Drilling site looped network system

Abstract

The utility model discloses a drilling site looped network system, which comprises a redundant PLC (programmable logic controller) system, at least two switch slave stations and at least two types of network lines, and is characterized in that each switch slave station is connected with different types of drilling equipment control systems; all the switch slave stations and the redundant PLC system are connected through each type of network lines to form a corresponding type of looped network, and the redundant PLC system is used for outputting instruction information about switching from the current looped network to the other type of looped network when a node communication fault occurs in the connected looped network. According to the utility model, the network stability and system safety of a drilling site are improved, and the stable operation of site construction is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic communication networks in the petroleum industry, in particular to a drilling site ring network system. Background Art

[0002] Currently, drilling sites mainly use the star topology network structure of Industrial Ethernet. In this communication structure, all devices rely on a central node for communication. Once a problem occurs in the central node, all devices connected to it will lose network connection. In addition, the Industrial Ethernet standard stipulates that the maximum transmission distance is 100 meters. If it exceeds 100 meters, data delays and packet loss may occur.

[0003] To alleviate the problem of limited transmission distance, some new drilling equipment uses optical fiber transmission between the driller's room and the electrical control room. However, due to the frequent relocation of the well crew, the optical fiber is easily damaged during the disassembly and assembly process, and the fiber fusion process requires professional tools, which is difficult to operate on site.

[0004] In existing drilling site communication network technology, a patent document with publication number CN107566042A has been proposed. This patent document provides a method for implementing a PROFIBUS redundant ring network fiber optic transceiver, which involves a PROFIBUS-based message collection and analysis method. However, this patent document is essentially a method for handling ring network failures and does not involve the relevant technical features of how to configure the ring network.

[0005] In summary, the existing technology urgently needs to provide a solution to ensure network stability and system security at the drilling site to ensure the stable operation of on-site construction. Utility Model Content

[0006] The purpose of this utility model is to provide a solution to ensure network stability and system security at the drilling site, so as to ensure the stable operation of on-site construction.

[0007] In order to solve the above technical problems, an embodiment of the present invention provides a drilling site ring network system, including: a redundant PLC system, at least two switch slave stations and at least two types of network lines, wherein each switch slave station is connected to a different type of drilling equipment control system, and all switch slave stations and the redundant PLC system are connected to each type of network line to form a corresponding type of ring network, wherein the redundant PLC system is used to output instruction information about switching from the current ring network to another type of ring network when a node communication failure occurs in the connected ring network.

[0008] Preferably, the at least two types of network lines include optical and electrical network lines.

[0009] Preferably, the first type of network line is an optical fiber line, and the second type of network line is an Ethernet line.

[0010] Preferably, the redundant PLC system comprises: a first PLC and a second PLC, wherein all switch slave stations are connected to the first PLC via optical fiber lines to form an optical fiber ring network, and all switch slave stations are connected to the second PLC via Ethernet lines to form an Ethernet ring network.

[0011] Preferably, the IP addresses of other devices in the ring network system are not allowed to fall into the network segment formed by the IP address of the first PLC and the IP address of the second PLC.

[0012] Preferably, each switch slave station has a fiber optic interface and an Ethernet interface.

[0013] Preferably, when the optical fiber interface is used, the corresponding Ethernet interface is set to be disabled; when the Ethernet interface is used, the corresponding optical fiber interface is set to be disabled.

[0014] Preferably, the redundant PLC system is further configured to output the instruction information when it is detected that failures occur in at least two communication nodes in the connected ring network.

[0015] Preferably, during normal operations at the drilling site, an optical fiber ring network is used for communication, wherein when a ring network node failure occurs, instruction information for switching from optical fiber ring network communication to Ethernet ring network communication is output.

[0016] Preferably, the drilling equipment includes a surface tubing system, a driller's room, a circulation system, a power center, an electric transmission system, a cementing system, and a well control system.

