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oa Prospective Hc-Bearing Objects in Western Part of Yenisei-Khatanga Regional Through
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Geomodel 2017, Sep 2017, Volume 2017, p.1 - 6
Abstract
Complex interpretation for the Yenisei-Khatanga regional trough was conducted using the latest available well and 2D-seismic data. As a result of work more than 20 HC traps, falling into 3 categories (structural, structural-depositional and purely depositional), were identified. Traps are primarily associated with neocomian complex. Most traps are found to be purely structural and associated with inherited folds. These traps are accompanied by inverted circular structures (ICS) caused by low velocity anomalies (VAMP structures). Such features are clearly visible on time and flattened-time sections. For depositional traps localisation, strong correlation was found with thr geomorphology of pre-neocomian sea floor. Thickness maps for upper jurassic sediments were compiled to assist in delineating such depositional traps. Areal extent of tectonic-depositional traps appeared to be constrained by the northern part of the through. These traps are structural ones, but their closure in northern direction, which is critical due to the regional raising trend, is formed by the dipping clinororm beds.