A wellhead positive choke valve is a critical flow control device in oil and gas production, designed to regulate flow rate and pressure by imposing a fixed restriction in the flowline. Unlike adjustable chokes, it features a standardized, non-adjustable orifice (per API 6A specifications), ensuring precise flow management and pressure drop.

Key Characteristics:

✔ Fixed Orifice Design – Precisely sized opening for consistent flow restriction.

✔Flow & Pressure Control – Manages production rates and prevents wellhead over/under-pressure.

✔ Safety Critical – Acts as an emergency shut-in barrier when needed.

✔ API-Compliant – Standardized orifice sizes for reliability and interchangeability.

Primary Applications:

• Wellhead & X-mas Tree Integration– Controls production flow in oil/gas wells.
• Flow Rate Adjustment– Replaces flow beans to modify production rates.
• Well Testing– Maintains stable pressure during diagnostic operations.
• Emergency Shut-off– Rapid closure capability for well control.

Choke Valve Types:

• Positive Choke– Fixed orifice for set flow/pressure regulation.
• Adjustable Choke– Variable orifice for flexible flow control.

Why It Matters:

Positive choke valves are essential for safe, efficient wellhead operations, ensuring stable production while mitigating risks of pressure surges or uncontrolled flow. Their robust, standardized design makes them a reliable cornerstone in upstream oil and gas systems.