[0017] Compared with the prior art, one or more embodiments of the above solutions may have the following advantages or beneficial effects:

[0018] This utility model proposes a drilling site ring network system. This system prioritizes fiber-optic ring network transmission, which offers stable signals, high data transmission rates, and is less susceptible to network congestion. Furthermore, it incorporates ring network communication structures with different types of transmission media (fiber optic, Ethernet), enabling a redundant PLC system architecture. This significantly improves drilling site network stability and system security, ensuring stable operation of on-site operations.

[0019] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the drilling site ring network system of an embodiment of the present application. DETAILED DESCRIPTION

[0022] The following describes the implementation of the present invention in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that as long as no conflict arises, the various embodiments of the present invention and the various features in each embodiment can be combined with each other, and the resulting technical solutions are all within the scope of protection of the present invention.

[0023] In addition, the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions. Also, although a logical order is shown in the flowchart, in some cases, the steps shown or described can be performed in a different order than here.

[0024] The terms used herein are intended only to describe specific embodiments and are not intended to limit exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "a", "an", "an item" used herein are also intended to include the plural. It should also be understood that the terms "comprise" and / or "include" used herein specify the presence of stated features, integers, steps, operations, units and / or components, and do not preclude the presence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0025] To address the problems in the aforementioned background technology, the present invention provides a drilling site ring network system. This system utilizes a dual-redundant ring network structure of optical fiber and industrial Ethernet cables. During normal operation, the optical fiber ring network is preferably used to ensure data transmission speed and long-distance stability. When two or more faults occur in the optical fiber ring network, the system can be switched to the industrial Ethernet ring network to ensure normal operation. This significantly improves network stability and system security at the drilling site, ensuring stable operation of on-site construction.

[0026] Figure 1 This is a schematic diagram of the overall structure of the drilling site ring network system according to the embodiment of the present application. Figure 1 As shown, the drilling site ring network system described in the embodiment of the present invention includes at least: a redundant PLC system 1, at least two switch slave stations 4-8 and at least two types of network lines 9, 10.

[0027] Redundant PLC system 1 is the management end of the entire ring network system and has the status of a management segment. Each slave switch station 4-8 is a client of the entire ring network system and has the status of a client. Each slave switch station is connected to a different type of drilling equipment control system.

[0028] Each type of network line connects all the switch slave stations and the redundant PLC system 1 to form a corresponding type of ring network. Each type of network line connects all the switch slave stations and the redundant PLC system 1 to form a communication ring network of the corresponding type of line.

[0029] In the embodiment of the present invention, the at least two types of network lines include optical and electrical network lines. Specifically, the first type of network line is an optical fiber line 9 , and the second type of network line is an Ethernet line 10 .

[0030] like Figure 1 As shown, on the one hand, all switch slave stations and redundant PLC system 1 are serially connected via Ethernet line 10 to form an Ethernet ring network; at the same time, all switch slave stations and redundant PLC system 1 are connected via optical fiber line 9 to form an optical fiber ring network.

[0031] In an embodiment of the present invention, the redundant PLC system 1 is used to output instruction information about switching from the current ring network to another type of ring network when a node communication failure is detected in the connected ring network, so that the current ring network system uses the instruction information to switch from the current type of connected ring network to another type of ring network.

[0032] In one embodiment, the redundant PLC system 1 is further configured to output instruction information on switching from the current ring network to another type of ring network when detecting failures of at least two communication nodes in the connected ring network.

[0033] Furthermore, in an embodiment of the present invention, the redundant PLC system includes a first PLC and a second PLC. The first PLC2 serves as the management end of a fiber optic ring network, namely, all slave switches are serially connected to the first PLC2 via optical fiber line 9 to form a fiber optic ring network. The second PLC3 serves as the management end of an Ethernet ring network, namely, all slave switches are connected to the second PLC3 via Ethernet line 10 to form an Ethernet ring network.

[0034] In this embodiment of the present invention, the X1 network interfaces of the first PLC2 and the second PLC3 are directly connected to the corresponding network lines using PN cables. The IP addresses of other devices in the ring network (all slave stations and all drilling equipment) are not allowed to fall within the network segment formed by the IP addresses of the first PLC2 and the second PLC3.

