IADC517/537 Tricone Pilot Reamer Diamond PDC bit Hole Opener For
Oil Rigs
Introduction
PDC or "PAX" core bits utilise large cylindrical shaped cutters
that consist of a layer of micron-sized synthetic diamond particles
mounted onto a tungsten-carbide backing substrate (PDC =
polycrystalline diamond compact).
The technology was originally developed for oil drilling bits. PDC
core bits have proved to be exceptionally cost effective for
geotechnical drilling.
PDC core bits have extremely fast penetration rates and a very long
working life. The cutters are extremely tough and can core
formations such as hard limestones with occasional bands of harder
rock such as ironstone.
The cutting action is extremely aggressive and a large volume of
cuttings are produced requiring good volumes of flush to clear the
hole and prevent blocking.
Recommended for coring soft to medium hard formations, with water,
air, mud or foam as the flushing medium. Ideal for air flush
applications where a high rate of production is required.
The size, number and layout of the cutters can be varied to suit
the rock hardness, abrasivity and other details of the application
PDC drill bit used to penetrate the degassing hole, drain hole, and
grouting hole of coal mine, water canservancy and hydropower, road
construction, bridge and building.
Description of PDC drill bit
- Suitable for soft, medium and hard formations.
- Super strong material promotes gauge wear resistance to provide
long bit life.
- The cutter’s back rake has been unique design, reducing the bit torque and
increasing aggressiveness.
- Cuttings removal and bit cooling for bits are optimized by matching
the volume of rock removed by the cutter on each blade with the
proportional fluid flow.
Different types of PDC drill bit
- for Oil well drilling:PDC Coring Bits, PDC Drill Bits.
- for Mining:PDC Coring Bits, PDC Drill Bits.
- steel body PDC bit.
- matrix body PDC bit.
Specifications of PDC reaming bits
Roller cone
bit(IADC) | Roller cone(m/h) | Formation
hardness | Formation | Rock type | Compress
strength |
| WEM | OBM |
| 111/124 | 15-30 | 18-33 | very soft | soft formation with sticky
layer and low compressive
strength | Clay, slits, sands | <25MPa |
116/137
437 | 9-15 | 18-33 | soft | soft formation with low
compressive strength and
high drill ability | Clay stone, marl, lignite
sandstone, tuff | 25-50MPa |
126/139
517/527 | 4.5-9 | 6-12 | medium soft | soft to medium formation with
low compressive strength and
small abrasive layers | Clay stone, marl, lignite, tuff
sandstone, silts, anhydrites
| 50-75MPa |
211/217
517/537 | 2.5-6 | 3-6 | medium | medium to hard formation with
high compressive strength
and small abrasive layers | Mudstone, limestone
anhydrites
sandstone(calcareous) | 75-100MPa |
211/236
537/617 | 1.5-2.5 | 1.5-3 | medium hard | hard and dence formation with
very high compressive strength
but non abrasive | Limestone, anhydrites
dolomite | 100-120MPa |
311/347
627/637 | 1-1.5 | 1-1.5 | hard | hard and dence formation with
very high compressive strength
and some abrasive layers | shale(calcareous), sandstone
(siliceous), siltstone | 100-200MPa |
| 637/737/837 | 1 | 1 | very hard | extremely hard and
abrasive formation | Quartzite, rock | >200MPa |
About us
MIROC® Rock Drilling Tools are Rock Drilling Tools Brand by KSQ
Tecnologies (Beijing) Co. Ltd.
KSQ Technologies (Beijing) Co. Ltd. provides exceptional technical
know-how in development, production, and application. The company
has adopted advanced manufacturing processes to ensure high quality
steels and tungsten carbide inserts for its rock drilling
accessories. Its personnel understand clients’ drilling needs, and
have the service skills to recommend the right drilling tools for
the job. Its experienced product developers can also create custom
tools. Furthermore, the company’s development team introduces
innovative products each year – tools that are rigorously tested in
the field and proven
to perform beyond industry expectations.
MIROC® Rock Drilling and Ground Support Tools include:
Integral Rods
Plug Hole Rods
Tapered Drilling Tools
Extension Drilling Tools
Drifting and Tunneling Tools
Reaming Tools
Shank Rods
Shank Adapters (Striking Bars)
Down-the-hole (DTH) Bits
Down-the-hole (DTH) Hammers
