Methods and systems for acquiring seismic data of four-component ocean bottom node (OBN)

US12013509B2 · kind B2 · utility

Assignees

• BGP INC., CHINA NATIONAL PETROLEUM CORPORATION · CN
• OPTICAL SCIENCE AND TECHNOLOGY (CHENGDU) LTD · CN

Inventors

• Liang Gou · San Jose, US
• Gang Yu · Lo Wu, CN
• Haibo Liu · 东风镇, CN
• Zhaohong Xu · Lo Wu, CN
• Ximing Wang · Beijing, CN
• Shujun Xia · Baoding, CN
• Shujie An · Baoding, CN
• Mengxiong Xiao · Baoding, CN

Key dates

• Filing date: Dec 25, 2023
• Grant date: Jun 18, 2024
• Expiry date: Dec 25, 2043

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A90/30
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present disclosure provides a method and a system for acquiring seismic data of a four-component ocean bottom node (OBN). The method is implemented by the system, comprising controlling installations of a plurality of ocean bottom submerged buoys and a plurality of four-component OBN seismic data acquisition instruments and sending positioning signals and timing signals to the plurality of ocean bottom submerged buoys through armored opto-electronic composite cables. The method also includes obtaining real-time and uninterrupted water temperature data, pressure data, density data, and salt saturation data along the armored opto-electronic composite cables from the ocean surface to locations of the plurality of ocean bottom submerged buoys, and calculating real-time and three-dimensional data of waters of a whole measurement work area through interpolation. The method further includes performing real-time correction on a hydroacoustic velocity of each hydroacoustic propagation trajectory based on the location, the hydroacoustic propagation trajectory and the three-dimensional data of each acquisition instrument.