Product Overview
Our venturi junk basket leverages the venturi effect to capture downhole metallic debris, mill cuttings, scale fragments and other small junk from the wellbore. When circulation fluid is pumped through the tool, the internal venturi nozzle creates a low-pressure zone that draws junk and debris into the collection chamber. A flap-type retainer or finger catcher at the chamber inlet prevents captured debris from escaping when circulation stops. The venturi design provides efficient junk collection without rotating components, reducing mechanical failure risk. The collection chamber can be emptied and the tool re-run for multiple cleanout cycles without tripping out. High-strength alloy steel construction withstands harsh downhole conditions. Standard thread connections integrate with coiled tubing BHA or workover strings.
Core Features
- Venturi effect creates suction to draw junk into collection chamber
- No rotating components, low mechanical failure risk
- Flap-type retainer prevents debris escape when circulation stops
- Collection chamber can be emptied and tool re-run without tripping
- High-strength alloy steel construction
- Standard thread connections for BHA integration
- Sour service material options available
Technical Specifications
| Model | Tool OD | Chamber Capacity | Connection | Length | Max Flow Rate | Max Pressure |
|---|---|---|---|---|---|---|
| VJB-150 | 1.687" | 0.5 gal | 1" AMMT | 36" | 2.0 bpm | 5,000 PSI |
| VJB-175 | 1.750" | 0.75 gal | 1" AMMT | 42" | 3.0 bpm | 5,000 PSI |
| VJB-200 | 2.250" | 1.25 gal | 1 1/2" AMMT | 48" | 5.0 bpm | 5,000 PSI |
Typical Applications
- Recovery of fine milling cuttings after bridge plug / composite plug milling
- Removal of accumulated sand and metal debris in horizontal well laterals
- Post-fracturing wellbore cleanup to capture proppant fragments and formation sand
- Sour well debris fishing under H₂S/CO₂ corrosive downhole conditions
- Coiled tubing sand washing combined with solid debris collection
- Cleanup work before setting packers to avoid seat contamination
- Removing scattered junk in high-deviation well
Advantages Over Conventional Passive Junk Baskets
- Active venturi suction can extract debris buried under sand, while passive baskets only catch exposed loose junk
- Higher single-run debris loading capacity reduces round trips and cuts operating cost
- Flow-driven operation requires no mechanical activation, lowering tool failure risk
- Internal baffle structure greatly reduces junk falling back during pull-out trips
- Optimized flow channel balances suction strength and circulation pressure loss
- Modular collection chamber design simplifies on-site debris dumping
FAQ
Q: What pumping flow rate is required for ideal venturi suction performance?
A: Each model has a recommended flow range in the specification table; our engineers will select suitable model after confirming your pump output.
Q: Can this tool be manufactured for sour well applications?
A: We supply NACE MR0175 / ISO 15156 certified sour service versions with full material test certificates for export clearance.
Q: What is the maximum debris size that can be captured?
A: The inlet size and collection chamber opening dimensions determine maximum particle size; contact our team with your debris size information for model recommendation.
Q: What is the production lead time?
A: Standard in-stock models ship within 3–7 working days; customized venturi junk baskets take 15–25 working days based on order quantity.
We manufacture full series downhole fishing tools with rigorous QC and complete certification. Contact us for detailed datasheet and competitive pricing.
