Wellhead automation specifications
Technical Specifications – Complete Wellhead Automation Data Sheet
System Overview – WHCP Core Specifications
| Parameter | SJ Petro Specification |
|---|---|
| Wellhead Standards | API Spec 6A (21st Edition), ISO 10423, GB/T 22513, NACE MR0175 |
| Safety Performance Standards | API RP 14C, API Spec 14A, API RP 14B, IEC 61508 / IEC 61511 |
| Number of Wells Controlled | Single‑well (dedicated) or multi‑well (1–20+ wells per master panel, expandable) |
| Control Valves | SCSSV, SSV, ESDV, wing valve, choke valve, HIPPS, GVV, other hydraulic/pneumatic valves |
| Pressure Output Range | 0 – 30,000 PSI (0 – 207 MPa) – higher on request |
| Hydraulic Working Pressure | Up to 20,000 PSI for downhole valve control (pneumatic‑hydraulic systems) |
| Operating Temperature Range | -40°C to +60°C (-40°F to 140°F) – standard; -45°C arctic package available |
| Storage Temperature | Up to +85°C (185°F) |
| Enclosure Protection Rating | IP66 minimum (dust‑tight, water‑tight) |
| Enclosure Material | 304SS or 316SS stainless steel |
| Explosion‑Proof Rating | Exd II BT4 minimum (higher on request) |
| Fusible Plug Temperature | 160°F (71°C) to 281°F (138°C) – field configurable |
I/O & Control – RTU/PLC Specifications
| Parameter | SJ Petro Specification |
|---|---|
| Controller Type | Industrial‑grade RTU with integrated PLC functions and soft logic |
| Processor | Advanced 32‑bit with real‑time multitasking OS |
| I/O Capacity | Configurable up to 64 analog inputs, 128 digital inputs, 64 digital outputs per panel (expandable via I/O modules) |
| Data Logging | Embedded historian with 1‑year archive (expandable) |
| Sampling Rate | Up to 10 points/second |
| Local HMI | 7″ to 15″ sunlight‑readable touchscreen (optional) |
| Safety Logic | SIL‑2 or SIL‑3 capable (IEC 61508/61511 certified components) |
| Redundancy | Hot‑standby RTU controller option for critical wells; dual communication paths available |
| Remote Access | Secure VPN, role‑based access controls, full two‑way control |
Communication & SCADA Integration
| Parameter | SJ Petro Specification |
|---|---|
| Supported Protocols | Modbus RTU (RS‑232/RS‑485), Modbus TCP/IP, DNP3, IEC 60870‑5‑104, OPC UA, MQTT |
| Physical Communication | 4G/5G cellular, satellite (Iridium, Inmarsat), fiber optic, radio (licensed/unlicensed), direct Ethernet |
| SCADA Integration | Full integration with Emerson, Siemens, Schneider Electric, ABB, Rockwell and other major platforms |
| SCADA Functions | Real‑time data, priority alarm management (email/SMS/text), historical trending, automated reporting (daily/weekly/monthly), remote setpoint adjustment, remote valve control (authorized users) |
| Data Export | CSV, PDF, API RP 19C compliant files for production accounting |
| Alarm Types | Email notification, text/SMS, on‑screen alarm banner with acknowledgment tracking |
| Remote ESD | SCADA‑initiated emergency shutdown via solenoid valve on WHCP |
Sensors & Instruments
| Parameter | SJ Petro Specification |
|---|---|
| Pressure Transmitters | 4‑20 mA, HART protocol, accuracy ±0.1% FS, up to 20,000 PSI |
| Temperature Sensors | RTD (Pt100) or thermocouple (Type K, J), range -200°C to +600°C |
| Flow Meters | Turbine, ultrasonic or Coriolis; accuracy ±0.15% – ±0.5% depending on type |
| H₂S Gas Detectors | Electrochemical sensor, 4‑20 mA output, local alarm, SIL‑2 rated |
| Combustible Gas Detectors | Catalytic bead or infrared, 4‑20 mA output, local alarm |
| Wireless Sensors (Optional) | 5‑10 year battery life, ±0.15% FSS BFSL, IP68, C1D1/ATEX certified, LoRaWAN™/cellular/satellite |
Drive & Power – Actuator Options
| Actuator Type | Pressure Range | Best For | Fail‑Safe Mode |
|---|---|---|---|
| Hydraulic | Up to 20,000 PSI | Large‑bore high‑pressure valves, fail‑safe critical service | Close on loss of pressure (spring‑return or hydraulic accumulator) |
| Pneumatic | 80–150 PSI | Remote sites with compressed air, moderate pressure valves | Close on loss of air supply (spring‑return) |
| Electric | N/A | Precise control, adjustable chokes, remote setpoint changes | Spring‑return or battery backup close on power loss |
| Solar / Off‑Grid | N/A | Remote wells without utility power, unmanned locations | Integrated battery backup for autonomous operation, low‑power design (<50 W) |
Environmental & Certification
| Parameter | SJ Petro Specification |
|---|---|
| Operating Environment | Onshore, offshore platforms, artificial islands, cluster wells, desert, arctic, high‑humidity marine, H₂S sour service |
| Well Types Supported | Oil wells, gas wells, injection wells, water disposal wells, geothermal wells |
| Certifications | API Q1, API 6A, ISO 9001, ISO 14001, ISO 45001, CE, ATEX, IECEx |
| API Monogram | Available upon request for API 6A certified components |
| Third‑Party Inspection | SGS, BV, DNV, ABS, Lloyds (additional fee, extended lead time) |
Product Types – Wellhead Automation Configurations by Specification Level
1. Single‑Well Standalone WHCP
Best for: Remote exploration wells, small‑production wells, locations without communication infrastructure.
