Abstract: A high sulfur gas field is generally associated with sulfur precipitation and deposition, change of gas phase composition and sulfur accumulation in pore throat to damage to the reservoir during its development, among which sulfur deposit is a main factor affecting such a gas reservoir development. Based on the analysis of the sulfur particles flow and precipitation in porous medium, this paper introduces the hydrokinetics model for description of particle flow in gas phase in the macroscopic gas-solid hydrokinetics theory, and develops the model for sulfur particle flow and deposition in porous medium. In this model many factors are considered, such as generation of sulfur particles, the suspending and flow in the gas phase as well as the precipitation and absorption in the pore surface.

Key words: gas reservoir, porous medium, absorption, deposition, deposit, model