非达西效应对温八区块凝析气藏开发效果的影响

非达西流也称为紊乱，常发生在近井高速气流区。凝析气藏既不同于纯油藏也不同于纯气藏，在开发过程中随着地层压力不断下降会发生一系列复杂的相态变化，在近地井地区压力急剧下降，凝析油析出可能导致孔道堵塞，渗透率降低，为正确描述这类气藏的渗流规律，提高开发效果，研究非达西效应的影响有重要意义。在研究温八区块凝析气藏现有资料的基础上，应用油藏工程方法研究温八区块的紊流影响程度，同时模拟计算了不同紊流系数下的开发方案，通过指标对比分析，说明气井的非达西效应对温八区块凝析气藏开发效果较为明显。

THE EFFECT OF NON-DARCY FLOW ON DEVELOPMENT OF WEN BA GAS CONDENSATE RESERVOIR

Non-Darcy flow is often called turbulent flow, and it may occur in high gas flow areas near the wellbore. Gas condensate reservoir differs from oil reservoir or gas reservoir in that a series of phase behavior will occur in a condensate reservoir as pressure decreases during development. With pressure dropping down quickly around the well, condensation of oil takes place, leading to the plugging of pores. To better evaluate the influence of non-Darcy flow in the Wen Ba reservoir, degrees of turbulent effect on the development performance were analyzed, and development plans based on simulative calculations using different turbulent factors were compared. The results show that the effect of non-darcy flow to development is remarkable in Wen Ba.