High Efficiency Junk Sub for Oilfield Downhole Fishing
Product Overview
Junk Sub (Fishing Cup) is normally used to catch and remove junks that are too heavy to be circulated preventing them from settling at the bottom of the well-bore. Typical junks are shivers and fallen objects such as carbide tooth, drill bit and bearings which are too heavy to be removed from the well-hole through conventional fluid circulation. Junk Sub’s main function is to keep well bottom clean to increase bit service life, reduce and prevent drill bit from unexpected damage.
As the outer diameter of the external bowl is bigger, the space between the external bowl and the well hole is reduced guiding most of the fluid through the cup. The mandrel diameter at the cup mouth is bigger with larger annular space. Thus, the fluid forms a swirl at the cup mouth as the fluid flows down through the cup with a sudden reduction in capacity at the bottom. Through this working principle, some heavy objects will drop in the cup and be fished out, ensuring that the well-bore bottom is cleaned.
Certification: API
Type: Petroleum Drilling Tool & Accessory
Usage: Offshore Oil and Gas Field Exploitation Machinery
Technical Specifications of Our Fishing Junk Sub
| Type | Hole Size (mm) | Connection | I.D. (mm) | O.D. (mm) |
| LB94 | 108~117.5 | 2 3/8 REG | 19 | 94 |
| LB102 | 117.5~124 | 2 7/8 REG | 32 | 102 |
| LB114 | 130~149 | 3 1/2 REG | 38 | 114 |
| LB127 | 152.4~162 | 3 1/2 REG | 38 | 127 |
| LB140 | 165~190.5 | 3 1/2 REG | 38 | 140 |
| LB168 | 190.5~216 | 4 1/2 REG | 57 | 168 |
| LB178 | 219~244.5 | 4 1/2 REG | 57 | 178 |
| LB190 | 229~273 | 4 1/2 REG | 57 | 190 |
| LB197 | 235~279.5 | 4 1/2 IF | 70 | 197 |
| LB219 | 244~295 | 6 5/8 REG | 76 | 219 |
| LB229 | 254~305 | 6 5/8 REG | 76 | 229 |
| LB245 | 292~330 | 6 5/8 REG | 76 | 245 |
| LB280 | 330~375 | 7 5/8 REG | 76 | 280 |
| LB311 | 327~375 | 7 5/8 REG | 76 | 311 |
| LB327 | 375~444.5 | 7 5/8 REG | 76 | 327 |
| LB340 | 386~456 | 7 5/8 REG | 76 | 340 |
Packaging & Shipping
Packaging Details: International Sea Transportation Packing ,Standard export packaging.
Delivery Time: Based on order quantity, normally it takes 25 days for production, Only 3 or 10 days if we have stock on your request size.
Xi'an TianRui Petroleum Machinery Equipment Co., Ltd. engages into the designing, developing, testing, manufacturing, repairing, and drilling service. Its business covers drilling rig, workover rig, solids control equipment, drilling rig supporting and drilling strings and other equipments related with petroleum. Strictly abide by ISO9001 quality system certification and API standard. Looking forward to cooperating with you!
Competitive Advantages
1. We offer high quality products at competitive price.
2. Shortest delivery time.
3. Flexible payment terms.
4. Timely after-sale service.
5. Most of our equipment can be replaceable with international brands.
6. Our products have been exported to Argentina, Egypt, US, Australia, Romania, Pakistan, Dubai, Abu Dhabi, Iran, India, Indonesia, Vietnam, Malaysia and many other countries.
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Oilfield Downhole Fishing Junk Sub Drill Spare Parts Images
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