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The AAPG/Datapages Combined Publications Database

Indonesian Petroleum Association


21st Annual Convention Proceedings (Volume 2), 1992
Pages 307-330

Application of the Newton - Raphson Iteration Method for Predicting Gas Flow Performance in a Pipeline

Leksono Mucharam, Andreas Andhy, Suprahadi Hasan


By manipulating the energy balance equation, gas flow Previous HitequationsNext Hit describing flow in pipes can be expressed explicitly as functions of both pressure and temperature. The formulated Previous HitequationsNext Hit in which pressure and temperature are considered as primary variables, form a system of Previous HitequationsNext Hit which are nonlinear. An iteration procedure is required to solve such Previous HitequationsNext Hit. The Newton-Raphson iteration method has been implemented to solve for pressure and temperature simultaneously. Using this model, pressure and temperature profiles for gas flow along a pipeline system can be predicted.

In this model, the formulated gas flow Previous HitequationsTop were derived by assuming that kinetic energy is negligible and the gas flow is in steady state. A phase behavior model and correlations are coupled to determine the gas fluid properties of the system.

The gas flow model was validated by comparing its predicted results to those predicted by other gas flow models e.g., the Weymouth and Panhandle models. Using this model, a parametric study was also conducted to ascertain the effects of elevation changes, temperature variaztion, pipe geometry, pipe orientation and different gas flow rates on the pressure and temperature profiles. The results demonstrate that the model can effectively model gas flow in pipelines.

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