Roller Cone Bits and Diamond Bits Made in China

• After-sales Service: 18mths
• Warranty: 18mths
• Manufacturing Process: Casting
• Surface Treatment: Spray-Paint
• Operation Pressure: Atmospheric Pressure
• Material: Cast Steel
• Model NO.: PDC
• Application: Downhole Motor
• Transport Package: Export Standard
• Trademark: transtone
• Origin: China
• Production Capacity: 5000 Pieces Per Year

Product Description

Recommended drilling parametersssessing two large series products of roller cone bits and diamond bits, the manufacturer is the standard setter in oil drilling bit industry in China. Producing not less than 5,000 bits annually, it plays an important role in petroleum bit industry of China.

ROLLER CONE BITS

ROLLER CONE BIT TYPE


Product series

s	Elastomer sealed roller bearing tri-cone bit
	Non-sealed roller bearing tri-cone bit
SJ	Metal sealed bearing tri-cone bit
sv	Six-point position-stabilized motor tri-cone bit
SG	Improved sealed roller bearing tri-cone bit
SK	Air-cooling roller bearing tri-cone bit
SL	Pilot reamer
SD	Single cone bit

FOR EXAMPLE
8 1/2SVT537G

• 8 1/2: Bit diameter is 8 1/2 inches (215.9mm)
• S:Code of manufacturer
• V: Six-point position stabilization T:(GT ) Gauge trimmer
• 537: Insert bit for drilling in soft to medium formation with low compressive strength.
• G:/Gauge/body protection

OPTIONAL FEATURES

Diamond Compacts (GG)
For high abrasive formations, the diamond compacts can enhance the gauge protection.
Six-point position stablization structure (SV) 
Bit leg back is designed with specific integrated structure that allows nozzle boss and leg to contact with borehole wall, realizing six-point position stabilization, which makes the drilling more stable, avoids teeth overload, and achieve a high-quality well bore.
Widened crest insert (K)
The widened crest insert is 15% wider than standard insert. It can cut more rocks as penetrating so as to increase the ROP.
Shirttail protection (G)
More tungsten carbide inserts are placed in the shirttail to reduce the wear in the abrasive formation. It can protect gauge and increase stability.
 Extended nozzle (E)
The extended nozzle can provide better hydraulics for the bit and increase the ROP in the soft formation.
 

SV SERIES SIX-POINT POSITION STABILIZATION MOTOR BIT

 CUTTING STRUCTURE
Reinforcing the comprehensive mechanical properties of inserts by using premium tungsten carbide insert with new formula and new techniques.
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 hardfacing on the shirttail increases gauge holding capabilities and seal protection.
BEARING STRUCTURE 
High precision journal bearing with two thrust faces. Balls lock cone. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved, and suitable for high rotary speed.
SEAL AND LUBRICATION
Advanced metal face seal lowers overall seal torque and improves seal life. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.
SIX-POINT POSITION STABLIZATION STRUCTURE
Bit leg back is designed with specific integrated structure, which allows nozzle boss and leg contact with borehole wall, greatly reducing bit vibration, protecting the cutting structure from damaging blows and keeping good borehole quality. The surface of nozzle boss are inserted with tungsten carbide, it can protect bit and satisfy the requirements of high ROP drilling to hydraulic system, increasing the integrate performance.
 PRODUCT APPLICATIO
It is applicable for downhole motor and high speed applications, and is the ideal tool for drilling directional and horizontal wells.
CURRENT AVAILABILITY

8	1/2	215.9	SVT437G	SVT447G	SVT517G	SVT527G	SVT537G	SVT547G	SVT617G
9	1/2	241.3	SVT437G	SVT447G	SVT517G	SVT527G	SVT537G	SVT547G	SVT617G
12	1/4	311.1	SVT437G	SVT447G	SVT517G	SVT527G	SVT537G	SVT547G	SVT617G

 

 

IADC	Recommendation WOB(Kn/mm ) Rotary                    speed(r/min)		Applicable formation
437 447	0.35-0.9	240~70	Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, gypsum, salt, soft shale, soft limestone, etc.
517527	0.35-1.0	220~60	Soft formations with low compressive strength, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
537 547	0.45-1.0	220~50	Soltto medium formations with low compressive strength, such as medium soft shale, medium soil limestone, medium sof! sandstone, medium formation with harder and abrasiver interbeds, etc.
617	0.45-1.1	200 ~ 50	Medium hard formations with high compressive strength, such as hard shale, limestone, sandstone, dolomite, etc.

