This document discusses different types of drill bits used in oil and gas drilling operations, including roller cone bits, fixed cutter bits, drag bits, and other specialized bit designs. It covers the main components of a drilling system from drill collars and drill pipe to the drill bit itself. The document also lists various bit cutting structures like milled tooth, tungsten carbide inserts, and different kinds of diamond compact bits.

1. -
1
2
3
T u r b o d r i l l
4
1
Drill collars
2
Cutting
3
Rotary table
4
Drill pipe

2. 5
6
7
5
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6
Round trip
7
8
8
Bit design

3. offset
offset
offset
9
10
9
Jet bits
10
Tricones
11
12
Roller Cone Bits
--
13
Rock Bits
1415
–
16
Drag
Bits
11
Drill string
12
Roller cutter bits
13
Milled tooth
14
Button bits
15
Tungsten carbide insert
16
Fixed cutter bits

4. 17
18
19
20
21
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Bourgoyne, A. T., Chenevert, M. E., Millheim, K. K., Young, F.
S‘’Applied Drilling Engineering’’SPE Textbook Series1986.
17
Fixed cutter bits
18
Steel cutterorFish tail
19
Natural diamond bits
20
Polycrystalline Diamond Compact bits(PDC)
21
Thermally Stable Polycrystalline bits(TSP)