IADC is the abbreviation of the International Association of Drilling Contractors. The IADC code is the international standard code for drill bits, which is used to identify and classify different types of drill bits. The IADC code consists of four digits, of which the fourth digit is an additional code, which is usually not used. When drilling buyers need a rotary drill, using the IADC code to describe the rotary drill bit can be said to be very accurate.
The IADC code of roller drill bits is basically composed of three numbers, each of which represents a different meaning.
The first number in the IADC code:
1 2 3 represents steel tooth roller drill bits
1 represents soft formations
2 represents medium-hard formations
3 represents hard formations
4 5 6 7 8 represents insert tooth roller drill bits
4 represents the softest formations
8 represents the hardest formations
The second number in the IADC code:
“1 2 3 4” further indicates the classification of the formations entered
1 represents the softest formations
4 represents the hardest formations
The third number in the IADC code
The third number is classified according to the bearing type
1 represents non-sealed rolling bearing roller drill bits
2 represents non-sealed rolling bearing air drill bits
3 represents non-sealed rolling bearings with enhanced protection diameter drill bits
4 represents sealed rolling bearing roller drill bits
5 represents sealed rolling bearing roller drill bits with enhanced protection diameters
6 represents sealed sliding bearing roller drill bits
7 Represents sealed sliding bearing roller drill bit with enhanced protection diameter
Some roller drill bits have letters after the IADC code, and each letter represents a different meaning
A. Air roller drill bit
C: Center nozzle
X: Wedge-shaped teeth
Y: Conical teeth
Example
A complete IADC code example is as follows: 537.
5: Indicates that the drill bit is a tungsten alloy insert (TCI) drill bit.
3: Indicates that the drill bit adopts a sealed bearing design.
7: Indicates that the drill bit is suitable for very hard formations.
Another example is: 132.
1: Indicates that the drill bit is a steel tooth drill bit.
3: Indicates that the drill bit adopts a floating design.
2: Indicates that the drill bit is suitable for medium formations.
