Abstract
This paper presents the numerical models for the estimation of temperature drop in a low temperature separator and pressure drop in a horizontal pipeline. As a basis for both models, the nume-rical models for flash calculations are fully taken into consideration. These models were applied to some field cases. The calculation results were compared with measured results, and reasonable agreement was observed.
These models can be utilized for the selection of separator conditions to prevent the generation of hydrate and for the decision of an inside diameter of a horizontal pipeline in designing surface production facilities of natural gas.
