Preliminary Study of Aerodinamics Analysis of PTS Testing of Geothermal Well using Computational Solution

Abstract

One of the survey conducted to acquire and evaluate condition of geothermal wells is PTS (Pressure Temperature Spinner) Survey. PTS Survey can be conducted when the wells either in well flowing or in injecting condition. The components of PTS equipment include rotating impeller and sensor to acquire the pressure and temperature condition.This current research discusses aerodynamics aspects: pressure, temperature, and velocity distribution of PTS tools in a geothermal well by using Computational or Numerical Solution. The well data is obtained from the actual data in “X” Geothermal Well. Four configurations were studied such as vertical straight well, directional well with inclination 20°, directional well with inclination 50°, and well while there is contraction at the casing’s diameter size. The study found that the results quite good and uniform among all the wells configuration. Pressure of steam increasing (850 kPa) at the inlet, while decreasing at the outlet area (800-825 kPa). The temperature is higher inside the PTS equipment (480 K) than the outside (475 K) due to the friction between impeller and steam. On the other hand contact between solid part of the PTS equipment and steam caused the velocity of the fluid inside the PTS equipment decreases (0-50 m/s) compared to the outer area (120 m/s).