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Ribone
Ribone

PDC drill bit IADC code table

 Type of Bit BodyGeological Formation TypeCuting CtructureCrown Shape
CodeCharacter DescriptionCode Character DescriptionCodeCharacter DescriptionCodeCharacter Description
MMatrix body1Very soft-Highly drillable formations such as clay, marl, gumbo and unconsolidated sands.2PDC cutter,19 mm to 13 mm (including 19 mm) 1Short Fishtail
   S   Steel body3

PDC cutter,13 mm to 8 mm (including 13 mm)

2

Short Profile
   

   D   Diamond4Less than or equal to 8 mm3Medium Profile
2

Soft and soft sticky-Highly drillable formations such as clay, marl, gumbo and unconsolidated sands.

2PDC cutter,19 mm to 13 mm (including 19 mm)4Long Profile
3PDC cutter,13 mm to 8 mm (including 13 mm)
4Less than or equal to 8 mm
3Soft-medium-Low compressive strength sands, shales and anhydrites with hard layers intermixed.
   
2PDC cutter,19 mm to 13 mm (including 19 mm)
3PDC cutter,13 mm to 8 mm (including 13 mm)
For example4Less than or equal to 8 mm
CodeCharacter description4Medium-Moderate compressive strength sand, chalk, anhydrite and shale.
   
2PDC cutter,19 mm to 13 mm (including 19 mm)
SSteel body3PDC cutter,13 mm to 8 mm (including 13 mm)
4Medium4Less than or equal to 8 mm
3PDC cutter,13mm5   non
4Long Profile6

Medium hard-Higher compressive strength with non or semi-sharp sand, shale, lime and anhydrite.

1Natural diamond
2TSP
3Blending cutters
7

Hard-High compressive strength with sharp layers of sand or siltstone.
   
 

1Natural diamond
2   TSP
3Blending cutters
8

Extremely hard-Dense and sharp formations such as quartzite and volcanic rock.

1Natural diamond
4Impregnated diamond

Tricone drill bit IADC code table

Bit SeriesGeological Formation Type

Bearing Type of the Tricone

SeriesHardness of rock formation Further rock formation Standard roller bearingsAir cooled bearingsOpen bearing with gauge protectionStandard sealed roller bearings

Sealed roller bearing with gauge protection.

Standard sealed journal bearingSealed journal bearing with gauge protection
   1      2      3      4      5      6      7  
Milled Bit    1   Very soft-Highly drillable formations such as clay, marl, gumbo and unconsolidated sands.1
2
3
4
   2   Soft and soft sticky-Highly drillable formations such as clay, marl, gumbo and unconsolidated sands.1
2
3
4
   3   Soft-medium-Low compressive strength sands, shales and anhydrites with hard layers intermixed.1
2
3
4
Insert Bit    4   Medium-Moderate compressive strength sand, chalk, anhydrite and shale.1
2
3
4
   5   Medium hard-Higher compressive strength with non or semi-sharp sand, shale, lime and anhydrite.1
2
3
4
   6   Medium hard-Higher compressive strength with non or semi-sharp sand, shale, lime and anhydrite.1
2
3
4
   7   Hard-High compressive strength with sharp layers of sand or siltstone.1
2
3
4
   8   Extremely hard-Dense and sharp formations such as quartzite and volcanic rock.1
2
3
4

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