FISHING TOOLS
1.Fishing magnet
The reverse circulation fishing magnet can magnetize and absorb small fallen metal substances, such as gear wheel,palm,tongs‘ tooth,etc. By its permanent magnet so as to make fishing effective and purify the bottom of well.
Specification:
| Nominal Dia mm | Thread connection | Wellbore Dia mm | Suction kN |
| 86 | NC26 (2-3/8IF0 | 95-108 | ≥3 |
| 115 | NC31 | 121-137 | ≥6 |
| 125 | NC38(3-1/2IF | 137-149 | ≥7 |
| 145 | 149-184 | ≥9 | |
| 190 | NC50(4-1/2IF) | 203-229 | ≥13 |
| 200 | 216-241 | ≥15 | |
| 265 | 6-5/8REG | 279-311 | ≥22 |
The suitable temperature(℃) for above is : P≤120;G≤250
2.Junk retriever
Junk retriever is a general fishing tool which has simple structured and easy made.
It is mainly used for fishing of down-hole irregular catches. commonly called”junk catcher”.
Specification:
| Type | Hole size | OD of Barel mm | Max. Catch Dia.mm | Max Swallow mm | Bore Dia.mm | Mill Shoe OD.(m.m) | Top Connection |
| YL445 | 17 1/2″ | 419 | 311 | 1140 | 35 | 429 | 7 5/8 REG |
| YL331 | 12 1/4″ | 298 | 222 | 760 | 35 | 308 | 6 5/8 REG |
| YL215 | 8 1/2″ | 206 | 156 | 505 | 35 | 213 | 4 1/2IF |
| YL152 | 6″ | 146 | 108 | 505 | 29 | 150 | 31/2IF |
3.Junk Sub
Junk Sub Type LB is a practical and effective tool.During drilling operation, it can be used to recover the heavier drilling cuttings or metal chips which are difficult to be lifted out of the borehole by normal drilling fluid circulation.
Specification:
| Type | wellbore Dia.(m.m) | Thread connection | I.D.(m.m) | O.D.(m.m) |
| LB94 | 108~117.5 | 2-3/8 REG | 19 | 94 |
| LB127 | 152.4~162 | 3-1/2 REG | 38 | 127 |
| LB190 | 229~273 | 4-1/2 REG | 57 | 190 |
| LB245 | 292~330 | 6-5/8 REG | 76 | 245 |
| LB340 | 386~456 | 7-5/8 REG | 76 | 340 |
4.Grapple Releasing Spear
Grapple Releasing Spear Type LM is a simply constructed and high strength fishing tool by which fishing job is performed through the interior bore of the fish. It is mainly used to recover the lost drill string, tubing and casing, and can also be used in conjunction with internal cutter, bumper jars, etc. to finish cutting and recovering at the same time.
Specification:
| Type | Catch size (m.m) | Allowed LPAD (KN) | Thread connection |
| LM-T89 | 54-76 | 320 | 2-7/8 TBG |
| LM-T108 | 62-128 | 470 | NC31 |
| LM-T159 | 108-127 | 1010 | NC50 |
| LM-T219 | 190-323 | 1920 | 6-5/8 REG |
| LM-T340 | 216-486 | 2600 | 7-5/8REG |
5.Taper tap & Die collar
Taper tap is a s pecial tool cutting thread and fishing interually in dropped objects such as tubing, drill-pipe, wash-over pipe, packer, water flow allocator.
The tool is especially a great success in catch of objects accompaied with coupling.
The taper tap can effect different fishing operations when equipped with RH thread or LH thread drill pipes and other tools.
Specifcation:
| Series | Connection | Catch size |
| GZ86 | NC26 | 39~89 |
| GZ86 | NC31 | 30~100 |
| GZ86 | NC38 | 45~103 |
- Die collars
Die collar is a special external fishing tool which is engaged on the outside wall of tubing objects such as oil tubing and drillpipe.
It can be used in fishing cylindrical objects without inner bore or stucked inner bore.
Specification:
| Series | Connection | Catch size |
| MZ-NC26 | NC26 | 41~80 |
| MZ-NC31 | NC31 | 69~95 |
| MZ-NC38 | NC38 | 86~118 |
| MZ-NC50 | NC50 | 110~135 |
| MZ-6 5/8 REG | 6-5/8 REG | 168 |
7.High efficiency milling shoe
High efficiency milling shoe is a specialized tool for milling downhole fallen objects and repairing fish top.
External tooth mill shoe:it is used to repair internal bore of fish top,scraper relict in the casing and small quantitative burr.
Inter tooth mill shoe:it is used to repair tube, drilling rod body and damaged fish top,etc.
Washover mill shoe: it is used to washover and release stucking.
Specification:
| Working Dia In(mm) |
Neck Dia.(m.m) | Thread connection | Water hole.(m.m) | All length (m.m) |
| 5-1/2″(140) | 111 | 2-7/8 IF | 20 | 330 |
| 7-5/8″ (194) | 165 | 4-1/2 IF | 30 | 405 |
| 8-5/8″(219) | 197 | 6-5/8 REG | 35 | 425 |
8.Releasing and revering overshot
Releasing and revering overshot is a fishing tools which can fish from the outside.
The spiral grapple is used to the fish diameter is near the maximum catch size.
The basket grapple is used to the fish diameter is substantially less than maximum catch size.
Specification:
| Type | O.D.(m.m) | Thread connection | Max.Catch Size (mm) Spiral Grapple | Max.Catch Size(mm) Basket Grapple |
| LT-T105 | 105 | NC31 | 82.5 | 70.5 |
| LT-T143 | 143 | NC38 | 121 | 108 |
| LT-T162 | 162 | NC476 | 133.5 | 117.5 |
| LT-T200 | 200 | NC50 | 159 | 141 |
| LT-T213 | 213 | NC50 | 178 | 162 |
| LT-T241 | 241 | NC50 | 213 | 197 |
| LT-T286 | 286 | 6-5/8 REG | 244.5 | 225.5 |
9.Impression Block
The impression block is an assembly of steel body and a soft lead founded at the bottom.
It is used to know the accurate depth, shape of fishing and check the deformation shape of casing diameter.
Specifcation:
| O.D | I.D | Upper & lower end connection (BOX) | All length |
| 8 (203) | 3-1/16(78) | 6-5/8 REG-L | 24(610) |
| 7-1/4(184) | 2-13/16(71.4) | 5-1/2 FH | 24(610) |
| 6-29/32(184) | 2-13/16(71.4) | NC50 | 24(610) |
| 6-5/8(168) | 2-13/16(71.4) | NC50 | 24(610) |
| 5-5/16(135) | 1-3/4(44.5) | NC38 | 24(610) |