Coring tool is a tool to obtain formation sample operation in the petroleum, geologic exploration drilling .
Type |
Outer Barrel OD×ID (mm) |
Inner Tube OD×ID (mm) |
Top Thread | Bit Size (in) |
Core Diameter (mm) |
8—3 | 180×144 | 127×111 | 4 1/2″ IF | 8 1/2″ | 105 |
6—3 | 133×101 | 88.9×75.9 | 3 1/2″ IF | 6 1/2″ | 70 |
5—4 | 121×93 | 88×72 | 3 1/2″ IF | 5 7/8″—6 1/2″ | 66 |
6—4 | 133×101 | 88×76 | 3 1/2″ IF | 5 7/8″—6 1/2″ | 70 |
7—4 | 172×136 | 121×108 | 4 1/2″ IF | 7 1/2″—9 5/8″ | 101 |
8—4 | 180×144 | 127×112 | 4 1/2″ IF | 8 1/2″—9 5/8″ | 105 |