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呼图壁气田是存在边底水的贫凝析气藏,目前开发进入稳产后期,部分气井开始见水,但地层水的分布及规模尚不清楚,这对气田的持续开发不利。通过背斜构造、断层和储集层非均质性等地质因素对地层水的分布进行了分析,对水侵特征进行了总结,认为气藏水侵具有差异性,各气井见水具一定的时间和空间顺序,水体总体由西向东向气区范围推进。结合各气井的水侵特征,将气藏水侵分为边水横侵型、底水锥进型、底水纵窜型和边底水横侵型等4种主要模式。
Hutubi gas field is a lean condensate gas reservoir with edge water. At present, some gas wells begin to see water in the late stage of development. However, the distribution and scale of formation water are not yet clear, which is unfavorable to the continuous development of the gas field. The distribution of formation water is analyzed by geological factors such as anticline structure, fault and reservoir heterogeneity, and the characteristics of water intrusion are summarized. It is considered that there is difference in water invasion of reservoirs. Time and space order, the overall water from west to east gas area to promote. Combining with the water intrusion features of gas wells, the water intrusion into four main modes of water intrusion is the horizontal type of edge water, the bottom water cone type, the bottom water vertical channeling type and the edge water bottom horizontal type.