[0035] As Figure 1 shown, the redundant PLC system 1 includes a 1# redundant PLC 2 and a 2# redundant PLC 3, for building a redundant ring network, the X1 network interfaces of the two redundant PLCs are connected into the ring network, and the 1# redundant PLC 2 and the 2# redundant PLC 3 are management ends of the entire ring network, and the two X1 interfaces of the PLCs must be directly connected by using PN cables.

[0036] No other IP is allowed to be added in the IP address network segment of the two PLCs 2 and 3. For example, the XI network interface IP address of the 1# redundant PLC (2) is 192.168.0.25, the XI network interface IP address of the 2# redundant PLC (3) is 192.168.0.30, and no other device is allowed to configure addresses 26-29 in the entire ring network.

[0037] During program downloading, any one PLC in the redundant PLC system 1 is downloaded first, after the downloading is completed, the other PLC automatically performs program synchronization operation, so that the two PLCs run the same program after the synchronization is completed.

[0038] Specifically, during program downloading, the 1# redundant PLC 2 is connected for downloading, after the downloading is completed, the 2# redundant PLC 3 automatically performs program synchronization, and the synchronization time is generally about 1-2 minutes, and the two PLCs run the same program after the synchronization is completed. For example, when the 1# PLC has a problem, the 2# PLC is automatically switched within 500 ms, so that the running data is maintained running, and no shutdown maintenance is required.

[0039] In the embodiment of the utility model, when the well drilling site is normally operated, the optical fiber ring network is used for communication. When the ring network node fault (for example, communication fault of at least two slave station nodes) occurs, the instruction information about switching from the optical fiber ring network communication to the Ethernet ring network communication is output, and the current ring network system is controlled to switch from the optical fiber ring network to the industrial Ethernet ring network by using the instruction information.

[0040] Further, each switch slave station has a fiber interface and an Ethernet interface. For the same switch slave station, when the fiber interface is used, the corresponding Ethernet interface is set to be disabled, and when the Ethernet interface is used, the corresponding fiber interface is set to be disabled.

[0041] As Figure 1As shown in the figure, switch #1 slave station 4, switch #2 slave station 5, switch #3 slave station 6, switch #4 slave station 7, and switch #5 slave station 8 act as clients in the ring network. To implement optoelectronic ring network switching, two configurations are required. To facilitate switching (no hardware adjustments are required, switching can be achieved through software control alone), when using the fiber optic interface (P1-P4), the corresponding Ethernet interface (P1-P4) is disabled; when using the Ethernet interface (P1-P4), the corresponding fiber optic interface (P1-P4) is disabled.

[0042] Furthermore, each switch slave station is configured with two sets of PN / IE subnets to correspond to the corresponding network interface and configuration mode.

[0043] When switching between two ring networks in the same switch slave station, first establish two PN / IE subnets during configuration. When using a fiber optic ring network, use the PN / IE-1 subnet for connection and disable PN / IE-2. When switching to Ethernet, use the PN / IE-2 subnet for connection and disable PN / IE-1.

[0044] When a problem occurs in the optical fiber ring network, it switches to the PN / IE-2 subnet. The slave stations belonging to the PN / IE-2 subnet and the slave stations belonging to the PN / IE-1 subnet have the same configuration information except for the names of the MRP domains and the ring port configurations.

[0045] Furthermore, when connecting various drilling equipment at the drilling site to the ring network system, the drilling equipment described in the embodiment of the present invention includes but is not limited to: a ground tubing system, a driller's room, a circulation system, a power center, an electric transmission system, a cementing system, and a well control system.

[0046] Example

[0047] (1) A drilling construction site is equipped with an optoelectronic dual redundant system. The slave station uses a 20-way optoelectronic switch. In actual deployment, the 1st and 2nd optical ports and 1st and 2nd electrical ports of each switch form a fiber optic ring network and an Ethernet ring network respectively. Other equipment on site is connected to the ring network according to the principle of proximity. After the system is powered on, it operates normally, and the data exchange speed is less than 100ms.

