大庆油田高密度三维地震勘探试验效果及应用潜力

TEST RESULTS AND APPLICATION POTENTIAL FOR HIGH-DENSITY 3D SEISMIC EXPLORATION IN DAQING OILFIELD

随着地震勘探装备能力不断增强,以高空间采样率为特征的高密度地震勘探技术取得了重大进展.大庆油田在主力油区开展了高密度三维地震勘探试验,首次进行了超万道、全数字、单点、高密度三维地震数据勘探研究工作.试验表明：高密度资料能够更清晰地记录地震信号的波场特征,面波形态完整,空间假频少,有效信号频带较宽;高密度资料对小断层、薄砂体的精细刻画能力更强,展现了良好的应用前景。

With the accelerating enhancement of the seismic exploration equipment performances,High-density seismic exploring technique characterized by high spatial sampling ratio has advanced greatly.In the 3D High-density seismic exploration tests of Daqing main oil provinces,the initial surveys such as super-ten-thousand trace,whole digital,single-short,high-density seismic exploration studies are performed.The tests show that the high-density data can clearly record the wave field characteristics of the seismic signals,the surface wave shapes are pretty complete,there is fewer spatial alias,the frequency width of the effective signal is greatly wide ; the fine describing capacities for the small faults and thin sandbodies are more stronger,therefore the applied prospect is shown much better.