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API 7-1 Reverse Circulating Fishing Magnet for Drilling RigReverse circulating fishing magnet is a fishing tool which use of drilling fluids partly reverse in bottom hole to absorb the junk. Reverse
Reverse circulating fishing magnet is a fishing tool which use of drilling fluids partly reverse in bottom hole to absorb the junk.
Reverse circulating fishing magnet consists of top sub, outer barrel, inner barrel, steel ball, cup, ball seat, magnet core and mill guide.
Reverse circulating fishing magnet make the fish suspended by reverse flushing fluid impact bottom hole with large flowing and high pressure, and the fish is adsorbed by magnet to achieve fishing.
OD mm (inch) | Connection | Attraction (Kg/cm2) | Hole size (mm) |
86 (3 3/8) | 2 3/8REG | 7.7 | 95-110 |
95 (3 3/4) | NC23 | 7.8 | 108-137 |
105 (4 1/8) | NC31 | 9.5 | 105-140 |
146 (5 3/4) | NC38 | 8.5 | 152-184 |
180 (7 3/32) | NC50 | 7.8 | 190-215 |
200 (7 7/8) | NC50 | 7.6 | 216-241 |
225 (8 7/8) | 6 5/8REG | 7.5 | 235-270 |
254 (10) | 6 5/8REG | 7 | 265-311 |
279 (10 31/32) | 6 5/8REG | 6.9 | 295-340 |
295 (11 39/64) | 6 5/8REG | 6.9 | 310-360 |
324 (12 3/4) | 7 5/8REG | 6.9 | 365-380 |
356 (14) | 7 5/8REG | 6.9 | 380-405 |
381 (15) | 7 5/8REG | 6.9 | 406-444 |
