利用基于测井数据的弹性阻抗判别储层流体性质

FLUID CHARACTER IDENTIFICATION IN RESERVOIR FIELD USING THE ELASTIC IMPEDANCE BASING ON LOGGING DATA

弹性阻抗可以有效地识别储层岩性和流体。利用四川盆地二口测试井的实测纵波、横波数据资料,依据Connoly弹性阻抗理论,对储层的流体性质进行了判别,并将试气成果进行验证。经研究表明:利用弹性阻抗能有效地判别储层的流体性质。因此,在四川地区开展地震叠前弹性阻抗反演进行储层预测和流体识别是可行且有效的。

The previous studies show that it is effective to identify the reservoir lithology and fluid using elastic impedance.The elastic impedance was calculated by using the P-wave and S-wave in two wells according to the Connoly elastic impedance theory in this paper.We identified the fluid types based on the result in reservoir field,and estimated the calculated results for gas field.The results showed that it is effective to distinguish the fluid using elastic impedance in Sichuan basin.We,therefore,concluded that it is useful and effective for reservoir prediction and fluid identification using seismic prestack elastic impedance inversion in Sichuan basin.