摘要
针对用实测声波反演结果无法界定单砂层的顶底 ,无法进行单砂层储层预测与描述的难题 ,对史南 -郝家油田测井资料进行了分析。结果表明 :由于其储层单层厚度薄 ,常规地震方法只能描述砂层组的变化 ,在实测声波曲线上的特征不明显 ,但在自然电位曲线上的特征非常明显 ,顶底界清楚 ,而且块状化后的声波与自然电位之间存在良好的线性关系 ,提出了一种基于自然电位重构声波和实测声波两次反演联合进行储层横向预测的方法 ,进行了反演结果的分辨分析、砂体标定与砂体追踪 ,得出了砂体构造图厚度图的制作步骤和砂体物性参数的估算方法 ,为进一步勘探开发部署提供了地质依据。该方法突出了储层的特征 ,提高了反演结果的可解释性 ,解决了薄层浊积岩单砂体描述的地质难题。
In the Shinan- Haojia oil field a top and base of a single sand body can′t be located by the impedance inversion data constrained by sonic logs,and then the reservoir prediction and description of a single sand body can′t be done.However,the description and evalution of a single sand body are critical for the progressive exploration and development.Comprehensive analysis of logging data in study area showed:( 1 ) that even although reservoirshaven′tstrong characterin sonic log the reservoirscan easily beidentified by SP log;( 2 ) that there is a good relationship between blocky SP log and blocky sonic log.According to these features a new reservoir predication method isproposed by combining the impedance inversion data setsrespectively constrained by pseudo- sonic logs reconstructed from SP logs and sonic logs.And then,the resolution analysis of the impedance inversion data sets,the detailed horizon correlation between log and impedance inversion data,and the interpretation of the tops and bases of sand bodies are finished.Finally,structure maps,isopach maps and porosity distribution maps of 1 8sand bodies are completed. All the these maps are served as basis for the progressive exploration and development.This method can enhance reservoir′s character and greatly improve interpretability of impedance inversition data.therefore,the description of a single sand body in thin turbidite can be finished.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2000年第2期163-167,共5页
Journal of Northwest University（Natural Science Edition）
基金
中国石油与天然气集团公司"八五"重点攻关资助项目
关键词
薄层浊积岩
储层描述
测井约束反演
地震方法
thin layer
turbidite
SP log
sonic log
logging constrained seismic inversion
reservior description
