DYNAMIC MODEL OF GAS-LIQUID-SOLID POROUS FLOW WITH PHASE CHANGE OF CONDENSATE RESERVOIRS
具有蜡沉积的凝析气藏气液固微尺度变相渗流动力学模型研究

Clearly understanding of the forming, distribution and flow mechanism of condensate near well bore can apply important theoretical basis for condensate gas reservoir development. In this paper, Dynamic model of gas-liquid-solid porous flow with phase change of condensate reservoirs is founded. An effective experiment method is brought out to study distribution and flow rules of condensate near well bore region. The real porous media is modeled by the phantom micromodel with similar pore structure. The experiments were carried out in porous media under high temperature and high pressure to observe the forming, distribution and flow rules of condensate. The results indicate that the condensate accumulate easily at small pore, stagnant pore, pore throat and pore surface, which evolves to a plug gradually. It is difficulty to accumulate for the condensate in big pore. The flow manner of the condensate includes mainly three styles: schlep by gas, crawls along pore wall and plug flow.