基于地震速度构建的低频响应在波阻抗反演中的应用

The application of low-frequency response model based on seismic velocity to acoustic impedance inversion

张大海

Zhang Dahai

中国石油化工股份有限公司上海海洋油气分公司研究院, 上海 200120

Institute of SINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120

以V工区北部为例,应用井数据、速度数据和地震属性共同恢复低频响应数据,同时使用层速度、层位信息(层的深度和厚度)以及反射振幅的信息进行反演,结果显示可以改善预测纵波阻抗的结果,同时与通常情况下的孔隙度预测作了对比,结果表明孔隙度预测的可信度得到了一定程度的改善。

Low-frequency response model based on well data, velocity data and seismic attributes was applied to acoustic impedance inversion. For the northern part of area V, inversion was done using interval velocity, horizon information and reflection amplitude information, and the results showed P-impedance prediction and porosity prediction were both improved.

https://doi.org/10.3969/j.issn.1008-2336.2010.03.015