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We introduce the smart DAS uphole acquisition system using optical fiber as an alternative high-resolution and high-quality near-surface measurement. Distributed acoustic sensing (DAS) recording enables simultaneous listening from top to bottom with sub-meter channel spacing. Connecting individual wells using continuous fiber enables creation of a long and densely sampled imaging array with both downhole and trenched surface sensors. We refer to this array as the smart DAS uphole acquisition system. Downhole components provide direct measurement of near-surface velocity, whereas shallow horizontal segments can be used for surface-wave inversion or refraction tomography. Entire arrays can also be simultaneously used for deep reflection imaging. We present field test results validating the capabilities of this system to characterize the near surface, whereas deep imaging is discussed in other studies. Presentation Date: Tuesday, October 16, 2018 Start Time: 1:50:00 PM Location: Poster Station 10 Presentation Type: Poster
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