Abstract: There are four famous models for calculation of liquid loading critical flow rate in a gas well, such as Turner model, Coleman model, Nosseir model and Li Min model. Among these models, the first three models are of small discrepancies, but Li Min model only accounts for 38 percent of Turner model in calculated value. In order to make good use of these critical flow models, a comparative study of Turner model and Li Min model is conducted using the actual field data in this paper. The result shows that the liquid loading critical flow rate in gas well determined by Li Min model is more accurate than that by Turner model.

Key words: Baimiao gas field, gas well, liquid loading, liquid loading model, critical flow rate