多井约束InverMod反演在四川新场气田含气砂体预测中的应用

APPLICATION OF INVERMOD INVERSION TO PREDICTION OF THE GAS BEARING SANDSTONE IN XINCHANG GAS FIELD

利用Ｊａｓｏｎ公司的ＩｎｖｅｒＭｏｄ反演模块，通过一个系统的工作流程，从三维地震数据中得到最常用的岩性参数——波阻抗。展示了波阻抗在储层描述研究中比常规的地震解释和属性分析更精细、更有效，并通过在四川新场气田蓬莱镇组油气藏研究中的应用，讨论了波阻抗方法的有效性。在此基础上，对含气砂体进行预测，取得了良好的效果。

Using InverMod of Jason Geosystems BV, following a multidisciplinay workflow, the authors obtained acoustic impedance, one of the most common lithology parameters from the seismic data. The study shows that acoustic impedance is more accurate and effective than the standard seismic interpretation and attribute analysis in description of reservoir. In order to analyze the effectiveness of the acoustic impedance method, it is applied to the study of the Penglaizhen gas pools in the Xinchang gas field of Sichuan. On the basis of these, the gas bearing sandstone was predicted and good results have been obtained.