Sealing structure for the upper end of a rising or conveying...
Sealing system for a rotary rock bit
Sealing system for a rotary rock bit
Sealing system for a sealed bearing assembly used in earth...
Sealing system for a well bore in which a hot fluid is...
Sealing system for an earth boring cutter
Sealing system for underwater installation
Seat apparatus and method
Secondary and tertiary oil recovery process
Secondary cutting element for drill bit
Secondary cutting structure
Secondary lock for a downhole tool
Secondary oil recovery by self-propelled solvent extraction
Secondary oil recovery process
Secondary oil recovery process
Secondary oil recovery process
Secondary recovery by miscible vertical drive
Secondary recovery for steeply dipping reservoirs: combined...
Secondary recovery method
Secondary recovery method