Note: The upper limits of WOB and RPM in above table should not be used simultaneity.

SJ SERIES METAL SEALED BEARING BIT
CUTTING STRUCTURE 
Enhancing the wear-resistance of teeth with high-density premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit. Reinforcing the comprehensive mechanical properties of inserts by using premium tungsten carbide insert with new formula and new techniques for insert bit.
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 hardfacing on the shirttail increases gauge holding capabilities and seal protection.
BEARING STRUCTURE 
High precision journal bearing with two thrust faces. Balls lock cone. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved, and suitable for high rotary speed.
SEAL AND LUBRICATION 
The advanced metal seal package consists of two metal seals and two elastic rubber energizers. Energizers ensure good contact being kept on the two sealing surfaces of metal rings through elastic force generated by compression, and achieves the bearing sealing. In the drilling, the metal seals are relatively dynamic, and the energizers are static. This will increase the reliability and durability of bearing seal. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.
PRODUCT APPLICATION
It is applicable for downhole motor and high speed rotary applications.


S SERIES ELASTOMER SEALED JOURNAL BEARING BIT
CUTTING STRUCTURE
Enhancing the wear-resistance of teeth with high-density premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit. Reinforcing the comprehensive mechanical properties of inserts by using premium tungsten carbide insert with new formula and new techniques for insert bit.
AUGE STRUCTURE
Multiple gauge protection with gauge trimmers on the heel of cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capabilities and seal protection.
BEARING STRUCTURE
High precision journal bearing with two thrust faces. Balls lock cone. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved.
SEAL AND LUBRICATION
Premium HNBR O-ring, best seal compression and radial seal structure can enhance the seal performance. The pressure
compensator system and advanced grease can greatly increase the lubricating reliability. 
PRODUCT APPLICATION
It can absorb high WOB in the conventional drilling. It is applicable for various formations by matching cutting structure with different teeth shape, teeth density and teeth exposure height.
CURRENT AVAILABILITY

 

 

BIT SIZE		BIT TYPE
IN	MM
31/2	88.9	S527C
4 5/8	117.5	S126 S517
4 3/4	120.7	S116C
5 7/8	149.2	S216 S537 S547 S637
6	152.4	S117W S216 S246 S517 S547
6 1/4	158.8	S127W S247 S517 S527 S547 S637
6 1/2	165.1	S127W S217 S517 S537
6 3/4	171.5	S116GW S447 S537
7 1/2	190.5	S127W S217 S517 ST517 S527 ST527 S617
7 7/8	200.0	S117GW S437G S517G S527G S537G S547G S547GY S617GY S627G S637GY
8 3/8	212.7	S217 S527 S547
8 1/2	215.9	ST117W ST127W S137W S217 S247 ST437GK ST447GK ST517GK ST527GK ST537G ST547G S617G S627G S637G
8 3/4	222.3	S116GW S437GK ST517G S537G S627G
9 1/2	241.3	ST117CW ST127GW ST417G ST437G ST517G ST527G ST537G ST547G ST617G
9 5/8	244.5	ST437G ST517G S527G S537G S547G S617G
9 7/8	250.8	S117GW ST417GK ST437G ST517G S527G S537G S547G
10	254.0	S126W
10 5/8	269.9	ST127GW S217G ST437G ST517G ST547G
11	279.4	S117GW S517G S537G
115/8	295.3	S117GW S127GW S137GW S217G ST417G ST517G ST537G ST547G

 

 

