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方法 以试油、岩心分析资料为依据 ,测井资料为基础 ,研究大洼地区安山岩储层特征。目的 识别安山岩储层类型 ,研究安山岩储层参数特征及裂缝分布情况。结果 本区安山岩储层可划分为三类 ,其中Ⅰ、Ⅱ类为有效储油层 ;建立了孔隙度、泥质含量、含油饱和度储层参数解释模型及有效厚度划分标准 ,用后效果较好 ;利用井周声波成像及地层倾角测井技术可有效识别安山岩裂缝发育带及其分布情况。结论 本文所建立的储层参数解释模型及有效厚度划分标准方法简单、实用 ,为本区安山岩储层进一步地质分析、储层评价、油藏描述等奠定了基础
Methods Based on test oil and core analysis data and well logging data, the characteristics of andesite reservoir in Dawa area were studied. Aim To identify the types of andesite reservoirs and investigate the parameters of andesite reservoirs and the distribution of fractures. Results The andesite reservoirs in this area can be divided into three types, of which Ⅰ and Ⅱ are effective reservoirs. The reservoir porosity parameters, porosity and shale content, oil saturation parameter interpretation model and effective thickness classification criteria are established, and the post-use effects are better Using well-circumference acoustic imaging and stratigraphic dip logging technology can effectively identify the andesite fracture zone and its distribution. Conclusion The interpretation of reservoir parameters and the standard method of effective thickness division established in this paper are simple and practical and lay the foundation for further geological analysis, reservoir evaluation and reservoir description of andesite reservoir in this area.