官1地区高分辨率地震采集技术及应用

The high-resolution seismic acquisition and applications in Guan 1 area.

(1.中国石化胜利油田物探公司，山东东营257100；2.中国科学院海洋研究所，山东青岛266071；3.中国石化江汉油田勘探开发研究院，湖北潜江433100)

Geophysical Exploration and Development Company of Shengli Oilfield, Dongying 257100, China

胜利油田官1地区油气资源丰富，但由于该区的地下地质情况复杂，使得老资料分辨率低，不能满足精细解释的需要。为此，根据该区的地质任务和勘探技术难点，进行了高分辨率地震采集技术研究。采用了有针对性的方法和技术：①用小面元来提高地震资料的横向分辨率；②用高覆盖次数及目标设计方法来提高目标区地震资料的信噪比；③用优化观测系统来提高干扰波的压制效果；④用延迟叠加震源来提高有效波的下传能量；⑤用多种方法联合调查表层地质结构，并量化分析不同激发井深和药量的频谱、能量和信噪比，以此来确定不同激发点的最佳激发井深和药量。高分辨率采集技术在官1地区取得了良好的应用效果，新采集的资料较之老资料在分辨率和信噪比上都有明显的提高，利用新资料解释的构造图上构造形态和断层系统更加精确清楚，根据新资料部署的王古1井获得了高产工业油气流。

There exists exploration potential is Guan 1 area, but the developed faults and fault-blocks, and the poor resolution old data holdback further prospecting and developing. According to the geological task and technique difficulty, small bin is used to improve seismic data resolution. In the main structure, we adopt high folds and target design to improve signal to noise ratio. Optimized layout according to the effect of suppressing interference wave and use seismic delaying stack source to increase up-down energy, quantifying shot-well depth through researching and interpreting to guarantee seismic data quality. The new seismic data resolution and signal to noise ratio are higher than the old ones and satisfy fine interpretation demands.