The invention relates to a
water production gas well full-life-circle drainage gas
recovery method and
system. The
system comprises drainage gas
recovery equipment, a gas-water
shunting device, dryingequipment, a gas power generator and a compressor. A first
branch of an outlet pipeline of the drainage gas
recovery equipment is connected to an outer conveying
pipe network. A second
branch is connected with the gas-water
shunting device. Gas flowing out of the top of the gas-water
shunting device passes through an adjusting valve and is dried through the
drying equipment, then the gas is divided into two branches, one
branch flows into the gas power generator through a flow adjuster, the other branch flows into the compressor, and the gas power generator provides
electric energy for the compressor by burning
natural gas. The
natural gas is pressurized through the compressor,
multiple stages of pressure adjusters are started by the
natural gas, shaft accumulated liquid is removed section by section, and
continuous production of a gas well is guaranteed. The method and
system can be suitable for
water production gas well full-life-circle drainage gas recovery, one-time construction is effective for a long time, the
gas lift starting pressure is low, the
energy consumption is low, external
electric energy does not need to be used, and the method and system are safe, reliable, capable of being reused, easy to manage and low in maintenance cost.