论文部分内容阅读
异常高压凝析气藏的复杂性,给水侵量及水体大小的准确计算造成了极大困难.综合考虑开发过程中的凝析油析出,岩石、束缚水和凝析油弹性膨胀,水相挥发,凝析气相中水蒸汽增多,水溶气溢出及边底水的推进等复杂物理现象,根据物质平衡原理,建立了异常高压有水凝析气藏物质平衡方程,推导了水侵量及水体大小计算公式,并进行了水侵量计算影响因素敏感性评价.实例计算表明:中国某凝析气藏开发16a后,水侵量为1 273.10万m3,水体体积为162 335.18万m3,如果忽略凝析油,计算的水侵量偏大,误差高达70.980%,其次是弹性膨胀的影响,误差为10.469%,而水蒸汽为1.098%与溢出水溶气为0.696%,影响较小,但也不可忽略.
The complexity of abnormal high pressure condensate gas reservoirs, water influx and accurate calculation of water volume caused great difficulties.Considering the development of condensate oil precipitation, rock, irreducible water and condensate elastic expansion, water evaporation , The condensate vapor phase increased water vapor, water-soluble gas overflow and the edge of the water and other complex physical phenomena, according to the principle of material balance, established an abnormal pressure water condensate gas reservoir balance equation, derived water intrusion and the size of the water Calculation formula and the sensitivity evaluation of influencing factors of water influx calculation are given.Example calculation shows that the water influx of a condensate gas reservoir in China is 16.7310 million m3 and the volume of water body is 162.3518 million m3 after the development of a condensate gas reservoir in China. For oil, the calculated water influx is too large, the error is as high as 70.980%, followed by the elastic expansion, the error is 10.469%, while the water vapor is 1.098% and the spilled water is 0.696% .