CN-115208503-B - Network time synchronization monitoring system

CN115208503BCN 115208503 BCN115208503 BCN 115208503BCN-115208503-B

Abstract

The invention belongs to the technical field of deep water oil gas development and relates to a network time synchronization monitoring system which comprises a clock server, a switch, an optical fiber umbilical cable, an underwater routing module, an underwater distribution unit and an underwater environment monitoring module, wherein the switch sends a time request message to the clock server, the clock server responds to the request and outputs a time signal synchronized with a GPS satellite or a Beidou satellite to the switch, the switch sends the received signal to the underwater routing module through the optical fiber umbilical cable, the underwater routing module sends the received signal to the underwater distribution unit, the underwater distribution unit distributes the signal to each underwater environment monitoring module, and the underwater environment monitoring module obtains accurate time information, so that the system clock of the underwater environment monitoring module is adjusted, and the time synchronization is realized.

Inventors

ZHU CHUNLI
WANG XIONG
YIN FENG
XU RENDONG
SUN QIN
CHEN DI
YANG JINLI
ZHONG YUTONG

Assignees

中海油研究总院有限责任公司
中海油研究总院有限责任公司
江苏亨通海洋光网系统有限公司
江苏亨通海洋光网系统有限公司

Dates

Publication Date: 20260421
Application Date: 20220708
Priority Date: 20220708

Claims (7)

1. The network time synchronous monitoring system is characterized by being used for deep water oil gas development and comprising a clock server, a switch, an optical fiber umbilical cable, an underwater routing module, an underwater distribution unit and an underwater environment monitoring module; The switch sends a time request message to the clock server, the clock server responds to the request and outputs a time signal synchronous with a GPS satellite or a Beidou satellite to be sent to the switch, the switch sends the received signal to the underwater routing module through the optical fiber umbilical cable, the underwater routing module sends the received signal to the underwater distribution unit, the underwater distribution unit distributes the signal to each underwater environment monitoring module, and the underwater environment monitoring module obtains accurate time information, so that the system clock of the underwater environment monitoring module is adjusted, and time synchronization is realized; The time synchronization monitoring system also comprises a fault diagnosis and on-line monitoring module, wherein the fault diagnosis and on-line monitoring module is connected with the switch and is used for receiving monitoring data of the underwater environment monitoring module, analyzing and processing the monitoring data to identify external risks existing in the underwater production environment and sending an alarm instruction; The time synchronization monitoring system also comprises a main control station, wherein the main control station is connected with the switch, monitors and controls the underwater production environment through an underwater environment monitoring module connected with the switch, receives an alarm instruction sent by the fault diagnosis and on-line monitoring module, and gives an alarm and emergently shuts down fault equipment; the time synchronization monitoring system further comprises an underwater control module, wherein the underwater control module is arranged on the underwater Christmas tree and the manifold and is used for controlling the hydraulic pressure of the underwater Christmas tree and the manifold, adjusting the opening of a wellhead and simultaneously reading the underground temperature and pressure; The underwater control module transmits the read technological parameters to the exchanger of the underwater platform, the exchanger of the underwater platform is transmitted to the exchanger of the water platform and finally transmitted to the main control station, so that monitoring of the underwater production system is realized, and if abnormal technological parameters are detected, the main control station can generate an alarm signal to start emergency shutdown action.
2. The network time synchronization monitoring system of claim 1, wherein the fiber optic umbilical is connected to the switch through an over-water umbilical termination, the fiber optic umbilical being connected to the subsea distribution unit through a subsea umbilical termination.
3. The network time synchronization monitoring system of claim 1, wherein the underwater routing module is directly connected with the underwater environment monitoring module by using ethernet or serial communication, the ethernet is directly connected to the switch, the serial communication converts the serial port into an ethernet port through a serial server, and then the ethernet port is connected to the switch, and the underwater routing module sends a time request message sent by the underwater environment monitoring module and a collected monitoring signal to the switch.
4. The network time synchronization monitoring system of claim 1, wherein the subsea control module and the subsea routing module are communicatively coupled via fiber optic communication, ethernet communication, DSL communication, or power line carrier communication.
5. The network time synchronization monitoring system of claim 4, wherein the underwater control module and the underwater routing module are both provided with backups, and the sensing instrument in the underwater environment monitoring module is also provided with backups, and when the underwater control module, the underwater routing module or the sensing instrument fails, the underwater control module is rapidly switched to the backup underwater control module, the underwater routing module or the sensing instrument through a redundancy protocol.
6. The network time synchronization monitoring system of claim 1, wherein the time request message is a PTP time message, an NTP time message, or an SNTP time message.
7. The network time synchronization monitoring system of claim 1, wherein the underwater environment monitoring module comprises an underwater camera, hydrophone, or acoustic doppler flow profiler.

