摘要
自1939年以来,我国开始了地球物理测井工作已有七十多年的历史。测井方法由单一的电测井,发展到现在的声、电、放(放射性)、核磁共振、声电成像测井,大幅度提高了测井解决地质及工程问题的能力。但常规测井受仪器纵向分辨率的限制,使测井曲线分辨率普遍较低,薄层段的测井响应不明显,往往不能反映薄储层的真实信息,进而影响了薄储层的正确评价。为了正确地评价和解释薄层,本文通过反褶积法和频率匹配法两种方法来提高曲线的分辨率,并分别给出了具体的算法。通过分析,经过高分辨率处理后的曲线在很多层段上横向幅度得到了提高,尤其是在层厚为0.3m的薄层段效果比较明显。
Since 1939,geophysical well logging began in our country for more than 70 years.Logging methods develop from simple electrical logging to present acoustic,electric,radioactive,nuclear magnetic resonance,acoustic and electric imaging well logging which improve well logging ability in solving geologic and engineering problems.But conventional logging is restricted by axial resolution of the tools,which makes log resolution low.Logging response of thin layers is not obvious.So it can not reflect real information about the thin layers.In order to evaluate interpret thin layers exactly,the paper presents two methods(deconvolution and frequency matching) and concrete algorithm to improve log resolution.Through analysis,the logs are improved in lateral amplitude after high resolution processing,especially for the thin layers with thickness of 0.3m.
出处
《国外测井技术》
2012年第1期17-21,3,共5页
World Well Logging Technology
关键词
薄层
反褶积法
频率匹配法
提高分辨率
thin layers
deconvolution
frequency matching
improvement of resolution
