US PATENT SUBCLASS 507 / 923
.~ Fracture acidizing

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

922  DF  FRACTURE FLUID {2}
923.~ Fracture acidizing

DEFINITION

Classification: 507/923

Fracture acidizing:

Subject matter under art collection 922 wherein the fracturing operation is conducted in the presence of an acidic fracture fluid which is intended to hydrolyze downhole.