Product Overview
Our slotted velocity string plug is a specialized blanking plug for temporary shutoff and flow regulation inside velocity strings, speed tubing and small-diameter production conduits. The unique slotted mandrel design allows controlled fluid passage even in the locked closed position, enabling well monitoring, pressure equalization and chemical injection without pulling the plug. Precision machined from corrosion-resistant alloy steel with high-temperature elastomer sealing elements, it provides reliable isolation across a wide range of downhole conditions. The plug features a robust locking mechanism that positively engages the landing nipple or tubing profile, preventing unintentional unseating during well operations. Available with standard or custom flow slot configurations to match specific well requirements. Sour-grade material options comply with NACE MR0175 / ISO 15156 for H₂S and CO₂ service.
Core Features & Benefits
- Slotted mandrel design allows controlled fluid passage in closed position
- Positive locking mechanism prevents unintentional unseating
- High-temperature elastomer sealing elements for reliable isolation
- Corrosion-resistant alloy steel construction for harsh environments
- Standard landing nipple profile compatibility
- NACE MR0175 / ISO 15156 sour service options available
- Customizable flow slot configurations for specific well requirements
- Compact design suitable for velocity string and small bore applications
Technical Specifications
| Model | Tubing Size | Plug OD | Bore ID | Connection | Length | Max Working Pressure | Max Temp |
|---|---|---|---|---|---|---|---|
| VSP-150 | 1.50" | 1.375" | 0.375" | 1" AMMT | 12" | 10,000 PSI | 350°F |
| VSP-175 | 1.75" | 1.625" | 0.500" | 1" AMMT | 14" | 10,000 PSI | 350°F |
| VSP-200 | 2.00" | 1.875" | 0.625" | 1 1/2" AMMT | 16" | 10,000 PSI | 350°F |
Custom sizes, flow slot patterns and material grades available upon request.
Typical Applications
- Velocity string temporary shutoff for well intervention
- Flow regulation in small diameter production conduits
- Well monitoring with pressure equalization capability
- Chemical injection through slotted flow path
- Temporary isolation during workover operations
Advantages Over Standard Blanking Plugs
- Slotted design allows fluid passage without pulling the plug
- Eliminates need for dedicated equalizing valves or bypass ports
- Positive locking mechanism prevents accidental unseating
- High-temperature rating suitable for deep hot wells
- Corrosion-resistant materials for sour service applications
FAQ
Q: How does the slotted plug allow fluid passage?
A: The mandrel has precision machined slots that allow controlled fluid flow even when the plug is in the locked position.
Q: What tubing sizes are supported?
A: Standard sizes cover 1.50" to 2.00" velocity strings. Custom sizes available.
Q: Is a sour service version available?
A: Yes, NACE MR0175 compliant material options are available.
Get Custom Datasheet & Factory Quote
We manufacture full series downhole plugs with rigorous quality control and complete certification. Contact us with your tubing size, pressure and temperature requirements for detailed datasheet and competitive quotation.
