Tomographically enhanced full wavefield inversion

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United States of America Patent

PATENT NO 10698126
APP PUB NO 20180045839A1
SERIAL NO

15614954

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Abstract

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A computer-implemented method for updating a physical properties model of a subsurface region in an iterative inversion of seismic data using a gradient of a cost function that compares the seismic data to model-simulated data, said method comprising: obtaining a contrast model of a subsurface physical parameter that is sensitive to data dynamics and a kinematic model of a subsurface physical parameter; determining a gradient of a cost function using the contrast model and the kinematic model, wherein the cost function compares seismic data to model-simulated data; updating the kinematic model using a search direction derived from the gradient; adapting the contrast model according to an update to the kinematic model performed in the updating step; iteratively repeating the determining, updating, and adapting steps until a predetermined stopping criteria is reached, and generating a subsurface image from a finally updated kinematic model; and using the subsurface image to prospect for hydrocarbons.

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Patent Owner(s)

  • EXXONMOBIL UPSTREAM RESEARCH COMPANY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akcelik, Volkan Spring, US 5 12
Baumstein, Anatoly I Houston, US 10 63
Lee, Sunwoong Houston, US 18 383
Tang, Yaxun Spring, US 14 89

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