埕南断裂带砂砾岩体的地震识别与描述

受断层长期继承性活动的影响,断裂带部分地区发育了砂砾岩体,这些砂砾岩体为多期扇体的叠置,每期扇体都是有利的油气储集体。受地震资料分辨率等因素的影响,单期扇体的描述很困难。埕南断裂带砂砾岩扇体的勘探研究与实践表明,利用测井、VSP等资料进行精细速度分析,建立砂砾岩体地震反射模式,对地震剖面进行频率—时间谱扫描是解剖砂砾岩体内部结构并划分其沉积旋回的有效方法。

Seismic identification and description for the glutenite bodies of Chengnan fault zone

The glutenite bodies developed in some areas of the Chengnan fault zone were results of long term succesive faultcontinue activities. These glutenite bodies are superimposition of multi-stage fan bodies, and each of which is a favor-able Petroleum reservoir. It is very difficult to describe a single fan body because of factors such as seismic data resolu-tion etc. The result of the exploration performed in glutenite bodies of Chengnan showed the methods, such as the finevelocity analysis with log and VSP data, constructing the glutenite bodies refflection mode, time-frequecy tracing tothe seismic section, are very effective on recognising the inter structures of the glutenite bodies and calibrating the sed-imentary cycles.