以地震反演资料为基础的相控储层建模方法在BZ25-1油田的应用

APPLICATION OF A FACIES-CONTROLLED RESERVOIR MODELING METHOD BASED ON SEISMIC INVERSION DATA IN BZ25-1 OILFIELD

与陆上油田相比,海上油田钻井资料相对较少,但三维地震资料品质相对较好,而地震反演数据体可以反映储层砂体的岩相分布与物性分布.因此,在BZ25-1油田的开发方案研究中,尝试了一种以地震反演资料为基础的相控储层建模方法.结果表明,成功应用这种储层建模方法,不仅可以避免常规建模方法中经常存在的物性分布与岩相分布不匹配的"两层皮"现象,获得与地质认识相一致的结论,而且可以大大提高油藏数值模拟的精度与效率,为油田开发方案设计提供科学依据.

For offshore oilfields, little drilling data is available, but 3D seismic data is usually better in quality. Since seismic inversion data can be used to represent lithofacies and petrophysics of reservoir sandbody, a facies_controlled reservoir modeling method based on seismic inversion data is tried in the research on overall development plan (ODP) of BZ25?1 oilfield. The results have indicated that this modeling method can not only avoid the unmatchable petrophysical distribution and lithofacies distribution commonly caused by the conventional modeling methods, resulting in a uniform conclusion with the geological considerations, but also greatly improve the efficiency and accuracy of numerical reservoir simulation, providing scientific bases for the ODP design.