API 6A Conventional & Integral Block Christmas Tree and Wellhead Assembly

  • Conventional wellhead setups face severe spatial limits on offshore platforms and high leak risks during complex multi-string completion operations.
  • Manufactured to API Spec 6A standards, our wellhead and Christmas tree assemblies feature multi-bowl, compact, dual/triple-string, and integral block valve designs for maximum sealing integrity and reduced installation footprint.
  • Widely applied in high-pressure onshore production, offshore platform surface completions, coiled tubing operations, and well testing programs.
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Main Advantage & Solution

  • Premature wear and sealing degradation in continuous oil/gas production.
    Solution: Standardized deployment of metal-to-metal sealing technology across all master and wing valves, minimizing production downtime.
  • Complex space limitations on offshore or clustered well pads.
    Solution: Compact dual-completion or composite block tree designs that drastically reduce the wellhead footprint.
  • High risk of leakage and prolonged NPT during frequent BOP nipple-up/down.
    Solution: Compact and multi-bowl wellhead designs minimize total stack height, eliminate redundant flange connections, reduce BOP installation/removal cycles, and save significant rig time.
  • Space constraints on offshore drilling and production platforms.
    Solution: Single-riser dual wellhead and triple wellhead systems share a single marine riser while keeping flow channels completely independent, incorporating ESP cable penetrations, downhole control line passages, and sector/bevel flanges.

Application Scenarios

  • For Conventional Operators: Dependable flow control for standard land and offshore oil/gas production wells.
  • For Enhanced Oil Recovery (EOR): Reliable surface trees optimized for water injection or gas lift systems.

Technical Specifications

SpecificationDetails
Pressure Rating2,000 Psi to 25,000 Psi (13.8 MPa to 172.5 MPa)
Main Bore Sizes2-1/16” (52mm) to 7-1/16” (180mm)
Configuration TypeSingle or Dual Completion / Composite Block or Stacked Type
Operation ModeManual or Automated Hydraulic Actuation
Material ClassAA, BB, CC, DD, EE, FF, HH (Severe Sour Service)
Product Specification LevelPSL 1 ~ PSL 4

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

Fully customizable layout (Single/Dual completion, Composite Block Tree vs. Conventional Stacked Tree); custom control panel interfaces.

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