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Simultaneous pseudo-random shuffle sweeps for increased acquisition productivityстатья Электронная публикация
- Авторы: Alexander Zhukov, Ilya Korotkov, Pavel Gridin, Evgeny Sidenko, Tagir Galikeev
- Сборник: SEG Simultaneous Source Workshop
- Том: 1
- Год издания: 2017
- Место издания: SEG Oklahoma City, Oklahoma, USA
- Первая страница: 1
- Последняя страница: 2
- Аннотация: In this work we propose generating the frequency-modulated sweep signal, where time intervals corresponding to different spectral intervals are shuffled randomly during sweeping. We start with a frequency-time curve of a conventional linear sweep for example. F-T curve is divided into intervals with a constant interval length. As a result, we end up with a group of frequency value pairs corresponding to the start and the end of any given interval, which we then shuffle in the random order. Created shuffle sweep is subjected to a cosine-based function in order to create smooth boundaries between the sweep intervals and mitigate phase jumps. Field tests were carried out by using a GDS-II vibrator electronics and conventional vibrators. GDS-II vibrator electronics is capable of generating complex sweep signals in real-time and sending them to vibrators for high production rates.
- Добавил в систему: Жуков Александр Петрович