期刊文献+

Separation of diffracted waves via SVD filter 被引量:3

下载PDF
导出
摘要 Diffracted seismic waves may be used to help identify and track geologically heterogeneous bodies or zones.However,the energy of diffracted waves is weaker than that of reflections.Therefore,the extraction of diffracted waves is the basis for the effective utilization of diffracted waves.Based on the difference in travel times between diffracted and reflected waves,we developed a method for separating the diffracted waves via singular value decomposition filters and presented an effective processing flowchart for diffracted wave separation and imaging.The research results show that the horizontally coherent difference between the reflected and diffracted waves can be further improved using normal move-out(NMO) correction.Then,a band-rank or high-rank approximation is used to suppress the reflected waves with better transverse coherence.Following,separation of reflected and diffracted waves is achieved after the filtered data are transformed into the original data domain by inverse NMO.Synthetic and field examples show that our proposed method has the advantages of fewer constraints,fast processing speed and complete extraction of diffracted waves.And the diffracted wave imaging results can effectively improve the identification accuracy of geological heterogeneous bodies or zones.
出处 《Petroleum Science》 SCIE CAS CSCD 2020年第5期1259-1271,共13页 石油科学(英文版)
基金 supported by the National Natural Science Foundation of China(41874123) Shaanxi Province Natural Science Basic Research Project(2017JZ007) PetroChina Innovation Foundation(2014D-5006-0303)。
  • 相关文献

参考文献1

二级参考文献7

  • 1Landa E, Keydar S. Seismic monitoring of diffraction images for detection of local heterogeneities. Geophysics, 1998, 63(3): 1093-1100.
  • 2Tcheverda V, Pozdnyakov V A. 3D focusing transformation: reliable tool for imaging of scattering objects. // Abstracts of SEG/New Orleans 2006 Annual Meeting, 2006: 2564-2568.
  • 3Khaidukov V. Diffraction imaging by a focusing-defocusing approach. // Expanded Abstracts of 73rd Annual Internat SEG Mtg, 2003: 26-31.
  • 4Nowak E J, Imhof M G, Tech V. Diffractor localization via weighted Radon translations. // Expanded Abstracts of 74th Annual Internat SEG Mtg, 2004: 10-15.
  • 5Bansal R, Imhof M G. Diffraction enhancement in prestack seismic data. Geophysics, 2005, 70(3): V73-V75.
  • 6Harlan W S, Claerbout J F, Rocca F. Signal/noise separation and velocity estimation. Geophysics, 1984, 49(11): 1869-1880.
  • 7曲寿利,朱生旺,赵群,李佩.碳酸盐岩孔洞型储集体地震反射特征分析[J].地球物理学报,2012,55(6):2053-2061. 被引量:47

共引文献32

同被引文献19

引证文献3

二级引证文献4

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部