Monitoring device for soil gas multi-component accumulation emission in CO2 oil displacement region

A monitoring device for soil gas multi-component accumulation emission in a CO2 oil displacement region comprises a sampling cover, a water stopping clamp, a flexible tube, a utensil, saturated salt water or clear water, a glass tube and an opening utensil, and is characterized in that a gas outlet of the sampling cover is connected with one horizontal end of a tee through the flexible tube and the water stopping clamp, the other horizontal end of the tee is connected with an inlet of the utensil, a vertical end is connected with an inlet of a gas component analysis instrument, an outlet of the gas component analysis instrument is connected with an inlet of the sampling cover, and an outlet of the utensil is connected with the opening utensil through the glass tube which is inserted to the bottom of the utensil. With the adoption of the monitoring device, reliable data is provided for developing an effective scheme of sealing and storing CO2 in soil gas in the CO2 oil displacement region, and the sealing and storing effect of CO2 is monitored.