The flowrate measurement technology for the wet gas with intermittent slug flow was developed. The dimensionless analysis and the Chisholm correlation were applied to build the overreading correlation and compute the liquid flow rate. The flowrate of intermittent slug was regarded as the sum of the flowrate in the film region and the slug region. The wet gas measurement system was applied directly in the film region. The gas and liquid flowrates in the slug region were obtained by the slug closure model. By studying the effect of the slug on the pipe pressure and differential pressures of Venturi tube

a new method was carried out to determine liquid slug. Logistic regression was attached with it to improve the accuracy of the method. Industrial field testing for 19 d

the results showed that

due to the use of slug flow compensation technology

the cumulative deviation of gas flowrate was improved from 14% to 1.08% and the cumulative deviation of liquid flowrate was improved from -57% to -11%.