| Abstract |
A hybrid coupling of the TETRAD reservoir simulator and the WELLSIM wellbore simulator is presented. Accurately modelling wellbore flow during a reservoir simulation provides characteristics at the wellhead rather thanthe usual output of wellbottom parameters. The coupling approach used involves an initial generation of wellbore tables by WELLSIM. These tables contain wellhead parameters corresponding to a wide range of potential feed conditions for each production well, or group of production wells, and TETRAD interpolates between these parameters during a simulation run. An example problem is provided, and the relative advantages in terms of computationaltime, convergence characteristics and accuracy are discussed, with respect to a recent explicit approach to simulator coupling. |