Customization: | Available |
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After-sales Service: | One Year |
Warranty: | One Year |
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API 7-1 Roller Slike Drill Collar for Well Drilling
Drilling Collarused below the drill string and put drill pressure to the drill bit; ensure the necessary strength under compressive stress condition; reduce the shockquake, swing and bounce of drill bit and remain steady of the bit when working; and control the well deviation as well.