4. Wells
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Normally closed retainer valve with fail-safe pump through capab

Wells – Submerged well – Means removably connected to permanent well structure
Patent

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Normally closed retainer valve with fail-safe pump through capab

Wells – Submerged well – Means removably connected to permanent well structure
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Normally closed retainer valve with fail-safe pump through capab

Wells – Submerged well – Means removably connected to permanent well structure
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Novel ferrofluids for use in cementing wells

Wells – Processes – Cementing – plugging or consolidating
Patent

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Nozzle effect protectors, centralizers, and stabilizers and rela

Wells – Guide for device or conduit – On sucker or pump rod
Patent

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Nutrient injection method for subterranean microbial processes

Wells – Processes – Using microorganisms
Patent

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