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Help CenterConcentric Casing System With Wings
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Specifications
1.drill in overburden unstable rock.2.one step to drill and follow casing
3.flexible to open or close.
DTH drill bit down to the hole for water well drlling
Application Range:
It is recommended to drill in rock formation where contains some ovals and fracture.
Design Principles:
The stabel and reliable working performance and the less vibration of drill rig.
Different Structures:
Concentric system with ring bits,with wings and with blocks.
Operation Procedure
1.when the drilling starts, the wings swing out, and reams to drive the casing shoes and tubes into the hole.
2.When finished the drilling in overburden rock formations, reverse the drilling tools and the wings will get closed, and the drilling tools can be raised from the hole.
3.Next construction can be followed.
A |
B |
C |
D |
E |
F |
Outer Dia. of Casing Tube |
Inner Dia. of Casing Tube |
Reamed Dia. |
Min. Inner Dia. of Casing Shoe |
Hammer Type
|
Drill Pipes
|
mm |
mm |
mm |
mm |
|
mm |
114 |
101-103 |
125 |
93 |
TH79 |
60 |
140 |
124-127 |
152 |
113 |
TH98 |
76 |
146 |
127-132 |
154 |
115 |
TH98 |
76 |
168 |
149-155 |
184 |
138 |
TH122 |
76,89 |
178 |
159-165 |
194 |
148 |
TH122 |
76,89 |
193 |
173-180 |
206 |
164 |
TH139 |
114 |
219 |
199-206 |
234 |
185 |
TH139,TH180 |
114 |
244 |
224-231 |
273 |
219 |
TH180 |
114 |
Photos:
Guide Device
Wings
How to complete the whole deal
Step:
1. Firstly decide the design, material and color
2. Decide the size in accordance with client's requirement and our
recommendation
3. We will give the best offer.
4. Client's accept the offer and we send proforma invoice.
5. Client transfers 30%-50% deposit and production begins
6. After production, we will send ready products photo
7. After client's confirmation, we will arrange shipment, and send
copy shipping documents like B/L, commercial invoice and
packing list
8. Client transfer balance payment and we will send original
documents by DHL or EMS
Send Inquiry to This Supplier
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