Haimo Exempted Source Water Cut Meter (XC-WCM) is a Dual-Energy Gamma Meter (DGM) equipped with a gamma source of extremely low activity, classified as exempted category by IAEA. XC-WCM determines the Water-Liquid Ratio (WLR) of three-phase (gas, water and oil) flow with Gas Volume Fraction (GVF) up to 90%, from which the water cut. The meter is independent of state of flow, phase miscibility such as emulsion, heavy oil and phase transition.
Haimo Exempted Source Water Cut Meter (XC-WCM) is a Dual-Energy Gamma Meter (DGM) equipped with a gamma source of extremely low activity, classified as exempted category by IAEA. XC-WCM determines the Water-Liquid Ratio (WLR) of three-phase (gas, water and oil) flow with Gas Volume Fraction (GVF) up to 90%, from which the water cut. The meter is independent of state of flow, phase miscibility such as emulsion, heavy oil and phase transition.
Exempted Source Water Cut Meter (XC-WCM) consists of detector, meter body, gamma source and cabinet and data processing unit.
XC-WCM utilizes the gamma ray propagation and absorption principle and dual-energy gamma ray measurement technology. Different materials have different absorption coefficients to gamma rays passing through the materials. An installed source emits gamma rays at multiple energy levels which travel through the flowing materials in the measurement pipe, and a detector measures different energy level gamma rays passed through the flow. From these measurements, oil, gas and water fractions expressed in Gas Volume Fraction (GVF) and Water Liquid Ratio (WLR) are computed in real time through the combination of gamma ray attenuation equations at two energy levels, and a unity assumption of phase fractions. Water Cut is then determined from GVF and WLR. A special feature of XC-WCM is that it uses a gamma source of extremely low activity, classified as exempted category by IAEA, making meter operations extremely safe and less mandatory paperwork.
Technical Specifications
Size | 1~4inch | |
DN50 Meter Dimension | 0.55m (L) 0.16(W) 0.38(H) | |
Material | 316/316L SS (Other Alloys Optional) | |
Electrical Certification | Ex dB IIB T4/T6 | |
Ingress Protection | IP 65/66 | |
Power Consumption | Less than 2.5 W | |
Operating Temperature | -40~100 deg. C | |
Installation | Vertical Installation, Flow From Bottom to Top | |
Max Operating Pressure | 25MPa (1500#) | |
Gamma Sensor | Exempted Source | 133Ba Gamma Source |
Source Radioactivity | 9 x 105Bq | |
Half-life | 10.55 y | |
External Leakage Dose Level | Meet the Relevant Specifications | |
Output | 4~20m Acurrent Signal/Modbus RS485 | |
Performance Specifications
GVF Range | Measurements | Typical Uncertainty |
0~90% | WLR | 2% Abs. |
Features
Accurate WLR measurements of three phase flow up to 90% GVF
Independent of emulsion effect, phase transition or viscosity
Inline meter, non intrusive
Remote operation and data acquisition
No moving parts, low maintenance
Small foot print and light weight
Simple installation and safe operation
Zero to low pressure loss
Low power consumption
Exempted source, less to no routine radioactive source management process
Applications
Water cut monitoring
Onshore and offshore
Benefits
Real-time and continuous measurements
Low capital and operation costs
Remote and automated operation
