A robust surface-consistent residual phase correction method based on migrated gathers

2018 ◽  
Vol 49 (3) ◽  
pp. 336-344 ◽  
Author(s):  
Jincheng Xu ◽  
Hao Zhang ◽  
Jianfeng Zhang
Keyword(s):  
Correction Method ◽  
Phase Correction ◽  
Residual Phase

Automatic phase correction of common‐midpoint stacked data

Geophysics ◽  
1987 ◽  
Vol 52 (1) ◽  
pp. 51-59 ◽  
Author(s):  
S. Levy ◽  
D. W. Oldenburg
Keyword(s):  
Phase Correction ◽  
Well Logs ◽  
Seismic Section ◽  
Measured Velocity ◽  
Residual Phase ◽  
Automatic Phase ◽  
Frequency Independent ◽  
Independent Constant ◽  
Non Gaussian ◽  
Zero Phase

The residual wavelet on a processed seismic section is often not zero phase despite all efforts to make it so. In this paper we adopt the convolutional model for the processed seismogram, assume that the residual phase shift can be approximated by a frequency‐independent constant, and use the varimax norm to generate an algorithm to estimate the residual phase directly. Application of our algorithm to reflectivities from well logs suggests that it should work in the majority of cases so long as the reflectivity is non‐Gaussian. An application of our algorithm to stacked data enhances the interpretability of the seismic section and leads to an improved match between the recovered relative acoustic impedance and a measured velocity log.

Study on Dynamic Phase Correction Method for Improving the Test Accuracy of the Pneumatic Shape Measuring Roll

2013 ◽  
Vol 457-458 ◽  
pp. 1334-1337
Author(s):  
Xu Guang Sun ◽  
Chang Hai Wang ◽  
Shi Yan Shan ◽  
Cheng Long Feng
Keyword(s):  
Correction Method ◽  
Phase Correction ◽  
Differential Pressure ◽  
Dynamic State ◽  
Test Accuracy ◽  
Dynamic Phase ◽  
Testing Accuracy

In brief introduction of the pneumatic shape measuring roller's construction and work principle, the static and dynamic state experiments of the roller then found distributing regulation and characteristics of the measuring differential pressure which following circumference direction. Then we put forward dynamic phase correction method to improve the testing accuracy of the roller. It passes by experimentation to prove the possibility of method in this text.

scholarly journals Phase correction method based on interfacial signal in swept source optical coherence tomography

2016 ◽  
Vol 65 (1) ◽  
pp. 014201
Author(s):  
Pan Cong ◽  
Guo Li ◽  
Shen Yi ◽  
Yan Xue-Guo ◽  
Ding Zhi-Hua ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Correction Method ◽  
Phase Correction ◽  
Optical Coherence ◽  
Swept Source
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