Method to estimate and remove direct arrivals from arrayed marine sources
US10126451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2017 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Feb 8, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/59
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for obtaining zero-offset and near zero offset seismic data from a marine survey, with separation of direct arrival information and reflectivity information, the method including: modeling a direct arrival estimate at a passive near-field hydrophone array by using a notional source separation on active near-field hydrophone data; generating reflection data for the passive near-field hydrophone array by subtraction of the modeled direct wave from data recorded by the passive near-field hydrophone array; generating near zero-offset reflectivity traces by stacking the reflection data for the passive near-field hydrophone array on a string-by-string basis or on a combination of strings basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.