WELLModel^R by AsphWax

Asphaltene Deposition Simulator

The WELLModel^R is state of the art technology for simulating deposition of asphaltenes in tubings.  The WELLModel^R can do everything the NODEModel^R does, however, with simultaneous asphaltene deposition. Asphaltene deposition is an unsteady state situation, i.e., asphaltene build-up. Hence, the WELLModel^R is a much slower simulator than NODEModel^R because it requires at every pipe segment and time step fully compositional asphaltene phase behavior and asphaltene deposition calculations. The temperature, pressure, phase behavior, asphaltene deposit thickness, and hydraulics change continuously along the tubing length with asphaltene deposition, hence, the simulation is unsteady state.

The WELLModel^R uses the most advanced concepts, theories, and equations to model the momentum, heat, and mass transfer phenomena that are occurring during transportation of multiphase hydrocarbon systems under conditions that favor asphaltene deposition. In the vertical direction, the model uses a compositional version of the ORKISZEWSKI correlation developed by AsphWax. In the horizontal direction, the model uses a compositional version of the FLANAGAN-DUKLER correlation also developed by AsphWax. The asphaltene deposition module of the WELLModel^R has been developed by AsphWax after more than 20 years extensive research.

An example calculation of the WELLModel^R for a 3.5-inch OD (2.92-inch ID) 12000 feet tubing is shown below. 

For a powerpoint presentation on the WELLModel^R giving additional details about the approach and theory, click the link below:

WELLModel^R PowerPoint Presentation