the prior art for the specific structure and implementation of the logging bridle described in the embodiment of the present invention, and no specific limitation is made in the embodiment of the present invention.

[0087] In this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or apparatus. The orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0088] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention is not limited to any single aspect, nor to any single embodiment, nor to any combination and / or permutation of these aspects and / or embodiments. Each aspect and / or embodiment of the present invention can be used alone or in combination with one or more other aspects and / or other embodiments.

[0089] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A communication device for drilling, characterized in that: include: A circulation cylinder, an upper cover (6), a conversion joint (5), a probe (4) disposed within the circulation cylinder, a top (17) disposed outside the circulation cylinder, and a top connecting rod (14) connecting the probe (4) and the top (17); The circulation cylinder has a front end opening, and the upper cover (6) blocks the front end opening; The circulation cylinder comprises an inner circulation cylinder and an outer circulation cylinder, and a heat insulating material (3) is filled between the inner circulation cylinder and the outer circulation cylinder; The upper cover (6) is provided with at least one liquid inlet hole (16), and the bottom of the circulation cylinder is provided with at least one liquid outlet hole (10); The upper cover (6) is provided with an axially penetrating first connecting rod channel, the top connecting rod (14) passes through the first connecting rod channel, and the outer wall of the top connecting rod (14) is tightly fitted with the inner wall of the first connecting rod channel; The conversion joint (5) is connected to the probe (4) and the upper cover (6) respectively; The conversion joint (5) is provided with an axially penetrating second connecting rod channel, the top connecting rod (14) passes through the second connecting rod channel, and the outer wall of the top connecting rod (14) is tightly fitted with the inner wall of the second connecting rod channel.

2. A communication device for drilling according to claim 1, characterized in that: At least a portion of the area of ​​the top connecting rod (14) located in the circulation cylinder is an elastic portion (13), and the elastic portion (13) is placed outside the first connecting rod channel and the second connecting rod channel.

3. A communication device for drilling according to claim 2, characterized in that: The probe tube (4) comprises a receiving cavity, the receiving cavity is provided with an internal thread, the conversion joint (5) is provided with an external thread, and the conversion joint is threadedly connected to the probe tube (4).

4. A communication device for drilling according to claim 3, characterized in that: The probe tube (4) further comprises a wiring hole; the wiring hole is connected to the accommodating cavity; The top connecting rod (14) is connected to the wiring hole.

5. A communication device for drilling according to claim 3, characterized in that: Also includes a retaining ring (12); The elastic portion (13) is placed in the accommodating cavity, the retaining ring (12) is sleeved on the elastic portion (13), and two ends of the retaining ring (12) are in contact with the bottom of the conversion joint (5) and the bottom of the accommodating cavity respectively.

6. A communication device for drilling according to claim 5, characterized in that: Also included is a first seal; The first sealing member (11) is sealed between the outer wall of the retaining ring (12) and the inner wall of the accommodating cavity.

7. The communication device for drilling according to claim 5, characterized in that: The elastic portion (13) is configured as a spring.

8. The communication device for drilling according to claim 1, characterized in that: There are a plurality of at least one liquid inlet hole (16), and the plurality of liquid inlet holes (16) are evenly distributed along the central radial direction of the upper cover (6).

9. A communication device for drilling according to any one of claims 1 to 8, characterized in that: The circulation cylinder further includes an upper baffle (7); The inner layer circulation drum comprises a circulation inner drum (2) and a lower baffle (9) for blocking the bottom of the circulation inner drum (2); The outer layer circulation cylinder comprises a circulation outer cylinder (1) and a lower cover (8) for sealing the bottom of the circulation outer cylinder (1); The liquid outlet hole passes through the lower baffle (9) and the lower cover (8); The upper baffle (7) blocks the top of the circulating inner cylinder (2) and the top of the circulating outer cylinder (1).

10. The communication device for drilling according to claim 9, characterized in that: The circulating outer cylinder (1), the circulating inner cylinder (2), the upper cover (6), the upper baffle (7), the lower cover (8), and the lower baffle (9) are all made of non-magnetic materials.

11. The communication device for drilling according to claim 9, characterized in that: Also includes: a second sealing member (15); The second sealing member (15) is sealed between the outer wall of the upper cover (6) and the inner wall of the circulation inner drum (2).

12. The communication device for drilling according to claim 9, characterized in that: Also included is a stop bolt (18); One end of the probe tube (4) away from the conversion joint (5) is fixed to the inner circulation cylinder via the limiting bolt (18).

13. The communication device for drilling according to claim 9, characterized in that: The thermal insulation material (3) is a non-magnetic insulating material.

14. The communication device for drilling according to claim 13, characterized in that: The heat insulating material (3) is heat-absorbing silicone grease.

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