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该文根据AD 12缝洞带奥陶系碳酸盐岩缝洞型储集层地质特征以及生产特征,分析了AD 12缝洞带出水类型以及出水原因。通过见水时间与产层海拔深度关系,判断出产层出水特征基本符合由构造低部位到高部位侵入。同时认为该研究区总体油气充注程度较低,井与井之间的连通性较差,局部出现底水较发育以及油水分布倒置状况。通过以上认识,最终建立了缝洞带储层油水体组合模式,这对描述碳酸盐岩缝洞型储集体内流体分布以及指导其开发具有重要意义。
Based on the geological characteristics and production characteristics of the Ordovician carbonate fractured-cave reservoirs in the AD 12 fractured cave, the paper analyzes the type of effluent from the AD 12 fractured tunnel and the cause of the effluent. Through the relationship between the water depth and the elevation of the pay zone, it is concluded that the effluent characteristics of the pay zone are basically in accordance with the invasion from the low part to the high part of the structure. At the same time, it is considered that the overall filling degree of oil and gas in the study area is relatively low, connectivity between well and well is poor, partial development of bottom water and inversion of oil-water distribution occur locally. Based on the above understanding, the ultimate combination of oil and water fractures in fractured-cave reservoirs is established, which is of great significance for describing the fluid distribution and guiding the development of fractures in carbonate fractured-cave reservoirs.