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Eccentric Overburden Casing Drilling System Superior Performance Long Service Life

Changsha Chaojingang machinery manufacturing CO., Ltd

Eccentric Overburden Casing Drilling System Superior Performance Long Service Life

Model Number : HD35

Place of Origin : China

Brand Name : Super Diamond

Certification : ISO

MOQ : 1

Price : Negotiable

Packaging Details : Fixed plastic mold + carton + wooden box

Delivery Time : 5-8 work days

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : According to order quantity

Applications : Mining, Rock Drilling, Blasting Hole Drilling

Material : Alloy Steel

Processing Type : Carburizing Treatment, Fully Carburization

Advantage : High-efficiency

Service : Customized Products Upon Abandoned Bit Condition

Use : Well Drilling

Type : dth odex bit

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Odex Drilling / Simultaneous Casing Drilling

Outer Dia.(A)
mm
Outer Dia.(A)
mm
Inner Dia.(B)
mm
The Max Wall ThicknessReamed Dia.(C)
mm
Inner Dia. of Casing Shoe(D)
mm
Inner Dia. Of casing shoe that pilot bit can pass throughType of Hammer RecommendedHammer Type(E)Drill Pipe
mm
CEC108-CD35-841089661188684CD35DHD3.5 QL3076
CEC114-CD35-9011410261239290CD35DHD3.5 QL3076
CEC127-CD45-9712710991389997CD45DHD340A QL4076
CEC140-CD45-1151401286152117115CD45DHD340A QL4076
CEC168-CD55-1401681566185142140CD55DHD350R QL5076/89
CEC178-CD55-14617815810195148146CD55DHD350R QL5076/89
CEC183-CD55-15018316310200152150CD55DHD350R QL5076/89
CEC194-CD65-1651941807209167165CD65DHD360 QL6089/114
CEC219-CD65-1902192057237192190CD65DHD360 QL6089/114
CEC245-CD85-20824522510264210208CD85DHD380 QL80114
CEC273-CD85-2402732597308242240CD85DHD380 QL80114
CEC325-CN100-28032530510358282280CN100NUMA100 SD10

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Overburden Casing Drilling System DTH Bit is very popular in international water well and ore drilling field.
Features
Hardening treatment of the part's surface
with longer operating life and excellent anti - wear properties.

Structural optimization
Strengthen the structural strength, easy to operate

Superior performance
Stable and reliable performance, high drilling speed

When the bore-hole is complete, the casing is retrieved to be used again.
Pros
Rapid removal of cuttings;
No use of drilling mud;
High penetration rate, especially in resistant rock formation (e.g. basalt);
Easy soil and groundwater sampling during drilling;
Possible to measure yield estimate at selected depth in the formation;

Eccentric Overburden Casing Drilling System Superior Performance Long Service Life
Eccentric Overburden Casing Drilling System Superior Performance Long Service Life
Eccentric Overburden Casing Drilling System Superior Performance Long Service Life
Application Range:
It is suitable for drilling water wells, geothermal wells, short mircopiles, medium mini-type grouting hole of building, dam and harbour project.
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 drilling.








































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overburden drilling systems

      

odex casing system

      
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