Conductive wire-passing joint structure of well drilling slip ring

Abstract

The utility model provides a conductive wire-passing joint structure of a well drilling slip ring. A male joint and a female joint ensure that a first-stage sealing surface is not ground in a joint assembly process through a joint guiding and righting structure; the male joint and the female joint are in threaded screwing connection through a drill rod, hard contact of an upper circular bead and a lower circular bead is achieved through threaded screwing to achieve metal hard sealing, main sealing of the male joint and the female joint is achieved through a first-stage sealing piece O ring, auxiliary sealing of the male joint and the female joint is achieved through a second-stage sealing piece O ring, and sealing insulation connectors are arranged on the male joint and the female joint respectively. Wire holes are arranged in the male joint and the female joint, and conduction of the sealing insulation connector is realized through the metal elastic contact slip ring. The connector is simple in structure, high-speed real-time data transmission of the drill rod and power supply to underground instruments can be achieved on the premise that electric power and signal transmission is guaranteed, and the bottleneck of data transmission and underground power supply in the current drilling informatization and intelligentization process can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wire harnesses, and in particular relates to a drilling slip ring conductive wire joint structure. Background Art

[0002] Oil drilling presents numerous challenges stemming from heterogeneity, uncertainty, non-structural nature, and non-quantitative nature. Addressing these "black box" engineering issues urgently requires information technology, intelligent technology, and contemporary high-end science and technology. Intelligent drilling theory and technology will rise to the challenge and develop rapidly. Oil drilling, completion, and production are entering a phase of informatization, intelligence, and automation, and are experiencing rapid growth. With the expansion of offshore oil and gas resources in my country and the increasing demand for developing complex onshore oil and gas fields and difficult-to-recover and difficult-to-produce reserves, underbalanced drilling of complex well structures (horizontal wells, extended reach wells, and multilateral wells) and gas drilling are steadily developing. The growing development of modern rotary steerable drilling technology, advanced geosteering drilling based on logging while drilling and seismic while drilling, and downhole diagnostics and control of drilling dynamic parameters are increasingly making wireless measurement while drilling technologies like mud pulse incapable of meeting the requirements of these new drilling technologies.

[0003] With the testing of smart tubing and smart flexible coiled tubing, it was found that their mechanical properties were far inferior to those of drill pipe, and their applications could only be applied to shallow wells. Therefore, wired transmission of smart drill pipe is the fundamental solution to the problem of smart drilling. This invention proposes a conductive wire joint structure for drilling to achieve wired transmission of drill pipe. Utility Model Content

[0004] The purpose of the utility model is to solve the transmission problem of the intelligent drill rod and the sealing problem of the drill rod in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides a drilling slip ring conductive wire joint structure, including a male joint and a female joint, both of which are equipped with drill pipe threads, and the female joint and the male joint are screwed together by the drill pipe threads; both ends of the female joint and the male joint are designed with an upper shoulder and a lower shoulder;

[0006] The sealing insulation plug-in includes a male connector plug-in and a female connector plug-in. The female connector plug-in is installed on the female connector. The female connector is provided with a female connector wire hole, and the wire is connected to the female connector plug-in through the wire hole; the male connector plug-in is installed on the male connector. The male connector is provided with a male connector wire hole, and the wire is connected to the male connector plug-in through the wire hole; the contact slip ring is installed on the male connector plug-in and the female connector plug-in, and two first-stage sealing O-rings are installed on the male connector, and the two first-stage sealing O-rings are located on the left and right sides of the male connector plug-in. Second-stage sealing O-rings are installed on both the male connector plug-in and the female connector plug-in.

[0007] Furthermore, the female connector and the male connector are both metal parts.

[0008] Furthermore, a guiding and straightening structure is installed on the male connector and the female connector.

[0009] Beneficial effects:

[0010] 1. The present invention features a simple structure and ease of use, enabling wire routing between connectors while also fulfilling the functions of a conventional drill pipe joint. The hard contact structure between the upper and lower shoulders improves the joint's mechanical properties compared to conventional drill pipe joints. Furthermore, the placement of the sealed insulating connector between the "double-top" structure eliminates the problem of stress concentration during the application of force to the sealed insulating connector.

[0011] 2. The sealed insulated connector is designed with a male connector plug-in, a female connector plug-in and a metal elastic contact slip ring, which can achieve reliable hard contact between the connectors, compensate for dimensional errors caused by processing and assembly, ensure reliable contact and achieve reliable electrical conduction.

[0012] 3. In addition to adopting "double top" to achieve the sealing of the sealed insulation connector position, a sealing O-ring is also designed on the connector to ensure reliable sealing.

[0013] 4. This joint has a simple structure and low cost. While ensuring power, signal transmission, and torque transmission, it can achieve high-speed, real-time data transmission on the drill pipe and power supply to downhole instruments. This can solve the bottlenecks of data transmission and downhole power supply in the current informatization and intelligentization of drilling. Achieving downhole informatization and intelligentization can significantly improve drilling efficiency and safety, reduce oilfield exploration and development costs, and better serve oil and gas exploration and development. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the assembly diagram of the drilling conductive wire joint structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the female connector of the present utility model;

[0016] Figure 3 It is a cross-sectional view of the male connector of the present utility model.

[0017] Figure markings: 1-female connector, 101-female connector wire hole, 2-male connector, 201-male connector wire hole, 3-drill rod thread, 4-connector guide structure, 5-upper shoulder, 6-lower shoulder, 7-sealed insulating connector, 701-male connector plug-in, 702-female connector plug-in, 8-metal elastic contact plug-in, 9-first-stage sealing O-ring, 10-second-stage sealing O-ring. DETAILED DESCRIPTION

[0018] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0019] The structure of the present utility model is described in detail below with reference to the accompanying drawings.

