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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 the drill bit assembly.
2. When the required depth is reached, rotation is reversed carefully, where upon 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 drilling 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.
drilling.Specifications:
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Model |
KEOD90 |
KEOD115 |
KEOD140 |
|
1 |
Casing Tube |
Maximum
O.D.: 115mm
Minimum I.D.: 102mm |
Maximum
O.D.: 142mm
Minimum I.D.: 128mm |
Maximum
O.D.: 171mm
Minimum I.D.: 155.6mm |
|
2 |
Drill Pipe |
ConnectionThread: API23/8Reg
O.D.: 76mm
Wrench Flats: 65mm |
ConnectionThread: API23/8Reg
O.D.: 76mm
Wrench Flats: 65mm |
ConnectionThread: API23/8Reg
O.D.: 89mm
Wrench Flats: 65mm |
|
3 |
Guide Sleeve |
Effective length: 174mm |
Effective length: 174mm |
Effective length: 205mm |
|
4 |
DTH-Hammer |
HD35, Cop32, IR3.5, QL30 |
HD45, Cop44, SD4, DHD340A, QL40,HM4 |
HD55, Cop54,SD5, DHD350R, QL50 |
|
5 |
Casing Shoe |
L3=90mm L4=55mm D3=101mmD4=93mm |
L3=76mm L4=55mm D3=127.5mm D4=117mm |
L3=90mm L4=63mm D3=155.3mm D4=143mm |
|
6 |
Guide Device |
L1=35mm L2=138mm D1=92mmD2=100mm |
L1=48mm L2=136mm D1=115mm D2=126mm |
L1=55mm L2=160mm D1=141mm D2=154mm |
|
7 |
Reamer |
D5=91mm L5=70mm
Reaming Diameter: 123mm
Reamer has 4*Ф12 buttons |
D5=114mm L5=89mm
Reaming Diameter: 152mm
Reamer has 5*Ф14 buttons |
D5=138mm L5=69.5mm
Reaming Diameter: 185mm
Reamer has 7*Ф14 buttons |
|
8 |
Pilot Bit |
D6=90mm L6=59mm
Gauge button: 8*Ф12
Face button:6*Ф10 |
D6=114mm L6=67mm
Gauge button: 8*Ф14
Face button:6*Ф13 |
D6=138mm L6=66.5mm
Gauge button: 8*Ф16
Face button:8*Ф14 |
|
|
Model |
KEOD165 |
KEOD190 |
KEOD240 |
KEOD280 |
|
1 |
Casing Tube |
Maximum
O.D.: 195mm
Minimum I.D.: 182.6mm |
Maximum
O.D.: 222mm
Minimum I.D.: 205mm |
Maximum
O.D.: 273mm
Minimum I.D.: 260.4mm |
Maximum
O.D.: 324mm
Minimum I.D.: 305mm |
|
2 |
Drill Pipe |
ConnectionThread: API31/2Reg
O.D.: 114mm
Wrench Flats: 95mm |
ConnectionThread: API31/2Reg
O.D.: 114mm
Wrench Flats: 95mm |
ConnectionThread: API31/2Reg
O.D.: 114mm
Wrench Flats: 95mm |
Connection Thread: API41/2Reg
O.D.: 114mm
Wrench Flats: 95mm |
|
3 |
Guide Sleeve |
Effective length: 225mm |
Effective length: 285mm |
Effective length: 343mm |
Effective length: 305mm |
|
4 |
DTH-Hammer |
HD65, Cop64, SD6, DHD360, QL60 |
HD65, Cop64, SD6, DHD360, QL60 |
HD85, Cop84, SD8, DHD380, QL80 |
SD10, NUMA100 |
|
5 |
Casing Shoe |
L3=95mm L4=55mm D3=181.5mm D4=166mm |
L3=110mm L4=70mm D3=204.5mm D4=193mm |
L3=110mm L4=65mm D3=259mmD4=241mm |
L3=125mm L4=75mm D3=304mmD4=281mm |
|
6 |
Guide Device |
L1=61.5mm L2=181.5mm D1=165mmD2=178mm |
L1=62.5mm L2=184.5mm D1=191mmD2=203mm |
L1=70mm L2=190mm D1=240mmD2=256mm |
L1=97mm L2=254mm D1=280mmD2=303mm |
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7 |
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