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High Resolution 3D VSP Imaging: A Case Study from an Offshore Field in Qatar
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, First EAGE Workshop on Borehole Geophysics, Jan 2011, cp-207-00007
- ISBN: 978-90-73781-95-5
Abstract
A 3D VSP was acquired over the Bul Hanine field in Qatar to evaluate the improvement in reservoir characterization using high resolution images. VSP data were imaged using both single and three-component processing – median filter, plane-wave decomposition and VSP deconvolution being the main steps of the processing flow. The initial model was built using checkshot data from multiple wells and was calibrated using 3D traveltime inversion of the 3D VSP and ZVSP transit times. Imaging of the upgoing VSP data demonstrated the improved resolution compared to the existing surface seismic. Ant tracking of the VSP image cube revealed fracture patterns consistent with the known geology.