9.5" IADC321 steel tooth tricone bit

Basical Specification Size of Rock Bit4 1/2”6 3/4”7”9 1/2”12” 15”114.3mm171.4mm177.8mm241.3mm304.8mm 381 mm Thread Connection2 3/8” API reg pin3 1/2”API reg pin3 1/2” API reg pin6 5/8”API reg pin6 5/8”API reg pin7 5/8” API reg pinMake up torque6.7-7.5KN.M8.5-12.2KN.M38-43.4KN.M46.1-54.2KN.M IADC Code 321 Factory Series LYB series Rubber Bearing Tricone Rock Bit Operating ParametersWOB(Weight On Bit) 0.8-1.4 KN/MMRPM 200~80Formation Hard with high compressive strength and semi-abrasiveness, such as hard limestone, hard sandstone and dolomite,etcRecommended Drilling ParametersIADCWOB(kn/mm)RRM(r/min)Applicable Formations116 1170.35~0.8150~80Very soft formations with low compressive strength and high drillability.such as clay,mudstone,chalk,etc.126 1270.35~0.9150~70Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,salt,soft shale,soft limstone,etc.136 1370.35~1.0120~60Soft 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 2170.4~1.0100~60Medium 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 2470.4~1.080~50Medium hard formations with high compressive strength,such as abrasive shale,limestone,sandstone,dolomite,hadr gypsum,marble,etc.417 437 4470.35~0.9150~70Very soft formations with low compressive strength and high drillability,such as clay,gypsum,salt,soft shale,soft limestone,etc.517 5270.5~1.0140~60Soft formations with low compressive strength ang high drillability such as mudstone,gypsum,salt,soft shale,soft limestone,etc.537 5470.45~1.0120~50Soft 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 6270.45~1.190~50Medium hard formations with high compressive strength such as hadr shale,limestone,sandstone,dolomite,etc.6370.5~1.280~40Hard 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

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Steel Tooth Tricone Bit

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Steel Tooth Tricone Bit

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Description

Basical Specification
Size of Rock Bit	4 1/2”	6 3/4”	7”	9 1/2”	12”	15”
Size of Rock Bit	114.3mm	171.4mm	177.8mm	241.3mm	304.8mm	381 mm
Thread Connection	2 3/8” API reg pin	3 1/2” API reg pin	3 1/2” API reg pin	6 5/8” API reg pin	6 5/8” API reg pin	7 5/8” API reg pin
Make up torque	6.7-7.5KN.M	8.5-12.2KN.M		38-43.4KN.M		46.1-54.2KN.M
IADC Code	321
Factory Series	LYB series Rubber Bearing Tricone Rock Bit
Operating Parameters
WOB(Weight On Bit)	0.8-1.4 KN/MM
RPM	200~80
Formation	Hard with high compressive strength and semi-abrasiveness, such as hard limestone, hard sandstone and dolomite,etc

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