Huyen Bui, Thomas Klopf, Hongliu Zeng, Robert Wiener, Dario Grana, Rodney Johnston; Introduction to special section: Unconventional exploration and production — Achievements and remaining challenges. Interpretation ; 4 (2): SEi. doi: https://doi.org/10.1190/INT-2016-0316-SPSEINTRO.1
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The time of “easy oil and gas from conventional plays” has passed. In recent decades, the oil and gas industry shifted its focus to unconventional hydrocarbon resources that now make up about two-thirds of the world’s oil and gas reserves. The well-known types of unconventional resources are oil sands, oil shale, tight gas, shale gas, coal bed methane, carbonate or methane hydrates, and fractured granite basement.
The papers in this special section cover the broad spectrum of subject areas from a rock-physics approach, lithofacies classification based on well-log interpretation to geomechanical model using microseismic, azimuthal anisotropy, and stress field distribution...