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Sacrificial agents for enhanced oil recovery

E - Fixed Constructions – 21 – B
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Safeguarded method and apparatus for fluid communication...

E - Fixed Constructions – 21 – B
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Safeguarded method and apparatus for fluid communication...

E - Fixed Constructions – 21 – B
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Safemode operating system for a drilling or service rig

E - Fixed Constructions – 21 – B
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Safety apparatus for a cable feed system

E - Fixed Constructions – 21 – B
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Safety apparatus for perforating system

E - Fixed Constructions – 21 – B
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Safety arming device and method, for perforation guns and...

E - Fixed Constructions – 21 – B
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Safety cap for an artesian well

E - Fixed Constructions – 21 – B
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Safety cement plug launch system

E - Fixed Constructions – 21 – B
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Safety cover for an artesian well

E - Fixed Constructions – 21 – B
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Safety device for an oil well and associated safety...

E - Fixed Constructions – 21 – B
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Safety device for retrieving component within wellhead

E - Fixed Constructions – 21 – B
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Safety device for submerged wellhead

E - Fixed Constructions – 21 – B
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Safety drill pipe float

E - Fixed Constructions – 21 – B
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Safety interlock for control lines

E - Fixed Constructions – 21 – B
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Safety joint

E - Fixed Constructions – 21 – B
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Safety latch for well pipe elevators

E - Fixed Constructions – 21 – B
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Safety lock for elevators

E - Fixed Constructions – 21 – B
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Safety net for a drill rig

E - Fixed Constructions – 21 – B
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Safety shear apparatus and method for production wells

E - Fixed Constructions – 21 – B
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