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Approaches to the Hydrocarbon Potential Evaluation of the Shale Strata, Domanik Deposits of Timan-Pechora Province
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE/SPE Workshop on Shale Science 2017, Apr 2017, