.~ Distinct, separate injection and producing wells {7}
271
.~.~ Including fracturing or attacking formation
DEFINITION
Classification: 166/271
(under subclass 268) A process in which the earth is cracked to produce a fissure or fissures therein or in which fluid introduced into the pores of the earth chemically reacts with the earth or deposits in the earth to enlarge the pores.
(1) Note. See (1) Note in subclass 307 for a discussion of the meaning of "deposits in the earth".
SEE OR SEARCH THIS CLASS, SUBCLASS:
259, for a process including in situ combustion, input and output wells and fracturing or attacking the formation.
