A Study on the Equilibrium Theory of Gas-liquid-solid Phases in Reservoir of Waxy Condensate Gas
Consider the capillary force and adsorption, the equilibrium theory of gas-liquid-solid phases in reservoir of waxy condensate gas is studied. Based on the Equilibrium Theory of Gas-liquid-solid phases, this paper established a Gas-liquid-solidity equilibrium model of condensate gas, which reflects the characteristics of porous media in the reservoir concerning the interface effects of capillary forces and adsorption, and established an equilibrium model taking the adsorption of solid phase for gas phase as one phase. Simulations based on the numerical continuation method showed: the amount of wax precipitation was remarkably increased for the existence of capillary forces;the tougher the surface of the reservoir was the more obvious the adsorption was with an increase in wax precipitation;in the porous media of the reservoir, it was difficult for wax to dissolve once it was segregated. Therefore, the influence of porous media should be fully taken into account during the development of condensate gas reservoir, especially reservoirs of high-temperature, high-pressure and high wax, for which the larger scale of pressure reduction is, the bigger influence for phases will be, and the more wax precipitation there will be.
gas condensate reservoir equilibrium capillary force adsorption wax content
WANG Zhenwu LI Bing SONG Yimin
North China Institute of Aerospace Engineering
国际会议
成都
英文
325-329
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）