[0020] See also Figure 1-Figure 3 A drilling slip ring conductive wire joint structure includes a female connector 1 and a male connector 2. Both are metal components. Drill pipe threads 3 and guide and straightening structures 4 are installed on each connector. The drill pipe threads 3 and guide and straightening structures 4 are spaced apart. The female connector 1 and the male connector 2 are straightened by the joint guide and straightening structure 4 to prevent damage to the joints. The female connector 1 and the male connector 2 are screwed together via the drill pipe threads 3. A primary seal is achieved between the female connector 1 and the male connector 2 via a first-stage O-ring 9, and a secondary seal is achieved via a second-stage O-ring 10.

[0021] An upper shoulder 5 and a lower shoulder 6 are designed at both ends of the female connector 1 and the male connector 2. After the drill pipe thread 3 is screwed into place, the upper shoulder 5 and the lower shoulder 6 are subjected to force synchronously, bear torque, and achieve hard contact sealing.

[0022] The sealing and insulating insert 7 is located between the drill pipe threads 3 and the guiding and straightening mechanism 4. It comprises a male connector insert 701 and a female connector insert 702. Female connector insert 702 is mounted on female connector 1, which has a female connector wire hole 101, through which the wires connect to female connector insert 702. Male connector insert 701 is mounted on male connector 2, with male connector insert 701 and female connector insert 702 corresponding. Male connector insert 2 has a male connector wire hole 201, through which the wires connect to male connector insert 701. During the process of tightening the drill pipe threads 3 on the male connector 2 and the female connector 1, the female connector 702 on the female connector 1 and the male connector 701 on the male connector 2 will gradually come into contact. When the drill pipe threads 3 are tightened into place, the male connector plug-in 701 and the female connector plug-in 702 on the sealing insulation plug-in 7 are in contact through the metal elastic contact slip ring 8 to achieve electrical conduction between the female connector 1 and the male connector 2. The metal elastic contact slip ring 8 is installed on the male connector plug-in 701 and the female connector plug-in 702 and is connected to the next-level drill pipe through a wire.

[0023] Two primary sealing O-rings 9 are installed on the male connector 2, one on each side of the male connector insert 701, providing the primary seal for tightening the connector. The upper and lower shoulders 5 and 6, located on either side of the sealed insulating connector 7, achieve synchronous contact ("double contact"), providing pressure reduction, sealing, and torque transmission. This results in relatively uniform stress distribution across the sealed insulating connector 7. This synchronous contact of the upper and lower shoulders securely encloses the central contact ring, effectively addressing high vibration issues.

[0024] Second-stage sealing O-rings 10 are installed on both the male connector plug-in 701 and the female connector plug-in 702. The second-stage sealing O-rings 10 are located on the left and right sides of the metal elastic contact slip ring 8, which can achieve auxiliary sealing when tightening the connector and protect the metal elastic contact slip ring 8 between the second-stage sealing O-rings 10 from being conducted by high-pressure mud. In addition, the metal hard contact between the sealed insulating connectors 7 is achieved through the metal elastic contact slip ring 8, which can compensate for the axial and radial errors between the connectors within a certain range and ensure reliable electrical conduction.

[0025] The working principle of this utility model:

[0026] The male connector 2 and the female connector 1 are based on the connector guiding and straightening structure 4 to ensure that the first-stage sealing surface grinding will not occur during the connector assembly process; the upper shoulder 5 and the lower shoulder 6 are hard-contacted by screwing to achieve metal hard sealing, the first-stage sealing O-ring 9 on the male connector 2 and the female connector 1 realizes the main seal, and the second-stage sealing O-ring 10 realizes the auxiliary seal, protecting the metal elastic contact slip ring 8 between the second-stage sealing O-ring 10 from being conducted by high-pressure mud, and a sealed insulating connector 7 is provided on the outer wall of the male connector 2 and the inner wall of the female connector 1, which is located between the first-stage sealing O-ring 9; wire holes are provided in the male connector 2 and the female connector 1, and the conduction of the sealed insulating connector 7 is realized by the metal elastic contact slip ring 8; as the thread is tightened, the connection between the male connector plug-in 701 and the female connector plug-in 702 is realized, and finally the electrical conduction between the male connector 2 and the female connector 1 is realized by the metal elastic contact slip ring 8.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A drilling slip ring conductive wire joint structure, characterized in that: It includes a male connector and a female connector, both of which are equipped with drill pipe threads, and are connected by screwing the drill pipe threads; both ends of the female connector and the male connector are designed with upper and lower shoulders; The sealing insulation plug-in includes a male connector plug-in and a female connector plug-in. The female connector plug-in is installed on the female connector. The female connector is provided with a female connector wire hole, and the wire is connected to the female connector plug-in through the wire hole; the male connector plug-in is installed on the male connector. The male connector is provided with a male connector wire hole, and the wire is connected to the male connector plug-in through the wire hole; the contact slip ring is installed on the male connector plug-in and the female connector plug-in, and two first-stage sealing O-rings are installed on the male connector, and the two first-stage sealing O-rings are located on the left and right sides of the male connector plug-in. Second-stage sealing O-rings are installed on both the male connector plug-in and the female connector plug-in.

2. The drilling slip ring conductive wire joint structure according to claim 1, characterized in that: The female connector and the male connector are both metal parts.

3. The drilling slip ring conductive wire joint structure according to claim 1, characterized in that: The male connector and the female connector are provided with guiding and straightening structures.

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