HENGJI BIT SPECIFICATION | |
Bit Size | 7 1/2'’,190.5mm |
IADC Code | 537 |
Series | HR |
Tooth type | TCI/tungsten carbide insert |
Connection | 4 1/2 API REG PIN |
Bearing | rubber sealed bearing |
Nozzle | three jet nozzles |
Rotary Speed(rpm) | 120~50 |
Weight on Bit(KN/MM) | 0.45~1.0 |
Application | water well,oil well,HDD,exploration,etc |
Formation | Soft to medium formation with low compressive strength,such as medium soft shale,medium soft limestone,medium soft sandstone,etc. |
ADC | WOB | RPM | Applicable Formations |
(KN/MM) | (r/min) | ||
(Bit Dia) | |||
116 117 | 0.35~0.8 | 150~80 | Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk etc. |
136 137 | 0.35~1.0 | 120~60 | Soft to mesium 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 nterbeds,ect. |
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 formation with harder interbeds ect. |
246 247 | 0.4~1.0 | 80~50 | Medium hard formations with high compressive strength,such as abrasive shale.limestone,sandstone,dolomite,hard gypsum,marble,ect. |
417 437 | 0.35~0.9 | 150~70 | Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk,gypsum,salt,soft shale,soft limestone,etc. |
447 | |||
517 527 | 0.35~1.0 | 140~60 | Soft formations with low compressive strength and high drillability,such as mudstore,gypsum,salt,soft shale.soft limestone,ect. |
537 547 | 0.45~1.0 | 120~50 | Soft to medium formations with low compressive strength,such as medium soft shale,medium soft limestone,medium soft sandstone,medium formation with harder and abrasiver interbeds,ect. |
617 627 | 0.45~1.1 | 90~50 | Medium hard formations with high compressive strength,such as hard shale,limestone,sandstone,dolomite,ect. |
637 | 0.5~1.2 | 80~40 | Hard formations with high compressive strength,such as sandstone,limestone,dolomite,hard gypsum,marble,ect. |
Packaging |
Wood Box Fumigation Tray if necessary Other special package can be applied according to customer's need |
Delivery |
Prepared to deliver within 1 week, if in stock Depends on order quantity, when out of stock Transportation:By sea or air |
Regular Models