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相态恢复理论目前已成为开发相态理论中的重要组成部分,相态恢复是推算原始相态特征的重要手段。柯克亚西七二带油环凝析气藏早期由于放喷失控,未取得有代表性的流体样品,因此原始相态很难确定。文章采用相态恢复的方法对气顶和油环进行相态恢复研究,推算出原始条件下气顶和油环的相态特征,对目前气顶和油环PVT测试进行拟合和相平衡检验,认为原始条件下气顶和油环仍是处于相平衡的。相态恢复研究为柯克亚西七二带油环凝析气藏开发分析提供了基础数据,同时对同类型油气藏的开发也具有指导意义。
Phase recovery theory has now become an important part of the development of phase theory, phase recovery is an important means to calculate the original phase characteristics. Due to the uncontrolled release of spray at the early stage of Kerkaxi-seventy-two oil-ring condensate gas reservoirs, the representative fluid samples were not obtained, so the original phase was difficult to determine. In this paper, phase recovery is used to study the phase recovery of gas cap and oil ring. The phase behavior of gas cap and oil ring under initial conditions is deduced. The PVT test of gas cap and oil ring is fitted and phase-balanced , That the original conditions of the gas cap and oil ring is still in phase equilibrium. The study of phase recovery provided the basic data for the development and analysis of the oil-ring condensate gas reservoirs in the area of Kekexi West, and also instructed the development of the same types of reservoirs.