US PATENT SUBCLASS 166 / 272.2
.~.~.~ In association with fracturing or crevice forming processes

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}
272.1  DF  .~.~ Involving the step of heating {4}
272.2.~.~.~ In association with fracturing or crevice forming processes

DEFINITION

Classification: 166/272.2

In association with fracturing or crevice forming processes:

(under subclass 272.1) Heating including the step of creating a fissure in the formation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

308, for fracturing.