High-resolution seismic acquisition device

US6366536B1 · kind B1 · utility

Assignees

• Total Fina Elf S.A. · FR
• Etudes et Recherches Realisations Mecaniques et Electroniques (Eramer) · FR
• Institut Francais de Recherche Pour l'Exploitation de la Mer (IFREMER) · FR

Inventors

• Thierry Des Vallieres · Boulogne, FR
• Jacques Meunier · Paris, FR
• Gilles Grosso · Six-Fours-les-Plages, FR

Key dates

• Filing date: Mar 19, 2001
• Grant date: Apr 2, 2002
• Expiry date: Mar 19, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V1/38
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a seismic acquisition device in a marine environment. The device comprises a Janus Helmholtz (12) transducer which is able to operate at a large depth of immersion and to sound waves in a wide frequency band, a calculator (13) to program at will the frequency band and the form of the sound waves emitted by the transducer, a power amplifier (14) that can control the transducer in order to provide the emitted sound waves with predetermined power levels, an impedance adapter (16) placed between the transducer (12) and the amplifier to enable wide band and power adaptation, and a receiver (18) to capture the seismic waves reflected by the different layers of the sea bed.