【摘要】 为了提取裂缝性储层在不同地震剖面上的地震响应特征,利用相干分析方法得到了裂缝性储层发育区的裂缝识别标志。首先用模型正演方法设计符合研究区地质实际的裂缝性储层地质模型,以此建立研究区主频条件下的地震模型,总结裂缝发育区常规剖面上的地震响应特征;而后对地震模型进行相干性分析,得到了相干剖面上裂缝发育区的识别标志,对比发现相干分析的识别标志和常规剖面的地震响应特征是相吻合的,而且特征更明显、响应更清晰;最后通过钻井证实该区域裂缝发育带的存在,有效证明了相干分析方法在识别、预测裂缝发育带上是可靠的、科学的。更多还原

【Abstract】 Coherent analysis method is adopted to obtain fracture identification marks in fractured reservoir development areas in order to obtain seismic response characteristics of fractured reservoirs on different seismic profiles. Adopted is the forward modeling firstly in this method to design the geological model of the fractured reservoirs consistent with actual conditions in the researched area, establish the seismic model under main frequency conditions in the area accordingly and summarize seismic response characteristics of fracture development areas on the conventional profiles. Conducted is coherent analysis on the seismic model and obtained are fracture identification marks in fracture development areas on relative profiles and it is found through comparison that the identification marks resulting from coherent analysis is consistent with the seismic response characteristics on the conventional profiles and the characteristics are more obvious and the response is more clear. Finally, it is confirmed through drilling that fracture development zones are real in the areas, which shows that the coherence analysis is an effective, reliable and scientific method for identifying and predicting fracture development zones.更多还原