埕南断裂带砂砾岩体的地震识别与描述

Seismic identification and description for glutenite of Chengnan faulted zone.

埕南断裂带发育了多期相互叠置的砂砾岩体,具有很大的勘探开发难度。对埕南断裂带的多期砂砾岩体的沉积分布特征及成藏特点进行了分析。受地震资料分辨率等因素的影响,利用测井、垂直地震剖面法对砂砾岩体的地震反射模式进行了分析;对地震剖面进行频率-时间谱扫描和水平频率-时间谱扫描,详细解剖了砂砾岩体内部结构并划分其沉积旋回;结合测井约束庆演,对砂砾岩体进行了预测,提出了勘探开发方案,与实钻结果吻合。

Some parts of Chengnan faulted zone have developed multistage contraposed glutenite at S3 with difficulty for exploration and development. Sedimentary distribution and reservoiring character of multistage glutenite are analysed. Using log and VSP a seismic reflection mode for glutenite is analysed. The sseismic profile is scanned by frequency-time spectrum and horizontal frequency-time spectrum. Inner structure of glutenite is dissected and divided sedimentary cycle in details. Combining with log constraint inversion glutenite body is predicted and a plan of exploration and development is provided, and the result is fit with the drilling.