Abstract: Based on the gas flow model in gas reservoir and the fluid flow model in horiontal well, a couple model is developed and used for mumerical computing study of single flow performance in horizontal borehole. The complex pressure distribution in the model makes the Auid flow computation of horizontal well be fairly complicated, so the non-linear equat ion describing fAuid flow performance has been applied for space iterative computation followed by time iterative computation. This paper provides applicable computation procedure to calculate the pressure distribution of horizontal well in gas rservoir, and could be as a guide for design and production of horizontal wells.

Key words: gas rservoir, horizontal well, percolation model, pressure, distri bution