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

Hallburton Energy Services, Inc.

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Methods, cement compositions and oil suspensions of powder

Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and...
Reexamination Certificate

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Methods, cement compositions and oil suspensions of powder

Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and...
Reexamination Certificate

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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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