Downhole Safety Valve Hydraulic Control Line

Huaxiao-Alloy’s hydraulic control lines are critical components for ensuring well integrity and operational safety in oil and gas production. These precision-engineered umbilicals provide reliable surface-to-downhole communication for controlling subsurface safety valves (SSSV) and thru-tubing packer bleed valves.

1. FUNCTIONAL PRINCIPLE

The hydraulic control line is connected from the surface to the downhole safety valve and bleed valve assembly. When hydraulic pressure is applied from the surface, it simultaneously activates both valves upon reaching the preset threshold. This allows:
  • Safe production initiation: The subsurface safety valve opens to permit fluid flow, while the bleed valve vents gas separated by electrical submersible pumps (ESP) through the annulus.
  • Emergency or planned shutdown: Rapid pressure release instantly closes both valves, isolating the tubing and annulus to secure the well against kicks or other hazards.
The system can also be configured for independent control of the subsurface safety valve based on well completion requirements.

2. KEY FEATURES

  • High-Pressure Resilience: Manufactured from corrosion-resistant alloys (e.g., 316L stainless steel) to withstand sour service environments and pressures exceeding 10,000 psi.
  • Structural Integrity: Robust outer sheath and tensile reinforcement ensure resistance to mechanical stress during installation and operation.
  • Temperature Stability: Compatible with high-temperature downhole conditions (up to 300°C) without performance degradation.
  • Customization: Available in varying diameters, lengths, and material grades to match specific well parameters.

3. QUALITY ASSURANCE

Every control line undergoes rigorous testing, including hydrostatic pressure tests, helium leak detection, and full-length non-destructive examination (NDE). Compliance with API 14A/ISO 10432 standards is verified through certified third-party validation.

4. TECHNICAL SUPPORT

Huaxiao-Alloy provides comprehensive engineering support for system integration, installation guidance, and lifecycle maintenance. Our solutions are trusted by global operators for critical well control applications.

7*24 Customer Service

Tel:

+86 21-57425826

+86 13012867759

Whatsapp:

+1 (579) 300-2733

Address

557RM, 3#LOU 1388#, JIANG YUE ROAD, Minhang District, Shanghai,  201114, SHANGHAI,  China

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