US PATENT SUBCLASS 507 / 937
.~.~ With emulsion

Current as of: June, 1999
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507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

935  DF  ENHANCED OIL RECOVERY {1}
936  DF  .~ Flooding the formation {1}
937.~.~ With emulsion {1}
938  DF  .~.~.~> With microemulsion

DEFINITION

Classification: 507/937

With emulsion:

Subject matter under art collection 936 wherein the flooding composition is an emulsion intended to be injected into an oil bearing formation in order to enhance oil recovery.