官1地区高分辨率地震采集技术

The application of the high-resolution seismic acquisition technique in Guan 1 region

官1地区断块发育,勘探潜力较大。老资料分辨率较低,影响了进一步勘探开发。针对工区勘探存在的技术难点,使用小面元、高采样率提高地震资料分辨率;采用小炮排距、高覆盖次数的目标设计提高资料信噪比;根据对干扰波的压制效果优选最佳观测系统;使用延迟叠加震源提高有效波的下传能量;通过多种方法联合调查、解释,量化工区不同井点的激发井深,保证资料采集质量。得到的新资料较老资料分辨率和信噪比明显提高,满足了精细解释的需要。

Guan 1 region where faultage and fault blocks developed has more exploration potential. The old seismic data which had relatively low resolution affected the further regional exploration and development. Small bins and high sample rate were used to improve the resolution for the seismic data and small shot-spread-interval and high coverage design to improv S/N for the main structures; Based on the suppression effects of the disturbing waves and optimized acquisition geometry; the delayed stack source was used to improve the downward energy of the significant wave; by taking many methods, the shooting depths of the different holes in the working area are investigated, interpreted and quantified, which can ensure the quality of the data. Compared to the old data, the qualities of new data are greatly improved and can meet the need for fine interpretation.