CAJ | 학술논문

根据褶积模型,反射波振幅是单个反射系数和子波褶积的叠加,一次反射地震记录的振幅从本质上说是有限带宽的反射系数,地震剖面的同相轴表示了地层的波阻抗差界面,并不是等时的,结合地层对比的依据说明波阻抗并不能完全反映地层的岩性,仅用波阻抗预测岩性是不准确的.在此基础上,结合模型和实例说明,同相轴的尖灭并不表示储集层的尖灭.
근거습적모형,반사파진폭시단개반사계수화자파습적적첩가,일차반사지진기록적진폭종본질상설시유한대관적반사계수,지진부면적동상축표시료지층적파조항차계면,병불시등시적,결합지층대비적의거설명파조항병불능완전반영지층적암성,부용파조항예측암성시불준학적.재차기출상,결합모형화실례설명,동상축적첨멸병불표시저집층적첨멸.
Based on convolution model, the reflected wave amplitude is the superposition of single reflection coefficient and wavelet convolution. The amplitude of primary seismic reflection seismogram can be regarded as the limited bandwidth reflection coefficient in nature, while the event of seismic profile stands for the interface of wave impedance contrast of layers, which is not consistent with deposition interface. This paper illustrates wave impedance can not completely reflect the lithology of strata by combining with stratigraphic correlation, so it is inaccurate to only use the wave impedance for prediction of lithology. Also, this paper indicates from the model and cases that the pinchout of event does not express the pinchout of reservoir.