What is IADC code?
IADC code is short for “International Association of Drilling Contractors”. The IADC Code for Tricone Bits defines its bearing design and other design features ( SHIRT TAIL, LEG, SECTION, CUTTER). IADC Codes make it easier for drillers to describe what kind of rock bit they are looking for to the supplier.
What is the classification of drill bit?
Drill bits are generally classified as Twist Drill, Counterbore, Countersink, Flat Bottom Boring, and Specialty. On our web site we have divided these into two categories: Drill Bits – Normally used with hand held drills or drill presses fitted with standard chucks.
What is PDC bit?
A PDC bit is a drill bit fitted with industrial diamond cutters instead of hardened metal teeth. A PDC bit is a special type of diamond drilling bit that does not use roller cones, but instead has polycrystalline diamond inserts.
What is drill bit offset?
The bit cone’s “offset” is defined as the horizontal distance between the axis of the bit and a vertical plane through the axis of the journal.
What is bit dull grading?
The IADC Dull Grading System allows for detailed recording bit performance of pulled bit condition. This system allows the user to note the physical condition of a bit for bit performance evaluation.
What is the main advantage of PDC bits?
PDC Cutters enhance the performance of PDC drill bits, making them dynamically stable across a wide range of demanding vertical and directional drilling applications. Polycrystalline diamond cutter is a unique material posessing high strength, hardness and toughness.
What is Journal angle?
The journal angle (Figure 3-1) is the angle at which the journal is mounted, relative to a horizontal plane. This mounting moves the cutting elements (cones) outside the support members.
What is the angle of a drill bit?
A drill bit has two cutting surfaces, one on each side of its center axis, that are cut at an angle of approximately 60 degrees. The parts of a drill bit.
What is IADC nomenclature for PDC drill bits?
The IADC system for tricones is used the world over. However, a knowledge of IADC classification for PDC drill bits is helpful. Nomenclature for PDC drill bits consists of one letter and three numbers. The letter indicates body type: M for matrix, S for steel, and D for diamond The next three numbers indicate the following: 1.
What do the numbers mean on a drill bit?
However, it’s helpful to have a knowledge of the IADC classification system for PDC drill bits. Nomenclature for PDC drill bits consists of one letter and three numbers. The letter indicates body type: M for matrix, S for steel, and D for diamond. The next three numbers indicate the following:
What is the IADC classification system for tricones?
The IADC system for tricones is used the world over. However, a knowledge of IADC classification for PDC drill bits is helpful. Nomenclature for PDC drill bits consists of one letter and three numbers. The letter indicates body type: M for matrix, S for steel, and D for diamond The next three numbers indicate the following:
What is the IADC definition of a drill string?
This chapter of the IADC Drilling Manual is concerned with the specifications, operating data, and the care and handling of drill string. It will also discuss troubleshooting of the prob- lems that may occur. The IADC definition of a drill string is drillpipe with tool joints attached.