Advantages of Distributed Fiber Optic Temperature Measurement System for Geothermal Wells-INNO

Ưu điểm của hệ thống đo nhiệt độ sợi quang phân tán for geothermal wells:
1. Long distance underground geothermal temperature measurement
The underground distance is generally quite long, ranging from several hundred meters to several thousand meters, and even longer distances. Cáp quang phân tán temperature measurement systems can be applied to long-distance temperature measurement. The system conducts real-time temperature inspections of the entire tunnel area, monitors the on-site environmental temperature inside the tunnel, bao gồm 100% of the tunnel area, and has no measurement blind spots.

The system has multi-level positioning reporting, differential temperature reporting, and forecasting functions. Once the temperature value or temperature rise rate of the tunnel environment exceeds the set threshold, it automatically sends out sound and light alarm information and transmits it to the fire host.

Khi xảy ra hỏa hoạn, provide timely information and accurately locate the location of the fire, and can be linked and controlled with other fire-fighting facilities through relay output modules.

Real time temperature information and data can be automatically maintained, with historical data viewing and statistical analysis functions.

The system has a self diagnostic function, and if it detects damage to the optical cable, the system can promptly locate the fault point.

2. Real time monitoring of underground geothermal temperature
The geothermal underground hệ thống đo nhiệt độ sợi quang phân tán can display the downhole temperature of the oil well in real time, detect abnormal situations in a timely manner. Ngoài ra, by analyzing long-term temperature data, the stratification of downhole temperature can be obtained to guide production. Real time online temperature monitoring;

Provide early detection of underground temperature anomalies;

Clearly indicate the location of abnormal temperature;

Software analysis of historical single point temperature data at any point underground;

People gradually realize the importance of coordinated development between resource extraction and environmental protection, and the utilization of clean and renewable energy has been given attention. Geothermal energy is extracted as a clean and efficient energy source. Through drilling technology, a wellbore several hundred to several thousand meters deep is drilled below the formation to extract geothermal water, which can be used for industrial power generation or domestic hot water. Geothermal energy is mainly divided into three categories: nhiệt độ cao, medium temperature, and low temperature. Nói chung là, geothermal energy with a formation temperature above 150 ℃ is considered high temperature geothermal energy, while geothermal energy with a temperature between 90 oC và 150 ℃ is considered medium temperature geothermal energy. Geothermal energy with a temperature below 90 ℃ is considered low temperature geothermal energy. High temperature geothermal energy is generally used for industrial power generation, while geothermal energy with a temperature below 90 ℃ mainly provides hot water services.

In order to grasp the drilling status and geothermal well development effect, it is necessary to timely obtain the temperature distribution of the geothermal well formation. Hệ thống đo nhiệt độ giếng địa nhiệt thu được tình trạng nhiệt độ của giếng địa nhiệt.

Việc phân phối hệ thống giám sát nhiệt độ sợi quang đối với các bức tường giếng sâu địa nhiệt bao gồm một thiết bị kiểm tra nhiệt độ sợi quang phân tán, cáp quang bọc thép chịu nhiệt độ cao, và thiết bị cắt cáp quang; Thiết bị kiểm tra nhiệt độ sợi quang phân tán được kết nối với cáp quang bọc thép chịu nhiệt độ cao;

Thiết bị kiểm tra nhiệt độ sợi quang phân tán, được sử dụng để gửi tín hiệu laser đến cáp quang bọc thép nhiệt độ cao, nhận tín hiệu ánh sáng tán xạ Raman mang thông tin nhiệt độ được trả về bằng cáp quang bọc thép nhiệt độ cao, và phân tích và hiển thị chúng;

Cáp quang bọc thép chịu nhiệt độ cao, đi qua thiết bị cắt cáp, giếng sâu địa nhiệt, and transmitting laser signals, collects temperature information at different wellbore positions in the geothermal deep well, and returns the temperature information as Raman scattering light signal to the distributed fiber optic temperature testing device;

Optical cable crossing device, installed at the wellhead, is used for crossing high-temperature armored optical cables and sealing casing cementing cement.