BIT SIZE		BIT TYPE
IN	MM
12	304.8	S126W S216 ST517 ST537 ST547 S617
121/4	311.2	ST117W S127W S137 ST417GK ST437G ST517G ST527G ST537G ST547G ST617GY S627G S637G
12 3/8	314.0	ST437G ST517G ST527G ST537G ST547G ST617GY
12 15/32	316.5	ST437G ST517G ST527G ST537G ST547G ST617GY S627G S637G
131/8	333.4	ST437G ST517G ST527G ST537G ST547G
13 5/8	346.1	S437G S517G S537G
13 3/4	349.3	S437G S517G S537G
14 3/4	374.7	S117GW S127GW S137G S517G S527G
151/2	393.7	S127GW S217G S517G S527G S537G S547G
16	406.4	ST117GW ST127GW S127G ST517G ST527G S535 ST537G ST547G S545
171/2	444.5	ST117GW S127W S137 ST437G ST517G ST527G ST537G ST547G
18	457.2	ST547G
181/2	469.9	S547G

IADC		Recommendation		APPLICABLE FORMATION
		WOB(KN/mm)	Rotary speed(r/min)
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, soft shale, soft limestone, etc.
136	137	0.35-1.0	120-60	Soft tomedinsoit ioimalions withlow compressive strength arrifiji drilatxity.suchas medunsoit shale, hardgypsum, medium soft Inestone, medium soft sandstone, soil ioimationwithharderinieibeds.etc.
216	217	0.41.0	100-60	Medium formations with high compressive strength, such as medium soft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds, etc.
246	247	0.41.0	80-50	Medium hard formations with high compressive strength, such as abrasive shale, limestone, sandstone, dolomite, hard 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, mudstone, chalk, gypsum, salt, soft shale, soft limestone, etc.
517	527	0.351.0	140-60	Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
537	547	0.45-1.0	120-50	Soft to medium fo rmations with low compressive strength, such as medium soft shale, medium soft limestone, medium soil sandstone, medium formation with harder and abrasiver inteibeds, etc.
617	627	0.45-1.1	90-50	Medium hard formations with high compressive strength, such as hard 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.

S SERIES ELASTOMER SEALED ROLLER BEARING BIT

 

CUTTING STRUCTURE
Enhancing the wear-resistance of teeth with high-density premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit. Reinforcing the comprehensive mechanical properties of inserts by using premium tungsten carbide insert with new formula and new techniques for insert bit.
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 hardfacing on the shirttail increases gauge holding capabilities and seal protection. 
BEARING STRUCTURE
High precision roller bearing with two thrust faces. Balls lock cone. Thrust faces hardfaced with friction reducing alloy. Abrasion resistance and seizure resistance of the bearing are improved.
SEAL AND LUBRICATION
Premium HNBR O-ring, best seal compression and radial seal structure can enhance the seal performance. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.
 PRODUCT APPLICATION

It is applicable for various formations, and achieve high rotating speed under low to medium WOB applications.
CURRENT AVAILABILITY

SIZE		BIT TYPE
IN	MM
5 7/8	149.2	S214
7 1/2	190.5	S124C S134C S244C
7 7/8	200.0	S124 S124 S134
8 3/8	212.7	S215
8 1/2	215.9	S124W S134
9 1/2	241.3	S124G
9 5/8	244.5	S114G S124G S134G
9 7/8	250.8	S115GW
9 1/2	241.3	S124G
10 5/8	269.9	S115GW S125GW S215G
11	279.4	S115GW
115/8	295.3	S115GW S125GW S215G
12	304.8	S124W
12 1/4	311.2	ST115GW ST125GW S135 S214 S244 S324
13 5/8	346.1	ST115GW S124W
13 3/4	349.3	ST115W ST125W ST135W
14 3/4	374.6	S115GW S125GW S135GW
15	381.0	S124G S244G
15 1/2	381.0	S115GW S125GW S135GW S215G
17 1/2	444.5	S115GW S125GW S135G S215G
19 1/4	489.0	S115CGW S225CG
20	508.0	S125CGW S215CGW S515CG ST515CG S525CG ST525CG ST545CG
22	558.8	S125C
24	609.0	S125C
26	660.4	S124C S134C S525CG
36	914.4	S124CW

