石油物探2025，Vol.64Issue(2)：199-217,19.DOI:10.12431/issn.1000-1441.2023.0391
针对客户定制高分辨率子波的可控震源扫描信号设计方法
Design method of vibrator sweep signal for customized high-resolution wavelet
摘要
Abstract
Due to the advancements of seismic data acquisition and imaging with"wide band,wide azimuth,and high density",thin layers,small-scale(fractured-vuggy)anomalous bodies,and small-throw faults(strike-slip faults),etc.have become the main target geological bodies for high-fidelity and high-resolution imaging.In current seismic exploration,reasonable observation system design has received sufficient attention,but how to achieve customized high-resolution wavelets for the customers is rarely discussed.In theory,vibroseis is a method of obtaining the amplitude spectrum of expected seismic wavelet through the accumulation of single-frequency energy within time intervals in the frequency and time domain.Based on this,we propose the concept of customized high-resolution seismic wavelets and corresponding sweep signals for the customers.The first step is to generate(or customize)a zero-phase wavelet,which meets the requirements of high-fidelity and high-resolution on a specific target layer,and obtain its corresponding amplitude spectrum.The second step is to establish the mapping relationship between the amplitude spectrum of the customized wavelet and the vibrator sweep signals.Finally,the vibrator sweep signals are designed under the assumption of linear sweep frequency.We use formula derivation and model tests to demonstrate the feasibility of our method.Forward modeling and migration tests also show that the customized high-resolution wavelet could be used in high-resolution processing.关键词
高分辨率地震勘探/地震数据采集/可控震源/高分辨子波设计/扫描信号设计Key words
high resolution seismic exploration/seismic data acquisition/vibrator/high-resolution wavelet design/sweep signal design分类
地质学引用本文复制引用
聂振波,王华忠,盛燊,许荣伟..针对客户定制高分辨率子波的可控震源扫描信号设计方法[J].石油物探,2025,64(2):199-217,19.基金项目
国家自然科学基金项目(42174135,42304124,42074143)、国家重点研发计划变革性技术关键科学问题重点专项(2018YFA0702503)、中国博士后科学基金项目(2023M732633)和中石油集团前瞻性基础性项目"物探岩石物理与前沿储备技术研究"(2021DJ3501)共同资助. This research is financially supported by the National Natural Science Foundation of China(Grant Nos.42174135,42304124,42074143),the National Key R&D Program of China(Grant No.2018YFA0702503),the China Postdoctoral Science Foundation(Grant No.2023M732633)and the Project of Science and Technology of CNPC(Grant No.2021DJ3501). （42174135,42304124,42074143）
