Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations

Child Classifications

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• C09K 8/02 Well-drilling compositions since 2006 IPC+CPC Available in IPC and CPC
• C09K 8/40 Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses since 2006 IPC+CPC Available in IPC and CPC
• C09K 8/42 Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells (compositions for plastering C09K8/50) since 2006 +4 CPC IPC+CPC Available in IPC and CPC
• C09K 8/50 Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls (compositions for consolidating loose sand or the like around wells C09K8/56) since 2006 +1 CPC IPC+CPC Available in IPC and CPC
• C09K 8/52 Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning since 2006 IPC+CPC Available in IPC and CPC
• C09K 8/54 Compositions for in situ inhibition of corrosion in boreholes or wells since 2006 IPC+CPC Available in IPC and CPC
• C09K 8/56 Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof (compositions for plastering borehole walls C09K8/50; ) since 2006 IPC+CPC Available in IPC and CPC
• C09K 8/58 Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids since 2006 IPC+CPC Available in IPC and CPC
• C09K 8/60 Compositions for stimulating production by acting on the underground formation since 2006 +4 CPC IPC+CPC Available in IPC and CPC