Detachable and repairable intelligent drill pipe joint structure
Patent Information
- Application Number
- CN202522614337.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-10
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-12-10
AI Technical Summary
目前现有技术的制造和维护成本太高，无法进行修扣和拆卸，其会限制智能钻杆的大量使用，因此需要一种方便制造和维修、方便修扣和拆卸、经济实惠的智能钻杆
[0019]本申请的有益效果为：本发明结构简单，使用方便，智能钻杆接头及其他各部件可拆卸、方便维护，公接头与母接头间采用锥形螺纹连接，既提高了连接强度及密封性能，还能减小整个结构长度，同时可实现公接头与母接头的快速对接。环形插头和环形插座通过采用陶瓷材料、金属材料进行绝缘涂层处理，并且其内部可设置导电线芯，导电线芯一端分别与公头导电触环和母头导电触环相接触，另一端制成连接头后与外部线缆相连，从而通过公头导电触环和母头导电触环的紧密接触，实现电信号的传递；同时设计了多道密封共同保证结构内外钻井液、泥浆等其他杂质的侵入而影响供电和数据传输。实现了地面向井下进行供电和地面与井底之间的高速、实时、双向海量数据安全高效地传输，既能够对井下仪器和设备进行供电，同时将井下测量数据和地面反馈数据实时高速互传，使作业人员能够及时精准地掌握井下钻头轨迹和地层情况，从而显著提高钻井作业的安全性、提升钻井效率、减少起下钻时间、延长钻具寿命、缩短钻井作业周期、降低综合作业成本、提升油气采收率。同时其组件，如公接头、环形插头、公头导电触环；母接头、环形插座、母头导电触环均可拆卸，极大提升了后期维护的便利性，降低了使用成本。
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Figure CN224885515U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of drill pipe technology for oil and gas development, and in particular to a detachable and maintainable intelligent drill pipe joint structure. Background Technology
[0002] Intelligent drill pipe is a cutting-edge technology developed to address pain points in traditional drilling processes, such as slow data transmission, small data volume, and delayed decision-making. Its core concept is to upgrade the drill pipe from a simple transmission conduit into a high-speed information line. By embedding cables within the drill pipe, high-speed, real-time, bidirectional data transmission between the well and the surface is achieved. Currently, the manufacturing and maintenance costs of existing technologies are too high, and repair and disassembly are not possible, limiting the widespread use of intelligent drill pipe. Therefore, there is a need for an intelligent drill pipe that is easy to manufacture and maintain, easy to repair and disassemble, and cost-effective. Summary of the Invention
[0003] Based on the above, this application provides a detachable and maintainable intelligent drill pipe joint structure.
[0004] Specifically, this application is achieved through the following technical solution:
[0005] A detachable and maintainable intelligent drill pipe joint structure includes a male joint and a female joint that have a connecting structure and are mutually matched. The male joint has a connecting section and an installation section, and the outer diameter of the connecting section is larger than the outer diameter of the installation section.
[0006] The mounting section of the male connector is detachably fitted with a ring-shaped plug. A male conductive contact ring is provided on the end face of the ring-shaped plug away from the male connector. The male connector and the ring-shaped plug have a through-type male cable channel.
[0007] One end of the female connector is detachably fitted with a ring socket adapted to the ring plug. The end face of the ring socket away from the female connector has a female conductive contact ring. The female connector and the ring socket have a through female cable channel.
[0008] The male conductive contact ring is connected to the annular plug, and the female conductive contact ring is connected to the annular socket using an interference fit.
[0009] When the male connector and the female connector are in a connected state, the end faces of the male conductive contact ring and the female conductive contact ring are pressed into contact.
[0010] Furthermore, the connection structure is a threaded structure, with the outer wall of the connecting section of the male connector having an external thread, and the inner wall of the female connector having an internal thread that mates with the external thread of the male connector.
[0011] Furthermore, the annular plug is provided with three plug positioning posts and one hollow plug positioning post embedded on one end face of the male connector. Correspondingly, the male connector is provided with three male connector positioning holes. The three plug positioning posts are adapted to be inserted into the three male connector positioning holes, and the hollow plug positioning post is adapted to be inserted into the male connector cable channel.