Key specifications: Single‑well control, pressure output 0–30,000 PSI, IP66 stainless steel enclosure, Exd II BT4 explosion‑proof, -40°C to +60°C, RTU/PLC controller, manual + automatic ESD, optional battery backup, optional data logging (no SCADA). Configurable hydraulic, pneumatic, electric or solar drive.
2. Single‑Well WHCP with Remote Monitoring (SCADA Ready)
Best for: Wells where production data needs to be viewed from a central office, but remote control is not yet required.
Key specifications: All standard WHCP specifications, plus cellular (4G/5G) or satellite communication interface, basic SCADA viewer dashboard (real‑time pressures, temperatures, valve status, email/text alarm notifications, historical trend charts). View‑only mode (remote operation not enabled) – easily upgraded to full control when needed.
3. Single‑Well WHCP with Full Remote Operation & Control
Best for: Wells where remote shutdown, valve operation and setpoint adjustments are required from a central control room.
Key specifications: All standard WHCP specifications, plus secure remote access (VPN), full two‑way control capability, authorized remote valve operation (SSV, wing valves, choke valve), remote setpoint changes for pressure/temperature thresholds, user authentication and audit logging.
4. Multi‑Well Master‑Local WHCP System (Cluster Pad)
Best for: Multi‑well pads (shale gas pads, cluster oil wells, offshore platforms, artificial islands).
Key specifications: Master panel in central equipment building, remote I/O termination boxes at each wellhead via hardened digital links (Ethernet, fiber optic or RS‑485), single operator interface controlling up to 20 wells per master panel, modular design – each well functions independently; maintenance on one well does not affect others. Up to 30 wells supported per master panel on advanced configurations.
5. Full‑Field SCADA System with Distributed WHCPs
Best for: Oil and gas fields with dozens or hundreds of wells scattered over wide geographic areas.
Key specifications: Each wellhead equipped with a smart WHCP operating autonomously when communication is lost, all WHCPs report to central SCADA server (or cloud‑based platform) via cellular, satellite, fiber optic or radio, unified field view with real‑time data, alarm management, reporting, historical trending, and remote well control from a single workstation. Supports demand‑based optimisation – automated production cycling for plunger‑lift wells and intermittent gas wells. Scalable architecture – start with a few wells and expand to hundreds over time.
6. Offshore / HPHT Wellhead Automation System
Best for: High‑pressure, high‑temperature (HPHT) wells, deep gas wells, offshore platforms requiring remote ESD.
Key specifications: API 6A pressure‑class components, sensors rated for up to 250°F (121°C), explosion‑proof hazardous area enclosure (Zone 1/Zone 2 certified), dual power supplies, dual communication paths, triple‑redundant safety logic (SIL‑3 option), corrosion‑protected marine finish, DNV/ABS/Lloyds certification available, sub‑second ESD response time.
7. Arctic‑Rated Wellhead Automation System (Cold Climate)
Best for: Siberia, Northern Canada, Alaska and other regions with sustained sub‑freezing temperatures.
Key specifications: Extended operating temperature range -45°C (-49°F), heated enclosures (electric heat tracing), low‑temperature hydraulic fluids and seals (pour point below -55°C), battery heaters with oversized battery banks, insulated wiring and weather‑proofed connectors, nitrogen‑purged instrument enclosures for freeze‑thaw cycles. Field‑proven in Russia’s Orenburg region.
