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近年特殊的地震处理技术和油气储层预测技术不断地发展和应用,90°相位转换和波形分类技术就是其中之一。90°相位转换的目的是将地震反射的主要同相轴与地质上的薄砂层中心对应,使地震相位具有岩性地层的意义;与传统地震相划分相比,波形分类最大优点是在没有更多井资料的情况下,充分利用丰富的地震信息,快速确定目的区域的异常特征后结合各种地质成果进行更细致的研究。应用该技术对贝西北地区的河道和砂体展布进行预测,在结合典型井和地震响应特征的基础上,准确的刻画了河道的平面分布形态,实现将地震相图转换成储层沉积微相图,为今后的布井提供了可靠的依据。
In recent years, special seismic processing technology and oil and gas reservoir prediction technology continues to develop and application of 90 ° phase shift and waveform classification technology is one of them. The purpose of 90 ° phase conversion is to match the major seismic reflection phase with the center of the thin sand layer in geology so that the seismic phase has the significance of lithologic stratigraphy. Compared with the traditional seismic facies division, the biggest advantage of waveform classification is that no In the case of multi-well data, abundant earthquake information is fully utilized to quickly determine the anomalous characteristics of the target area and then conduct a more detailed study with various geological results. This technique is used to predict the distribution of river channels and sand bodies in the northwestern Beibei region. Based on the characteristics of the typical wells and the seismic response, the plane shape distribution of the river channels is accurately described, and the seismic phase diagram is converted into reservoir sedimentary micro Phase diagram provides a reliable basis for the future well.