US PATENT SUBCLASS 166 / 263
.~ Cyclic injection then production of a single well


Current as of: June, 1999
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166 /   HD   WELLS

244.1  DF  PROCESSES {39}
263.~ Cyclic injection then production of a single well


DEFINITION

Classification: 166/263

Cyclic injection then production of a single well:

(under subclass 244.1) A process including a step in which a well is (1) used for a period of time only to place material into the pores of the earth and then for a period of time used only to produce fluid from the earth or (2) used for a period of time to produce fluid from the earth and then used (a) for a period of time only to place material into the pores of the earth or (b) for a period of time is shut in to stop flow of fluid from the earth.

SEE OR SEARCH THIS CLASS, SUBCLASS:

245, for specific pattern of plural wells.

268, for cyclic operation in an injection well moving hydrocarbons to a producing well.

370, for varying downhole pressure in a producing well.