Boring or penetrating the earth
With means movable relative to tool to receive, retain, or...
Core-retaining or severing means
Inventor
active
Coring assembly and method
Drill bit and other downhole tools having electro-negative surfa
EMF sacrificial anode sub and method to deter bit balling
Multipurpose fluid flow assisted downhole tool
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Profile ID: LFUS-PAI-P-474090