6 1/2Inch three wings rock roller TCI tricone bits for hard formation drilling
6 1/2Inch three wings rock roller TCI tricone bits for hard formation drilling
Shop our high-quality 6 1/2 three-wing rock roller TCI tricone bits for drilling hard formations. As a factory, we offer reliable products for efficient drilling.
Application The roller cone bit is the most widely used tool in petroleum drilling and geological drilling. Tricone bit has the function of impacting, crushing and shearing rock in formation, so it can adapt to soft, medium and hard formation. The cone bit can be divided into milling (steel teeth) cone bit and TCI cone bit according to the type of teeth. Characteristics According to the cutting material, it can be divided into steel tooth (milling tooth) and tungsten carbide insert (TCI) tooth roller cone bit. The TCI Tricone bits drilling for medium to hard rock formation. The medium formation TCI tricone bits features aggressive chisel tungsten carbide inserts on the heel rows and inner rows. This design provides a fast drilling rate and added cutting structure durability in medium to medium hard formations. The HSN rubber O-ring provides adequate sealing for bearing durability. The hard formation TCI tricone bits can be used to drill hard and abrasive formation. Wear resistance tungsten carbide inserts are used in the outer rows to prevent loss of bit gauge. Maximum numbers of hemispherical shaped inserts are used in all rows to provide cutter durability and long life. Tricone bits StructureGuidance of Tricone Bit Choice
IADC
WOB(KN/mm)
RPM(r/min)
APPLICABLE FORMATIONS
114/116/117
0.3~0.75
180~60
Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, etc.
124/126/127
0.3~0.85
180~60
Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc.
134/135/136/137
0.3~0.95
150~60
Soft to medium 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 interbed, etc.
214/215/216/217
0.35~0.95
150~60
Medium formations with high compress strength, such as medium soft shale, hard gypsum , medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc.
227
0.35~0.95
150~50
Medium hard formations with high compressive strength, such as abrasive shale, limestone, sandstone, dolomite, hard gypsum, marble,etc
Note: The upper limits of WOB and RPM in above table should not be used simultaneously.
Guidance of tricone Bits ChoiceTricone Bits Tooth Type Bits Size
Characteristics According to the cutting material, it can be divided into steel tooth (milling tooth) and tungsten carbide insert (TCI) tooth roller cone bit. The TCI Tricone bits drilling for medium to hard rock formation. The medium formation TCI tricone bits features aggressive chisel tungsten carbide inserts on the heel rows and inner rows. This design provides a fast drilling rate and added cutting structure durability in medium to medium hard formations. The HSN rubber O-ring provides adequate sealing for bearing durability. The hard formation TCI tricone bits can be used to drill hard and abrasive formation. Wear resistance tungsten carbide inserts are used in the outer rows to prevent loss of bit gauge. Maximum numbers of hemispherical shaped inserts are used in all rows to provide cutter durability and long life. 
Tricone bits Structure 
Guidance of Tricone Bit Choice 
Bits Size 
