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The 'WM' Design barrel is an effective tool for recovering cores from friable and caving strata. The construction of the barrel is similar to the swivel type - double tube core barrel, except the core lifter is contained in a lifter case attached to the inner barrel. This allows the skirt of the lifter case to extend to the bottom of the diamond bit and protects the core from water washing, except at the face of the bit. The "M" Barrel is very useful for extremely sensitive coring requirements and where other type of barrels are not effective. 
"WM" Design Double Tube Core Barrels - Spare Parts |
Description |
EWM |
AWM |
Part Number |
Weight |
Part Number |
Weight |
lbs. |
kg. |
lbs. |
kg. |
Outer Head Assembly "W" |
20398-5 |
1.8 |
0.81 |
20399-5 |
5.0 |
2.2 |
Outer Head "W" |
300130 |
1.0 |
0.45 |
300224 |
3.0 |
1.4 |
Inner Head |
100098 |
* |
* |
100066 |
1.0 |
0.45 |
Thrust Bearing |
90000-25 |
* |
* |
90000-4 |
* |
* |
Bushing |
150035-5** |
* |
* |
----- |
--- |
--- |
150035-6** |
* |
* |
100004 |
* |
* |
Locknut |
100099 |
* |
* |
100003 |
* |
* |
Rollpin |
90107-105 |
* |
* |
90107-105 |
* |
* |
Outer Tube - 5 Ft. |
100101 |
8.0 |
3.6 |
100068 |
12.0 |
5.4 |
Outer Tube - 10 Ft. |
100102 |
13.0 |
5.8 |
100069 |
24.0 |
10.8 |
Inner Tube - 5 Ft. |
300106 |
3.0 |
1.4 |
300073 |
8.0 |
3.6 |
Inner Tube - 10 Ft. |
300107 |
6.0 |
2.7 |
300074 |
15.0 |
6.8 |
Thread Protector |
101671 |
* |
* |
101672 |
* |
* |
Lifter Case |
100111 |
* |
* |
100078 |
* |
* |
Center Pin |
N/A |
--- |
--- |
--- |
--- |
--- |
Optional |
Core Lifter |
100112 |
* |
* |
100079 |
* |
* |
Bit |
----- |
--- |
--- |
----- |
--- |
--- |
Roller |
100115 |
* |
* |
100082 |
* |
* |
Ext. Coupling |
100114-5 |
2.8 |
1.3 |
100081 |
3.0 |
1.4 |
Blank Reaming Shell |
100110 |
* |
* |
100077 |
* |
* |
(For Abrasive Formations) |
Outer Tube - 5 Ft. |
100119 |
8.0 |
3.6 |
100086 |
12.0 |
5.4 |
Outer Tube - 10 Ft. |
100120 |
13.0 |
5.9 |
100087 |
24.0 |
10.9 |
|
* Less Than 1 lb. (0.45 kg.)
** Steel and bronze spacers required for EWM only. N/A - not applicable |
"WM" Design Double Tube Core Barrels - Spare Parts |
Description |
BWM |
NWM |
Part Number |
Weight |
Part Number |
Weight |
lbs. |
kg. |
lbs. |
kg. |
Outer Head Assembly "W" |
20400-8 |
8.8 |
4.0 |
20401-6 |
15.0 |
6.8 |
Outer Head "W" |
300219 |
6.0 |
2.7 |
300094 |
9.8 |
4.4 |
Inner Head |
100002 |
1.0 |
0.45 |
100034 |
3.0 |
1.4 |
Thrust Bearing |
900004 |
* |
* |
90000-8 |
1.0 |
0.45 |
Bushing |
--- |
--- |
--- |
--- |
--- |
--- |
100004 |
* |
* |
100036 |
1.0 |
0.45 |
Locknut |
100003 |
* |
* |
100035 |
* |
* |
Rollpin |
90107-105 |
* |
* |
90107-251 |
* |
* |
Outer Tube - 5 Ft. |
100006 |
17.0 |
7.7 |
100039 |
22.0 |
10.0 |
Outer Tube - 10 Ft. |
100007 |
34.0 |
15.4 |
100040 |
44.0 |
20.0 |
Inner Tube - 5 Ft. |
300011 |
10.8 |
4.5 |
300044 |
17.8 |
8.0 |
Inner Tube - 10 Ft. |
300012 |
18.0 |
8.1 |
300045 |
35.0 |
15.9 |
Thread Protector |
101673 |
* |
* |
101674 |
1.0 |
0.45 |
Lifter Case |
100016 |
* |
* |
100049 |
* |
* |
Center Pin |
--- |
--- |
--- |
100037 |
* |
* |
Optional |
Core Lifter |
100017 |
* |
* |
100050 |
* |
* |
Bit |
--- |
--- |
--- |
--- |
--- |
--- |
Roller |
100020 |
1.0 |
0.45 |
100053 |
1.8 |
0.81 |
Ext. Coupling |
100019 |
5.0 |
2.2 |
100052 |
10.0 |
4.5 |
Blank Reaming Shell |
100015 |
1.5 |
0.67 |
100048 |
2.0 |
0.9 |
(For Abrasive Formations) |
Outer Tube - 5 Ft. |
100024 |
17.0 |
7.7 |
100057 |
22.0 |
10.0 |
Outer Tube - 10 Ft. |
100025 |
34.0 |
15.4 |
100058 |
44.0 |
20.0 |
* Less Than 1 lb. (0.45 kg.). |
"NWD4" - Core Barrel Assembly |
Description |
Part Number |
Not Split |
Split |
5' NWD4 - Core Barrel Assy. NW |
020580-2 |
020580-8 |
|
5' NWD4 - Core Barrel Assy. NWJ |
020580-5 |
020580-11 |
5' Assembly Includes: |
Head Assembly, NWD4 - NW |
020581-1 |
Head Assembly, NWD4 - NWJ |
020581-2 |
Outer Tube, 5' NWD4 |
102178-2 |
Inner Tube, 5' NWD4 |
302177-2 |
Thread Protector |
102186-0 |
Core Lifter |
102184-0 |
Lifter Case |
102179-0 |
Reaming Shell |
102180-0 |
Options Available |
Reaming Shell - Hard Faced |
302189-0 |
Reaming Shell - Diamond |
Diamond Bit |
|
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