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Channelized System Reservoir Characterization Using Diffraction Imaging - Practical Aspect of a Novel Technique
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
Summary
The seismic processing technique known as “Diffraction Imaging” has demonstrated to be an interesting method in order to map geological sub surface discontinuities, in special those high frequency features related to such as discontinuities. They have been study in the prestack time as well as in the prestack depth domain by several authors. Detection of geobodies (channel system) is important when developing continental type sandstone reservoirs. Understanding the location and orientation of such as features is important for optimal well placement and field delineation. Seismic diffraction can be used for imaging not only systems of natural fractures but also for mapping wedge limits caused by channels. Diffracted waves are created when an incident wavefield encounters small size objects or even discontinuities such as faults, sharp curvature geoforms or wedges. The diffractive portion of this wavefield can be extracted from its total in order to produce images that contain information regarding subsurface scattered energy due to discontinuities. This is the first time that this technique is applied in the company in order to characterise and improve the delineation of channel systems.
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