US PATENT SUBCLASS 507 / 924
.~ With specified propping feature

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

922  DF  FRACTURE FLUID {2}
924.~ With specified propping feature

DEFINITION

Classification: 507/924

With specified propping feature:

Subject matter under art collection 922 wherein the fracture fluid contains a specified propping feature which is usually a solid which holds the fissures or crevices open after the fracturing operation.