塔里木盆地吉拉克地区东河砂岩尖灭线地震预测技术与应用

发布时间：2018-05-31 05:23

本文选题：东河砂岩 + 尖灭线　；参考：《石油地球物理勘探》2017年01期

【摘要】：针对塔里木盆地吉拉克地区石炭系东河砂岩尖灭线预测不准的难题,建立了东河砂岩尖灭线地震预测技术流程。该技术流程主要包括4个部分:1利用"残余厚度法"进行古地貌恢复,初步确定超覆尖灭线的宏观分布;2利用全波场地震正演技术明确东河砂岩的地震反射特征;3通过对地震正演记录进行地震属性分析、频谱分解,构建薄层检测因子、峰值振幅频率比,进行尖灭线分布的地震预测;4寻找研究区内东河砂岩与下伏地层夹角、地震预测尖灭线与实际地层尖灭线误差两者之间的定量关系式,进行尖灭线定量外推,最终得到实际的东河砂岩尖灭线。该技术在吉拉克地区东河砂岩超覆尖灭线预测中取得了良好的应用效果。
[Abstract]:Aiming at the difficult problem of inaccurate prediction of Donghe sandstone pindout line of Carboniferous in Gerac area of Tarim Basin, the technical process of seismic prediction of Donghe sandstone pindout line is established. The technical process mainly includes four parts: 1. Using the "residual thickness method" to restore the paleogeomorphology. Preliminary determination of the macroscopic Distribution of the Over-overlying Diandiao Line ~ (2) the seismic reflection characteristics of Donghe sandstone are determined by using the full wave field seismic forward modeling technique. Through seismic attribute analysis and spectral decomposition of the seismic forward modeling records, the thin layer detection factors are constructed. The peak amplitude-frequency ratio, the angle between Donghe sandstone and underlying strata, and the quantitative relationship between the error between the prediction of the pinnacle and the actual formation, and the quantitative extrapolation of the tip-out line are carried out. Finally, the actual Donghe sandstone tip-out line is obtained. This technique has been applied to the prediction of the overlying pinnacle line of Donghe sandstone in Gerac area.
【作者单位】：中国石油勘探开发研究院;中国地质大学(北京)能源学院;中国石油塔里木油田公司;
【基金】：国家油气重大专项“岩性地层油气藏成藏规律、关键技术及目标评价”(2011ZX05001) 中国石油天然气股份有限公司重大科技专项“岩性地层油气藏成藏规律研究与关键技术攻关”(2014B-0307)联合资助
【分类号】：P618.13;P631.4

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