Fixed Cutter Bits

Which cutting action is the most prominent when PDC bits are used?

• Shearing

• Gouging

• Crushing

• Compressing

Which zone in a PDC bit profile represents the outermost part of the bit which controls the stability of the bit?

(a)  

Is it TRUE that the body of PDC bit is composed of polycrystalline diamond material?

• Yes

• No

Which TWO (2) of the following are correctly describing about matrix-bodied PDC bits?

• Not easily abraded

• Not weldable or repairable

• Easily abraded

• Easily weldable or repairable

Which bit profile is the best design for drilling soft formations?

• Flat profile

• Short parabolic

• Medium parabolic

• Long parabolic

What are the three main types of fixed cutter bits?

• Drag bit

• Diamond bit

• PDC bit

• Milled tooth bit

• Insert bit

PDC bits are commonly used to drill the shallowest section of a hole. True or False?

• True

• False

Does shallow cone design in PDC bits allow better steerability for directional drilling?

• Yes

• No

In terms of cutter density, the ____ cutters on the PDC bit, the ____ effective they are to drill hard formations.

• more ...... more

• less ...... less

• more ...... less

• less ...... more

Study the diagram. Which TWO (2) describes correctly about the the consequences of the design?

• The cutter attacks the formation less aggressively.

• The cutter attacks the formation more aggressively.

• Drill soft formations more effectively

• Drill hard formations more effectively