API 16A High-Pressure Multi-Functional Drilling Spool & Crossover Spool Series

  • Conventional well control setups often face integration issues and flow restriction between the BOP stack, casing head, and choke/kill manifolds during heavy drilling.
  • Manufactured to API Spec 16A standards, our drilling spools offer high-pressure containment (up to 25,000 Psi) with optimized main bore and side outlet configurations for fluid control.
  • Essential for well control management, mud circulation, and tie-ins to choke and kill manifolds in high-pressure onshore and offshore drilling operations.
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Main Advantage & Solution

  • Severe pressure surges and well-control risks during drilling operations.
    Engineered fully under API Spec 16A standards, featuring rated working pressures up to 25,000 Psi and continuous resistance to extreme temperatures(K, X -60℃to 180℃).
  • Inflexible manifold connection and restricted side flow lines.
    Solution: Flexible top/bottom flange and studded side outlet designs (main bore 7-1/16” to 21-1/4”, side bore 2-1/16” to 4-1/16”) allowing direct diversion to choke and kill manifolds.

Application Scenarios

  • For Drilling Contractors: Installed directly below the BOP stack and above the casing head to serve as the primary well control routing hub during drilling.
  • For Well Control Operations: Connects side outlets directly to choke and kill manifolds for safe fluid circulation, pressure relief, and well-killing procedures under high-pressure conditions.

Technical Specifications

SpecificationDetails
Working Pressure2,000 Psi to 25,000 Psi (13.8 MPa to 172.5 MPa)
Main Bore Size7-1/16” to 21-1/4”
Side Outlet Size2-1/16” to 4-1/16”
Temperature ClassK, X -60℃to 180℃
Connection TypesFlanged, Studded, or Clamped top/bottom and side outlets

Our Advantages

Factory Strength

As a premium API 6A, 16A, and 16C certified manufacturing powerhouse, our facilities are equipped with heavy CNC machining clusters and automated anti-corrosion alloy cladding systems, fully backed by an in-house CNAS laboratory capable of up to 300MPa pressure tracking and internationally witnessed PR2 gas performance testing.

Customization Service

Customized main bore and side outlet size combinations; specialized corrosion-resistant alloy (CRA) clad lining (e.g., Inconel 625) for high H₂S / CO₂ environments; custom length and end-connection flange/clamp profiles.

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