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Xiamen Bestlink Factory Co., Ltd.

Drilling Bit, Odex Drilling System, Eccentric Casing System manufacturer / supplier in China, offering Eccentric Overburden Drilling Bit, Odex Eccentric Overburden Casing Drilling Systems Drilling Bits, Bestlink Manufacturer Down The Hole Button Bits for Quarrying and so on.

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Eccentric Overburden Drilling Bit

FOB Price: US $1,000-6,000 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $1,000-6,000/ Piece
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Port: Xiamen, China
Production Capacity: 1000 Set /Month
Payment Terms: L/C, T/T, Western Union, Money Gram

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Basic Info
  • Model NO.: HOD140 Eccentric Overburden Drilling Bit
  • Type: Center Drill Bit
  • Usage: Well Drilling
  • Transport Package: Carton
  • HS Code: 84305039
  • Length: Jobber-length
  • Material: Tungsten Carbide
  • Trademark: BESLINK
  • Origin: Xiamen, Fujian
Product Description
Eccentric Overburden Drilling Bit

In the projects of drilling,drillers often meet with problems due to the loose land formation.These may cause troubles such as difficulty in drilling down,collapse of holes,damage of drilling tools,etc.To solve the problems,the best way is to use (ODEX)Overburden Drilling System which can prevent holes and drilling tools from damage,and support the holes by casing tubes.

General Introduction 
HOD90 HOD115 HOD140 Overburden casing system,ODEX system, Casing drilling system,eccentric casing system
1.drill in overburden unstable rock step to drill and follow casing 
3.flexible to open or close 
4.effecient below 300mm 
Eccentric Overburden Drilling Bit

Design Principles:
Make the casing follow easy and the equipment and operation simple 
Outstanding Advantages 
Simple structure,simple operation,reliable quality,retrievable drilling tools,long service life.
Raw Material Steel:
first class special alloy steel with high strength, heat resistance and wearable
The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.

Eccentric Reamer System Step-by-step 
1. When drilling starts, the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly. 
2. When the required depth is reached, rotation is reversed carefully, whereupon the reamer swings in , allowing the drill bit assembly to be pulled up through the casing. 
3. Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent. 
4. Drilling continues to the desired depth in the bedrock using a conventional drill string.
Type1.Casing tube2.Drill pipe3.Guide sleeve4.DTH hammer5.Casing shoe6.Guide device7.Reamer 8.Pilot bit
HOD90Maximum OD:115mm Minimum ID:102mmconnection thread:API 2 3/8"REG OD:76mm wrech flats:65mmEffective length: 174mmHD35,COP32, IR3.5,QL30L3=90mm,L4=55mm, D3=101mm,D4=93mmL1=35mm,L2=138mm, D1=92mm,D4=100mmD5=91mm,L5=70mm, reaming diameter=123mm, reamer has4*Φ12buttonsD6=90mm,L6=59mm, gauge button=8*Φ12mm, face button:6*Φ10mm
HOD115Maximum OD:142mm Minimum ID:128mmconnection thread:API 2 3/8"REG OD:76mm wrech flats:65mmEffective length: 174mmHD45,COP44, SD4,DHD340A,QL40,HM4L3=76mm,L4=55mm, D3=127.5mm,D4=117mmL1=48mm,L2=136mm, D1=115mm,D4=126mmD5=114mm,L5=89mm, reaming diameter=152mm, reamer has5*Φ14buttonsD6=114mm,L6=67mm, gauge button=8*Φ14mm, face button:6*Φ13mm
HOD140Maximum OD:171mm Minimum ID:155.6mmconnection thread:API 2 3/8"REG OD:89mm wrech flats:65mmEffective length: 205mmHD55,COP54, SD5,DHD350R,QL50L3=90mm,L4=63mm, D3=155.3mm,D4=143mmL1=55mm,L2=160mm, D1=141mm,D4=154mmD5=138mm,L5=69.5mm, reaming diameter=185mm, reamer has7*Φ14buttonsD6=138mm,L6=66.5mm, gauge button=8*Φ16mm, face button:8*Φ14mm
HOD165Maximum OD:195mm Minimum ID:182.6mmconnection thread:API 3 1/2"REG OD:114mm wrech flats:95mmEffective length: 225mmHD65,COP64, SD6,DHD360, QL60L3=95mm,L4=55mm, D3=181.5mm,D4=166mmL1=61.5mm,L2=181.5mm, D1=165mm,D4=178mmD5=164mm,L5=79.5mm, reaming diameter=211mm, reamer has7*Φ14buttonsD6=165mm,L6=82.5mm, gauge button=8*Φ16mm, face button:8*Φ16mm
HOD190Maximum OD:222mm Minimum ID:205mmconnection thread:API 3 1/2"REG OD:114mm wrech flats:95mmEffective length: 285mmHD65,COP64, SD6,DHD360, QL60L3=110mm,L4=70mm, D3=204.5mm,D4=193mmL1=62.5mm,L2=184.5mm,D1=191mm,D4=203mmD5=185.5mm,L5=90.2mm, reaming diameter=237mm, reamer has7*Φ16buttonsD6=190mm,L6=82mm, gauge button=9*Φ18mm, face button:9*Φ16mm
HOD240Maximum OD:273mm Minimum ID:260.4mmconnection thread:API 3 1/2"REG OD:114mm wrech flats:95mmEffective length: 343mmHD85,COP84, SD8,DHD380, QL80L3=110mm,L4=65mm, D3=259mm,D4=241mmL1=70mm,L2=190mm, D1=240mm,D4=256mmD5=238mm,L5=100mm, reaming diameter=308mm, reamer has14*Φ16buttonsD6=240mm,L6=89.5mm, gauge button=12*Φ16mm, face button:18*Φ16mm
HOD280Maximum OD:324mm Minimum ID:305mmconnection thread:API 4 1/2"REG OD:114mm wrech flats:95mmEffective length: 305mmSD10,NUMA100L3=125mm,L4=75mm, D3=304mm,D4=281mmL1=97mm,L2=254mm, D1=280mm,D4=203mmD5=266mm,L5=120mm, reaming diameter=378mm, reamer has22*Φ18buttonsD6=280mm,L6=135mm, gauge button=12*Φ18mm, face button:27*Φ16mm
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