Earth Boring, Well Treating, And Oil Field Chemistry Patents (Class 507)
Preventing contaminant deposits in petroleum oil conduits (Class 507/90)
Earth boring (Class 507/100)
Well treating (Class 507/200)

Cross-Reference Art Collections

Organically modified inorganic solid (Class 507/901)
Controlled release agent (Class 507/902)
Crosslinked resin or polymer (Class 507/903)
Process of making fluids or additives therefor (Class 507/904)
Nontoxic composition (Class 507/905)
Solid inorganic additive in defined physical form (Class 507/906)
Indicating means (e.g., dye, fluorescing agent, etc.) (Class 507/907)
Earth boring fluid devoid of discrete aqueous phase (Class 507/910)
Biocidal (Class 507/920)
Specified breaker component for emulsion or gel (Class 507/921)
Fracture fluid (Class 507/922)
Completion or workover fluid (Class 507/925)
Packer fluid (Class 507/926)
Well cleaning fluid (Class 507/927)
Acidizing or formation destroying (Class 507/933)
Enhanced oil recovery (Class 507/935)
Corrosion inhibitor (Class 507/939)
Freeing stuck object from wellbore (Class 507/940)

Foreign Patent Art Collections

Class-related foreign documents (Class 507/FOR000)