8. Solar‑Powered Wellhead Automation System (Off‑Grid)
Best for: Remote wells without utility grid access, unmanned locations, environmentally sensitive areas.
Key specifications: Low‑power components (<50 W typical consumption), solar array sized for local insolation, deep‑cycle battery bank with 5–10 days autonomy depending on solar conditions, charge controller with under‑voltage/over‑voltage protection, optional cellular or satellite communication, full ESD and data logging functionality, same API 6A certified valves and safety features as grid‑powered systems.
Why Choose SJ Petro for Wellhead Automation Specifications?
Because technical specifications are only valuable when they are accurate, verifiable, and backed by a manufacturer who builds every component to those standards.
| Your Requirement | SJ Petro’s Answer |
|---|---|
| "My tender requires API 6A compliance with automatic closure.” | We design and manufacture all pressure‑containing components to API 6A (21st Edition), including new automatic closure requirements for loss of power, and provide full certification packages. |
| "I need documented SIL‑2 or SIL‑3 rating for my wellhead safety system.” | Our WHCPs can be specified with IEC 61508/61511 certified SIL‑rated logic solvers, sensors and actuators. Full SIL assessment documentation provided. |
| "I need a pressure output range that can handle my HPHT well.” | Our WHCPs support 0–30,000 PSI (207 MPa) output, with higher pressures available on request. |
| *"I operate in extreme cold – down to -45°C.”* | Our arctic package extends the operating range to -45°C (-49°F), including heated enclosures, low‑temperature hydraulics and battery heaters. Proven in Russia. |
| "I need to integrate my WHCP with my existing SCADA system.” | We support Modbus RTU/TCP, DNP3, IEC 60870‑5‑104, OPC UA and MQTT, with physical options including cellular, satellite, fiber, radio and Ethernet. |
| "I have multiple wells on a single pad and want a single control panel.” | Our master‑local system controls up to 20 wells from one master panel – each well can be operated independently, and wells can be added without replacing the entire system. |
More reasons to trust SJ Petro:
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Sinopec Group heritage – 80+ years of oilfield equipment engineering, founded in 1941, rooted in Jingzhou, Hubei
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API 6A, API Q1, ISO 9001 certified – full international certification, not "designed to” claims
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In‑house manufacturing – we design, fabricate and test our own WHCPs, RTU/PLC systems and API‑certified wellhead components
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Global track record – wellhead automation systems delivered to the Middle East, Central Asia, Russia, South America, Africa and Southeast Asia
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Complete documentation – material test reports (EN 10204 3.1), hydrostatic certificates, NDT reports, API 6A data sheets, SIL assessment reports, as‑built drawings
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Third‑party testing available – SGS, BV, DNV, ABS, Lloyds witnessed inspection on request
Frequently Asked Questions (FAQ) – Wellhead Automation Specifications
Q1: What pressure output range do your WHCPs support?
A: Our WHCPs support a pressure output range of 0 to 30,000 PSI (0–207 MPa). This is the pressure delivered to the actuators that operate downhole safety valves (SCSSV), surface safety valves (SSV), ESD valves, wing valves, choke valves, and HIPPS systems. Higher pressures are available on request – consult our engineering team with your specific well conditions.
Q2: What is the operating temperature range of your wellhead automation system?
A: Standard operating temperature range is -40°C to +60°C (-40°F to 140°F), with storage up to +85°C. For arctic applications, our cold‑climate package extends the lower limit to -45°C (-49°F). The wide temperature tolerance ensures reliable operation in desert heat, arctic cold, offshore marine environments and everything in between.
Q3: What enclosure protection and explosion‑proof ratings do your WHCPs meet?
A: Our WHCP enclosures are manufactured from 304SS or 316SS stainless steel with a minimum protection rating of IP66 – dust‑tight and protected against powerful water jets. Explosion‑proof rating meets Exd II BT4 (or higher on request), suitable for Zone 1 and Zone 2 hazardous areas. For offshore applications, we offer additional corrosion protection and hazardous area certification.
Q4: Are your wellhead automation systems SIL certified?
A: Yes. Our WHCPs can be specified with SIL‑2 or SIL‑3 rated components in accordance with IEC 61508:2010 and IEC 61511. Many NOCs and IOCs require at least SIL 2 for well shutdown valves and SIL 3 for high‑risk emergency systems. Our SIL‑rated architecture includes redundant logic solvers, certified sensors, verified actuators and full documentation. We can provide SIL assessment reports and third‑party certification.
