Professional DTH Drilling Tools Eccentric Casing Overburden Drilling System
Brand Name:KSQ
Minimum Order Quantity:negociated one
Delivery Time:10-15 days
Payment Terms:T/T, L/C, Western Union
Place of Origin:China
Price:negociated one
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Location:
Beijing Beijing China
Address:
Room9-616, No. 10 Zhenxing Road (MDW Plaza), Changping District, 102200 Beijing, China
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Product Details
Professional DTH Drilling Tools Eccentric Casing Overburden Drilling System
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.
Application Range
This product is made of alloy of high quality and apply for advanced high-frequency welding technology and maturity of heat treatment process, greatly improving the intensity, wear resistance and impact toughness of cutter head, increasingly prolonging the working life, enhancing the drilling efficiency.
It is recommended to drill in rock formation where contains some ovals and fractures.
| Casing tube | Drill pipe | Guide sleeve | DTH hammer | Casing shoe | Guide device | 7.Reamer | 8.Pilot bit |
| Maximum OD:115mm Minimum ID:102mm | connection thread:API 2 3/8"REG OD:76mm wrech flats:65mm | Effective length: 174mm | HD35,COP32, IR3.5,QL30 | L3=90mm,L4=55mm, D3=101mm,D4=93mm | L1=35mm,L2=138mm, D1=92mm,D4=100mm | D5=91mm,L5=70mm, reaming diameter=123mm, reamer has4*Φ12buttons | D6=90mm,L6=59mm, gauge button=8*Φ12mm, face button:6*Φ10mm |
| Maximum OD:142mm Minimum ID:128mm | connection thread:API 2 3/8"REG OD:76mm wrech flats:65mm | Effective length: 174mm | HD45,COP44, SD4,DHD340A,QL40,HM4 | L3=76mm,L4=55mm, D3=127.5mm,D4=117mm | L1=48mm,L2=136mm , D1=115mm,D4=126mm | D5=114mm,L5=89mm, reaming diameter=152mm, reamer has5*Φ14buttons | D6=114mm,L6=67mm, gauge button=8*Φ14mm, face button:6*Φ13mm |
| Maximum OD:171mm Minimum ID:155.6mm | connection thread:API 2 3/8"REG OD:89mm wrech flats:65mm | Effective length: 205mm | HD55,COP54, SD5,DHD350R,QL50 | L3=90mm,L4=63mm, D3=155.3mm,D4=143mm | L1=55mm,L2=160mm, D1=141mm,D4=154mm | D5=138mm,L5=69.5mm, reaming diameter=185mm, reamer has7*Φ14buttons | D6=138mm,L6=66.5mm, gauge button=8*Φ16mm, face button:8*Φ14mm |
| Maximum OD:195mm Minimum ID:182.6mm | connection thread:API 3 1/2"REG OD:114mm wrech flats:95mm | Effective length: 225mm | HD65,COP64, SD6,DHD360, QL60 | L3=95mm,L4=55mm, D3=181.5mm,D4=166mm | L1=61.5mm,L2=181.5mm, D1=165mm,D4=178mm | D5=164mm,L5=79.5mm, reaming diameter=211mm, reamer has7*Φ14buttons | D6=165mm,L6=82.5mm, gauge button=8*Φ16mm, face button:8*Φ16mm |
| Maximum OD:222mm Minimum ID:205mm | connection thread:API 3 1/2"REG OD:114mm wrech flats:95mm | Effective length: 285mm | HD65,COP64, SD6,DHD360, QL60 | L3=110mm,L4=70mm, D3=204.5mm,D4=193mm | L1=62.5mm,L2=184.5mm ,D1=191mm,D4=203mm | D5=185.5mm,L5=90.2mm, reaming diameter=237mm, reamer has7*Φ16buttons | D6=190mm,L6=82mm, gauge button=9*Φ18mm, face button:9*Φ16mm |
| Maximum OD:273mm Minimum ID:260.4mm | connection thread:API 3 1/2"REG OD:114mm wrech flats:95mm | Effective length: 343mm | HD85,COP84, SD8,DHD380, QL80 | L3=110mm,L4=65mm, D3=259mm,D4=241mm | L1=70mm,L2=190mm, D1=240mm,D4=256mm | D5=238mm,L5=100mm, reaming diameter=308mm, reamer has14*Φ16buttons | D6=240mm,L6=89.5mm, gauge button=12*Φ16mm, face button:18*Φ16mm |
| Maximum OD:324mm Minimum ID:305mm | connection thread:API 4 1/2"REG OD:114mm wrech flats:95mm | Effective length: 305mm | SD10,NUMA100 | L3=125mm,L4=75mm, D3=304mm,D4=281mm | L1=97mm,L2=254mm, D1 |
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
Professional DTH Drilling Tools Eccentric Casing Overburden Drilling System
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