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 EXAMPLE8 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 FEATURESDiamond 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 BITCUTTING 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 STRUCTUREMultiple 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 APPLICATIONIt is applicable for downhole motor and high speed rotary applications.
S SERIES ELASTOMER SEALED JOURNAL BEARING BITCUTTING STRUCTUREEnhancing 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 STRUCTUREMultiple 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 STRUCTUREHigh 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 LUBRICATIONPremium 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 APPLICATIONIt 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 STRUCTUREReinforcing the wear-resistance of teeth by using with premium tungsten carbide hardfacing on the tooth surfaces.BEARING STRUCTURENon-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 STRUCTUREEnhancing 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 STRUCTUREMultiple 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 STRUCTURERoller 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 LUBRICATIONPremium 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 APPLICATIONIt 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 STRUCTUREReinforcing the comprehensive mechanical properties of inserts by using premium tungsten carbide insert with new formula and new techniques.GAUGE STRUCTUREGauge protection with gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capabilities.BEARING STRUCTUREAir cooling roller bearing package. Balls lock cone, that lowers the accident of cone-dropping to minimum.PRODUCT APPLICATIONIt is applied for mining operation.
SD SERIES SINGLE CONE BIT
CUTTING STRUCTUREIn 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 STRUCTUREWith active cutting gauge protection inserts on bit body, the bit has good gauge protection and updrill capabilities.BEARING STRUCTUREHigh 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 DESIGNSmall angled lower watercourse design increased shirttail thickness and can effectively prevent watercourse erosion. Optimized hydraulics structure improves the cleaning capability and increases ROP.PRODUCT APPLICATIONIt is suitable for sidetracking, deep well drilling and old well repairing.SL SERIES PILOT REAMERCUTTING STRUCTUREReamer 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 LUBRICATIONHigh performance HNBR 0-ring for bearing seal and advanced grease for lubrication.PRODUCT APPLICATIONIt is applicable for the large size well, mining and infrastructure applications.ROLLER CONE BITSOPTIONAL FEATURESUP 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 SERIESGF4434Low Cutter DensityApplicable to soft and sticky formations with low compressive strength.Short Parabolic ProfileShort parabolic profile can increase penetration rate. The unique design can balance the load distribution on the nose.Strengthened Cutter DensityThe design can generate longer cuttings during the drilling.Tungsten Carbide MatrixThis 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 in2 | 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 Application4 Blades, suitable for drilling in soft formations with low compressive strength.Prolong Bit LifeThe self-stabilization design reduces the vibration and lowers the damage to the cutters.High ROPUnique cutter layout and location can keep cutting edge sharp to obtain the maximum ROP.Multi-function HydraulicsThe 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 | in2 | 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 Application5 blades design is suitable for soft to medium formations, GF technology extends the application range to hard formations.Anti-whirl TechnologyThe 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 BladeStrengthened 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 | in2 | 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 |
GF6645Soft to Medium-hard Formation Application5 Blades, suitable for drilling in soft to medium-hard formation.Anti-whirl TechnologyThe advanced simulation technology enables bit more stable in drilling. It can drill interbed formation without serious broken and wear as conventional PDC design.Tapered BladesStrengthen 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 | in2 | 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 | in2 | 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 | in2 | 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 | in2 | 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 |
GF8447HUHard Formation ApplicationShort parabolic crown profile and medium density cutter layout provide the superior ROP in soft to medium formations with abrasive interbeds.High ROPUnique cutter layout and back rake plot can keep cutting edge sharp in the drilling to obtain the maximun ROP.Maximum DurabilityThe integrated cutter density design provides durability in the hard formation application.Multi-function HydraulicsThe 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 | in2 | 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 |
ZHenjiang Boral Machinery and Equipment Co Ltd was established in 2014 by people with long term technical experience in elevator, escalator and oil and energy equipment field both in China domestic and international market.
We offer our clients solutions for both complete elevator and escalator package with our BORAL brand and most kinds of high quality elevator and escalator spares for other elevator and escalator manufacturer in the world. We design and develop our BORAL elevator with latest and advanced technology of elevator and escalator technology in the world. Our R & D department keeps the same pace with the world technology development of elevator and escalator. Our production factory in China passed ISO 9001: 2008 quality management system and produce elevator and escalator strictly complying with latest version of EN18 standard. We are closely cooperating with our production factory and offer our clients high quality and reliability elevator and escalator under BORAL quality control system. Apart from our high standards of quality assurance, BORAL continues to provide our trademark excellent service, before and after sales for our elevator and escalator.
Besides that, we also have our full set lift modernization product for our agent in the world.
The satisfaction of our client is our permanent target. We would like to establish long-term relations with all our clients in the world on win-win base.
