Donnie ventured north to Canada for this #DM650 air rotary drill rig start up. Started with 10-inch hammer and drilled 22-feet to bedrock and set 6-inch steel casing then grouted. Went inside the 6-inch casing with a down the hole hammer.
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Wear Sub can reduce drilling torque and avoid wear caused by rotation between casing and drill string, thus protecting casing and drill string.Integral structure with rubber,Non-rotating structure with rubber,Latch structure with rubber,Non-rotating structure with low alloy steel.#wear sub#non rotating sub#torque reduction sub#friction#oil#gas#drilling
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