4. Tool driving or impacting
  5. Means to drive tool about an axis
  6. Relatively fixed drive for an advancing tool

John H. Striegler

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Detection of drilling oil filtrate invasion in a core

Measuring and testing – Borehole or drilling – Downhole test
Patent

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Medium curvature directional drilling method

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent

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Method for drilling drainholes within producing zone

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Ray energy detection or measuring
Patent

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Slim hold drilling

Tool driving or impacting – Means to drive tool about an axis – Relatively fixed drive for an advancing tool
Patent

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Profile ID: LFUS-PAI-P-405620

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