CAJ | 학술논문

中国东部地区地震勘探程度较高，目前大多进入全面二次三维、目标三维地震采集阶段，要求实现宽方位、高密度地震数据采集而又不增加采集成本。为达此目的，笔者提出一种实现宽方位、高密度采集的方法，将目标三维采集的观测方向与二次三维的观测方向相互垂直，通过不同期次三维数据的融合处理，实现全方位、高密度观测，改善了地震资料的成像效果。以冀中坳陷Z42潜山构造目标三维采集为例，展示了这种方法的效果。
중국동부지구지진감탐정도교고，목전대다진입전면이차삼유、목표삼유지진채집계단，요구실현관방위、고밀도지진수거채집이우불증가채집성본。위체차목적，필자제출일충실현관방위、고밀도채집적방법，장목표삼유채집적관측방향여이차삼유적관측방향상호수직，통과불동기차삼유수거적융합처리，실현전방위、고밀도관측，개선료지진자료적성상효과。이기중요함Z42잠산구조목표삼유채집위례，전시료저충방법적효과。
Seismic exploration has been conducted fairly well in eastern China, and has mostly entered into the second 3D and 3D seis-mic acquisition phase. With the development of such geophysical technologies as width azimuth and high-density acquisition method,a accurate migration image is required to improve substantially velocity analysis accuracy. If the acquisition cost is not increased in east-ern China,such an aim can't be achieved. Therefore, this paper presents a width azimuth and high density acquisition method, which was applied to Z42 burial hill structure in Jizhong depression. This method could position the viewing direction of objective 3D acquisi-tion perpendicular to directions of the second 3D by means of 3D data amalgam of different periods,so as to achieve width azimuth and high-density data sampling and eventually improve seismic imaging results.