4. Wells
  5. Submerged well
  6. Means removably connected to permanent well structure

J Dougherty

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Apparatus and method for torsional and lateral centralizing...

Wells – Submerged well – Means removably connected to permanent well structure
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Drill bit inserts with interruption in gradient of properties

Boring or penetrating the earth – Bit or bit element – Specific or diverse material
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Profile ID: LFUS-PAI-P-2075392

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