Wellhead Safety Control System
FST has massive project experience in the design, manufacturing, and commisionning of the wellhead safety control system (WHCP), which can be single-well controlling, multi-well controlling, or solar powered. The applicable scenarios can be onshore, offshore, desert areas, or artificial islands.
PLC Integrated Wellhead Application
For wellheads that require high reliability and programmable logic control, FST has developed the PLC-based wellhead control system. The system is designed with advanced fault-tolerant, fail-safe programmable logic controllers, internationally certified safety I/O modules, simplex/redundant configurations, and communication modules for intelligent control of the wellhead.
Power sources: manual hydraulic pumps and electric hydraulic pumps. p>
Control objects: surface safety valves and subsurface safety valves. p>
Applicable working conditions: wellheads that require high reliability and programmable logic control. p>
Desert and Remote Wellhead Applications
For areas where power supply is unavailable in desert and remote regions, FST has developed a solar-powered wellhead safety control system that uses solar energy as a power source. For natural gas reservoirs, a gas wellhead safety control system can also be designed to use natural gas as a power source in order to reduce costs. p>
Considering the difficulty of inspecting wells in person in desert and remote areas, these types of wells are remotely controlled and monitored by RTU. p>
Power source: solar energy, electric hydraulic pump. p>
Control objects: subsurface safety valves, surface safety valves, etc. p>
Applicable working conditions: unmanned areas in remote areas such as deserts, Gobi, mountains, etc. p>
Application on Offshore Oil and Gas Wellhead on Ocean Platform
Based on the characteristic of centralized control of multiple oil/gas wells on the ocean, FST has developed a multi-well wellhead safety control system, which contains multiple wellhead control modules. Each control module controls one well independently without interference, which facilitates maintenance and replacement. p>
The control system can be designed according to customer requirements as pneumatic-hydraulic, electric-pneumatic, electric-hydraulic systems with remote control interfaces.
Power source: manual hydraulic pump, electric hydraulic pump, pneumatic hydraulic pump. p>
Control objects: surface safety valve and subsurface safety valve, etc. p>
Applicable working conditions: oil and gas wellheads on offshore platforms. p>
Application in HPHT and hydrongen sulfide-enriched wells
Designed for oil/natural gas wells with special working conditions such as high temperature, high pressure, and hydrogen sulfide-enriched. p>
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The high-pressure and hydrogen sulfide-enriched wellhead safety control system mainly adopts pneumatic-hydraulic or electric-hydraulic type, and the communication and safety control system is integrated with RTU and SCADA, which can easily achieve local and remote control. This type of wellhead control panel is suitable for service environments containing H₂S and CO2. The valves, fittings, and tubings are selected according to the characteristics of media.
Power source: manual hydraulic pump, electric hydraulic pump, pneumatic hydraulic pump. p>
Control objects: surface safety valve and subsurface safety valve, etc. p>
Applicable working conditions: oil/natural gas wells with special working conditions such as high temperature, high pressure, and sour gas. p>
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