The releasing overshot is the special external fishing tool used for fishing drilcollar ,drill pipe ,oil tube and other fishes in drilling and work over operation .
Technical specifications and parameters
| Type | O.D.
(mm) |
Max.catch size (mm) | Thread
API |
Type | O.D.
(mm) |
Max.catch size (mm) | Thread
API |
||
| Spiral grapple | Basket grapple | Spiral grapple | Basket grpple | ||||||
| LT-T89 | 89 | 60.3 | 47.6 | NC26 | LT-T194 | 194 | 159 | 141 | NC50 |
| LT-T92 | 92 | 76 | 63.5 | NC26 | LT-T200 | 200 | 159 | 141 | NC50 |
| LT-T95 | 95 | 72.6 | 66.6 | NC26 | LT-T206 | 206 | 178 | 163 | NC50 |
| LT-T102 | 102 | 73 | 60.3 | NC26 | LT-T206A | 206 | 168 | 152 | NC50 |
| LT-T105 | 105 | 85.7 | 73 | NC31 | LT-T219 | 219 | 178 | 159 | NC50 |
| LT-T114 | 114 | 89 | 75 | NC31 | LT-T232 | 232 | 203 | 187 | NC50 |
| LT-T117 | 117 | 89 | 78 | NC31 | LT-T244 | 244 | 206 | 184 | 6 5/8 REG |
| LT-T127 | 127 | 95 | 80 | NC38 | LT-T260 | 260 | 219 | 200 | 6 5/8 REG |
| LT-T143 | 143 | 120.6 | 102 | NC38 | LT-T270 | 270 | 228.6 | 209.6 | 6 5/8 REG |
| LT-T152 | 152 | 128 | 111 | NC38 | LT-T273 | 273 | 241.3 | 216 | 6 5/8 REG |
| LT-T168 | 168 | 127 | 114 | NC50 | LT-T286 | 286 | 244.5 | 225.4 | 6 5/8 REG |
| LT-T168B | 168 | 139.7 | 120.6 | NC50 | LT-T298A | 298 | 257 | 238.1 | 6 5/8 REG |
| LT-T181 | 181 | 146 | 127 | NC50 | LT-T340 | 340 | 286 | 260 | 6 5/8 REG |
