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Core Barrel Specifications
 
"WG" Design - Single Tube Core Barrels
Nominal Dimensions
Size
Single Tube
Set
Reaming
Shell
Set Bit
O.D.
I.D.
O.D.
O.D.
I.D.
EWG
inch
1.437
0.937
1.485
1.470
0.845
mm.
36.5
23.8
37.7
37.3
21.4
AWG
inch
1.812
1.281
1.890
1.875
1.185
mm.
46.0
32.5
48.0
47.6
30.0
BWG
inch
2.281
1.750
2.360
2.345
1.655
mm.
57.9
44.4
59.9
59.5
42.0
NWG
inch
2.906
2.250
2.980
2.965
2.155
mm.
73.8
57.1
75.6
75.3
54.7
HWG
inch
3.750
3.125
3.907
3.890
3.000
mm.
95.2
79.3
99.2
98.8
76.2
Note:  The "G" Design core barrels replace the "X" Design core barrels.
Note:  The "X" Design core barrels are now obsolete.

"WG" Design - Double Tube Core Barrels
Nominal Dimensions
Size
Double Tube
Set
Reaming
Shell
Set Bit
Outer
Tube
Inner
Tube
O.D.
I.D.
O.D.
O.D.
I.D.
EWG
inch
1.437
0.937
1.485
1.470
0.845
mm.
36.5
23.8
37.7
37.3
21.4
AWG
inch
1.812
1.250
1.890
1.875
1.185
mm.
46.0
31.7
48.0
47.6
30.0
BWG
inch
2.281
1.718
2.360
2.345
1.655
mm.
57.9
43.6
59.9
59.5
42.0
NWG
inch
2.906
2.250
2.980
2.965
2.155
mm.
73.8
57.1
75.6
75.3
54.7
HWG
inch
3.750
3.062
3.907
3.890
3.000
mm.
95.2
77.7
99.2
98.8
76.2

"WM" Design - Core Barrels Nominal Dimensions
Size
Outer
Tube
Inner
Tube
Set
Reaming
Shell
Set Bit
O.D.
I.D.
O.D.
O.D.
I.D.
EWM
inch
1.437
0.937
1.485
1.470
0.845
mm.
36.5
23.8
37.7
37.3
21.4
AWM
inch
1.812
1.250
1.890
1.875
1.185
mm.
46.0
31.7
48.0
47.6
30.0
BWM
inch
2.281
1.718
2.360
2.345
1.655
mm.
57.9
43.6
59.9
59.5
42.0
NWM
inch
2.906
2.250
2.980
2.965
2.155
mm.
73.8
57.1
75.6
75.3
54.7

Large Diameter Design - Core Barrels
Nominal Dimensions
Size
Outer
Tube
Inner
Tube
Set
Reaming
Shell
Set Bit
Casing
Size
I.D.  x  O.D.
O.D.
I.D.
O.D.
O.D.
I.D.
2-3/4"  x  3-7/8"
inch
3.625
2.781
3.875
3.840
2.690
HX or HW
mm.
92.0
70.6
98.4
97.5
68.3
4"  x  5-1/2"
inch
5.250
4.125
5.495
5.435
3.970
SW
mm.
133.3
104.7
139.5
138.0
100.8
6"  x  7-3/4"
inch
7.250
6.125
7.750
7.655
5.970
ZW
mm.
184.1
155.5
196.8
194.4
151.6

  Note:   Standard core barrel lengths are 5 ft. (1.52 m.) and 10 ft. (3.05 m.).


 
     
 
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