井间地震地质分辨能力浅析  

Preliminary a-nalysis on cross-well seismic geologic resolving a-bility

作　　者：时应敏[1] 乔玉雷[1] 王慧[1] 

机构地区：[1]胜利油田有限公司物探研究院

出　　处：《油气地质与采收率》2005年第5期33-35,共3页Petroleum Geology and Recovery Efficiency

摘　　要：井间地震无低速带干扰,具有高信噪比、高采样率等特点,能够识别单砂体、韵律层和层内夹层,在沉积微相划分、微构造研究、低序级断层识别、储层精细描述等方面具有明显的优势。文章从频谱特征、反射系数、分层能力等方面讨论了井间地震的地质分辨能力,希望为井间地震的进一步应用提供一个借鉴尺度。研究认为井间地震能够表征地层横向的变化,其垂向分辨能力可以达到1-5m,是描述剩余油“总体分散、局部集中”分布的重要技术手段。The cross-well seismic survey has no disturbance from low velocity belt,with high S/N and high sampling rate.A single sandbody,rhythmic layer and interbed can be differentiated with it.It has the obvious advanta-ges on sedimentary microfacies classification,micro-structure research,fault identification in low order and fine reservoir description,etc.In this paper the geologic resolving ability of cross-well seismic survey was dis-cussed on frequency spectrum characteristics,reflection coefficient and the vertical resolution etc.It hopes to provide a reference scale for the further application of cross-well seismic survey.The cross-well seismic survey can characterized lateral stratigraphic variation, and its vertical resolving ability may be up to 1-5m. It is the key technical tool for describing the'decentral-ized in the whole and unified in the part'distribution of remaining oil.

关 键 词：井间地震 频率 分辨率 分辨能力 韵律层 岩性 

分 类 号：P631.4[天文地球—地质矿产勘探]