An automatic seismic horizon picking-up method based on one dimensional slice of cross fourth order cumulant

作者：Feng Zhi Hui^*; Liu Cai; Feng Xuan; Wang Dian; Wang Zhao Guo

来源：Oil Geophysical Prospecting, 2011, 46(1): 58-63.

• Application effect
• Automatic horizon picking-up
• Basic principles
• Colored noise
• Cross fourth order cumulant
• Exact algorithms
• Fault point
• Field data
• Fourth order cumulant
• Gaussians
• Its efficiencies
• Manual methods
• One-dimensional slice
• Seismic event
• Seismic horizon picking
• Theoretical models
• Time delay estimation

In order to solve the problem in which the seismic horizon can not correctly picked up under the strong coherent Gaussian colored noise, an automatic seismic horizon picking-up method based on one dimensional slice of cross fourth order cumulant was proposed in this paper. The basic principle and exact algorithm of the method were also elaborated in this paper. The similarity of the seismic horizon over the horizontal direction and the insensitivity of the cross fourth order cumulant to Gaussian colored noise were utilized in realizing the time delay estimation of the seismic events, meanwhile the relevant parameters which directly affect the picking-up accuracy of the seismic horizon were set. The calculation for the theoretical model shows that the method has very strong restraining ability for the coherent Gaussian colored noise and its signal to noise ratio reaches -10dB. The application effects of the field data match well with the geological horizons and the locations of the faults and the fault points were accurate. It is noticed that the picking-up accuracy of the method could replaces that of the manual method, however its efficiency is much higher than the manual method.

• 出版日期2011