E - Fixed Constructions – 21 – B
Inventor
E - Fixed Constructions
21
B
Inventor
Country: Canada
Adjustable bent sub
Adjustable bent sub i
Device for anchoring an oil well tubing string within an oil...
Drive and shear mechanism for downhole tool
Method and apparatus for downhole sand clean-out operations...
Adjustable bent sub
Adjustable bent sub i
Shock sub for absorbing torsional impact loads
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