【摘要】 三角洲内不同亚相砂体均具备成藏的可能,但其成藏控制因素视沉积相带的不同而各有差异,因此在油气勘探中准确判识三角洲沉积亚相至关重要。本文探讨了在常规地震属性应用效果不理想的情况下,通过总结工区不同相带的砂泥岩速度及岩、电特征,建立不同相带的地震识别模式,在合理的时窗范围内进行地震属性优化,优选出分频、波形及弧长等三种重要属性,对三角洲亚相进行判识。结果表明此法的实际应用效果显著。更多还原

【Abstract】 It is possible to form reservoir for sandy body with different parfacies of delta, but the reservoir-forming control factor is difference because of different sedimentary facies zones, so it is very important to accurately identify sedimentary parfacies of delta in oil/gas exploration. The paper explored creating seismic mode identifying different facies belts by summarizing velocity and lithologic and electric feature of sand and mud stone in different facies belt of the work zone in a condition that the application effect of conventional seismic attributes is not ideal, carrying out optimization of seismic attributes in a reasonable time-window range, and optimizing the attributes of frequency-division, waveform and arc length to identify delta parfacies, which showed the method having evident effect in practical application.更多还原