CAJ | 학술논문

在地震波阻抗成像和岩石物理解释中，低频信息是非常重要的。缺失低频会导致地震波频带变窄，时间域分辨率降低，最终会使波阻抗成像错误或造成虚假成像，这将会造成储层预测和岩石物理解释不正确。针对同一工区的两块资料ZJNew和ZJOld进行了波阻抗反演，含较多低频成分的ZJNew资料的反演结果分辨率较高。通过楔形模型反演结果的比较可知，低频缺失会导致在储层位置出现虚假薄夹层，造成储层预测解释错误。
재지진파조항성상화암석물리해석중，저빈신식시비상중요적。결실저빈회도치지진파빈대변착，시간역분변솔강저，최종회사파조항성상착오혹조성허가성상，저장회조성저층예측화암석물리해석불정학。침대동일공구적량괴자료ZJNew화ZJOld진행료파조항반연，함교다저빈성분적ZJNew자료적반연결과분변솔교고。통과설형모형반연결과적비교가지，저빈결실회도치재저층위치출현허가박협층，조성저층예측해석착오。
Low frequencies in seismic data are necessary for proper acoustic impedance imaging and petrophysical interpre-tation .Lack of lower frequencies will make frequency band of seismic narrow,decrease the time domain resolution,eventually lead to the wave impedance false imaging or sham imaging.That will lead to incorrect reservoir interpretation and petrophysical predictions.We have inverted acoustic impedance volume using two pieces of seismic data,the ZJNew and ZJOld ,at the same project .The ZJNew which contains lower frequencies yields a higher resolution image of inverted acoustic impedance volume . Comparing and analyzing the inversion results of wedge model ,it indicates that lack of lower frequencies lead to false high a-coustic impedance layer appearing in thick reservoir of wedge and cause the reservoir prediction interpretation incorrecttly .