What Does Intermittent Gas Injection Mean?
Intermittent gas injection is a gas-lift pumping method in which gas is delivered to the well for a short period of time known an 'on time' followed by an 'off time' during which no gas is delivered. Intermittent gas injection helps in the gas production process and is installed in wells with low bottom hole pressure. Gas is injected through choke in surface and then gas into tubing. In the tubing, the gas forms three areas namely, gas column area, film area and slug area.
During gas lift operations, the oil production rate increases as gas injection rate increases. As the injection rate of gas increases, the producing oil well will experience a decrease in gravitational pressure drop while experiencing an increase in frictional pressure drop.