Patent ID: 8662176

Claim:
A method for cooling a downhole gas generator, the method comprising the steps of: providing the downhole gas generator comprising: a combustion housing forming a combustion chamber having a combustion end and an exhaust end; a plurality of annular cooling jacket segments surrounding the combustion housing, each of the plurality of annular cooling jacket segments having an inlet port and an outlet port; and a plurality of apertures through the combustion housing allowing water to flow from the plurality of annular cooling jacket segments into the combustion chamber; providing a flow of a fuel and an oxidizing agent into the combustion chamber for combustion; providing a flow of water into the inlet ports, and out of the outlet ports, of each of the plurality of annular cooling jacket segments, for cooling the downhole gas generator; regulating the flow of water into the inlet ports, and out of the outlet ports, of each of the plurality of annular cooling jacket segments, to provide optimal cooling of the downhole gas generator, and to also optimize the flow of water through the plurality of apertures of the combustion housing and into the combustion chamber, to minimize heat damage to the combustion housing.