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Reversing SUB
The reversing subs is also called reversing spear which is a special tool for reversing stuck drill stem above stuck point in drilling and workover operation.
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Description
The reversing subs is also called reversing spear which is a special tool for reversing stuck drill stem above stuck point in drilling and workover operation. In treatment of stuck drill stem, it can work as a fishing pin tap in reversing operation. When fish is stuck or cannot be reversed in fishing or reversing operation, the fish can be reversed from reversing sub and the fishing drill tool is tripped out.
Specifications - Reversing Sub
Table 1. DKJ Reversing Sub (thread connection LH, catch thread RH)
Model | O.D | I.D. | Thread Conn | Fishing Thread |
DKJ105 | 105 | 14 | NC31 | NC31 |
DKJ105 | 105 | 18 | NC31 | 27/8 NU |
DKJ121 | 121 | 20 | NC38 | NC38 |
DKJ140 | 140 | 20 | NC40 | NC40 |
DKJ159 | 159 | 28 | NC46 | NC46 |
DKJ165 | 165 | 28 | NC50 | NC46 |
DKJ165 | 165 | 28 | NC50 | NC50 |
DKJ165 | 165 | 32 | NC50 | 51/2 FH |
DKJ178 | 178 | 32 | 51/2 FH | 51/2 FH |
DKJ190 | 190 | 32 | NC50 | 65/8 REG |
DKJ203 | 203 | 32 | NC50 | NC61 |
DKJ203 | 203 | 32 | NC50 | 65/8 FH |
DKJ203 | 203 | 32 | NC50 | 75/8 REG |
Specifications - Reversing Sub
Table 2. DKJ Reversing Sub (thread connection RH, catch thread LH)
Model | O.D | I.D. | Thread Conn | Fishing Thread |
DKJ105A | 105 | 14 | NC31 | NC31 |
DKJ121A | 121 | 20 | NC38 | NC38 |
DKJ146A | 146 | 25 | 41/2 FH | 41/2 FH |
DKJ168A | 168 | 28 | NC50 | NC50 |
DKJ168A | 168 | 28 | NC50 | NC46 |
DKJ178A | 178 | 32 | 51/2 FH | 51/2 FH |
DKJ178A | 178 | 32 | NC50 | NC56 |
Specifications - Reversing Sub
Table 3. DKJ Reversing Sub (thread connection RH, catch thread RH)
Model | O.D | I.D. | Thread Conn | Fishing Thread |
DKJ93B | 93 | 18 | 27/8 EU | 27/8 EU |
DKJ105B | 105 | 14 | NC31 | NC31 |
DKJ114B | 114 | 28 | 31/2 EU | 31/2 EU |
DKJ121B | 121 | 18 | NC38 | NC38 |
DKJ140B | 140 | 20 | NC40 | NC40 |
DKJ165B | 165 | 28 | NC50 | NC46 |
DKJ165B | 165 | 28 | NC50 | NC50 |
DKJ178B | 178 | 32 | 51/2 FH | 51/2 FH |
DKJ178B | 178 | 32 | NC50 | NC56 |
DKJ210B | 210 | 32 | 65/8 FH | 65/8 FH |
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