特种油气藏2017，Vol.24Issue(5)：107-110,4.DOI:10.3969/j.issn.1006-6535.2017.05.019
考虑反凝析影响的边水凝析气藏 见水时间预测模型
Prediction model for Water Breakthrough Time in Gas Condensate Reservoirs with Edge Water Considering Retrograde Condensate Impact
摘要
Abstract
During the production of gas condensate reservoirs,condensate oil is separated in near wellbore area and forms condensate oil gathering area when bottomhole pressure is lower than dew point pressure. The effect of con-densate oil saturation on gas and water permeability in condensate oil gathering area is not considered in existing prediction models for breakthrough time,leading to discrepancy in prediction results. In order to predict break-through time of gas condensate reservoirs more accurately,it is proposed to use the ratio of gas/water mobility ratio in area with retrograde condensate and that in area without retrograde condensate to reflect the relative permeability change of water phase in retrograde condensate area and derive a new model to predict breakthrough time in gas condensate reservoirs with edge water,based on permeability rule of fluid point particle in porous media. The field research shows that the difference in gas and water permeability in area with retrograde condensate and that in area without retrograde condensate must be considered in the prediction of gas condensate reservoirs and that severer ret-rograde condensate results in larger gas/water mobility ratio in retrograde condensate area and earlier breakthrough time. The new model provides a deeper analysis on the effect of retrograde condensate on edge water advance in gas condensate reservoirs with edge water and provides guidance for breakthrough prediction of breakthrough time in gas condensate reservoirs with edge water.关键词
边水凝析气藏/反凝析/相对渗透率/见水时间/物理模型/数值模拟Key words
gas condensate reservoir with edge water/retrograde condensate/relative permeability/breakthrough time/physical model/numerical simulation分类
能源科技引用本文复制引用
李元生,杨志兴,伍锐东,藤赛男..考虑反凝析影响的边水凝析气藏 见水时间预测模型[J].特种油气藏,2017,24(5):107-110,4.基金项目
国家科技重大专项"东海厚层非均质性大型气田有效开发关键技术"(2016ZX05027004) （2016ZX05027004）
