东营凹陷现河南坡东营组底部小型下切河谷地震地貌学特征及石油地质意义  

Seismic geomorphological characteristics and petroleum geological significance of small incised valley at the bottom of Dongying Formation in Xianhe south slope of Dongying Depression

作　　者：焦红岩 JIAO Hongyan(Xianhe Oil Production Plant of Shengli Oilfield Branch Company,SINOPEC,Shandong Dongying 257237,China)

机构地区：[1]中石化胜利油田分公司现河采油厂,山东东营257237

出　　处：《非常规油气》2023年第5期18-23,29,共7页Unconventional Oil & Gas

基　　金：国家科技重大专项“复杂油气藏精细表征及剩余油分布预测”(2011ZX05009-003)。

摘　　要：以东营凹陷现河油区南坡为例,采用地震地貌学研究东营组底部小型下切河谷形态和分布特征。研究发现:对地震数据体进行小波域信号重构的基础上采用地震相干中的同相轴的检测技术可以进一步提高目标相干切片的信噪比,其刻画的断层平面形态更加明显;在不整合面之上、东营组底部小型下切河谷形态特征明显,呈南东—北西向延伸,其对应的地震同相轴具有明显的下凹特征;在南坡中部可识别出3~4个小型下切河谷,经剖面测量及时深转换后预测河谷宽度为380~800 m,河谷深为8~28 m。Taking the south slope of Xianhe oil area in Dongying Depression as an example,the morphology and distribution characteristics of small incised valley at the bottom of Dongying Formation are studied by seismic geomorphology.The results show that:on the basis of wavelet domain signal reconstruction of seismic data volume,the detection technology of phase axis in seismic coherence can further improve the signal-to-noise ratio of target coherent slice,and the fault plane shape described by it is more obvious;On the unconformity surface and at the bottom of Dongying Formation,the small incised valley has obvious morphological characteristics,extending from southeast to northwest,and its corresponding seismic event axis has obvious depression characteristics;3~4 small incised valleys can be identified in the middle of the south slope,and the valley width can be predicted after profile survey and deep conversion 380~800 m,the valley deep is 8~28 m.

关 键 词：下切河谷 东营组底部 地震地貌学 分布特征 

分 类 号：P624[天文地球—地质矿产勘探]