What are the characteristics of the downhole combustible gas detector?
In recent years, accidents in underground operations have occurred frequently. The gas environment in underground pipeline corridors such as communication wells, sewers, and underground pipe networks is very complicated. Due to the small space in the underground, poor ventilation, and a relatively closed state, toxic and harmful gases are likely to be generated. At this time, the downhole combustible gas detector can be used to detect gas from time to time during downhole operations
one, Common hazardous gases in downhole operations
Common combustible and harmful gases in wells mainly include:
1. Toxic gases: hydrogen sulfide H2S, carbon monoxide CO, sulfur dioxide SO2, ammonia NH3, etc.
2. Asphyxiation: Oxygen O2
3. Combustible gas: methane CH4, petroleum gas, hydrogen H2, etc.
For downhole operations, three kinds of poisonous gases such as oxygen, combustible gas and hydrogen sulfide are generally required for detection, and other gases can be selected and detected according to the actual situation. As for the choice of instrument, it is mainly portable, and an air pump can be properly equipped for sampling and testing before entering the well.
one, combustible gas detector features:
●Waterproof, dustproof, explosion-proof, anti-vibration, anti-corrosion, intrinsically safe design, anti-static, anti-electromagnetic interference
●Protection level IP68
●Self-closing waterproof structure to prevent water damage to the instrument
Diffusion measurement, optional: built-in pump suction measurement, quick response
●Data storage function. Support real-time storage, regular storage or only alarm concentration data and time, can upload data to computer through serial port, use host computer software to analyze data, store and print
●Using large-capacity rechargeable polymer lithium battery, the detection cycle is adjustable. When the detection cycle is 30 minutes and the sending cycle is 1 day (when the detection is abnormal, the sending frequency will be automatically accelerated), the battery life is greater than or equal to 36 months; the battery life can be extended Choice: 1 year, 3 years, 5 years
●The alarm value can be set, and the alarm mode can be selected from low alarm, high alarm, interval alarm, and weighted average alarm
●Support wireless communication such as GPRS/4G/NB-IOT/LoRa/Bluetooth, can monitor in real time remotely via wired or wireless, upload data to mobile APP or transmit to cloud platform, environmental protection bureau, other monitoring centers and monitoring equipment through LAN or Internet , Monitoring computer, real-time monitoring of on-site concentration through host computer software or gas alarm controller
●Support liquid level monitoring, realize intelligent switching in case of water, and alarm for water immersion
●GPS/Beidou positioning, mobile alarm, location tracking
●Support the pump pressure detection function, realize intelligent switching, and prevent the gas circuit from being blocked and damaging the instrument
●High precision temperature and humidity measurement (optional)
●It can be selected to detect 1~6 kinds at the same time, more needs to be customized, the unit can be switched freely, optional: PPM, mg/m3, Vol%, LEL%, ppb, other unit display can be customized
●Automatic zero tracking, multi-level calibration of target points
