Product Description
The LL-F type reverse circulation junk basket is used to retrieve all types of small junk objects such as cone, cutter, hand tool and junks from the bottom hole. During drilling operation, it produces a local reverse circulation of fluid at well core so as to effect a complete recovery of junk in the junk basket. Especially when PDC bit is used, cleaning bottom well by the tool becmes very necessary to ensure the bit with a normal application. The reverse circulation junk basket therefore becomes an essential tool in oil, geology exploration and drilling engineering.
KAIDI Reverse Circulation Junk Basket (RCJB) is designed to remove all types of small junk objects from the well hole. The tool's main feature is that it eliminates the possibility of pulling a wet string during fishing operation with its reverse drainage design. The RCJB can also be used as a fish magnet when fitted with a magnet insert, while maintaining its reverse fluid circulation feature.
Operation
KAIDI RCJB is normally attached at the bottom of the fishing string, lowered to a point several feet from the bottom of the well. Begin circulation of the junk basket to wash the hole. Stop circulation and drop the steel ball. (When the steel ball is dropped into the valve seat, reverse fluid circulation is activated. The fluid travels outward and downward through the inner passage of the barrel and out through the vents in the lower end. The fluid is then deflected to the center of the tool and up through the return holes in the upper end of the barrel. The reverse fluid circulation carries the junk into the barrel above the junk catcher. Restart the circulation; slowly rotate the junk basket while lowering the tool until a 10-inch core has been cut. Stop rotation and circulation and pull the tool and junk from the hole.
Type B Mill Shoe Type C Mill Shoe Magnet Insert Finger Shoe
Specifications - Reverse Circulation Junk Basket
Reverse Circulation Junk Basket (L11)
Top Sub
Barrel
Mill Shoe
Junk Catcher
| Model |
OD of barrel (mm) |
Max. fishing size (mm) |
OD of steel ball (mm) |
Connection (Box) |
Hole size (mm) |
Product Code |
| LL-F86 |
86 |
51 |
23 |
NC26 |
92~98 |
L11-86000 |
| LL-F89 |
89 |
57 |
23 |
NC26 |
95~102 |
L11-89000 |
| LL-F92 |
92 |
57 |
23 |
NC26 |
95~102 |
L11-920000 |
| LL-F101 |
101 |
63.5 |
23 |
NC26 |
105~114 |
L11-101000 |
| LL-F114 |
114 |
78 |
28 |
NC31 |
117~127 |
L11-114000 |
| LL-F123 |
123 |
90.5 |
28 |
NC31 |
130~140 |
L11-123000 |
| LL-F130 |
130 |
95 |
34 |
NC38 |
143~152 |
L11-130200 |
| LL-F146 |
146 |
111 |
34 |
NC38 |
155~165 |
L11-146000 |
| LL-F159 |
159 |
121 |
34 |
NC46 |
168~187 |
L11-159100 |
| LL-F178 |
178 |
130 |
42 |
NC50 |
190~210 |
L11-178000 |
| LL-F200 |
200 |
154 |
42 |
NC50 |
212~241 |
L11-200000 |
| LL-F206 |
206 |
157 |
45 |
NC50 |
216~241 |
L11-206000 |
| LL-F232 |
232 |
179 |
57 |
NC50 |
244~270 |
L11-232000 |
| LL-F257 |
257 |
194 |
57 |
6 5/8REG |
273~295 |
L11-257000 |
| LL-F279 |
279 |
211 |
57 |
6 5/8REG |
298~317 |
L11-279000 |
| LL-F301 |
301 |
219 |
57 |
6 5/8REG |
320~346 |
L11-301000 |
| LL-F330 |
330 |
249 |
57 |
6 5/8REG |
349~406 |
L11-330000 |
| LL-F381 |
381 |
279 |
57 |
6 5/8REG |
406~444 |
L11-381000 |
| LL-F508 |
508 |
406 |
57 |
7 5/8REG |
559~660 |
L11-508000 |
| LL-F559 |
559 |
426 |
57 |
7 5/8REG |
610~711 |
L11-559000 |
Contact for Technical Support:
LAURA Manager
FAQ for Oilfield Machinery Products
Q1:Do your products comply with API/ISO international standards?
Answer: Yes, our products fully comply with API Spec 7-1, API 6A, and are certified with ISO 9001.
Q2:How do we ensure quality?
Answer:Production samples are always made before mass production.
A final inspection is always conducted before shipment.
Q3:: Are you the manufacturer? What petroleum machinery products do you mainly offer?
Answer: Yes, we are a professional manufacturer integrating R&D, production and export with our own production base. Our main products include:
Fishing Tools (e.g., overshots, fishing spears, milling shoes
Drilling Tools (e.g., drill pipes, stabilizers, reamers)
Valves (e.g., gate valves, check valves, safety valves)
Other downhole equipment, etc.
Q4:What is the warranty period? How to claim it?
Answer: 12-month warranty. Provide the serial number and fault description for a response within 48 hours.
Q5:Do you provide technical training or on-site support?
Answer: Free remote training is available. On-site support costs are negotiable.
Q6: What is the lead time for delivery?
Answer: 30 days for standard products; 60-90 days for customized orders (subject to complexity).
Q7: What shipping methods do you offer? How to track orders?
Answer: Sea express shipping available. Tracking number and link provided after shipment.
Q8: How do you package the products to prevent rust during sea shipping?**
Answer:Packaging includes anti-rust oil, vacuum sealing, wooden crates, and desiccants.*
Q9:Do you accept customized orders?
Answer: OEM is accepted. Submit detailed drawings or specifications for a quote.
Q10:How to get your latest product catalog?For any further detailed inquiries, please feel free to contact us .
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