China National Petroleum has been granted a patent for a method and system to acquire seismic data from a four-component ocean bottom node. The system involves deploying buoys, cables, and instruments to collect real-time water data and perform accurate positioning for data accuracy. GlobalData’s report on China National Petroleum gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on China National Petroleum, AI assisted CAD was a key innovation area identified from patents. China National Petroleum's grant share as of May 2024 was 67%. Grant share is based on the ratio of number of grants to total number of patents.
Method and system for acquiring seismic data of obn
The granted patent (Publication Number: US12013509B2) discloses a method for data acquisition of a system designed to acquire seismic data from a four-component ocean bottom node (OBN). The system includes various components such as ocean bottom submerged buoys, ocean surface buoys, armored opto-electronic composite cables, four-component OBN seismic data acquisition instruments, and an ocean surface seismic source vessel. The method involves deploying the instruments in a pre-designed measurement grid on the ocean bottom, utilizing hydroacoustic signal emission sources, GPS, and satellite signal receiving antennas on the buoys, and employing optical fibers within the composite cables to obtain real-time water parameters. The system ensures accurate positioning and timing of the seismic data acquisition instruments through a series of interconnected processes involving hydroacoustic velocity correction and data interpolation based on water temperature, pressure, density, and salt saturation values.
Furthermore, the method described in the patent involves the activation of instruments in both the ocean bottom submerged buoys and ocean surface buoys, facilitating the transmission of positioning and timing signals to ensure uninterrupted real-time data acquisition. By utilizing advanced technology such as fiber optic geophones, acoustic pressure hydrophones, and attitude sensors within the seismic data acquisition instruments, the system aims to meet stringent measurement error requirements of the work area. The integration of real-time hydroacoustic velocity correction for each propagation trajectory and continuous monitoring of water parameters along the composite cables contribute to the overall accuracy and reliability of the seismic data acquisition process. Overall, the patented method presents a comprehensive approach to acquiring seismic data from ocean bottom nodes, emphasizing precision, real-time monitoring, and data integrity throughout the data acquisition process.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
