Steam generation system with subcooled water spray for wellbore steam injection

A method for injecting steam into a wellbore

• separating wet steam with a first % quality into a dry saturated steam and a saturated condensate;
• superheating the dry saturated steam to produce superheated steam;
• cooling the saturated condensate from a first temperature to a second temperature lower than the first temperature to produced cooled condensate;
• mixing the cooled condensate with the superheated steam to produce process steam with a second % quality higher than the first % quality;
• and
• injecting the process steam into a wellbore.

A method for supplying steam comprising

• separating wet steam into dry saturated steam and saturated condensate;
• heating the dry saturated steam to produce superheated steam;
• cooling the saturated condensate from a first temperature to a second temperature lower than the first temperature to produce cooled condensate;
• and
• introducing the cooled condensate into a stream of the superheated steam, wherein the second temperature is selected so that evaporation of the cooled condensate in the superheated steam stream occurs downstream of the point where the cooled condensate is introduced into the stream of superheated steam.