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Natural Diamond Bits
Natural Diamond Bits
F Natural diamond history
F Design technology
F Nomenclature
F Applications
F Special features
Natural Diamond Bits
F Natural diamond history
l hardest material known to man
l diamonds can be damaged by high temperature, which causes
them to split or crack
l South Africa produces the most natural diamonds
l the USA produces the most synthetic diamond
Natural Diamond Bits
F Design technology
l directly dependent on ROP and durability
l related to formation characteristics
Natural Diamond Bits
F Design technology
l computer aided engineering design
l depth of cut for each diamond
l resultant force for each diamond
l heat generated at the diamonds
l generally require a PDM or turbine to maximize natural
diamond bit performance
Natural Diamond Bits
F Diamond bit hydraulics
l successful diamond drilling requires optimum fluid flow through
the bit
l controlled flow and even distribution over the drilling surface of
the bit
l cooling and lubricating of the diamonds
l rapid removal of drilled cuttings
Natural Diamond Bits
Diamond Drill Bit Nomenclature
Nose Radius
Apex
Flank Angle
Crowfoot
Radius
Gage Point
Gage Lands
Weld
Alignment
Threads
Cone Angle
Cone Nose
Flank
Shoulder
Gage
Crown
Chamfer
Blank
Shank
Breaker Slot (2)
API Pin
Connection
Crown
Profile
Natural Diamond Bits
Diamond Drill Bit Nomenclature
Crowfoot
Opening
Diamond Set Pad
Collector
(Secondary)
Feeder
(Primary)
Junk Slot
Fluid
Courses
Control Diameters
(TFA & Collector
Natural Diamond Bits
Natural Diamond Bits
Diamond Side Track
Natural Diamond Bits
F Applications
l natural diamonds plow the rock to fail it
l proper selection of the bit for the formation
l direct understanding of the formation for bit style, diamond
size, and diamond quality
l the harder the formation the easier it is to clean a diamond bit
l expected performance is referenced to roller cone offset
Natural Diamond Bits
F Special features
l low pressure drop for PDM and Turbine applications
l shallow cone, short gauge used for sidetracking with PDMs
and Turbines
l deep cone enhances bit stability
l core ejector diamond bits
Natural Diamond Bits
F Diamond Drill Bit naming Convention
l is unique to each diamond bit manufacturer
Specialized Bits
F Design technology
F Applications
F Bi-Center drill bits
F Core ejector bits
F PDC / Diamond mix bits
l FMi, Fi
Specialized Bits
F Design technology
l incorporate standard design criteria to a special application
Specialized Bits
F Applications
l enlarging main hole below casing, Bi-Center bit
l interbedded formations, hard rock drilling FMi, Fi bits
l immediate formation analysis with core ejector diamond
bit
Specialized Bits
Bi-Center Bit
Mix bits PDC / Diamond Bits
FMi / Fi Mix Bit Cutting Structure
Concept of a
cutting structure
realized with
impregnated discs.
Mix bits PDC / Diamond Bits
Diamond Impregnated Discs Shapes
Thank youThank you

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3 diamond

  • 2. Natural Diamond Bits F Natural diamond history F Design technology F Nomenclature F Applications F Special features
  • 3. Natural Diamond Bits F Natural diamond history l hardest material known to man l diamonds can be damaged by high temperature, which causes them to split or crack l South Africa produces the most natural diamonds l the USA produces the most synthetic diamond
  • 4. Natural Diamond Bits F Design technology l directly dependent on ROP and durability l related to formation characteristics
  • 5. Natural Diamond Bits F Design technology l computer aided engineering design l depth of cut for each diamond l resultant force for each diamond l heat generated at the diamonds l generally require a PDM or turbine to maximize natural diamond bit performance
  • 6. Natural Diamond Bits F Diamond bit hydraulics l successful diamond drilling requires optimum fluid flow through the bit l controlled flow and even distribution over the drilling surface of the bit l cooling and lubricating of the diamonds l rapid removal of drilled cuttings
  • 7. Natural Diamond Bits Diamond Drill Bit Nomenclature Nose Radius Apex Flank Angle Crowfoot Radius Gage Point Gage Lands Weld Alignment Threads Cone Angle Cone Nose Flank Shoulder Gage Crown Chamfer Blank Shank Breaker Slot (2) API Pin Connection Crown Profile
  • 8. Natural Diamond Bits Diamond Drill Bit Nomenclature Crowfoot Opening Diamond Set Pad Collector (Secondary) Feeder (Primary) Junk Slot Fluid Courses Control Diameters (TFA & Collector
  • 11. Natural Diamond Bits F Applications l natural diamonds plow the rock to fail it l proper selection of the bit for the formation l direct understanding of the formation for bit style, diamond size, and diamond quality l the harder the formation the easier it is to clean a diamond bit l expected performance is referenced to roller cone offset
  • 12. Natural Diamond Bits F Special features l low pressure drop for PDM and Turbine applications l shallow cone, short gauge used for sidetracking with PDMs and Turbines l deep cone enhances bit stability l core ejector diamond bits
  • 13. Natural Diamond Bits F Diamond Drill Bit naming Convention l is unique to each diamond bit manufacturer
  • 14. Specialized Bits F Design technology F Applications F Bi-Center drill bits F Core ejector bits F PDC / Diamond mix bits l FMi, Fi
  • 15. Specialized Bits F Design technology l incorporate standard design criteria to a special application
  • 16. Specialized Bits F Applications l enlarging main hole below casing, Bi-Center bit l interbedded formations, hard rock drilling FMi, Fi bits l immediate formation analysis with core ejector diamond bit
  • 18. Mix bits PDC / Diamond Bits FMi / Fi Mix Bit Cutting Structure Concept of a cutting structure realized with impregnated discs.
  • 19. Mix bits PDC / Diamond Bits Diamond Impregnated Discs Shapes