4. Wells
  5. Valves, closures or changeable restrictors
  6. Destructible element

Lonnie C. Helms

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Activation mechanism for differential fill floating equipment

Wells – Valves – closures or changeable restrictors – Destructible element
Patent

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Flapper valve with protective hinge pin sleeve

Fluid handling – Line condition change responsive valves – Direct response valves
Patent

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Inner string cementing adapter and method of use

Wells – Processes – Cementing – plugging or consolidating
Patent

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Leg closure

Hydraulic and earth engineering – Marine structure or fabrication thereof – With anchoring of structure to marine floor
Patent

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Profile ID: LFUS-PAI-P-407879

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