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Remaining Gas Prediction with Walkaround VSP Data: A Case Study from Junggar Basin, China
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 3rd EAGE Workshop on Borehole Geophysics, Apr 2015, cp-447-00037
- ISBN: 978-94-6282-144-6
Abstract
Two VSP surveys were acquired around DX10 well in Junggar basin in 2004 and 2013, respectively. This study analyzed kinds of time-frequency attributes sensitive to gas reservoir from zero offset time-lapsed VSP data and walkaround VSP data. Reasonable estimation of the remaining gas distribution was derived with the hydrocarbon detection attributes, which is helpful for sidetrack well planning.