地震资料处理解释一体化技术在塔北碳酸盐岩储层识别中的应用

Carbonate reservoir identification in Tabei Area,Tarim Basin with integrated seismic data processing and interpretation

塔北哈拉哈塘油田是塔里木油田最大的碳酸盐岩油田,也是原油增储上产的主力区块。针对该区块碳酸盐岩埋藏深、非均质性强,火成岩分布范围广、速度变化快,目的层成像精度低的特点,基于GeoEast系统,以"保真、保幅、保低频"为处理原则,围绕"改善成像精度、提高分辨率",以井震结合的形式开展火成岩振幅透射补偿、高精度速度建模关键技术攻关及碳酸盐岩储层高精度成像研究,提高碳酸盐岩储层成像精度;以"断裂为中心、属性定边界"为解释原则,开展构造解释与储层预测研究,落实碳酸盐岩断裂、储层展布,精细刻画缝洞体,提高钻井成功率。

The Halahatang Oilfield in Tabei is the largest carbonate oil field discovered in Tarim,and now becomes the most important oil producing block in the area.Carbonate rocks in this block are characterized by deep burial,strong heterogeneity,rapid velocity change,and low imaging accuracy.With processing tools provided by GeoEast System,some measures such as fidelity,amplitude preservation,and low-frequency protection are adopted.The joint use of well logging and seismic data improves data resolution and imaging accuracy.With interpretation tools provided by GeoEast System,the structure interpretation and reservoir prediction are carried out.Fracture-caves,carbonate reservoirs,and their distribution are finely depicted,and the drilling success rate is enhanced.