Method of recovering hydrocarbons from a reservoir

摘要

A downhole steam generation apparatus and method of use are provided. The apparatus may include an injection section, a combustion section, and an evaporation section. The injection section may include a housing, injector elements, and injector plate. The combustion section may include a liner having channels disposed therethrough. The evaporation section may include conduits in fluid communication with the channels and the combustion chamber, and a nozzle operable to inject a fluid from the channels to the combustion chamber in droplet form. A method of use may include supplying fuel, oxidant, and fluid to the apparatus; combusting fuel and oxidant in a chamber while flowing the fluid through a plurality of channels disposed through a liner, thereby heating the fluid and cooling the liner; and injecting droplets of the heated fluid into the chamber and evaporating the droplets by combustion of the fuel and the oxidant to produce steam.

主权项

1. A method for recovering hydrocarbons, comprising:
injecting a fluid into a reservoir using a downhole steam generator that is disposed in an injection well; recovering hydrocarbons from the reservoir through a production well; and controlling pressure in the reservoir by maintaining a back pressure in the production well using a pressure control device that is in communication with the production well and by adjusting at least one of pressure and flow at which the fluid is injected into the reservoir by the downhole steam generator.