Method and apparatus for determining rough sea topography during a seismic survey
AssigneeSchlumberger Technology Corporation
InventorsRichard Coates, Craig Beasley, Hannah Flath, Clara Castellanos Lopez
Life of this patent
Estimating the term…
Abstract
A method comprising for deghosting seismic data is disclosed. The method includes the steps of acquiring seismic data by conducting a survey of a subsurface area of interest wherein the seismic data includes ghost data and estimating a time-varying wave height above the subsurface area of interest during at least a portion of the survey, wherein the estimation of the wave height is based at least in part on a remote measurement of the wave height during the survey. The estimated time-varying wave height is used to characterize the ghost data and deghost the seismic data based at least in part on the characterized ghost data.
Claims19
A method comprising:
- acquiring seismic data by conducting a survey of a subsurface area of interest wherein the seismic data includes ghost data;
- estimating a time-varying wave height above the subsurface area of interest during at least a portion of the survey, wherein the estimation of the wave height is based at least in part on a remote measurement of the wave height during the survey, wherein the wave height is measured using an underwater vehicle equipped with a synthetic aperture radar (SAR) system;
- using the estimated time-varying wave height to characterize the ghost data;
- and
- deghosting the seismic data based at least in part on the characterized ghost data.
A method comprising:
- acquiring seismic data by conducting a survey of a subsurface area of interest wherein the seismic data includes ghost data;
- remotely measuring a wave height above at least a portion of the subsurface area of interest during a portion of the survey, and wherein remotely measuring is coordinated with a firing of one or more seismic shots;
- using the measured wave height to characterize the ghost data;
- and
- deghosting the acquired seismic data based at least in part on the characterized ghost data.
A system, comprising:
- a processor;
- a non-transitory memory comprising program instructions executable by the processor to:
- acquire seismic data by conducting a survey of a subsurface area of interest wherein the seismic data includes ghost data;
- remotely estimate a wave height above the subsurface area of interest at pre-determined time intervals during the survey, wherein the estimation of the wave height is based at least in part on a remote measurement of the wave height, and wherein remotely estimating is coordinated with a firing of one or more seismic shots;
- characterize the ghost data based at least in part on the estimated wave height;
- and
- deghost the acquired survey data based at least in part on the characterized ghost data.
A method comprising:
- acquiring seismic data by conducting a survey of a subsurface area of interest wherein the seismic data includes ghost data;
- remotely measuring wave height while acquiring the seismic data, wherein remotely measuring is coordinated with a firing of one or more seismic shots;
- and
- deghosting the seismic data based at least in part on the measured wave height.
Dependencies are inferred from the claim text.