US 12,000,972 B2
Attenuation of interface waves using single component seismic data
Mamadou Sanou Diallo, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Oct. 20, 2021, as Appl. No. 17/505,756.
Prior Publication US 2023/0123550 A1, Apr. 20, 2023
Int. Cl. G01V 1/36 (2006.01)
CPC G01V 1/364 (2013.01) 18 Claims
OG exemplary drawing
 
1. A method of filtering seismic data, the method comprising:
receiving seismic data from one or more seismic sensors;
storing the seismic data in a non-transitory memory component;
comparing amplitude coefficients of elements of a matrix storing the seismic data in a time-frequency domain against an amplitude threshold, and comparing frequencies of the elements of the matrix against a maximum expected frequency of noise;
for each amplitude coefficient having less than the amplitude threshold and an associated frequency less than the maximum expected frequency of noise, scaling the amplitude coefficient to reduce its value;
performing an inverse time-frequency transformation on the matrix to generate a noise model in a time domain;
subtracting the noise model from the seismic data in the time domain to generate filtered seismic data, and
displaying, on an electronic display, a graphical representation of the filtered seismic data.