The invention discloses a blockage removal method and a blockage removal device for a
microwave hydrate for a gas well. The deicing technology adopted by the conventional
natural gas wells and
carbon dioxide gas wells is that: 1, a well mouth or a
gas pipeline is heated by adopting a
water jacket furnace; 2,
methanol and other inhibitors are added into the gas wells; 3, the
carbon dioxide gas is heated by means of terrestrial heat of the stratum; and 4, an oil
pipe gas
recovery mode is changed into a sleeve gas
recovery mode. The deicing technology has the disadvantages of severe environmental
contamination, complex technology, high labor intensity and strict technical requirement. The blockage removal method is that: a high-frequency
microwave power source is adopted and is guided into a well tube through a wave head pipeline, and a
waveguide channel is formed by the well wall tube; and
microwave electromagnetic
waves are transmitted to a
hydrate freezing blockage point in an enclosing way, so that the freezing blockage point is irradiated by the high-frequency electromagnetic
waves, gets energy, raises the temperature and is dissolved. Therefore, the freezing blockage problem of the
hydrate is solved. The blockage removal method is used for unfreezing the gas wells.