Q5: What communication protocols do your WHCPs support for SCADA integration?
A: We support Modbus RTU (RS‑232/RS‑485), Modbus TCP/IP, DNP3, IEC 60870‑5‑104, OPC UA and MQTT. Physical communication can be via 4G/5G cellular, satellite, fiber optic, licensed/unlicensed radio, or direct Ethernet connection. Our WHCPs integrate with major SCADA platforms (Emerson, Siemens, Schneider, ABB, Rockwell) as well as plant DCS/ESD systems.
Q6: How many wells can one master WHCP control?
A: Our master‑local configuration can control up to 20 wells from a single master panel. For advanced configurations, up to 30 wells per master panel is supported. The system is modular – each well operates independently, and maintenance or removal of any module does not affect the normal production of other wells. Multiple master panels can be deployed to cover larger fields.
Q7: What documentation do you provide for API 6A compliance?
A: For every API 6A certified component, we provide material test reports (EN 10204 3.1), hydrostatic test certificates (1.5× MWP), NDT reports (MT, PT, UT), dimensional inspection reports, API 6A data sheets, as‑built drawings and letter of conformance. All documentation is traceable and ready for international tenders.
Q8: Can your WHCPs operate without grid power?
A: Yes. We offer solar‑powered WHCPs designed for remote off‑grid wells. The system includes low‑power components (<50 W typical consumption), solar array sized for local insolation, deep‑cycle battery bank with 5–10 days autonomy depending on solar conditions, and charge controller with under‑voltage/over‑voltage protection. Solar‑powered WHCPs maintain full ESD and data logging functionality – the same API 6A certified safety features as grid‑powered systems.
Q9: What is the response time for emergency shutdown (ESD)?
A: Our ESD system is designed for sub‑second response – when a setpoint is exceeded or an emergency signal is received, the WHCP immediately commands the SSV, wing valves and SCSSV to close, shutting in the well within seconds. For HIPPS applications, closure time is typically 2 seconds or less, depending on valve and actuator specifications.
Q10: Do you provide third‑party witness testing for API and SIL certification?
A: Yes. Third‑party witness testing and inspection (SGS, BV, DNV, ABS, Lloyds) is available upon request at buyer’s expense. We can arrange witnessed hydrostatic testing, NDT, dimensional inspection, functional testing and SIL verification. Additional lead time applies – please specify requirements in your request.
Q11: What is the lead time for a wellhead automation system?
A: Standard lead times from order confirmation:
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Single‑well WHCP: 6–8 weeks
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Multi‑well master‑local system (up to 6 wells): 10–12 weeks
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Full‑field SCADA system: 14–20 weeks
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Custom / arctic / offshore / HPHT packages: add 4–6 weeks
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SIL‑rated systems: add 2–4 weeks for certification documentation
Expedited delivery may be available – contact our sales team for current production slots.
Q12: What is the warranty on your wellhead automation system?
A: 12 months after commissioning or 18 months after shipment – whichever occurs first. The warranty covers manufacturing defects on all WHCP components (enclosure, PLC/RTU, power supplies, solenoid valves, pressure switches, sensors). Wear parts (filters, seals, batteries) are not covered but are available as spares. Extended warranty (up to 5 years) is available for an additional fee.
Q13: Do you provide operator training for wellhead automation systems?
A: Yes. For every WHCP purchase, we include 2–5 days of on‑site training during commissioning covering local WHCP operations, SCADA usage, alarm handling, ESD testing and basic maintenance. Digital manuals, video tutorials and remote support are also provided. Additional training (factory courses in Jingzhou, extended field training) is available at extra cost.
Q14: Do you offer financing or leasing for wellhead automation systems?
A: Yes. For qualified buyers, we offer direct financing through partner banks (terms up to 5 years), operating leases (low monthly payments) and milestone payment plans (30% deposit, 40% prior to shipment, 30% after site acceptance). Contact our sales team for a lease proposal.
Q15: How do your wellhead automation specifications compare to other manufacturers?
A: For equivalent specifications (same pressure output, same temperature range, same API 6A and SIL certifications), SJ Petro wellhead automation systems are typically 15–25% lower than Western brands, and highly competitive with other Chinese manufacturers. The difference reflects direct factory pricing, in‑house manufacturing and our Sinopec supply chain advantage. We are happy to provide a side‑by‑side comparison quote.
