Foam scrubbing plunger system and gas production process

The invention discloses a foam scrubbing plunger system and a gas production process, the foam scrubbing plunger system comprises a foam scrubbing agent injection mechanism, a blowout prevention pipe, a plunger and a clamping device; the blowout prevention pipe is installed on the ground and used for fixing the plunger. The plunger is of a hollow structure, and a valve is arranged at the bottom of the plunger. The clamping device is installed in an oil pipe in a gas well, and the top of the clamping device is provided with a fishing head used for opening a valve in a jacking mode. The injection end of the foam scrubbing agent injection mechanism is arranged above the blowout prevention pipe, and a foam scrubbing agent is injected into the plunger through the injection end. The foam discharging device and the plunger are combined, the plunger plays a role in isolating gas and liquid and lifting liquid, liquid slippage is reduced, the foam discharging device plays a role in reducing the density of a shaft, and