.~.~ Injecting specific material other than oxygen into formation
DEFINITION
Classification: 166/261
(under subclass 256) A process in which a material is placed into the pores of the earth, said material being other than oxygen, per se, or air.
(1) Note. A broad recitation of a combustion supporting gas or a mixture of oxygen and an inert gas or of air enriched with oxygen is not included. However, a recitation of a separate injection of inert gas or a recitation of a specific ratio of oxygen in air or inert gas is included, except a recitation such as 20% or more oxygen in inert gas which is tantamount to a recitation of air or air enriched with oxygen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
260, for an in situ combustion processes in which a specific fuel or catalyst for burning is injected into the pores of the earth.