 

IADC		Recommendation		APPLICABLE FORMATION
		WOB(KN/mm)	Rotary speed(r/min)
114	115	0.3-0.75	180-60	Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, etc.
124	125	0.3-0.85	180-60	Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
134	135	0.3-0.95	150-60	Soitto medimsoit iormalionswilhlow compresswe strenglhandN^i drilatifity,su;has medunsolt shale, hard gypsum, medium soil linestone, medunsoit sandstone, soft formation with harder iiterbeds.etc.
214	215	0.35-0.95	150-60	Medium formations with high compressive strength, such as medium soft shale, hard gypsum, fnediumsoft limestone, medium soft sandstone, soft formation with harder interbeds, etc.
244		0.35-0.95	150-50	Medium hard formations with high compressive strength, such as abrasive shale, limestone,sandstone, dolomite, hard gypsum, marble, etc.
324		0.4-1.0	120-50	Medium abrasive formations, such as abrasive shale, limestone, sandstone, dolomite, hard gypsum, marble, etc.
515	525	0.35-0.9	180-60	Soft formations with low compressive strength and high drillability, such as mudstone, gypsum,salt, soft shale, soft limestone, etc.
535	545	0.35-.0	150-60	Soft lo medium formations with low compressive strength, such as medium soft shale,medium soft limestone, medium soft sandstone, medium formation with harder and abrasiver interbeds, etc.
615	625	0.45-1.1	120-50	Medium hard formations with high compressive strength, such as hard shale, limestone, sandstone, dolomite, etc.
635		0.5-1.2	100-40	Hard formations with high compressive strength, such as sandstone, limestone, dolomite, hard gypsum, marble, etc.

S Series Non-Sealed Roller Bearing Bit

CUTTING STRUCTURE
Reinforcing the wear-resistance of teeth by using with premium tungsten carbide hardfacing on the tooth surfaces.
BEARING STRUCTURE
Non-sealed roller bearing. Drilling fluid can enter the bearing directly for cooling.
Balls lock cone,that lowers the accident of cone-dropping to minimum.

PRODUCT APPLICATION
It is applicable for the shallow well, water well and geothermal well.

CURRENT AVAILABILITY

SIZE		BIT TYPE
IN	MM
4 1/4	107.9	S131C S321C
4 5/8	117.5	S241C
4 3/4	120.6	S241C
5 5/8	142.9	S121	S241	S321
6	152.4	S211
6 1/4	158.7	S121	S241	S321
6 3/4	171.4	S121	S241	S321
7 1/2	190.5	S121
7 7/8	200.0	S121	S131	S241	S321
9 7/8	250.8	S121	S211	S241	S321
12 1/4	311.1	S211

SG SERIES SEALED IMPROVED-ROLLER BEARING BIT

 CUTTING STRUCTURE
Enhancing the wear resistance of teeth with high-density premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit. Reinforcing the comprehensive mechanical properties of inserts by using premium tungsten carbide insert with new formula and new techniques for insert bit.
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 hardfacing on the shirttail increases gauge holding capabilities and seal protection.
BEARING STRUCTURE
Roller bearing structure. Balls lock cone. Size of bearing journal is made larger by arranging the rollers in grooves recessed in the cone body, so it can load more WOB, and suitable for high rotary speed. The thrust surface with hardfacing and anti-wear processing increase the abrasion resistance and seizure resistance of the bearing.
SEAL AND LUBRICATION
Premium HNBR O-ring, best seal compression and radial seal structure can enhance seal performance. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.
PRODUCT APPLICATION
It can load higher WOB and faster rotary speed than conventional bits. It is applicable for high speed application.
CURRENT AVAILABILITY

