Abstract：The TJ area in the Northeast Sichuan Basin is rich in oil and gas resources, but the seismic and geological conditions are complex. The primary understand target has developed small fractures, making the fractured-porous reservoir very anisotropic. The near-surface interval is loose sandstone, so the seismic frequency band is narrow. The dense vegetation causes strong high-frequency noises. The matured "2W1H" seismic exploration technology (wide frequency and wide azimuth, high density) is used to design the recor-ding system to improve the image of the reservoir with small fractures and strong anisotropy. Finally, the comprehensive surface survey and shooting factor design technology is developed for loose sandstone, which can quantitatively analyze small array parameters for suppressing high-frequency noises. By expanding the effective bandwidth, the imaging effect of the seismic section is improved.
潘家智, 刘斌, 何京国, 卢湘鹏, 张在武. 川东北TJ地区宽频宽方位三维地震采集技术[J]. 石油地球物理勘探, 2020, 55(s1): 1-8.
PAN Jia-zhi, LIU Bin, HE Jingguo, LU Xiangpeng, ZHANG Zaiwu. Wide frequency and wide azimuth 3D seismic acquisition in TJ area,Northeast Sichuan Basin. Oil Geophysical Prospecting, 2020, 55(s1): 1-8.
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