Description

Network time synchronization monitoring system Technical Field The invention relates to a network time synchronous monitoring system, and belongs to the technical field of deep water oil gas development. Background The ocean area is about 70.8% of the earth's surface area, and contains abundant resources including biological resources, oil and gas resources, mineral resources, seawater chemical resources, and the like. When the ocean resources are explored and developed, a human cannot directly see real-time pictures, so that an underwater production system is monitored on line by means of an underwater environment monitoring system, such as an underwater camera and a hydrophone, and the safe operation of the exploitation system is ensured. In recent years, a cable communication mode is mainly used in a marine exploration system, because the system is simple and convenient to maintain, but the signal attenuation is large, the speed is low, the time delay is large, the image quality of video signals can be influenced, and particularly when the system is provided with a plurality of cameras, the cable communication does not meet the video monitoring requirement. Disclosure of Invention Aiming at the problems, the invention aims to provide a network time synchronous monitoring system which can observe an underwater production system for a long time, in situ and in real time, realize on-line monitoring and fault diagnosis on the underwater production system and ensure the safe operation of the development process of an underwater oil-gas field. The invention provides a network time synchronization monitoring system which comprises a clock server, a switch, an optical fiber umbilical cable, an underwater routing module, an underwater distribution unit and an underwater environment monitoring module, wherein the switch sends a time request message to the clock server, the clock server responds to the request and outputs a time signal synchronized with a GPS satellite or a Beidou satellite to the switch, the switch sends the received signal to the underwater routing module through the optical fiber umbilical cable, the underwater routing module sends the received signal to the underwater distribution unit, the underwater distribution unit distributes the signal to each underwater environment monitoring module, and the underwater environment monitoring module obtains accurate time information, so that the system clock of the underwater environment monitoring module is adjusted, and the time synchronization is realized. Further, the time synchronization monitoring system further comprises a fault diagnosis and on-line monitoring module, wherein the fault diagnosis and on-line monitoring module is connected with the switch and is used for receiving monitoring data of the underwater environment monitoring module, analyzing and processing the monitoring data to identify external risks existing in the underwater production environment and sending out an alarm instruction. Further, the time synchronization monitoring system also comprises a main control station, wherein the main control station is connected with the switch, monitors and controls the underwater production environment through the underwater environment monitoring module, receives alarm instructions sent by the fault diagnosis and on-line monitoring module, alarms and emergently shuts down corresponding equipment. Further, the fiber optic umbilical is connected to the switch through an over-water umbilical termination, and the fiber optic umbilical is connected to the subsea distribution unit through a subsea umbilical termination. Furthermore, the underwater routing module can be directly connected with the underwater environment monitoring module in an Ethernet or serial port communication mode, the Ethernet is directly connected with the switch, the serial port communication is carried out by converting the serial port into an Ethernet port through the serial port server, then the Ethernet port is connected with the switch, and the underwater routing module sends a time request message and a collected monitoring signal sent by the underwater environment monitoring module to the switch. Further, the time synchronization monitoring system further comprises an underwater control module, wherein the underwater control module is arranged on the underwater Christmas tree and the manifold and is used for controlling the hydraulic pressure of the underwater Christmas tree and the manifold, adjusting the opening degree of a wellhead and simultaneously reading the underground temperature and pressure. Further, the underwater control module and the underwater routing module are in communication connection through optical fiber communication, ethernet communication, DSL communication or power line carrier communication. Further, the underwater control module and the underwater routing module are both provided with backups, and the sensing instrument in the underwate