In view of the fact that many gas wells often blowout immediately after fracturing, a pseudo-three-dimensional drawdown analysis model in forced closure conditions is built based on the material balance theory and correlation analysis model.

Casing damage during blowout of water injection well is common in many oil fields of China.

A numerical simulation was performed of the steam/liquid dual-phase flash evaporation critical flow within the convergent-divergent nozzle.

This paper puts forward how the large reduced enthalpy governing stage convergent-divergent nozzles are designed to change model when condensing turbine is transformed into heating turbine in heating-generating electricity combined producing,thus lowering shock wave loss and rasing working officiency.