Full Mud Cyanide Carbon Slurry Process Principle

Various steel, downhole tools and components of drill string, including as examples, a pdc drill bit 10, a rotary rock bit 100, a crossover sub 40, a stabilizer 51, a reamer or hole enlarger 70, and coring bit 120, are selectively treated to cause certain of their parts to be electronegative with respect to steel, and certain other parts to either have the same electronegativity.

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