[0012] Furthermore, the annular socket is provided with three socket positioning posts and one hollow socket positioning post on one end face of the female connector. Correspondingly, the female connector is provided with three female head positioning holes. The three socket positioning posts are adapted to be inserted into the three female head positioning holes, and the hollow socket positioning post is adapted to be inserted into the female head cable channel.
[0013] Furthermore, the annular plug has at least two plug retaining rings on the end face opposite to the male connector to restrict the axial movement of the annular plug; the annular socket has at least two socket retaining rings on the end face opposite to the female connector to restrict the axial movement of the annular socket.
[0014] Furthermore, at least two plug contact ring positioning posts are fixed on the end face of the male conductive contact ring near the annular plug, and each plug contact ring positioning post is embedded in the annular plug; at least two socket contact ring positioning posts are fixed on the end face of the female conductive contact ring near the annular socket, and each socket contact ring positioning post is embedded in the annular socket.
[0015] Furthermore, each of the plug contact ring positioning posts is provided with a contact ring compression spring at one end embedded in the annular plug, and / or each of the socket contact ring positioning posts is provided with a contact ring compression spring at one end embedded in the annular socket. In the assembled state, each of the contact ring compression springs is in a compressed state.
[0016] Furthermore, the bottom of the annular plug has at least two plug removal holes, and the bottom of the annular socket has at least two socket removal holes.
[0017] Furthermore, at least one set of first sealing rings are provided at both ends of the external thread of the male connector, and / or at least one set of second sealing rings are provided on the inner and outer walls of the end of the annular plug away from the annular socket.
[0018] Furthermore, the outer wall of the mounting section of the male connector is provided with at least one set of third sealing rings, and / or the outer wall of the annular plug near the annular socket is provided with at least one set of fourth sealing rings, and / or the outer wall of the annular socket is provided with at least one set of fifth sealing rings.
[0019] The beneficial effects of this application are as follows: The invention has a simple structure and is easy to use. The intelligent drill pipe connector and other components are detachable and easy to maintain. The male and female connectors are connected by a tapered thread, which not only improves the connection strength and sealing performance but also reduces the overall structural length. At the same time, it can achieve quick docking between the male and female connectors. The ring plug and ring socket are treated with ceramic and metal materials for insulation coating, and conductive cores can be set inside. One end of the conductive core contacts the male and female conductive contact rings respectively, and the other end is made into a connector to connect to the external cable. Thus, the transmission of electrical signals is achieved through the tight contact between the male and female conductive contact rings. At the same time, multiple seals are designed to prevent the intrusion of drilling fluid, mud, and other impurities inside and outside the structure from affecting power supply and data transmission. This system enables secure and efficient power supply from the surface to the wellbore, as well as high-speed, real-time, bidirectional transmission of massive amounts of data between the surface and the wellbore. It provides power to downhole instruments and equipment while simultaneously transmitting downhole measurement data and surface feedback data in real-time at high speed. This allows operators to accurately and promptly monitor the downhole drill bit trajectory and formation conditions, significantly improving drilling safety, increasing drilling efficiency, reducing tripping time, extending drill string life, shortening drilling cycles, lowering overall operating costs, and enhancing oil and gas recovery. Furthermore, its components, such as male connectors, ring plugs, and male conductive contact rings; and female connectors, ring sockets, and female conductive contact rings, are all detachable, greatly improving the convenience of later maintenance and reducing operating costs.
[0020] In summary, compared with existing smart drill pipes, the joint structure of this application has better sealing performance, can be disassembled and repaired, is more convenient to operate, can be recycled, and has lower overall and maintenance costs. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of a detachable and maintainable intelligent drill pipe joint structure provided in one embodiment of this application;
[0023] Figure 2 This is a partial schematic diagram of the male connector of a detachable and maintainable intelligent drill pipe joint structure provided in an embodiment of this application;
[0024] Figure 3 This is a partial schematic diagram of the female connector of a detachable and maintainable intelligent drill pipe joint structure provided in an embodiment of this application;
[0025] Figure 4 This is a schematic diagram of the sealing form of a detachable and maintainable intelligent drill pipe joint structure provided in an embodiment of this application.
