CN-122001708-A - Ring network system for drilling site and implementation method thereof

Abstract

The invention discloses a ring network system for a drilling site and an implementation method thereof, comprising 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 with different types of drilling equipment control systems, all switch slave stations are connected with the redundant PLC system through each type of network line to form corresponding types of ring networks, and the redundant PLC system is used for controlling the ring network system to switch from a current ring network to another type of ring network when detecting node communication faults in the connected ring networks. The invention improves the stability of the network and the safety of the system on the drilling site and ensures the stable operation of site construction.

Inventors

• YIN WENBO
• HE HONGTAO
• MA ZHE
• QI JUNWEI
• ZHANG JIAN
• CUI JIAWEI

Assignees

• 中国石油化工集团有限公司
• 中石化石油工程技术服务股份有限公司
• 中石化胜利石油工程有限公司
• 中石化胜利石油工程有限公司智能信息技术支持中心

Dates

Publication Date

20260508

Application Date

20241108

Claims (10)

1. 1. A ring network system for a drilling site is characterized by comprising 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 with a drilling equipment control system of a different type, all switch slave stations and the redundant PLC system are respectively connected through each type of network line to form a ring network of a corresponding type, And the redundant PLC system is used for controlling the ring network system to switch from the current ring network to the other ring network when detecting that the node communication fault occurs in the connected ring network.
2. 2. The ring network system of claim 1, wherein the at least two types of network lines comprise two types of optical-to-electrical network lines, wherein the first type of network line is an optical fiber line and the second type of network line is an ethernet line.
3. 3. The ring network system of claim 2, wherein the redundant PLC system comprises a first PLC and a second PLC, wherein the X1 network interfaces of the first PLC and the second PLC are directly connected with corresponding types of network lines by PN cables, wherein, The IP addresses of other devices in the ring network system are not allowed to fall into a network segment formed by the IP address of the first PLC and the IP address of the second PLC.
4. 4. A ring network system according to claim 3, wherein, when downloading the program, any one of the PLCs in the redundant PLC system is downloaded first, and after the downloading is completed, the other PLC automatically performs the program synchronization operation, so that after the synchronization is completed, the two PLCs operate the same program.
5. 5. The ring network system of any one of claims 2-4, wherein, Each switch slave station has an optical fiber interface and an Ethernet interface; each exchanger slave station is configured with two configuration modes to respectively correspond to different types of network interface networking; each switch slave station configures two sets of PN/IE subnets to respectively correspond to the network interfaces and configuration modes.
6. 6. The ring network system of claim 5, wherein each switch slave station performs a switch response control by switching a switch or an automatic switching instruction formed by a diagnostic interrupt output from the first PLC or the second PLC when switching a subnet.
7. 7. The ring network system of claim 6, wherein the ring network system comprises a plurality of ring networks, The first PLC or the second PLC is further used for diagnosing wiring or port errors of each slave station node through outputting test messages so as to judge communication faults of each slave station node.
8. 8. The ring network system of any of claims 2-7, wherein the communication is performed using an optical fiber ring network during normal operation of the drilling site, and wherein the communication is switched from the optical fiber ring network communication to the ethernet ring network communication when a ring network node failure occurs.
9. 9. The ring network system of any one of claims 1-8, wherein the drilling equipment comprises a surface tubing string system, a driller's house, a circulation system, a power center, an electric drive system, a cementing system, a well control system.
10. 10. A method for implementing a ring network communication on a drilling site, the method being implemented using the ring network system of any one of claims 1-9, wherein the method comprises: Constructing a redundant PLC system and at least two switch slave stations; All switch slave stations and the redundant PLC system are respectively connected through at least two types of network lines to form corresponding types of looped networks; and under the condition that the redundant PLC system detects that node communication faults occur in the connected ring network, the current ring network system is controlled to be switched from the current ring network to the other ring network.

Description

Ring network system for drilling site and implementation method thereof Technical Field The invention relates to the technical field of petroleum industry automation communication networks, in particular to a ring network system for a drilling site and an implementation method thereof. Background At present, the drilling site mainly adopts a star topology network structure of an industrial Ethernet, all devices of the communication structure rely on a central node for communication, once the central node has a problem, all devices connected to the central node lose network connection, and the industrial Ethernet standard prescribes that the transmission distance is 100 meters at most, and the phenomena of data delay, packet loss and the like can occur when the transmission distance exceeds 100 meters. In order to relieve the problem of limited transmission distance, optical fiber transmission is adopted between a driller room and an electric control room of part of novel drilling equipment, but the damage to optical fibers is easily caused in the disassembly and assembly process due to frequent movement of a well team, and the fiber melting process needs special tools and is difficult to operate on site. In the prior art of communication network in drilling site, a patent document with publication number CN107566042a is proposed, which provides a method for implementing a redundant ring network optical fiber transceiver of PROFIBUS, wherein a method for collecting and analyzing a message based on PROFIBUS is involved, but the patent document is also a method for processing a ring network fault essentially, and does not relate to how to configure related technical features of the ring network. In view of the foregoing, there is a need in the art to provide a solution for ensuring the stability of a network and the safety of a system in a drilling site, so as to ensure the stable operation of site construction. Disclosure of Invention The invention aims to provide a scheme for guaranteeing the stability of a network and the safety of a system on a drilling site so as to guarantee the stable operation of site construction. In order to solve the technical problems, the embodiment of the invention provides a ring network system for a drilling site, which comprises 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 with different types of drilling equipment control systems, all switch slave stations are respectively connected with the redundant PLC system through each type of network line to form corresponding types of ring networks, and the redundant PLC system is used for controlling the ring network system to switch from a current ring network to another type of ring network when node communication faults occur in the connected ring networks. Preferably, the at least two types of network lines include two types of optical-electrical network lines, wherein the first type of network line is an optical fiber line and the second type of network line is an ethernet line. Preferably, the redundant PLC system comprises a first PLC and a second PLC, wherein the X1 network interfaces of the first PLC and the second PLC are directly connected with corresponding types of network lines by adopting PN cables, and the IP addresses of other devices in the ring network system are not allowed to fall into a network segment formed by the IP address of the first PLC and the IP address of the second PLC. Preferably, when the program is downloaded, any one of the PLCs in the redundant PLC system is downloaded first, and after the downloading is completed, the other PLC automatically performs the program synchronization operation, so that the two PLCs operate the same program after the synchronization is completed. Preferably, each switch slave station is provided with an optical fiber interface and an Ethernet interface, each switch slave station is configured with two configuration modes to respectively correspond to different types of network interface networking, and each switch slave station is configured with two PN/IE sub-networks to respectively correspond to the network interfaces and the configuration modes. Preferably, each switch slave station realizes the switching response control by switching a switch or an automatic switching instruction formed by a diagnostic interrupt output by the first PLC or the second PLC at the time of switching a subnet. Preferably, the first PLC or the second PLC is further configured to diagnose a wiring or port error of each slave node by outputting a test message, so as to determine a communication failure of each slave node. Preferably, the communication is performed by adopting an optical fiber ring network during normal operation of the drilling site, wherein when a ring network node fault occurs, the communication is switched from the optical fiber ring network to the Ethernet ring network