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Robit SOD 76mm Casing Drilling System Durable For Drilling Geothermal Wells Symmetric Overburden Casing System

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Good quality Button Drill Bits for sales
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Robit SOD 76mm Casing Drilling System Durable For Drilling Geothermal Wells Symmetric Overburden Casing System

China Robit SOD 76mm Casing Drilling System Durable For Drilling Geothermal Wells Symmetric Overburden Casing System supplier
Robit SOD 76mm Casing Drilling System Durable For Drilling Geothermal Wells Symmetric Overburden Casing System supplier Robit SOD 76mm Casing Drilling System Durable For Drilling Geothermal Wells Symmetric Overburden Casing System supplier Robit SOD 76mm Casing Drilling System Durable For Drilling Geothermal Wells Symmetric Overburden Casing System supplier

Large Image :  Robit SOD 76mm Casing Drilling System Durable For Drilling Geothermal Wells Symmetric Overburden Casing System

Product Details:

Place of Origin: China
Brand Name: ProDrill
Certification: ISO 9001
Model Number: 76mm

Payment & Shipping Terms:

Minimum Order Quantity: 1
Price: Negotiable
Packaging Details: wood box
Delivery Time: 10-15days
Payment Terms: T/T
Supply Ability: 1000/month
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Detailed Product Description
Casing O.D: 76mm Casing Wall Max: 8mm
Ring Bit I.D: 41mm Ring Bit O.D: 84mm
Pilot Bit O.D: 59mm Code No.: RoBit-SOD 76

Robit-SOD 76mm Symmetix Casing System by Top Hammer;Symmetric / Concentric Overburden Casing Drilling System

 

Rock drilling tools manufacturer ProDrill: Symmetric drilling system is designed to drill and case a hole simultaneously through unstable ground conditions. The driver bit incorporated with a satisficial ring or reusable ring makes a full face head design which significantly improves the penetration rate and hole straightness of drilling. The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, and thus minimizing the disruption of the surrounding of the drill hole.

 

 

RoBit SOD 76 Symmetix Casing System with rock drill bits: Ring bit and Pilot bit by Top Hammer
Application Range: Suitable for drilling water wells, geothermal wells, medium mini-type grouting hole of building, dam,tunnel umbrella and harbor project.
1. Ring bit and casing shoe assembly is welded to casing prior to drilling. Lock the assembly into pilot bit with hammer. The pilot bit’s upper shoulder engages the shoulder of the casing shoe.
2. Hammer’s percussive energy is transferred through the pilot and ring bits, crushing rock. Part of impact energy advances casing.
3. On completion of drilling and casing, the drill string with pilot bit is retrieved by a slight reverse rotation to unlock the bayonet coupling. The ring bit stays in the hole, and can be recovered only if the casing is retrieved.
4. Drilling continues to the desired depth in the bedrock using a conventional drilling.

 

Application:

FOREPOLING

Forepoling,also known as tube umbrella,tunnel umbrella, is an application used to strengthen tunnel roof in broken rock condition.Drilling system consists of casing tubes which are drilled through the overburden as an umbrella and filled with grouting.ProDrill symmetric casing system allows easy driving of the casing tubes into the ground with low torque demand.

ProDrill symmetric casing overburden drilling system mostly used in forepoling are ProDrill+88,9/8, ProDrill 114,3/10,and ProDrill 139,7/10.

 

Code No. Casing O.D.   Wall thickness Ring bit I.D. Ring bit O.D. Polit bit O.D.
mm inch mm inch mm inch mm inch mm inch
RoBit-SOD 89 89 3.5" 4 0.157 71 2.795 99 3.898 80 3.15
RoBit-SOD 76 76 3" 8 0.315 47 1.85 90 3.543 59 2.323
RoBit-SOD 89 89 3.5" 8 0.315 50.8 2 94.9 3.736 70 2.756
RoBit-SOD 101 101.6 4" 10 0.394 65 2.559 110 4.331 79 3.11
RoBit-SOD 225 114 4.5" 10 0.394 73.5 2.894 120.3 4.736 92.5 3.642
RoBit-SOD 140 140 5.5" 10 0.394 94 3.701 145.7 5.736 117.5 4.626
RoBit-SOD 168 168 6.625" 10 0.394 127 5 182.3 7.177 147 5.787

 

Code No. Casing wall max.thickness Ring bit Pilot bit Unit
Inner Outer Outer
ATLAS-SOD 76 8 41 88 58 mm
0.31 1.61 3.46 2.26 inch
ATLAS-SOD 89 8 54 100 70 mm
0.31 2.13 3.94 2.76 inch

 

Ring bits+casing shoe for 76mm symmetric casing system

Robit SOD 76mm Casing Drilling System Durable For Drilling Geothermal Wells Symmetric Overburden Casing System

Pilot bits for 76mm symmetric casing system

ROBIT-SOD and Atlas-SOD

 

 

Robit SOD 76mm Casing Drilling System Durable For Drilling Geothermal Wells Symmetric Overburden Casing System

 

Contact Details
Xiamen Prodrill Equipment Co., Ltd

Contact Person: Prodrill

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