【摘要】 四川盆地东北部罗家寨地区为高山、高陡复杂构造和含油气各向异性的地质体相对集中区,对其精细解剖迫在眉梢,二维勘探和窄方位角三维勘探已不适应。经过多年攻关研究,在深入分析大山区全三维勘探的特点和难点后,提出了采用中间激发8×5次覆盖、线距400m、最小炮检距为565.7m,最大炮检距为4216m的全三维观测系统;三维浮动基准面处理、层析静校正、偏移速度场的串级构建等全三维处理技术;波动方程正演、多井约束反演、地震属性叠后裂缝检测等全三维储层预测技术。形成了一套山地全三维采集、处理、解释和储层预测技术,已在川东北部罗家寨地区取得很好的应用效果。更多还原

【Abstract】 The Luojiazhai area in northeast Sichuan Basin is dominated by the geologic bodies with high mountains, high-steep complex structures and anisotropic geologic medium, where 2D and 3D narrow azimuth prospecting would not meet the seismic requirements, the fine interpretation is needed urgently. Through research for years,and the analysis of the characteristic and difficulty of wide azimuth 3D prospecting in high mountains, a set of seismic technique, i. e, mountainous wide azimuth 3D acquirement technique, with observing system of mid-point shot, 8×5 folds, line distance 400 m, mini shot-receiver distance 565. 7 m, max shot-receiver distance 4216 m , wide azimuth 3D processing technique with 3D floating datum plane, tomography static rectification, series migration in the velocity field, 3D interpreting technique based on wave equation forward, multi-well restrict backward, post-stack fissure detection for seismic attribute and wide azimuth 3D reservoir predication technique, has been integrated and applied with the satisfied results obtained in Luojiazhai area in northeast Sichuan.更多还原