SIZE		BIT TYPE
INCH	MM
16	406.4	SGT115GW
17 1/2	444.5	SGT115GW SG125G SG135G SGT435G SGT515G SGT525G SGT535G SGT545G SGT615G SGT625G SGT635G
20	508.0	SG125CGW SG215CGW

IADC	Recommendation		Applicable formation
	WOB (KN/MM)	Rotary speed (r/min)
115	0.3-0.75	200-80	Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, etc.
125	0.3-0.85	200-80	Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
135	0.3-0.95	180-80	Soft to medium soil iormalions with low compressive si renglh and high drllatifity, such as merlin soft shale, hard gypsum, mediunsolt Smeslone, medium solt sandstone, soft iofmalionwllh harder interbeds, elc.
215	0.35-0.95	180-80	Medium formations with high compressive strength, such as fnediumsoft shale, hard gypsum, medium soft lifnestone, medium soft sandstone, soft formation with harder interbed, etc.
435 445	0.35-0.95	150-60	Medium formations with high compressive strength .such as medium soft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds, etc.
515	0.3-0.8	200-80	Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, gypsum, salt, soft shale, soft limestone, etc.
535 545	0.35-0.9	180-80	Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc.
615625	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.

 

SK SERIES AIR COOLING ROLLER BEARING BIT

CUTTING STRUCTURE
Reinforcing the comprehensive mechanical properties of inserts by using premium tungsten carbide insert with new formula and new techniques.
GAUGE STRUCTURE
Gauge protection with gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capabilities.
BEARING STRUCTURE
Air cooling roller bearing package. Balls lock cone, that lowers the accident of cone-dropping to minimum.PRODUCT APPLICATION
It is applied for mining operation.

SD SERIES SINGLE CONE BIT

CUTTING STRUCTURE
In response to the fact that compacts in different areas on the cone have different cutting actions, conical inserts are placed in permanent contact area and wedge inserts are placed in alternative contact area so that the drilling efficiency is greatly improved. Wear resistance of cutting structure is enhanced by setting PDC cutters in the permanent contact area of the cone where inserts are almost severely worn. Carbide inserts are equipped on cone top surface to protect cone base material from erosion.
GAUGE STRUCTURE
With active cutting gauge protection inserts on bit body, the bit has good gauge protection and updrill capabilities.
BEARING STRUCTURE
High precision journal bearing. Balls lock cone. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy. Abrasion resistance and seizure resistance of the bearing are improved. Compared with tricone bit, the bearing size is bigger, so it can receive higher WOB and high reliability.
HYDRAULIC DESIGN
Small angled lower watercourse design increased shirttail thickness and can effectively prevent watercourse erosion. Optimized hydraulics structure improves the cleaning capability and increases ROP.
PRODUCT APPLICATION
It is suitable for sidetracking, deep well drilling and old well repairing.

SL SERIES PILOT REAMER
CUTTING STRUCTURE
Reamer mainly consists of four or more cones. Steel tooth with premium tungsten carbide hardfacing or premium tungsten carbide inserts of new formula and new techniques is utilized in the cutting structure,and increases the service life of reamer. The pilot is roller cone bit.
SEAL AND LUBRICATION
High performance HNBR 0-ring for bearing seal and advanced grease for lubrication.
PRODUCT APPLICATION
It is applicable for the large size well, mining and infrastructure applications.

ROLLER CONE BITS

OPTIONAL FEATURES

UP DRILL CUTTERS(A) 
The Updrill cutters can efficiently solve the problem of hole shrinkage in the sloughing and instable formations.
WEAR KNOT (K)
Insert the tungsten carbide wear knot behind the PDC cutters, it can control the cutting depth and effectively reduce the torque response.
NATURAL DIAMOND UPDRILL (NU)
Natural diamond gauge can enhance the gauge durability in the abrasiv-e formations.
SEALING CORE (H)
Sealing core can ensure the core recovery in the fractured formations.
BACK-UP CUTTERS ( M)
This kind of cutters can improve the anti-wear ability and effectively increase the durability.

