The Reverse Circulating Junk Basket is a specialized fishing tool designed to collect small pieces of junk from the bottom of the hole using partially reversed drilling fluid circulation. This process efficiently directs bit cones, cutting blades, junk iron, hand tools, and other small debris into the basket for easy retrieval.
This tool is essential for wellbore cleanup operations, ensuring that foreign objects do not interfere with drilling or production activities.
✔ Reverse Circulation Mechanism – Uses drilling fluids to create partial reverse flow, guiding debris into the basket.
✔ Efficient Junk Collection – Effectively captures small-sized debris, including bit cones, cutting blades, and metal junk.
✔ Enhanced Wellbore Cleanup – Helps prevent obstructions and potential drilling issues.
✔ Durable and Reliable – Designed for harsh downhole environments with rugged construction.
✔ Simple Operation & Retrieval – Easily deployed and retrieved for efficient junk recovery.
🔹 Drilling Operations – Removes bit cones, cutting blades, and small metallic debris from the wellbore.
🔹 Fishing & Workover Operations – Used in well intervention to retrieve loose junk before running tools.
🔹 Wellbore Maintenance – Prevents damaged equipment or metallic fragments from affecting well performance.
🔹 Pre-Completion Cleanout – Ensures a debris-free wellbore before completion and production.
Reverse Circulating Junk Basket Specifications
Reverse Circulating Junk Basket Specifications
| Body OD (mm/inch) |
Mill Shoe OD (mm/inch) |
Max. Catch Size (mm/inch) |
Ball OD (mm/inch) |
Hole Size (mm/inch) |
Connection |
| 102 (4) | 108 (4-1/4) | 66 (2-3/5) | 32 (1-1/4) | 101.6 (4) ~ 114.3 (4-1/2) | NC26 |
| 114 (4-1/2) | 120 (4-3/4) | 80 (3-1/8) | 32 (1-1/4) | 123.8 (4-7/8) ~ 127 (5) | 2-7/8REG |
| 121 (4-3/4) | 127 (5) | 80 (3-1/8) | 32 (1-1/4) | 130 (6-1/8) ~ 139.7 (5-1/2) | 3-1/2REG |
| 130 (5-1/8) | 135 (5-5/16) | 96.5 (3-13/16) | 32 (1-1/4) | 155.6 (6-1/8) ~ 165.1 (6-1/2) | NC31 |
| 146 (5-3/4) | 151 (5-15/16) | 108 (4-1/4) | 35 (1-3/8) | 155.6 (6-1/8) ~ 165.1 (6-1/2) | NC38 |
| 165 (6-1/2) | 171 (6-3/4) | 124 (4-14/16) | 40 (1-9/16) | 212.7 (8-3/8) ~ 241.3 (9-1/2) | 4-1/2REG |
| 178 (7) | 184 (7-1/4) | 131 (5-3/16) | 43 (1-11/16) | 212.7 (8-3/8) ~ 241.3 (9-1/2) | NC50 |
| 200 (7-7/8) | 205 (8-1/16) | 157 (6-3/16) | 43 (1-11/16) | 212.7 (8-3/8) ~ 241.3 (9-1/2) | NC50 |
| 232 (9-1/8) | 237 (9-5/16) | 179 (7-1/16) | 48 (1-57/64) | 273 (10-3/4) ~ 295.3 (11-5/8) | 6-5/8REG |
| 257 (10-1/8) | 263 (10-3/8) | 200 (7-7/8) | 48 (1-57/64) | 273 (10-3/4) ~ 295.3 (11-5/8) | 6-5/8REG |
| 286 (11-1/4) | 291 (11-7/16) | 220 (8-11/16) | 48 (1-57/64) | 298.5 (11-3/4) ~ 311.2 (12-1/4) | 6-5/8REG |
| 350 (13-1/8) | 356 (14) | 280 (11-1/16) | 60 (2-23/64) | 406.4 (16) ~ 444.5 (17-1/2) | 6-5/8REG |
| 381 (15) | 387 (15-1/4) | 300 (11-13/16) | 60 (2-23/64) | 406.4 (16) ~ 444.5 (17-1/2) | 7-5/8REG |
