鄂尔多斯盆地西南缘奥陶系礁滩相地震资料处理技术  

Seismic Reflection Processing Technique of Ordovician Reef Flat Facies in the Southwestern Margin of Ordos Basin

作　　者：满红霞 周夏丽 张媛 张敏 

机构地区：[1]东方地球物理公司研究院长庆分院,西安710021

出　　处：《重庆科技学院学报（自然科学版）》2017年第4期54-58,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项"鄂尔多斯盆地大型岩性地层油气勘探开发示范工程"(2008ZX05044)

摘　　要：鄂尔多斯盆地西南缘地表条件相对复杂,黄土直测线品质较差,静校正问题突出,信噪比低,干扰波类型多样,地震勘探精度受到严重制约。针对这些问题,从综合静校正、叠前保幅去噪、地表一致性振幅处理、井控反褶积处理和叠前时间偏移处理等关键技术角度展开研究。总结地震资料处理总体思路,以保真、保幅、保低频处理为核心,加强静校正攻关,做好偏移成像处理,有效识别奥陶系礁滩相反射。对老资料重新处理,使得地震剖面品质得到有效提高,满足该地区油气勘探的基本需求。The surface condition of southwestern margin of Ordos Basin is relatively complex,such as poor quality of Loess straight line,prominent static correction problem,low signal to noise ratio and various interference wave types,so the seismic exploration accuracy is severely restricted.Therefore,the key technologies,such as comprehensive static correction,pre stack amplitude preserving denoising,surface consistent amplitude processing,well controlled deconvolution and pre stack time migration processing,are studied.The paper takes the fidelity amplitude and low frequency processing as the core,strengthening the research of static correction,the migration imaging of seismic data processing,to realize the general idea of effective identification of Ordovician reef beach facies reflection.Based on dealing with the former data,the quality of seismic profile data is improved effectively,which can meet the basic needs of oil and gas exploration in the area.

关 键 词：鄂尔多斯盆地 地震资料 信噪比 静校正 叠前保幅去噪 

分 类 号：P631[天文地球—地质矿产勘探]