PDC BIT SERIES
GF4434

Low Cutter Density
Applicable to soft and sticky formations with low compressive strength.
Short Parabolic Profile
Short parabolic profile can increase penetration rate. The unique design can balance the load distribution on the nose.
Strengthened Cutter Density
The design can generate longer cuttings during the drilling.
Tungsten Carbide Matrix
This kind of Matrix can minimize the surface erosion of bit, and is suitable for high flow application.

BIT SPECIFICATION

Size	IADC	Blades	Nozzles Cutter size Gauge length Junk slot volume API Pin
in			in	in              in^2	in
6	M332	4	4           1/2	1.5             4.1	3 1/2
8 1/2	M332	4	4           1/2	2 16.8	4 1/2

Recommended drilling parameters

Size	Flow rate	RPM	WOB
in	L/s	rpm	KN
6	14-25	60~240	8-45
8 1/2	25~38	60 ~ 240	20~100

GF4654

 

Soft Formation Application
4 Blades, suitable for drilling in soft formations with low compressive strength.
Prolong Bit Life
The self-stabilization design reduces the vibration and lowers the damage to the cutters.
High ROP
Unique cutter layout and location can keep cutting edge sharp to obtain the maximum ROP.
Multi-function Hydraulics
The deep-blade design can get high ROP in soft formations and can better cool the bit in the hard and abrasive formations.

BIT SPECIFICATION

Size	IADC	Blades	Nozzles	Cutter size	Gauge length	Junk slot volume	API API Pin
in				in	in	in^2	in
81/2	M121	4	4	3/4	3	18.3	4 1/2
91/2	M121	4	4	3/4	3.5	29.2	6 5/8
121/4	M121	4	4	3/4	3.3	45.6	6 5/8

Recommended drilling parameters

Size	Flow rate	RPM	WOB
in	L/s	rpm	KN
8 1/2	25-38	60-240	13-66
9 1/2	30-44	60-250	13-90
12 1/4	38-60	60-250	13-100

GF5636
 
SoftTo Medium-hard Formation Application
5 blades design is suitable for soft to medium formations, GF technology extends the application range to hard formations.
Anti-whirl Technology
The advanced simulation technology enables the bit more stable in drilling It can drill interbedded formations without serious broken and wear as conventional PDC design.
Tapered Blade
Strengthened blade and lengthed junk slot can get high ROP in soft formation and better cool the bit in the hard and abrasive formations.

BIT SPECIFICATION

Size	IADC	Blades	Nozzles	Cutter size	Gauge length	Junk slot volume
							API Pin
in				in	in	in^2	in
8 1/2	M221	5	5	3/4	3	18	4 1/2
9 1/2	M221	5	5	3/4	3.5	25.6	6 5/8
121/4	M221	5	7	3/4	3	41.4	6 5/8

Recommended drilling parameters

Size	Flow rate	RPM	WOB
in	L/s	rpm	KN
8 1/2	25-38	60330	1349
9 1/2	3044	60300	1380
12 1/4	38-60	60-300	1798

GF6645

Soft to Medium-hard Formation Application
5 Blades, suitable for drilling in soft to medium-hard formation.
Anti-whirl Technology
The advanced simulation technology enables bit more stable in drilling. It can drill interbed formation without serious broken and wear as conventional PDC design.
Tapered Blades
Strengthen blades and lengthened junk slots can get high ROP in soft formations and better cooling the bit in hard and abrasive formations.
BIT SPECIFICATION

Size	IADC	Blades	Nozzles	Cutter size	Gauge length	Junk slot volume	API API Pin
in				in	in	in^2	in
81/2	M221	6	5	1/2	3	18	4 1/2
91/2	M221	6	5	1/2	3.5	25.6	6 5/8
121/4	M221	6	7	1/2	4	41.4	6 5/8

Recommended drilling parameters

Size	Flow rate	RPM	WOB
in	L/s	rpm	KN
8 1/2	25-38	60330	1349
91/2	3044	60300	1380
121/4	3860	60-300	1798

GF6445

HighROP
Unique cutter arrangement and location can keep cutting edge sharp in the drilling to obtain the maximum ROP.
Spiral And Asymmetric Blade Design
Specific cutter layout enhances the bit stability and can get more footage in interbedded formations application.
Multi-function Hydraulics
The deep slot and straight blade design can get the high ROP in soft formations and can better cool the bit in the hard and abrasive formations.