[0026] In the picture:
[0027] 1. Male connector; 101. Male cable channel; 102. Male positioning hole; 103. First sealing ring; 104. Third sealing ring; 105. Second sealing ring; 106. Connecting section; 107. Mounting section; 2. Female connector; 201. Female cable channel; 202. Female positioning hole; 3. Ring plug; 301. Male conductive contact ring; 302. Plug contact ring positioning post; 303. Contact ring compression spring; 304. Plug positioning post; 305. Plug hollow positioning post; 306. Plug removal hole; 307. Fourth sealing ring; 4. Ring socket; 401. Female conductive contact ring; 402. Socket contact ring positioning post; 403. Socket positioning post; 404. Socket hollow positioning post; 405. Socket removal hole; 406. Fifth sealing ring; 5. Cable; 6. Plug retainer; 7. Socket retainer. Detailed Implementation
[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present application, not the entire structure.
[0029] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0031] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are merely used for descriptive distinction and have no special meaning.
[0032] like Figure 1 As shown in the figure, this embodiment provides a detachable and maintainable intelligent drill pipe connector structure, including a male connector and a female connector with a connecting structure and mutual matching. The male connector has a connecting section and an installation section, with the outer diameter of the connecting section being larger than the outer diameter of the installation section. A ring plug is detachably embedded in the installation section of the male connector. A male conductive contact ring is provided on the end face of the ring plug away from the male connector. The male connector and the ring plug have a through male cable channel, through which a cable can pass and connect to the male conductive contact ring. One end of the female connector is detachably embedded with a ring socket adapted to the ring plug. A female conductive contact ring is provided on the end face of the ring socket away from the female connector. The female connector and the ring socket have a through female cable channel, through which a cable can pass and connect to the female conductive contact ring. When the male and female connectors are in the connected state, the end faces of the male and female conductive contact rings are pressed together in contact. Both the male and female conductive contact rings are made of highly conductive metal materials, and conduction is achieved when their end faces are pressed together.
[0033] Specifically, in this embodiment, the male connector has a threaded connection structure. An external thread is provided on the outer wall of the male connector's connection section, and an internal thread that mates with the male connector's external thread is provided on the inner wall of the female connector. The diameter of the connection section gradually decreases along the axial direction. Both the external and internal threads are matching tapered threads, which improves the connection strength and the sealing performance at the connection between the male and female connectors. The male conductive contact ring and the ring plug are connected by an interference fit, as are the female conductive contact ring and the ring socket. This facilitates the assembly and disassembly of the male conductive contact ring and the ring plug, as well as the female conductive contact ring and the ring socket, and makes future maintenance easier.
[0034] like Figure 2As shown, to better limit the radial movement of the ring plug, in one embodiment, three plug positioning posts and one hollow plug positioning post are evenly embedded on one end face of the ring plug connecting to the male connector. The ends of the three plug positioning posts facing the male connector are respectively inserted into the male connector's corresponding male positioning holes. The ends of the three plug positioning posts facing the ring plug can be integrated with the ring plug, or they can be welded and fixedly connected to the end face of the ring plug; alternatively, corresponding male positioning holes can be opened on the end face of the ring plug, allowing the plug positioning posts to be inserted into the male positioning holes. The two ends of the hollow plug positioning post can be adapted to be inserted into the male cable channel of the ring plug and the male connector, respectively. After the ring plug is installed onto the male connector, the hollow plug positioning post and the male cable channel are connected.
[0035] like Figure 3 As shown, to better limit the radial movement of the ring socket, in one embodiment, three socket positioning posts and one hollow socket positioning post are evenly embedded on one end face of the ring socket connecting to the female connector. The ends of the three socket positioning posts facing the female connector are respectively inserted into the corresponding female head positioning holes on the female connector. The ends of the three socket positioning posts facing the ring socket can be integrated with the ring socket, or they can be welded and fixedly connected to the end face of the ring socket; or corresponding female head positioning holes can be opened on the end face of the ring socket, so that the socket positioning posts are inserted into the female head positioning holes. The two ends of the hollow socket positioning post can be adapted to be inserted into the female head cable channel of the ring socket and the female connector respectively. After the ring socket is installed to the female connector, the hollow socket positioning post and the female head cable channel are connected.
