Water Well 7 1/2 " Steel Tooth Tricone Rock Bit

• Customization: Available
• Customized: Customized
• Standard: AISI, API
• Model NO.: 7 1/2
• Length: Stub-length
• Type: Drill Bits
• Material: Tungsten Carbide
• Usage: Well Drilling
• Transport Package: Wooden Box
• Trademark: Superior
• Origin: Hebei
• HS Code: 82071910
• Production Capacity: 10000pieces/Year

Product Description

Glad and welcome to visit our company,you first contact is the beginning of building mutually benefit relationship,don't  hesitate to contact me,we will provide best quotation and good service, NO MOQ Limit, one unit ,the one is only make for you,welcome your inquiry and testing our bits,thank you,have a nice day!

Bit Size		Bit Type
inch	mm
5 7/8	149.2	FG214
7 1/2	190.5	FG124C,FG134C,FG244C
7 7/8	200.0	FG114,FG124,FG134
8 3/8	212.7	FG215
8 1/2	215.9	FG124W,FG134
9 1/2	241.3	FG124G
9 5/8	244.5	FG114G,FG124G,FG134G
9 7/8	250.8	FG115GW
10 5/8	269.9	FG115GW,FG125GW,FG215G,
11	279.4	FG115GW
11 5/8	295.3	FG11GW,FG125GW,FG215G
12	304.8	FG124W
12 1/4	311.2	FGT115GW,FGT125GW,FG135,FG214,FG244,FG324
13 5/8	346.1	FGT115GW,FG124W
13 3/4	349.3	FGT115W,FGT125W,FGT135W
14 3/4	374.6	FG115GW,FG125GW,FG135GW
15	381.0	FG124G,FG244G
15 1/2	393.7	FG115GW,FG125GW,FG135GW,FG215G
17 1/2	444.5	FG115GW,FG125GW,FG135GW,FG215G
19 1/4	489.0	FG115CGW,FG225CG
20	508.0	FG125CGW,FG215CGW,FG515CG,FGT515CG,FG525CG, FGT525CG,FGT545CG
22	558.8	FG125C,FG525CG,FG545CG
24	609.6	FG125C,FG525CG,FG545CG
26	660.4	FG124C,FG134C,FG525CG,FG545CG
36	914.4	FG124CW,FG525C

Recommended Drilling Parameters

IADC	WOB(KN/mm) (Bit Dia.)	RPM (r/min)	Applicable Formation
115	0.3-0.75	200-80	Very soft formations with low compressive strength and high drill-ability, such as clay, mudstone, chalk, etc.
125	0.3-0.85	200-80	Soft formations with low compressive strength and high drill-ability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
135	0.3-0.95	180-80	Soft to medium soft formations with low compressive strength and high drill-ability, such as medium soft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder inter-beds, etc.
215	0.35-0.95	180-80	Medium formations with high compressive strength, such as medium soft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder inter-beds, etc.
435 445	0.35-0.95	150-60	Very soft formations with low compressive strength and high drill-ability , such as clay, mudstone, chalk, gypsum, salt, soft shale, soft limestone, etc.
515 525	0.3-0.8	200-80	Soft formations with low compressive strength and high drill-ability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
535 545	0.35-0.9	180-80	Soft to medium formations with low compressive strength, such as medium soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive inter-beds, etc.
615 625	0.35-1.0	180-80	Medium hard formations with high compressive strength, such as hard shale, limestone, sandstone, dolomite, etc.
635	0.4-1.1	150-60	Hard formations with high compressive strength, such as sandstone, limestone, dolomite, hard gypsum, marble, etc.

   
                 
1.Cutting Structure: The wear-resistance of teeth is enhanced with premium tungsten carbide hard-facing on the tooth surfaces for steel tooth bit. The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.

2.Gauge Structure: Multiple gauge protection with gauge trimmers on the heel and gauge inserts on the gauge surface of the cone , tungsten carbide inserts and hard-facing on the shirttail increases gauge holding capability and bearing life.

3.Bearing Structure: High precision roller bearing with two thrust faces .Balls lock the cone. The leg bearing can get larger by arranging the rollers in groove of the cone hole, so it can receive more WOB ,and suitable for high RPM. Thrust faces hard-faced with wear resistant alloy. Abrasion resistance and seizure resistance of the bearing are improved.