this presentation is about drill bit and the types of drill bit

1. Drill Bit
By: Mazn,
Darawan and
Bawan

2. History
• Older method included percussion
drilling, often took many years to
make a single well this way.
• Revolutionary idea as Howard Hughes’
rotary two cone bit changed the
industry

3. Bits
• Responsible of crushing and breaking the rock
formations as it penetrates the different
layers of earth’s crust.
• Either fixed cutters or roller cone

4. Bit design
Inserts and cutters

6. PDC (polycrystalline diamond compact) bit
• This type of drill bits includes
using diamonds with the bit
• Today nearly two-thirds of the
oil we use comes from wells
drilled using the (PDC) bits.
• Many drill bits include a
combination of steel,
tungsten-carbide, PDC
and diamond cutting and
grinding edges.

7. IADC classification
Developed by International
Association of Drilling Contractors
it has been representative of
drillers since 1940.

8. PDC drill bit
nomenclature

9. Matrix body
• Matrix is very
hard composition
contain tungsten
carbide grains
bonded with a
softer and
tougher metallic
binder.
Steel body
• it is capable of
withstanding high
impact loads, but is
relatively soft and,
without protective
features, would
quickly fail by
abrasion and erosion.

10. Roller Bits
Monocone roller bit Two cone roller bit

11. Tricone roller bits
This particular bit was developed by
engineers from the Sharp-Hughes Tool
Company in 1933 using the company's two
cone bits as a base design.
• Tricone roller bits are generally classified
as either tungsten carbide insert (TCI)
bits or milled-tooth bits.

14. Hybrid drill bits
• Hybrid drilling technology is a
paradigm shift in innovation, a
coalescence of roller cone and PDC
bits into a single, patented design. The
result is a technology designed to
exploit the best attributes of each bit
type, bridging the gap between them.
• Has features and advantages over both
PDC fixed cutters and roller cones

15. Bit evaluation
• It is important to maintain careful written
records of the performance of each bit for
future references. Bits are worn by abrasion
and shocks while drilling.
• The amount of wear on teeth, bearings and
gauge is recorded according to a special coding
system. Teeth wear is graded in eighths of the
original tooth height.

17. Bit gauge
Gauge wear, This can be determined by using a ring
gauge and ruler, the gauge ring is placed around
the bit and fitted to one side and the space
between the ring and third cone is measured.
Usually, this measurement is used for the amount
of wear.

18. Thank you for listening
Questions?