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Non-rotating Casing Wearing Sub
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Sichuan China. Kuwait
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The Non-rotary Casing Wearing sub consists of body, non-rotary sleeve, retainer ring and screws. The interface between integral body and non-rotary sleeve is coated hardness chrome for corrosion and abrasion resistance. The joint may reduce the friction between drill pipe and casing during drilling, and may reduce the loss of torque. So it is useful for preventing casing and drill pipe from tear and wear.
Reducing the torque of rotary-table by insulated support point that formed between drill pipe and casing.
Protecting casing and reducing wearing of drill pipe and casing by drill pipe is insulated from the casing.
Reducing drilling resistance and also reducing friction between drill pipe and casing.
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