灰质地层发育区浊积岩的地震识别技术研究及应用——以dj洼陷为例

Research and Application of Seismic Identification Technology for Turbidite in Ash Formation Development Area——Using dj Depression as an Example

从灰质地层发育区浊积岩勘探难点出发,应用子波分解技术对地震数据进行分解重构,突出了砂岩储层地震反射特征,再根据重构的数据体应用多属性变换技术,预测有利储层的发育范围。同时,应用叠前反演技术获得拉梅系数弹性参数来剔除灰质影响,精细刻画砂体边界。并采用基于"双相介质"含油性的预测方法,对浊积岩含油性进行了检测,确定了有利目标,并获实钻证实。

Starting from exploration difficulties for turbidite in ash formation development area, the article gives an analysis and restructuring of seismic data by using wavelet decomposition technology, sticks out seismic reflection characteristics of sandstone reservoir, and use multi-attribute transformation technology based on restructured data body to forecast development scope of favorable reservoir. At the same times, the article applies pre-stack inversion technology to acquire Lame coefficient elastic parameter so as to eliminate the impact of ash, gives a fine characterization of sand body boundary, and makes the oiliness test of turbidite by using oiliness prediction method based on ＂ two-phase media＂, having determined favorable objective and certified by actual drilling.