ABSTRACT
Well control problems have always been difficult, as serious consequences arise if they not properly considered. In shut-in procedures, ascertaining the downhole status of the gas is essential to not only ensure effective well control measures, but also to have accurate information about pressure and temperature distributions. In particular, it is important to select the proper wellhead assembly as the maintaining maximum wellhead pressure is necessary to ensure safe shut-in processes. However, for high temperature-high pressure gas wells, it is often difficult to operate thermometers and pressure gauges. Thus, an effective and feasible method is one which predicts the distribution through the application of theory analysis technology. Predicting accurate temperature and pressure profiles in flowing wells can greatly improve the design of production facilities in petroleum and gas engineering.
