【摘要】 将地震剖面与钻井资料结合起来 ,根据钻井取得的地层厚度、时代、岩性、密度、孔隙度等信息 ,对剖面上任意点进行回剥分析 ,并运用均衡原理绘出沉降曲线 ,从而给出沉积史和构造史 .模拟研究四川盆地埋藏沉降史表明 ,四川盆地构造沉降与总沉降之差随地层地质年龄的减少而减少 ,说明地层越新压实量越小 .不同时期的沉降速率有所不同 ,总趋势为早期沉降速率大 ,随着时间的推移 ,沉降速率逐渐减小 .更多还原

【Abstract】 Based on the stratigraphic thickness, ages, lithosphere, porosity and seismic sections, the sedimentary and subsidence history can be obtained from subsidence curves by using backstripping analysis. The study indicates that the difference between the total subsidence and the tectonic subsidence in Sichuan basin decreases with the decreasing geological time, implying the small amount of compaction when the stratum is young. The subsidence rate is different in the various periods. The subsidence rate is large during the old time and become small as the time is running.更多还原