[0036] To better restrict the axial movement of the ring plug, at least two plug retaining rings are provided on the end face of the ring plug facing away from the male connector. To better restrict the axial movement of the ring socket, at least two socket retaining rings are provided on the end face of the ring socket facing away from the female connector. In a preferred embodiment, both the plug retaining rings and the socket retaining rings are two in number and symmetrically arranged.
[0037] like Figure 2-3 As shown, the male conductive contact ring has at least two plug contact ring positioning posts integrally formed or welded to the end face near the annular plug. Each plug contact ring positioning post is embedded in a corresponding plug contact ring positioning hole (not shown in the figure) opened in the annular plug to better restrict the radial movement of the male conductive contact ring. The female conductive contact ring has at least two socket contact ring positioning posts integrally formed or welded to the end face near the annular socket. Each socket contact ring positioning post is embedded in a corresponding socket contact ring positioning hole (not shown in the figure) opened in the annular socket. In a preferred embodiment, there are four plug contact ring positioning posts and four socket contact ring positioning posts evenly arranged. One plug contact ring positioning post and one socket contact ring positioning post are respectively inserted into the male cable channel of the male connector and the female cable channel of the female connector for connection with the cable.
[0038] To ensure a tighter contact between the male and female conductive contacts, a contact ring compression spring is provided at the end of each plug contact ring positioning post that is embedded in the annular plug, and the contact ring compression spring is placed within the plug contact ring positioning hole; and / or a contact ring compression spring is also provided at the end of each socket contact ring positioning post that is embedded in the annular socket, and the contact ring compression spring is placed within the socket contact ring positioning hole. In the assembled state, each contact ring compression spring is in a compressed state.
[0039] In another embodiment, the bottom of the ring plug is provided with at least two plug removal holes, and the bottom of the ring socket is provided with at least two socket removal holes, so as to facilitate the disassembly and assembly of the ring plug and the ring socket, and to facilitate subsequent replacement and maintenance operations.
[0040] like Figure 4 As shown, at least one set of first sealing rings is provided at both ends of the male connector's external thread, forming the first and second seals to prevent external drilling fluid from entering the structure. At least one set of second sealing rings is provided on the inner and outer walls of the end of the annular plug away from the annular socket, together forming the third seal to prevent external drilling fluid from entering the structure. In this embodiment, preferably, there are two sets of both the first and second sealing rings, and both are O-rings.
[0041] The outer wall of the male connector's mounting section is provided with at least one set of third sealing rings, forming the first seal to prevent drilling fluid from entering the structure. The outer wall of the annular plug near the annular socket end is provided with at least one set of fourth sealing rings, and the outer wall of the annular socket is provided with at least one set of fifth sealing rings, together forming the second seal to prevent drilling fluid from entering the structure. In this embodiment, preferably, there are two sets of each of the third, fourth, and fifth sealing rings, and all of them are O-rings.
[0042] The working principle of this application is as follows: A ring plug is sequentially installed onto the male connector, and the male conductive contact ring is installed onto the ring plug. A cable is pre-installed, with one end soldered to the male conductive contact ring or abutting against it via a plug contact ring positioning post. The other end of the cable is led out through the male cable channel and connected to an external cable. Next, a ring socket is sequentially installed onto the female connector, and the female conductive contact ring is installed onto the ring socket. A cable is pre-installed, with one end soldered to the female conductive contact ring or abutting against it via a socket contact ring positioning post. The other end of the cable is led out through the female cable channel and connected to an external cable. Multiple sets of O-ring seals are fitted at each connection point. The male and female connectors are then connected via threaded engagement. At this point, circuit and data information are transmitted through the cable from the male cable channel to the metal male conductive contact ring on the ring plug. The male conductive contact ring conducts electricity through contact with the metal female conductive contact ring, and then transmits the information to the connected external cable via the cable connected to the female conductive contact ring. Through the combination of several sets of male and female connectors, the signal can be transmitted to the male and female connectors of the next intelligent drill rod, thus forming a series circuit and data signal transmission for all intelligent drill rods. At the same time, the setting of multiple inner and outer sealing rings ensures the safety and reliability of power supply and data signal transmission for the intelligent drill rod.
