Explosion proof distributed fiber optic temperature monitoring host for underground mining of petroleum gas storage

Senzor temperature iz optičnih vlaken, Inteligentni nadzorni sistem, Porazdeljen proizvajalec optičnih vlaken na Kitajskem

In order to understand the dynamic operation status of the gas storage facility in the project, according to the monitoring requirements of the observation wells inside the facility and the technical requirements of the testing process, it is necessary to use fiber optic monitoring and other technologies to achieve dynamic monitoring of reservoir temperature and pressure in the observation wells of the gas storage facility, providing a basis for the analysis and prediction of injection and production operations and indicators of the gas storage facility.

There are many application areas for distributed fiber optic temperature measurement systems, usually using observation underground distributed fiber optic temperature measurement hosts for power cables, tunnels, železniški tranzit, oil and gas pipelines, itd.

In order to understand the dynamic operation status of the gas storage facility in the project, according to the monitoring requirements of the observation wells inside the facility and the technical requirements of the testing process, it is necessary to use fiber optic monitoring and other technologies to achieve dynamic monitoring of reservoir temperature and pressure in the observation wells of the gas storage facility, providing a basis for the analysis and prediction of injection and production operations and indicators of the gas storage facility.

There are many application fields for distributed fiber optic temperature measurement systems, usually including power cables, tunnels, železniški tranzit, oil and gas pipelines, itd.

Main application scenarios:

Equipment or spaces where mining enterprises have a demand for temperature monitoring
Monitoring of spontaneous combustion in coal mine goaf/working face
Temperature Monitoring of Coal Mine Belt Conveyor
Temperature monitoring of power cables

In the exploration and development process of oil and gas wells, production personnel need to continuously conduct dynamic testing of various oil and gas reservoirs, monitor and measure the formation pressure parameters of oil and gas reservoirs in real time, accurately evaluate oilfield productivity based on these parameters, optimize the evaluation methods of oilfield productivity, determine reasonable development plans, and ensure safe production. The process of China’s petroleum industry has developed rapidly. In order to increase oil production, various large and small oil fields have started research on the re exploitation of old oil fields. Some of these process measures, such as fracturing, acidification, and downhole water injection, need to accurately measure the pressure data of oil and gas reservoirs during the process of petroleum development to determine the specific situation of improving production wells. At the same time, in daily related oil production work, the data of downhole formation pressure also provides data support for determining development indicators for the oilfield.

Fiber optic sensors have attracted widespread attention due to their advantages such as insensitivity to electromagnetic interference, ability to withstand extreme harsh conditions, absence of electronic components at the sensing end, high-precision measurement of wellbore and wellsite environmental parameters, small device size, relatively easy installation, and ease of networking.

Trenutno, commonly used fiber optic sensors mainly include micro bent fiber optic sensors, interferometric fiber optic sensors, Bragg grating fiber optic sensors, distributed fiber optic sensors, itd. The micro bent fiber optic sensor is susceptible to measurement accuracy issues such as light source fluctuations, fiber bending losses, connection losses, and detector noise; Interference type sensors require high consistency in the optical path, which limits the flexibility of the system; Fiber Bragg grating sensors have problems such as relatively low measurement accuracy and resolution, complex system structure, and difficulty in demodulation.
Underground fiber optic pressure gauge is used to solve the problems of complex structure, difficult construction, low accuracy, poor stability, live operation, large fluctuation of light source, and inability to use conventional pressure gauges in high temperature, high pressure and high corrosion environments of existing pressure monitoring instruments.