4. Wells
  5. Means for perforating, weakening, bending or separating pipe...
  6. With disparate below ground feature

Billy R. Newman

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Methods and apparatus for perforating and treating production zo

Wells – Means for perforating – weakening – bending or separating pipe... – With disparate below ground feature
Patent

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Single-phase annulus-operated sliding sleeve

Wells – Valves – closures or changeable restrictors – Fluid operated
Patent

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Subsurface safety valve of minimized length

Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent

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Well apparatus including a tool for use in shifting a sleeve wit

Wells – Expansible anchor or casing – Fluid pressure actuated
Patent

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Profile ID: LFUS-PAI-P-1321283

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