IN SITU COMBUSTION USING AMMONIUM NITRATE AS OXYGENE SOURCE

摘要

A method is disclosed for recovering crude oil from a subterranean formation. The invention utilizes the introduction of water containing ammonium nitrate, which is capable of decomposing to generate an oxidant, into the formation. Decomposition conditions and ignition conditions are established within the formation to cause ignition within the formation. The in-situ combustion which results assists in the recovery of crude oil from the formation.