Drilling System with Wings
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Operation Procedure
1. The wings swing out soon after the drilling starts. The ream drives the casing shoes and tubes in the drill hole.
2. After completing the drilling process in the overburden rock formation, the wings will close as soon as the reverse drilling process begins. This allows the drilling tool to be pulled back from the hole.
3. Follow the next drilling process.
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| A | E | C | D | E | |||
| System No. | Outer Dia. | Thickness Range | Wing Bit Outer Dia. | Guide device Dia. | Hammer Type | Drill Pipes | |
| KCC125 | 114 mm (4.5") | 11-13mm ( 0 .43") - ( 0 .51") | 125 mm (4.92") | 93 mm (3.66") | DHD 350 COP 32/34 | 60 mm (2.36") | |
| KCC152 | 140 mm (5.5") | 13-16mm ( 0 .51") - ( 0 .63") | 152 mm (6") | 113 mm (4.45") | DHD 340 QL 40, SD-4 | 76 mm (3") | |
| KCC150 | 146 mm (5.75") | 14-19 mm ( 0 .55") - ( 0 .75") | 154 mm (6.06") | 115 mm (4.52") | DHD 340 QL 40, SD-4 | 76 mm (3") | |
| KCC185 | 168 mm (6.6") | 13-19 mm (.51") - ( 0 .75") | 184 mm (7.25") | 138 mm (5.43") | DHD 350 QL 50, SD-5 | 76, 89 mm (3"), (3.5") | |
| KCC190 | 178 mm (7") | 13-19 mm ( 0 .51") - ( 0 .75") | 194 mm (7.6") | 148 mm (5.8") | DHD350/360 QL50/60, SD5/6 | 76, 89 mm (3"), (3.5") | |
| KCC205 | 193 mm (7.6") | 13-20 mm ( 0 .51") - ( 0 .78") | 206 mm (8.11") | 164 mm (6.45") | DHD360 QL 60 /SD-6 | 114 mm (4.5") | |
| KCC230 | 219 mm (8.62") | 13-20 mm ( 0 .51") - ( 0 .78") | 234 mm (9.2") | 185 mm (7.28") | DHD360 QL 60, SD-6 | 114 mm (4.5") | |
| KCC275 | 244 mm (9.6") | 13-20 mm ( 0 .51") - ( 0 .78") | 273 mm (10.75") | 219 mm (8.62") | DHD380 QL-80, SD-8 | 114 mm (4.5") | |
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