Sunry Petroleum Equipment_Surface Safety Valve (SSV)

Surface safety valve (SSV) functions as a hydraulically operated fail-safe gate valve, ideal for managing high flow rates, high pressures, and the presence of H2S in oil and gas wells. This crucial equipment ensures a swift shutdown of the upstream well in situations such as overpressure, system failures, downstream leaks, or any other critical well emergencies requiring immediate cessation.

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The SSV is equipped with an emergency shutdown device (ESD) that can be activated remotely. It relies on high or low-pressure pilot actuators for automatic triggering during emergencies, significantly minimizing the risk of injuries to personnel.

Various models of SSVs are available to cater to different well conditions, including diverse pressures, temperatures, and flow rates. These models also come with different connection options, such as hammer union or API-6A flanges.

All SSVs undergo rigorous manufacturing standards, verified by Type Approval or Design Verification Review, and come with Certificates of Conformity along with comprehensive quality documentation.

Safety valves serve as vital protectors for your equipment, effectively preventing damage to pressure vessels and averting potential explosions when installed correctly. They act as automatic fail-safes, opening the valve disc to discharge fluid when inlet pressure reaches a predetermined threshold.

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It's often mandated to have a means for well closure capable of natural flow to the surface. Utilizing a subsurface safety valve (SSSV) ensures this emergency shut-off capability. Typically, fail-safe systems are managed from a custom-built control panel located on the surface.

The Surface-Controlled Subsurface Safety Valve (SCSSV) incorporates a ¼” stainless steel control line attached to the outside of the well tubing and installed alongside the production tubing. Depending on wellhead pressure, up to 10,000 psi might be needed in the control line to maintain the valve in the open position. PHC's control panels, featuring Haskel pump line, deliver the necessary hydraulic pressure for optimal control.

PHC has extensive experience in constructing custom SCSSV control panels for diverse client requirements. Recently, we completed three custom well control panels for a significant overseas project, each panel featuring unique specifications tailored to the project needs.

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Understanding the intricacies of surface and subsurface safety valves (SSV and SCSSV) is crucial for safe and efficient well operation. Here are some frequently asked questions and additional insights to help you make informed decisions:

What is the primary function of a surface safety valve?

Surface safety valves are designed to halt the flow of oil or gas from a well in emergency situations, such as equipment failures, overpressure, or leaks, ensuring the safety and integrity of the well and surrounding environment.

How does an emergency shutdown device (ESD) enhance safety?

An emergency shutdown device (ESD) can automatically trigger the closure of the SSV in high or low-pressure scenarios, potentially preventing catastrophic failures and reducing the risk of injury to personnel.

Why are different models of SSVs necessary?

Diverse well conditions, including varying pressures, temperatures, and flow rates, necessitate different SSV models to ensure optimal performance and safety under specific operational scenarios.

What role do control panels play in managing SCSSVs?

Control panels are essential for managing hydraulic pressure to keep SCSSVs open or closed as needed. Advanced panels like those built by PHC feature reliable components such as the Haskel pump line to maintain precise control over well operations.

By addressing these key questions and details, we aim to provide a clearer understanding of surface and subsurface safety valves. For more personalized advice or to discuss your specific needs, please feel free to reach out to us.