PDC bits

PDC is a driling head made with specific cutters for rock drilling and hard ground conditions taken from the crude oil and gas research and exploration industry.

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Drill bits that matter for you

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perfectly adapted to your activity.
Looking for a particular Diameter? IADC code? Or type of bearings? Our new website offers tools that ease your research.

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Rotary drilling a concrete block with a 6″ pdc bit

Polycrystalline diamond compact (PDC) drill bits have proven to be economical.
Many contractors have expressed concerns over reduced drill pipe life when using the PDC bits on rotary because of the higher rotating speeds and higher bit torque.

The solidity and strength of PDC bits lends them many advantages that a tricone bit can’t match.
On PDC bits, unlike the tricone bit, there is no movement relative to the bit head. PDC bits shear rock with diamond faced pdc cutters affixed to tungsten carbide.

Most significantly, PDC bits have a longer lifespan which means they don’t need to be replaced as often as tricone bits.

6″1/2 New PDC drill bit
6″1/2 New PDC drill bit

Want this ? Click Here !

DRILL ROD THREAD TABLE

Drill rods usually comes with a variety of threads.
Here is a drill Rod Thread Information Table that can help you for the choice of your drill bit

Line Pipe Rod
Line Pipe Rod
FLUSH JOINT STRAIGHT THREAD
FLUSH JOINT STRAIGHT THREAD

Conventional drill rods are available in mid-weight steel and or aluminum providing you with ergonomic flexibility which will improve your handling capabilities under the most strenuous of conditions. Rod threads for mineral exploration applications are typically WJ type threads, and are used with conventional style core barrels.

DRILL ROD THREAD TABLE
DRILL ROD THREAD TABLE

PDC or PCD drill bit ? what’s the difference ?

PDC means Polycrystalline Diamond Composite or Compact.
PDC are made by combining some layers of polycrystalline diamonds (PCD) with a layer of cemented carbide liner at high temperature and high pressure.
PDCs are among the most rigid of all diamond tool materials.

pdc_cutters on bestdrillingbits.com
pdc_cutters on bestdrillingbits.com

PCD simply means Polycrystalline Diamond : PCD are normally made by sintering many micro-size single diamond crystals at high temperature and high pressure. PCD has good fracture toughness and good thermal stability, and is used in making geological drill bits.
PDC has the advantages of diamond’s high wear resistance with carbide’s good toughness.

pdc cutters on a body in detail
pdc cutters on a body in detail

Here at bestdrillingbits.com , We supply PDC drill bits made with a range of shaped cutters or polycrystalline diamond compacts (PDC) brazed on a body.

PDC Cutters are made from carbide substrate and diamond grit. High heat of around 2800 degrees and high pressure of approximately 1,000,000 psi forms the compact. A cobalt alloy is also present and acts as a catalyst to the sintering process. The cobalt helps bond the carbide and diamond.

As a general rule, large cutters (19mm to 25mm) are more aggressive than small cutters. However, they may increase torque fluctuations.

Smaller cutters (8mm, 10mm, 13mm and 16mm) have been shown to drill at higher ROP than large cutters in certain applications. One such application is limestone for example.

Additionally, small cutters produce smaller cuttings while large cutters produce larger cuttings. Large cuttings may cause problems with hole cleaning if the drilling fluid cannot carry the cuttings up.

(1) or (2) Soft and soft sticky-Highly drillable formations such as clay, marl, gumbo and unconsolidated sands.
(3) Soft-medium-Low compressive strength sands, shale and anhydrites with hard layers intermixed.
(4) Medium-Moderate compressive strength sand, chalk, anhydrite and shale.
(6) Medium hard-Higher compressive strength with non-or semi-sharp sand, shale, lime and anhydrite.
(7) Hard-High compressive strength with sharp layers of sand or siltstone.
(8) Extremely hard-Dense and sharp formations such as quartzite and volcanic rock.

PDC CUTTING STRUCTURE
Very soft (1) to medium (4) formation type pdc bits have one dominant size of PDC cutter. PDC cutting structure is denoted in the following way:
2 – this bit has mostly 19mm cutters
3 – this bit has mostly 13 mm cutters
4 – this bit has mostly 8 mm cutters

The Benefits of PDC Bits : Rotary Drilling Demo with a 17″ 1/2 PDC

Rotary Drilling Demonstration with a 17″ 1/2 PDC Drill Bit we recently provide to one of our custommers in Europe.

The video shows the higher speed penetration, good quality and clear sharpness of drilling of PDC Bit compared to Tricone or Blade Bit.

At Besdrillingbits.com (a Technidrill division) we optimize the designs and perfect the performance of each drill bit, helping operators avoid the delay and expense of a more traditional trial-and-error approach.

Technidrill is a Manufacturer of drill machine components and drill bits from France and Canada. We also supply drill bits like PDC, TRICONE, Blades Bits (Three-wings) with better price, and more than 30000 pcs in stock. – See more at: http://bestdrillingbits.com

What are the benefits of PDC bits ?

What makes a PDC bit, its features and benefits, and what applications these bits work well in.

 

pdc cutters on a body in detail
pdc cutters on a body in detail

First of all, it’s important to notice the important role of Polycrystalline diamond compact (PDC) CUTTERS.
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.
This makes it ideal for numerous material removal (cutting) processes.

PDCs are manufactured using diamond, tungsten carbide, high pressure and heat.
The diagram below shows the process.

detailed diagram of a PDC cutter

 

Contact us for more details.

ABOUT PDC CUTTERS

PDCPolycrystalline Diamond Compact ) cutter bit inserts are sintered with selected diamond powder and tungsten carbide under high temperature and ultra-high pressure.

PDC’s have high hardness, wear resistance and impact resistance, are widely used for oil/gas well drill bit, rock drill and coal mining bitalso could be used for diamond tools for cutting, grinding, polishing.

pdc_cutters on bestdrillingbits.com
pdc_cutters on bestdrillingbits.com

As a general rule, large cutters (19mm to 25mm) are more aggressive than small cutters. However, they may increase torque fluctuations.

Smaller cutters (8mm, 10mm, 13mm and 16mm) have been shown to drill at higher ROP than large cutters in certain applications. One such application is limestone for example.

Additionally, small cutters produce smaller cuttings while large cutters produce larger cuttings. Large cuttings may cause problems with hole cleaning if the drilling fluid cannot carry the cuttings up.

(1) or (2) Soft and soft sticky-Highly drillable formations such as clay, marl, gumbo and unconsolidated sands.
(3) Soft-medium-Low compressive strength sands, shale and anhydrites with hard layers intermixed.
(4) Medium-Moderate compressive strength sand, chalk, anhydrite and shale.
(6) Medium hard-Higher compressive strength with non-or semi-sharp sand, shale, lime and anhydrite.
(7) Hard-High compressive strength with sharp layers of sand or siltstone.
(8) Extremely hard-Dense and sharp formations such as quartzite and volcanic rock.

PDC CUTTING STRUCTURE

Very soft (1) to medium (4) formation type pdc bits have one dominant size of PDC cutter. PDC cutting structure is denoted in the following way:
2 – this bit has mostly 19mm cutters
3 – this bit has mostly 13 mm cutters
4 – this bit has mostly 8 mm cutters