“气云区”转换波地震资料应用研究与实践——以渤海湾盆地为例  

Application research and practice of converted wave seismic data in"gas cloud zone":a case study of Bohai Bay Basin

作　　者：李春雷[1] 周秘 焦叙明[1] LI Chunlei;ZHOU Mi;JIAO Xuming(Geophysical Exploration Research Institute of Geophysical Exploration Division,China Oilfield Services Co.,Ltd.,Tanggu 300450,Tianjin,China)

机构地区：[1]中海油田服务股份有限公司物探事业部物探研究院,天津塘沽300450

出　　处：《石油地质与工程》2025年第1期34-38,46,共6页Petroleum Geology and Engineering

摘　　要：“气云”现象在渤海湾油田的地震资料上比较常见,地震纵波穿越“气云区”时会发生散射效应,导致地震资料成像模糊,出现弱振幅、杂乱反射等现象,给“气云区”构造解释和储层预测工作带来困难。由于横波只在岩石骨架中传播,不受流体的影响,因此转换波地震资料可以有效改善“气云区”成像模糊的问题。选取渤海湾盆地内某油田的“气云区”为研究目标,通过转换波井震标定、转换波地震资料解释、转换波时深转换等技术研究和应用,充分利用转换波在“气云区”成像上的优势,发掘其在“气云区”构造落实上的应用潜力,对“气云区”进行地质构造研究。应用结果表明,转换波可较好落实“气云区”构造,提高钻探成功率,从而为“气云区”油气勘探和开发工作提供技术支撑。The phenomenon of"gas cloud"is quite common in seismic data of Bohai Bay.When seismic longitudinal waves pass through gas cloud zones,scattering effects occur,leading to blurry imaging of seismic data,weak amplitude,chaotic reflections,and other phenomena,which pose difficulties for structural interpretation and reservoir prediction in gas cloud zones.Due to the fact that shear waves only propagate within the rock skeleton and are not affected by fluids,converted wave seismic data can effectively improve the problem of blurry imaging in gas cloud zones.This article selects the gas cloud zone of a certain oilfield in the Bohai Bay Basin,and conducts a series of research work using converted wave seismic data.Through the research and application of converted wave well seismic calibration,converted wave seismic data interpretation,converted wave time depth conversion and other technologies,the geological structure of the gas cloud zone is studied using converted waves,fully exploring the application potential of converted wave seismic data.The application results show that converted waves can effectively implement the"gas cloud zone"structure,improve the success rate of drilling,and provide technical support for oil and gas exploration and development in gas cloud zones.

关 键 词：多波地震勘探 转换波勘探 气云区 多波联合解释 转换波资料解释 

分 类 号：P631[天文地球—地质矿产勘探]