约束稀疏脉冲波阻抗正反演参数研究

约束稀疏脉冲反演技术作为一项成熟的技术已经在石油和天然气勘探领域得到广泛应用,且在后期的深度域地质统计学反演中,约束稀疏脉冲反演得到的波阻抗数据体也起到关键作用。从正演出发,首先设计典型的透镜体地质模型,然后根据自激自收原理正演地震数据。再进入反演环节,通过分析不同反演参数的作用和影响,得出各参数的最佳范围,设置合理的参数反演出原始的透镜体地质模型。最后对改善波阻抗反演的效果提出新的设想。

RESEARCH ON IMPEDANCE FORWARD AND INVERSION PARAMETERS OF CONSTRAINED SPARSE SPIKE METHOD

The method of constrained sparse spike inversion has been widely used in oil and gas exploration as a matured technology,and the result of constrained sparse spikeinversion also plays a key role in depth domain of Geostatistical Inversion. In this paper, we firstly designed a typical lenslike geological model, and then, make forward processing based on the principle of self-exciting and self-receiving. In the processing of inversion, the authors obtained the optimum range of each parameter by analyzing the impact of different inversion parameters, then inversed the original lenslike geological model by setting reasonable parameters. Finally, the authors proposed some new ideas to improve the effect of P-impedance inversion.