Remote Intelligent Wellhead Annulus Monitoring System

This system is specifically designed for oil and gas production safety, enabling real-time online monitoring of wellhead annulus pressure. It automatically collects critical parameters such as pressure and temperature, transmitting data to the control room via wireless or wired networks. For abnormal pressure fluctuations, the system provides intelligent alerts and automated analysis to evaluate wellbore integrity effectively, preventing safety incidents caused by Sustained Casing Pressure (SCP).

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System Configuration

  • Portable Single-Well Monitoring Panel: Compact independent control box design equipped with an industrial-grade touchscreen (HMI) and PLC unit for local data visualization and logic processing.
  • High-Precision Sensor Array: Features sour-service and corrosion-resistant pressure transmitters installed directly at annulus valve outlets for accurate primary data acquisition.
  • Remote Communication Module: Built-in 4G/5G, LoRa, or cable transmission modules supporting various protocols (e.g., Modbus RTU/TCP) for seamless integration with host systems.
  • Audio-Visual Alarm Terminal: On-site high-decibel sirens and strobe lights trigger immediately when pressure exceeds preset thresholds.

Key Features

  • 24/7 Automated Monitoring: Replaces manual inspections with continuous surveillance, eliminating human recording errors and monitoring gaps.
  • Intrinsically Safe Design: Both monitoring panels and sensors comply with explosion-proof standards, suitable for harsh environments like high-H2S and high-pressure sites.
  • Intelligent Analysis: Automatically plots annulus pressure trend curves and supports historical data queries to help engineers differentiate between leaks and thermal expansion.
  • Flexible Deployment: The portable design allows for rapid installation and mobilization, ideal for temporary well testing or high-risk well site monitoring.

Technical Specifications

FeaturesSpecifications
ModelCDI-WMS-Series
Monitoring ObjectsA, B, C Annulus Pressure & Temperature
Pressure Range35Mpa/ 70 MPa / 105 MPa
Accuracy±0.25% F.S. / ±0.5% F.S.
Ex-proof RatingEx iaIIBT4Ga
Power Supply3.6V Battery
CommunicationRS485 (Modbus), 4G/5G, LoRa, WirelessHART
Display12″ Industrial Touchscreen
Operating Temp-40°C to +70°C
Alarm MethodLocal Audio-Visual & Remote Software Alert
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