Basial Specification
	Product Name	TCI Tcicone Bit
	Size of Rock Bit	8 1/2''
	Size of Rock Bit	215.9mm
	IADC Code	637G
	Thread Connection	4 1/2 API reg pin
	WOB(kN/mm)	0.5~1.2
	RRM(r/min)	80~40
	Formation	hard formations with high compressive strength,such as sandstone,limestone,dolomite,hard gypsum,marble

Recommended Drilling Parameters
IADC	WOB(kn/mm)	RRM(r/min)	Applicable Formations
116 117	0.35~0.8	150~80	Very soft formations with low compressive strength and high drillability.such as clay,mudstone,chalk,etc.
126 127	0.35~0.9	150~70	Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,salt,soft shale,soft limstone,etc.
136 137	0.35~1.0	120~60	Soft to medium soft formations with low compressive strength and high drillability,such as medium soft shale,hard gypsum,medium soft limestone,medium soft sandstone,soft formation with harder interbeds,etc.
216 217	0.4~1.0	100~60	Medium hard formations with high compressive strength,such as medium soft shale,hard gypsum,medium soft limestone,medium soft sandstone,soft for mations with harder interbeds etc.
246 247	0.4~1.0	80~50	Medium hard formations with high compressive strength,such as abrasive shale,limestone,sandstone,dolomite,hadr gypsum,marble,etc.
417 437 447	0.35~0.9	150~70	Very soft formations with low compressive strength and high drillability,such as clay,gypsum,salt,soft shale,soft limestone,etc.
517 527	0.5~1.0	140~60	Soft formations with low compressive strength ang high drillability such as mudstone,gypsum,salt,soft shale,soft limestone,etc.
537 547	0.45~1.0	120~50	Soft to medium formations with low compressive strength,such as medium soft shale,medium soft limestone,mediun soft limestone,medium soft sandstone,medium formation with harder and abrasiver interbeds.etc.
617 627	0.45~1.1	90~50	Medium hard formations with high compressive strength such as hadr shale,limestone,sandstone,dolomite,etc.
637	0.5~1.2	80~40	Hard formations with high compressive strength, such as sandstone,limestone,dolomite,hard gypsum,marble,etc.
Note:the upper limits of WOB and Rpm in above lable should bot used simulaneously

Product Detail

cheap price 8 1/2 Inch pilot bit/ tricone bit for well drilling

product application

The Tricone Bit is the most versatile drill bit on the market.It is the go to drill bit in most styles of drilling.Whether you are drilling a water well or an oil well.

cheap price 8 1/2 Inch pilot bit/ tricone bit for well drilling

Company Information

Hejian Longyue Drill Bit Manufacturer Co.,Ltd.

is a manufacturer of Drill Bit with well-equipped testing facilities and strong technical force. With a wide range, good quality, reasonable prices and prompt delivery, our products are extensively used in oil filed, well Drilling, NO Dig filed and other industries. Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs.
We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!