基于广义S变换及雷克子波谱的时变谱模拟反褶积  

Time-varying spectrum simulation deconvolution based on generalized S-transform and Ricker wavelet spectrum

作　　者：李文平[1] 马洪涛[1] 刁新东 冯家元 何幼娟 方芹 顾维力[1] 娄大娜[1] LI Wenping;MA Hongtao;DIAO Xindong;FENG Jiayuan;HE Youjuan;FANG Qin;GU Weili;LOU Dana(Research Institute of Exploration and Development,Northwest Oilfield Company,SINOPEC,Urumqi 830011,China)

机构地区：[1]中国石化西北油田分公司勘探开发研究院,新疆乌鲁木齐830011

出　　处：《断块油气田》2025年第2期251-258,共8页Fault-Block Oil & Gas Field

基　　金：中石化地球物理重点实验室开放基金项目“时空高阶精度紧致有限差分地震波场数值模拟及逆时偏移”(36750000-24-FW0399-0004)。

摘　　要：复杂油气藏勘探开发难度的增加,要求地震资料有较高的分辨率,以提高薄储层的识别精度。反褶积技术是一种通过压缩地震子波、恢复反射系数以提高地震分辨率的方法。文中在常规多项式谱模拟反褶积的基础上,提出了一种新的雷克子波振幅谱模拟目标函数,在考虑地震子波特点的同时,避免了常规处理中对拟合参数的选择,减少了人为因素的影响,提高了谱模拟的精度和效率。此外,在非时变和加窗时变谱模拟反褶积的基础上,结合广义S变换,进一步提出了时频域的时变谱模拟反褶积技术。该研究对简单理论模型、随机反射系数和实际资料进行了处理,对比了不同子波函数时变、非时变以及广义S变换的处理效果,最终结果验证了文中方法比常规方法具有更好的提高分辨率效果。The increasing difficulty of exploring and developing complex oil and gas reservoirs has required seismic data with higher resolution in order to improve the identification accuracy of thin reservoirs.Deconvolution technology is a method to improve seismic resolution by compressing seismic wavelets and recovering reflection coefficients.This study proposes a new target function for simulating Ricker wavelet amplitude spectra based on conventional polynomial spectrum simulation of deconvolution,considering seismic wavelet characteristics and avoiding the selection of fitting parameters in conventional methods,thereby reducing the influence of human factors and improving the accuracy and efficiency of spectrum simulation.Additionally,based on non-time-varying and windowed time-varying spectrum simulation of deconvolution,a time-frequency domain time-varying spectrum simulation deconvolution technology is further introduced by integrating the generalized S-transform.In this study,the simple theoretical model,random reflection coefficients and actual data were processed,and the processing effects of time-varying,non-time-varying and generalized S-transform on different wavelet functions were compared.The final results verified that the proposed method has better resolution improvement effect than conventional methods.

关 键 词：广义S变换 雷克子波 谱模拟 反褶积 高分辨率地震勘探 

分 类 号：TE122[石油与天然气工程—油气勘探]