Patent Document ID: 9625593
Application ID: 13614932
Patent Status: 1

Claim One:
1. A method for processing seismic data, the method comprising: a. obtaining a plurality of initial subsurface images, wherein each of the initial subsurface images is generated using a unique random set of encoding functions, and the initial subsurface images are obtained by simultaneous-source reverse-time migration; b. decomposing each of the initial subsurface images into components, wherein the decomposing is performed by a transform generating a set of transform coefficients for each initial subsurface image; c. identifying a set of components comprising one of (i) components having at least one substantially similar characteristic across the plurality of initial subsurface images, and (ii) components having substantially dissimilar characteristics across the plurality of initial subsurface images, wherein step c includes averaging the transform coefficients to generate a preliminary signal transform coefficient estimate and computing a variance of at least a subset of the transform coefficients to determine a noise level in the preliminary signal transform coefficient estimate; and d. generating an enhanced simultaneous-source reverse-time migration subsurface image using the set of components identified in step c, wherein step d includes attenuating noise in the transform coefficients using the determined noise level and the preliminary signal transform coefficient estimate to generate attenuated transform coefficients, and performing an inverse transform on the attenuated transform coefficients to generate the enhanced simultaneous-source reverse-time migration subsurface image; wherein steps a-d are performed using a computer.