US PATENT SUBCLASS 166 / 402
.~.~.~.~ CO2 or carbonated gas

Current as of: June, 1999
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166 /   HD   WELLS

244.1  DF  PROCESSES {39}
268  DF  .~ Distinct, separate injection and producing wells {7}
400  DF  .~.~ Sequentially injected separate fluids (e.g., slugs) {1}
401  DF  .~.~.~ Injecting a gas or gas mixture {1}
402.~.~.~.~ CO2 or carbonated gas {1}
403  DF  .~.~.~.~.~> In combination with additional organic material (e.g., alkyls, carbon chains)

DEFINITION

Classification: 166/402

CO2 or carbonated gas:

(under subclass 401) Injected gas in which (a) carbon dioxide or (b) a salt or ester of carbonic acid in the vapor phase is inserted.