[0048] (2) After three relocations and disassemblies on site, the system reported that the optical fiber cable between the electric drive system VFD1 and the electric drive system VFD2 was faulty, but all the equipment in the entire system was operating normally. This shows that when one node in the ring network system is damaged, it does not affect the operation of the entire system.

[0049] (3) After seven relocations and disassemblies on site, the system reported that the fiber optic cable in the string system-driller's room was faulty and was about to switch to the Ethernet ring network. The ring network switch was completed within 5 seconds. After the switch was completed, except for the need to manually reset the equipment, other equipment was successfully restored and operated normally;

[0050] (4) After switching to the Ethernet ring network, the current well equipment operates normally, and the data exchange speed is less than 200ms.

[0051] This utility model discloses a drilling site ring network system. This system prioritizes fiber optic ring network transmission, which offers stable signals, high data transmission rates, and is less susceptible to network congestion. Furthermore, it incorporates ring network communication structures with different types of transmission media (fiber optic, Ethernet), enabling a redundant PLC system architecture. This significantly improves drilling site network stability and system security, ensuring stable operation of on-site operations.

[0052] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by anyone familiar with the art within the technical scope disclosed by the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

[0053] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0055] It should be understood that the embodiments disclosed herein are not limited to the specific structures, processing steps, or materials disclosed herein, but should be extended to equivalent substitutions of these features understood by those skilled in the relevant art. It should also be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting.

[0056] References to "one embodiment" or "an embodiment" in this specification mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment" or "an embodiment" appearing in various places throughout this specification do not necessarily refer to the same embodiment.

[0057] Although the embodiments disclosed in the present invention are as described above, the contents described are merely embodiments for facilitating understanding of the present invention and are not intended to limit the present invention. Any person skilled in the art of the present invention may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention. However, the scope of patent protection for the present invention shall still be subject to the scope defined in the appended claims.

Claims

1. A drilling site ring network system, characterized in that: include: A redundant PLC system, at least two switch slave stations, and at least two types of network lines, wherein each switch slave station is connected to a different type of drilling equipment control system, and each type of network line is used to connect all switch slave stations and the redundant PLC system to form a corresponding type of ring network, wherein: The redundant PLC system is used to output instruction information about switching from the current ring network to another type of ring network when a node communication failure occurs in the connected ring network.

2. The drilling site ring network system according to claim 1, characterized in that: The at least two types of network lines include optical and electrical network lines.

3. The drilling site ring network system according to claim 2, characterized in that: The first type of network line is a fiber optic line, and the second type of network line is an Ethernet line.

4. The drilling site ring network system according to claim 3, characterized in that: The redundant PLC system includes: a first PLC and a second PLC, wherein all switch slave stations are connected to the first PLC via an optical fiber line to form an optical fiber ring network, and all switch slave stations are connected to the second PLC via an Ethernet line to form an Ethernet ring network.

5. The drilling site ring network system according to claim 4, characterized in that: The IP addresses of other devices in the ring network system are not allowed to fall into the network segment formed by the IP address of the first PLC and the IP address of the second PLC.

6. The drilling site ring network system according to any one of claims 3 to 5, characterized in that: Each switch slave station has a fiber optic interface and an Ethernet interface.

7. The drilling site ring network system according to claim 6, characterized in that: When using the fiber optic interface, the corresponding Ethernet interface is set to disabled; When using the Ethernet interface, the corresponding fiber optic interface is set to disabled.

8. The drilling site ring network system according to any one of claims 1 to 5, characterized in that: The redundant PLC system is further configured to output the instruction information when it is detected that at least two communication nodes in the connected ring network have failed.

9. The drilling site ring network system according to any one of claims 3 to 5, characterized in that: During normal operation at the drilling site, an optical fiber ring network is used for communication. When a ring network node failure occurs, instruction information is output to switch from optical fiber ring network communication to Ethernet ring network communication.

10. The drilling site ring network system according to any one of claims 1 to 5, characterized in that: Drilling equipment includes ground tubing system, driller's room, circulation system, power center, electric drive system, cementing system and well control system.

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