Methods and systems for gas condensate well performance prediction

A system, comprising:

• a wellhead coupled to a wellbore;
• one or more wellhead sensors coupled to the wellhead;
• and
• a reservoir simulator comprising a computer processor and coupled to the one or more wellhead sensors, wherein the reservoir simulator comprises functionality for:
• obtaining a coarse grid model comprising a plurality of wellbore radial grid portions and reservoir property data for a reservoir region of interest, wherein the reservoir property data is acquired from the one or more wellhead sensors;
• determining, during a first time step within an iterative simulation process, a plurality of pseudo-pressure values based on the reservoir property data;
• determining, during the first time step, a first plurality of skin factor values for the plurality of wellbore radial grid portions using the plurality of pseudo-pressure values, wherein the first plurality of skin factor values correspond to gas mobility within the reservoir region of interest;
• simulating, during the first time step, a first well production rate for a well within the reservoir region of interest using the first plurality of skin factor values and a first pressure distribution for the reservoir region of interest;
• and
• simulating, during a second time step within the iterative simulation process, a second well production rate for the well using a second plurality of skin factor values and a second pressure distribution for the reservoir region of interest.

A non-transitory computer readable medium storing instructions executable by a computer processor, the instructions comprising functionality for:

• obtaining, a coarse grid model comprising a plurality of wellbore radial grid portions and model data for a reservoir region of interest;
• determining, during a first time step within an iterative simulation process, a plurality of pseudo-pressure values based on the model data;
• determining, during the first time step, a first plurality of skin factor values for the plurality of wellbore radial grid portions using the plurality of pseudo-pressure values, wherein the first plurality of skin factor values correspond to gas mobility within the reservoir region of interest;
• simulating, during the first time step, a first well production rate for a well within the reservoir region of interest using the first plurality of skin factor values and a first pressure distribution for the reservoir region of interest;
• and
• simulating, during a second time step within the iterative simulation process, a second well production rate for the well using a second plurality of skin factor values and a second pressure distribution for the reservoir region of interest.