[0043] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.
Claims
1. A detachable and maintainable intelligent drill pipe joint structure, comprising a male connector and a female connector having a connecting structure and being mutually matched, characterized in that: The male connector has a connecting section and a mounting section, wherein the outer diameter of the connecting section is larger than the outer diameter of the mounting section; The mounting section of the male connector is detachably fitted with a ring-shaped plug. A male conductive contact ring is provided on the end face of the ring-shaped plug away from the male connector. The male connector and the ring-shaped plug have a through-type male cable channel. One end of the female connector is detachably fitted with a ring socket adapted to the ring plug. The end face of the ring socket away from the female connector has a female conductive contact ring. The female connector and the ring socket have a through female cable channel. The male conductive contact ring is connected to the annular plug, and the female conductive contact ring is connected to the annular socket using an interference fit. When the male connector and the female connector are in a connected state, the end faces of the male conductive contact ring and the female conductive contact ring are pressed into contact.
2. The detachable and maintainable intelligent drill pipe joint structure according to claim 1, characterized in that: The connection structure is a threaded structure. The outer wall of the connecting section of the male connector is provided with an external thread, and the inner wall of the female connector is provided with an internal thread that mates with the external thread of the male connector.
3. The detachable and maintainable intelligent drill pipe joint structure according to claim 1, characterized in that: The annular plug is connected to one end face of the male connector, which is provided with three plug positioning posts and one hollow plug positioning post. Correspondingly, the male connector has three male positioning holes. The three plug positioning posts are adapted to be inserted into the three male positioning holes, and the hollow plug positioning post is adapted to be inserted into the male cable channel.
4. The detachable and maintainable intelligent drill pipe joint structure according to claim 1, characterized in that: The ring socket is provided with three socket positioning posts and one hollow socket positioning post on one end face of the female connector. Correspondingly, the female connector is provided with three female connector positioning holes. The three socket positioning posts are adapted to be inserted into the three female connector positioning holes, and the hollow socket positioning post is adapted to be inserted into the female connector cable channel.
5. The detachable and maintainable intelligent drill pipe joint structure according to claim 1, characterized in that: The annular plug has at least two plug retaining springs on the end face opposite to the male connector to restrict the axial movement of the annular plug; the annular socket has at least two socket retaining springs on the end face opposite to the female connector to restrict the axial movement of the annular socket.
6. The detachable and maintainable intelligent drill pipe joint structure according to claim 1, characterized in that: The male conductive contact ring has at least two plug contact ring positioning posts fixed on its end face near the annular plug, and each plug contact ring positioning post is embedded in the annular plug; the female conductive contact ring has at least two socket contact ring positioning posts fixed on its end face near the annular socket, and each socket contact ring positioning post is embedded in the annular socket.
7. The detachable and maintainable intelligent drill pipe joint structure according to claim 6, characterized in that: Each of the plug contact ring positioning posts is provided with a contact ring compression spring at one end where it is embedded in the annular plug, and / or each of the socket contact ring positioning posts is provided with a contact ring compression spring at one end where it is embedded in the annular socket. In the assembled state, each of the contact ring compression springs is in a compressed state.
8. The detachable and maintainable intelligent drill pipe joint structure according to claim 1, characterized in that: The bottom of the ring-shaped plug has at least two plug removal holes, and the bottom of the ring-shaped socket has at least two socket removal holes.
9. The detachable and maintainable intelligent drill pipe joint structure according to claim 2, characterized in that: The male connector has at least one set of first sealing rings at both ends of its external thread, and / or the inner and outer walls of the annular plug at the end away from the annular socket have at least one set of second sealing rings.
10. The detachable and maintainable intelligent drill pipe joint structure according to claim 1, characterized in that: The outer wall of the mounting section of the male connector is provided with at least one set of third sealing rings, and / or the outer wall of the annular plug near the annular socket is provided with at least one set of fourth sealing rings, and / or the outer wall of the annular socket is provided with at least one set of fifth sealing rings.