江汉水网周返地区开发三维地震采集方法

Three-dimensional Seismic Acquisition Method for Development of Zhoufan Area in Jianghan Water Network

随着经济发展,江汉水网老油区地表地震条件越来越复杂,开展后续地震勘探工作难度加大。周返三维采用适应地表环境变化能力强的"宽方位、大道数"的多震源联合施工的地震采集方法,解决了复杂工农关系地区的完成地质任务,所得地震剖面的信噪比和分辨率均得到了提高,小断层刻画清楚,有利于后续挖潜老油区滚动开发潜力、改善开发效果、新增地质储量、预测剩余油分布,提高采收率。

More complicated surface seismic conditions in old oilfield in Jianghan water network increase the difficulty in follow--up seismic exploration. In Zhoufan area, multi--seismic--resources--aided seismic acquisition method of ＂broad azimuth plus multiple channels＂ is used which is more adaptive to surface environment change. This method makes obtained signal--to--noise ratio and resolution ratio of seismic section better and description of minor faults clea- rer, contributing to follow--up rolling development of old oilfield, improving development effect, increasing geological reserves, predict ting remaining oil distribution and enhancing oil recovery.