Methods and systems to separate seismic data associated with impulsive and non-impulsive sources

US11378706B2 · kind B2 · utility

Assignee

• PGS Geophysical AS · NO

Inventors

• Nils Lunde · Oslo, NO
• Okwudili Orji · Oslo, NO
• Mattias Oscarsson · Oslo, NO

Key dates

• Filing date: Sep 18, 2018
• Grant date: Jul 5, 2022
• Expiry date: May 6, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V2210/20
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Methods and systems to separate seismic data associated with impulsive and non-impulsive sources are described. The impulsive and non-impulsive sources may be towed through a body of water by separate survey vessels. Receivers of one or more streamers towed through the body of water above a subterranean formation generate seismic data that represents a reflected wavefield produced by the subterranean formation in response to separate source wavefields generated by simultaneous activation of the impulsive source and the non-impulsive source. Methods and systems include separating the seismic data into impulsive source seismic data associated with the impulsive source and non-impulsive source seismic data associated with the non-impulsive.