CAJ | 학술논문

针对目前合成地震记录质量不高导致层位标定解释、构遣解释、储层反演精度低的问题,基于模型正演研究认为合成地震记录质量不高的原因主要是地震子波主频与实际地震子波主频不一致造成的;研究据此提出了基于模型建立地震子波主频与实际地震记录主频两者的差异之间的关系,在实际的应用过程中根据已建立的差异关系和实际地震记录主频可以获得比较准确的地震子波主频,利用这样的主频子波进行合成可获得较好的合成地震记录质量.
침대목전합성지진기록질량불고도치층위표정해석、구견해석、저층반연정도저적문제,기우모형정연연구인위합성지진기록질량불고적원인주요시지진자파주빈여실제지진자파주빈불일치조성적;연구거차제출료기우모형건입지진자파주빈여실제지진기록주빈량자적차이지간적관계,재실제적응용과정중근거이건립적차이관계화실제지진기록주빈가이획득비교준학적지진자파주빈,이용저양적주빈자파진행합성가획득교호적합성지진기록질량.
In consideration of the problem of lower precision of horizon calibration and interpretation, structural interpretation, reservoir inversion .according to the forward modeling theory, the major reason resulted from the difference between the seismic wavelet dominant frequency and practical seismic wavelet dominant frequency, was the lower quality of synthetic seismogram. However, based on the modeling theory, the dominant frequency of seismic wavelet and practical dominant frequency of seismic wavelet and their difference of relationships were all induced by the disagreement. Furthermore, the dominant frequency of accurate seismic wavelet would be obtained because of the difference of relationships, thus the synthetic seismogram of higher quality is achieved with this kind of dominant frequency wavelets.