塔河油田缝洞型储集层油水层测井识别技术

塔河油田奥陶系储集层非均质性非常严重,裂缝、孔洞发育,油、水关系复杂,没有统一的油水界面。依据测井评价与试油资料,在统计了大量油、水层段测井参数的基础上,建立了电阻率—孔隙度交会图、自然伽马—电阻率交会图,并用纵横波比值法、正态分布法、综合流体性质判别技术等识别方法,进而建立了定量计算油、水层的识别指标。在塔河油田进行应用,识别油、水层的符合程度达到了75％以上,为塔河油田奥陶系油、水层识别、完井方案的制定,储量参数的确定提供了依据。

Logging Identification Technique of Oil and Water Layers in Fractured-Vuggy Reservoir in Tahe Oilfield

The Ordovician reservoir in Tahe oilfield is characterized by strong heterogeneity,developed fractures and vugs,complicated oil-water relation,no uniform oil-water interface.Based on the logging evaluation and formation testing data,as well as statistical log response characteristics from lots of oil and water intervals,this paper presents the crossplots of resistivity-porosity and gamma ray-resistivity,P-S wave ratio approach,normal distribution approach and comprehensive discrimination approach to fluid p...