The Lithology And Reservoir Logging Identification Evaluation In Xinglongtai Buried-hill

With the continuous increase of the world demand for oil and gas resources, thecomplex lithologic oil&gas reservoirs has gradually become an important area of explorationand development. Liaohe Oilfield increase in proven reserves of important areas is the LiaoheDepression of Archean metamorphic rocks buried-hill. However, the geological problemsfaced by the Archean metamorphic rock buried-hill reservoir exploration, mainly in：1. Lithologic identification difficulty. Archean metamorphic rock buried-hill lithology isvery complex (Both metamorphic rock and late intrusive magmatic rocks and powermetamorphic rock), and lithological changes range is very large in different blocks, sousing well logging data and methods for lithologic division is very difficult.2. Fractured reservoir recognition difficulty. So those reservoirs in the loggingidentification exist great difficulties, Due to the complex and lithologic reservoir seriousheterogeneity, and confirming rate is very low in the first logging interpretation.3. Fractured reservoir parameters (including fracture porosity and reservoir saturation)calculation accuracy is low.4. The fluid types of recognition and evaluation still have no effective methods inFractured-vuggy reservoir space.In order to improve the reservoir log evaluation precision of the Archean metamorphicburied-hill and provide favorable technical support to the exploration and development, Thisarticle in view of the geological problems existed in the reservoir exploration for the Acheanmetamorphic buried-hill, developing a series of logging evaluation method research,establish and perfect used in the land of the Liaohe Oilfield land Archean metamorphicburied-hills lithology logging identification method and reservoir log evaluation method andtechnology, explore fractured reservoir recognition method of laminar to discriminate.