US PATENT SUBCLASS 507 / 929
.~ Cleaning organic contaminant

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

927  DF  WELL CLEANING FLUID {3}
929.~ Cleaning organic contaminant {2}
930  DF  .~.~> Organic contaminant is asphaltic
931  DF  .~.~> Organic contaminant is paraffinic

DEFINITION

Classification: 507/929

Cleaning organic contaminant:

Subject matter under art collection 927 wherein the well cleaning fluid is for cleaning an organic component from the well.