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在油气勘探开发中,储层流体性质对后续射孔开发显得尤其重要,当储层含有气时,才具有经济价值,因此需要对储层进行流体识别,进而分析气水分布特征,对后续储层综合评价提供依据。本文综合利用试油资料,岩心资料和测井资料,采用深浅双侧向比值与深电阻率交会图、孔隙度~含水饱和度交会图法对该地区进行流体识别,通过实际应用证明,上述方法共同应用于本区进行气层、水层、干层的识别是有效的,对比试气结果可知,其回判的正确率达到91%。在此基础上对川中GM地区震旦系灯影组储层气水分布特征进行探讨,也证实了研究区属于具有统一气水界面,属于底水气藏。
In the process of oil and gas exploration and development, reservoir fluid properties are particularly important for subsequent perforation development. When the reservoir contains gas, it is of economic value. Therefore, fluid identification of the reservoir is needed to analyze the gas and water distribution characteristics. Layers provide a basis for comprehensive evaluation. In this paper, the fluid identification of the area is made by using the cross-plot of deep and shallow double lateral ratio and deep resistivity and the cross-plot of porosity and water saturation by comprehensively using the oil test data, core data and well logging data. Through the practical application, Commonly used in this area for gas, water, dry layer identification is effective, compared to the test gas results, the correct rate of its return to 91%. On this basis, the gas and water distribution characteristics of the Sinian Dengying Formation reservoir in the central Sichuan Basin are also discussed. It is also confirmed that the study area belongs to a single gas-water interface and belongs to the bottom-water gas reservoir.