Gas Metering Device for Oil and Gas Wells
The gas metering device for oil and gas wells (hereinafter referred to as the device) is a device for gas separation and measurement of oil well output. It is applicable to the oil and gas wells with large-capacity high-pressure. The device is installed in front of the buffer tank of the oil and gas well. After effectively separating the gas and liquid from the oil well, it measures the gas and liquid after the separation, and then the gas and liquid are mixed or respectively input into the buffer tank. The device increases the pump filling coefficient while reducing the effect of the gas return pump caused by wellhead backpressure, and further reduces the impact of slug flow and mist flow on buffer tank, and substantially increases the operation efficiency and service life of buffer tank. The device has a series of advantage, such as simple structure, convenient operation, no manual adjustment required, evident separation effect, accurate measurement, etc. Furthermore, the equipped PLC intelligent control system in the device enables real time acquisition, analysis and display of various production parameters. It can accurately, timely and comprehensively reflect the production and operation conditions, make accurate judgment and timely handling of anomalies in operation, so the level of automation of oil field work can be improved.
Ø Gas and liquid separation and control part
Ø Supporting measuring instruments;
Ø PLC intelligent control system;
Ø Electrical auxiliary heat and external insulation system.
l Measurement function
Ø Gas measurement of inlet pipeline;
Ø Liquid temperature measurement of inlet pipeline;
Ø Liquid pressure measurement of inlet and outlet pipelines.
Automatic control function
Ø PLC system controls the actuator to adjust the air intake;
Ø In the low temperature season, automatic electric auxiliary heating can be done on the important parts of the device.
Ø Operating abnormal alarm function;
Ø High pressure alarm function;
Ø Low temperature alarm function.
Data collection, analysis and display functions
Ø Collect instantaneous and cumulative gas volume, pressure and temperature parameters and display the data and curves in real time;
Ø Real-time online analysis of various parameters, and automatic judgment of production and equipment operation;
Ø With instantaneous, cumulative gas volume and pressure, temperature historical data query and report generation function;
Technical indicators and parameters
|Technical indicator||Specific parameters||Remark|
|Gas handling capacity (non segmented range)||60～1500000 Nm³/d|
|Inlet connecting flange||DN50、DN100、DN150||GB/T 9119-2000|
|Gas outlet connecting flange||DN50、DN100、DN150||GB/T 9119-2000|
|Design pressure||1.0-75 MPa|
|Power supply||24V DAC 0.5KW||Apply in gas meter, temperature transmitter and pressure transmitter|
|220V VAC 3.5KW||Apply in heat tracing system and control system|