Numerical study of pipeline leak detection for gas-liquid stratified flow

Multiphase flows are of paramount importance in the oil and gas industry, considering that most petroleum industries produce transport simultaneously. However, systematic research on pipeline leakage conveying more than one phase at a time is lacking attention. In this work, numerical method proposed to investigate effect two-phase gas-liquid leak flow behaviour subsea natural pipeline. The results simulations have been validated against latest experimental data reported literature, good agreement has obtained. sizes, longitudinal locations, multiple leakages axial positions pressure gradient, rate volume fractions were systematically investigated. show field parameters provide pertinent indicators detection. particular, upstream could serve as critical indicator for detecting even if size small. Whereas, downstream dominant monitoring chosen also reveal when two leaks with different sizes co-occur single pipe, small becomes difficult its below 25% large size. event double equal closer pipe easier detect.