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Eccentric Overburden Drilling Equipment

Eccentric drillingis used for casing following drilling while drilling in soil layer.

Product DescriptionSpecification

Operating Steps of Eccentric Reamer

1

At the beginning of drilling, the eccentric reaming sleeve spins out along the eccentric guide bit and begins reaming to ensure that the casing and drilling system advance simultaneously.

2

When drilling into the right position, carefully reverse, eccentric reaming sleeve cycle, and eccentric drilling system from the casing pull out.

3

The casing is pulled upwards and the concrete slurry or other filler is sprinkled at the bottom of the hole.

4

Conventional drilling tools are used in the bedrock to reach the required depth.

Specification

Specification of Eccentric Overburden Drilling Equipment

Type

① Casing Tube

② Drill Pipe

③ Guide Sleeve

④ TH-hammer

Casing Shop

Guide Device

Reamer

Pilot bit

NOD90

Maximun: 115mm

Connection Thread:

Effective length:

ND35, Cop32, IR3.5, NQL30

L3=90mm L4=55mm D3=101.7mm D4=93mm

L1=35mm L2=138mm D1=92mm D2=100mm

D5=91mm L5=70mm

D6=90mm L6=59mm

Minmum: 102mm

API2 3/8”Reg

174mm

Reaming Diameter: 123mm

Gauge button

Reamer has 4XФ12 buttons

8 X Ф12

Wrench Flats: 65mm

Front button

6 X Ф10

NOD115

Maximun: 142mm

Connection Thread:

Effective length:

ND45, Cop44, NSD4, DHD340A, NQL40, NM4

L3=76mm L4=55mm D3=127.5mm D4=117mm

L1=48mm L2=136mm D1=115mm D2=126mm

D5=114mm L5=89mm

D6=114mm L6=67mm

Minmum: 128mm

API2 3/8”Reg

174mm

Reaming Diameter: 152mm

Gauge button

Reamer has 5XФ14 buttons

8 X Ф14

Wrench Flats:

Front button

65mm

6 X Ф12

NOD140

Maximun: 168mm

Connection Thread:

Effective length:

ND55, Cop54, NSD5, DHD350R, NQL50

L3=90mm L4=63mm D3=155.3mm D4=143mm

L1=55mm L2=160mm D1=141mm D2=154mm

D5=138mm L5=69.5mm

D6=138mm L6=66mm

Minmum: 155.40mm

API2 3/8”Reg

205mm

Reaming Diameter: 185mm

Gauge button

8 X Ф16

Wrench Flats:

Reamer has 7XФ14 buttons

Front button

65mm

8 X Ф14

NOD165

Maximun: 193.70mm

Connection Thread:

Effective length:

ND65, Cop64, NSD6, DHD360, NQL60

L3=95mm L4=55mm D3=181.5mm D4=166mm

L1=61.5mm L2=181.5mm D1=165mm D2=178mm

D5=164mm L5=79.5mm

D6=165.80mm L6=82.50mm

Minmum: 181mm

API2 1/2”Reg

225mm

Reaming Diameter: 211mm

Gauge button

Reamer has 7XФ14 buttons

8 X Ф16

Wrench Flats:

Front button

65mm

8 X Ф16

NOD190

Maximun: 219mm

Connection Thread:

Effective length:

ND65, Cop64, NSD6, DHD360, NQL60

L3=110mm L4=70mm D3=204.7mm D4=193mm

L1=62.8mm L2=185mm D1=191mm D2=203mm

D5=164mm L5=79.5mm

D6=165.80mm L6=82.50mm

Minmum: 205mm

API2 1/2”Reg

225mm

211mm

Gauge button

Reamer has 7XФ14 buttons

8 X Ф16

Wrench Flats:

Front button

95mm

8 X Ф16

NOD240

Maximun: 273mm

Connection Thread:

Effective length:

ND85, Cop84, NSD8, DHD380, NQL80

L3=110mm L4=65mm D3=259mm D4=241mm

L1=70mm L2=190mm D1=240mm D2=257mm

D5=238mm L5=100mm

D6=240mm L6=89.50mm

Minmum: 260.4mm

API2 1/2”Reg

343mm

Reaming Diameter: 308mm

Gauge button

Reamer has 16XФ16 buttons

12 X Ф18

Wrench Flats:

Front button

95mm

32 X Ф16

NOD280

Maximun: 324mm

Connection Thread:

Effective length:

NSD10, NUMA100

L3=125mm L4=75mm D3=304mm D4=281mm

L1=97mm L2=254mm D1=280mm D2=303mm

D5=266mm L5=120mm

D6=280mm L6=135mm

Minmum: 305mm

API2 1/2”Reg

305mm

Reaming Diameter: 378mm

Gauge button

Reamer has 22XФ18 buttons

12 X Ф18

Wrench Flats:

Front button

95mm

27 X Ф16

Anbit Drilling Equipment Co., Ltd. is a professional water drilling rig manufacturers, mainly provides, drill bit, drilling tools, hammer machine, cheap air compressors, ABT Drilling Equipment, and etc, want to know more? Please contact us.



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