Thermal Flow Analysis in Natural Gas Tubings in Relation to Downhole Applications

Tubing materials remain critical for gas wells because of the harsh downhole environments.The flow system in the tubing for downhole applications becomes critical for sustainable operation of the gas piping system.In the present study, gas flow system in relation downhole pipe applications is considered and flow and temperature variations in the tubing are simulated incorporating the geothermal data and the downhole conditions.A computer code developed and the COMSOL multi-physics code are used in the flow and temperature simulations.The findings revealed that the pressure drop and temperature variation along the tubing are high, which is associated with the frictional losses and the conduction heat transfer through piping to the environmental soil.The water constitute remains in liquid phase in the downhole conditions because of excessively high pressure.In addition, the pressure drop is not sufficient to create vapor phase of water in the pipe exiting region.