JUCON - Casing Advancement System

'with wings retracted'

'with wings extended'

Concentric Drilling
d
d

Since the wings extend and retract concentrically, they will drill and maintain a round hole.
The JUCON system has no tendency to wander, or to produce an offset.
This feature assures such a straight round hole as one drilled with a conventional bit.

High Drilling Efficiency
d
d

The design of the JUCON system enables the guide to perform most of drilling directly
while the extended wings perform reaming.
This minimizes loss of hammer energy and maintains high drilling efficiency.

Easily Retractable
d

After drilling to the required depth, the wings get retracted by rotating in the reverse
direction as the guide gets lifted.

for 190.7mm to 1,066.8mm Casings


Model

No. of Wings
Wing Gauge
Applicable Casing
Guide
Shank Type
Extended
D1 (mm).
Retracted (mm).
Max. O.D.
D2 (mm).
Min. I.D. D3(mm).
Nominal Size (in.)
O.D. 
D4(mm)
#160
2
214
155
190.7
174.7
7"
157
SD5, DHD350R
#190
3
230
181
216.3
200.3
8"
183
SD6, DHD360
#240
3
286
232
267.4
249.4
10"
234
SD8, DHD380
#280
4
336
277
318.5
297.3
12"
279
SD10,N100
#315
4
373
318
355.6
336.6
14"
320
SD12, DHD112, N120
#365
4
425
363
406.4
387.4
16"
365
SD12, DHD112, N120
#410
4
478
412
457.2
435.0
18"
414
SD15
#460
4
530
461
508.0
482.6
20"
463
SD15, SD18, N180
#510
4
580
509
558.8
533.4
22"
511
SD18,N180,JT380,JT415
#560
4
630
559
609.6
584.2
24"
561
SD18,N180,JT415,JT490
#600
4
685
600
660.4
631.8
26"
603
N240, JT490, JT520
#660
4
737
654
711.2
683.2
28"
656
N240, JT490, JT520
#710
4
784
699
758.0
730.0
30"
701
N240, JT520, JT610
#750
4
838
750
812.8
787.4
32"
752
N240, JT520, JT610
#810
4
886
797
858.0
826.0
34"
799
N240, JT610, JT700
#860
4
945
856
914.4
886.4
36"
858
N240, JT610, JT700
#900
4
995
906
965.2
937.2
38"
908
JT610, JT700
#960
4
1050
954
1016.0
984.0
40"
956
JT610, JT700
#1010
4
1100
1002
1066.8
1034.0
42"
1004
JT700, JT800
#1160
4
1275
1155
1246.0
1214.0
49"
1157
JT700, JT800, JT900
In accordance with our policy of constant improvement of the products, we reserve the right to amend design, materials and specifications at any time without notice.

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