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Geostatistical Inversion Guides Development In Complex Formations

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DENVER–The economics of unconventional plays can be improved by placing horizontal wellbores to target facies with the most favorable reservoir and geomechanical properties. Recognizing that, an integrated multidisciplinary approach was developed to reduce economic risk, facilitate improved and faster decision making, and enable more efficient and effective well placement in a tight, stratigraphically complex Upper Cretaceous Sandstone in the Powder River Basin. The subsurface environment was known to exhibit significant variations in lithofacies and reservoir properties, both laterally and vertically. The objective was to provide an accurate and synergized understanding of interwell reservoir characteristics, quantitatively honoring all input geoscience data and verifying through blind well testing. That goal was achieved by utilizing geostatistical inversion to predict lithofacies and reservoir rock/geomechanical properties that honored data from multiple disciplines.
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Publications

American Oil & Gas Reporter

Authors

HaiHong Wang, Kevin Chesser, Jeff Zawila, Samuel Fluckiger, Gary Hughes, Preston Kerr, Andrew Hennes, Howard J. Tichmarsh, Michael Hofmann

Month

September

Copyright

© 2016 The American Oil & Gas Reporter