BIT SPECIFICATION

Size	IADC	Blades	Nozzles	Cutter size	Gauge length	Junk slot volume
							API Pin
in				in	in	in^2	in
6	M332	6	4	1/2	2	9.4	3 1/2
81/2	M332	6	6	1/2	3	16	41/2
121/4	M334	6	6	1/2	4	36.9	6 5/8

Recommended drilling parameters

Size	Flow rate	RPM	WOB
in	L/s	rpm	KN
6	1425	60-400	8-45
81/2	2538	60-300	20-100
12 1/4	2556	60-240	22-150

GF6637

• Medium parabolic crown profile and heavy density cutter layout can get high ROP in the medium hard and abrasive formations.
• Deep blade can get high ROP in soft to medium hard formation and effectively cool the bit in the hard and abrasive formations.
• High intensified gauge design can get longer footage in the hard and abrasive formations as steering application.

BIT SPECIFICATION

Size	IADC	Blades	Nozzles	Cutter size	Gauge length	Junk slot volume	API Pin
in				in	in	in^2	in
81/2	M323	6	6	3/4	3	15.8	4 1/2
91/2	M323	6	6	3/4	3.5	20.2	6 5/8
121/4	M323	6	8	3/4	4	30	6 5/8

Recommended drilling parameters

Size	Flow rate	RPM	WOB
in	L/s	rpm	KN
81/2	2538	60-330	13-75
9 1/2	2844	60-350	13-88
12 1/4	3860	100-350	22-111

GF7457H

Hard Formation Application
Medium parabolic crown profile and heavy density cutter layout provide the high ROP in high compressive strength and high abrasive formations.
High ROP
Unique cutter arrangement and location can keep cutting edge sharp in the drilling to obtain the maximun ROP.
Multi-function Hydraulics
The deep blade design can get high ROP in medium hard to hard formations and can better cool the bit in the hard and abrasive formations.

BIT SPECIFICATION

Size		Blades	Nozzles	Cutter size	Gauge length	Junk slot volume	API Pin
in				in	in	in^2	in
6	M333	7	5	1/2	2	5	3 1/2
81/2	M432	7	6	1/2	3	16	4 1/2
9 1/2	M433	7	6	1/2	3.5	16.2	6 5/8
121/4	M433	7	8	1/2	4	36.9	6 5/8

Recommended drilling parameters
 

Size	Flow rate	RPM	WOB
in	L/s	rpm	KN
6	1425	60 ~ 350	8-45
8 1/2	2538	60-350	13-115
91/2	3044	60-350	17-129
12 1/4	38-60	60 - 350	22-160

GF8447HU

Hard Formation Application
Short parabolic crown profile and medium density cutter layout provide the superior ROP in soft to medium formations with abrasive interbeds.
High ROP
Unique cutter layout and back rake plot can keep cutting edge sharp in the drilling to obtain the maximun ROP.
Maximum Durability
The integrated cutter density design provides durability in the hard formation application.
Multi-function Hydraulics
The deep blade design can get the high ROP in medium to hard formations and can better cool the bit in the hard and abrasive formations.

BIT SPECIFICATION

Size	IADC	Blades	Nozzles	Cutter size	Gauge length	Junk slot volume	API API Pin
in				in	in	in^2	in
61/2	M433	6	34	1/2	2.5	5.09	3 1/2
81/2	M433	8	68	1/2	3	11	4 1/2
121/4	M433	8	710	1/2	4	17.6	6 5/8

Recommended drilling parameters

Size	Flow rate	RPM	WOB
in	L/s	rpm	KN
6 1/2	1016	60-240	8-45
8 1/2	2838	60-300	20-100
12 1/4	3856	60-350	44-178