Patent · US Active

Velocity tomography using property scans

US9977141B2 · kind B2 · utility

3Cited by
131References
12Claims
0Family size

Assignee

Inventor

Key dates

Filing dateAug 5, 2015
Grant dateMay 22, 2018
Priority date—
Expiry dateJul 12, 2036

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01V2210/675
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Method for building a subsurface model of velocity or other elastic property from seismic reflection data using tomography. The method uses velocity scans to pick a focusing velocity model at each image point (40). The focusing velocities are used to pick depth errors from tables (60) generated using a tomographic inversion matrix (30) and a suite of different velocity models (10). The depth errors are then reconstructed at each image point from the velocity scans based on the difference between the base velocity model and the most coherent velocity from the scan (70). The reconstructed depth errors are used to compute the velocity model update (80).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.