Importance

Loading Importance Indicators...

Abstract

A method to operate a Steam Assisted Gravity Drainage with Oxygen (SAGDOX) process, in a leaky bitumen reservoir, wherein the process includes start-up, growth, decline and shut down phases. The start-up phase includes

(1) Circulating steam in two horizontal (SAGD) wells, until communication is established between the two wells,(2) Injecting and optionally circulating steam in a SAGDOX oxygen injector well and vent gas well until communication is established,(3) Switching the wells to operate in a SAGD mode, with the upper well as a steam injector and the lower well as a fluid producer, creating a steam chamber,(4) Starting oxygen injection in the oxygen injector well, and(5) Opening at least one Produced Gas (PG) vent gas well, until steam injection is substantially limited to the upper well, oxygen injection has started and PG vent gas removal has started.

Loading the Abstract Image...

First Claim