摘要
随着全球油气藏勘探开发研究的不断深化,地质、钻井、地球物理等油气勘探技术持续进步,综合应用多种油气勘探方法已成为必然趋势,但不同勘探方法之间存在着刻画尺度差异。井中地震数据以其信噪比高、频带宽、波场信息丰富等特点成为综合应用多种勘探方法的纽带。从井中地震数据特征分析出发,分析了井中地震技术的桥梁作用。一是在钻探与地震勘探之间起到的分辨率弥补、精细层位标定、测井曲线校正等作用;二是在时间域与深度域勘探方法之间发挥了井控时深转换、地层深度预测、储层物性预测等作用;三是在纵波与横波地震勘探之间为地震波性质研究、纵横波域的转换、拟横波声波速度求取、纵横波联合反演等提供支持;四是在地震勘探向精细油藏开发延伸的过程中发挥了地震地质导向、精细构造解释、井控地层属性筛选和储层压裂监测等作用;五是为油藏静态描述与动态监测联合研究搭建桥梁,时移井中地震技术、光纤传感技术等在该领域展示出良好的应用前景。
With the research deepened in oil and gas exploration and development,continuous progress is made in a variety of exploration technologies in aspects of geology,drilling,geophysics,etc.The comprehensive application of many methods has become an inevitable trend.However,there are data and descriptive scale differences between different exploration methods.Borehole seismic technology plays an important role in the joint application of various exploration methods owing to the high signal-to-noise ratio,wide frequency band and rich wave-field information of its data.Based on the characteristic analysis of borehole seismic data,this paper summarizes the bridge role of borehole seismic technology in various exploration methods.Firstly,it can be used for resolution compensation,fine horizon calibration and logging curve correction between drilling and seismic methods.Secondly,its well-controlled time-to-depth conversion,prediction of formation depth and physical properties of reservoirs play a crucial part between timeand depth-domain exploration methods.Thirdly,it provides technical supports in the joint P-and Swave seismic exploration methods via the study of seismic wave properties,the transformation between P-and S-wave domain,the calculation of fitting S-wave acoustic velocity,and the P-and Swave joint inversion.Fourthly,it has been applied in the process of seismic exploration extending to fine reservoir development,functioning for seismic geological guidance,fine structure interpretation,well-controlled formation attribute optimization and reservoir fracturing monitoring.Finally,it builds a bridge for the joint research of reservoir static description and dynamic monitoring,especially the time-shifting borehole seismic technology and optical fiber sensing technology,which have shown good application prospects in this field.
作者
蔡志东
CAI Zhidong(School of Geophysics and Information Techno-logy,China University of Geosciences(Beijing),Beijing 100083,China;New Resources Geophysical Exploration Division,BGP Inc.,CNPC,Zhuozhou,Hebei 072751,China;Optical Science and Technology(Chengdu)Ltd.,CNPC,Chengdu,Sichuan 611730,China)
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2021年第4期922-934,I0016,共14页
Oil Geophysical Prospecting
基金
国家重点研发计划项目“多方向—多分量VSP地质构造分析及CO2监测技术研究”(2018YFB0605603)
中国石油天然气集团公司重大工程技术现场试验项目“横波震源三维地震勘探技术现场试验”(2020F-40)
科学研究与技术开发课题“3D3C-VSP页岩油成像及压裂监测技术研究”(2019E-26-04)联合资助。
关键词
井中地震
VSP
油气勘探
综合研究
桥梁作用
borehole seismic
VSP
oil and gas exploration
comprehensive research
bridge role
