High Quality 15 1/ 2 Inchtricone Bit Drilling Drag Bit for Water Well

Package Size 20.00cm * 20.00cm * 10.00cm Package Gross Weight 20.000kg High Quality 15 1/ 2 inch Tricone Bit Drilling Dr

Package Size 20.00cm * 20.00cm * 10.00cm Package Gross Weight 20.000kg

High Quality 15 1/ 2 inch Tricone Bit Drilling Drag Bit for Water Well

IADC	Pressure(KN/mm)	Drill speed(r/min)	Applicable strata
417/427	0.3-0.9	150-70	Very soft strata have low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
437/447	0.35-0.9	150-70
515/525	0.35-0.9	180-60	Soft strata have low compressive strengthand high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
517/527	0.35-1.0	140-50
535/545	0.35-1.0	150-60	Soft to medium-soft has low compressive strength, such as medium-soft shale, medium-soft limestone, medium-soft sandstone, forming medium-hard and hard grinding interlayer.
537/547	0.4-1.0	120-40
617/627	0.45-1.1	90-50	High compressive medium-hard formation strength, such as hard shale, limestone, sandstone, dolomite, etc.
637	0.5-1.2	80-40	Hard strata have high compressive strength, such as sandstone, limestone, dolomite, gypsum, marble, etc.
737	0.7-1.2	70-40	Hard strata have high compressive strength, such as hard limestone, dolomite, etc.
827/837	0.7-1.2	70-40	Extremely hard strata with high compressive strength and abrasiveness, such as hard limestone, dolomite, hard sandstone, chert, etc.

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