基于声波、弹性波波动方程在地震勘探中的正演对比研究

Comparative Study on Forward Modeling of Seismic Exploration Based on Acoustic Wave and Elastic Wave Equation

当下,油气勘探的研究主要转型为复杂隐蔽型油藏,因此高精度、高保真度地震勘探技术的研究在实际生产中尤为重要。本研究基于声波、弹性波多尺度参数的表征差异,利用tesseral pro地震正演模拟软件建立含有油气、水及油气水混合的起伏地层模型,对地震观测系统参数的选取论证以及对两种地震波的正演模拟效果进行对比。研究表明:基于多尺度参数的弹性波波动方程在正演研究中的反射波效果要优于声波波动方程。弹性波波动方程相较于声波波动方程在实际地震勘探正演研究中能提供更加丰富的理论依据。

At present,the research of oil and gas exploration is mainly transformed into complex and hidden reservoirs,so the research of high-precision and high-fidelity seismic exploration technology is particularly important in the actual production. Based on the characterization difference of multi-scale parameters of acoustic wave and elastic wave,the undulating formation model containing oil and gas,water and water is established,and the selection of parameters of seismic observation system and the forward simulation effect of two seismic waves are compared. The study shows that the reflected wave equation is better than the acoustic wave equation. The elastic wave wave equation can provide a more abundant theoretical basis in the real seismic exploration forward study.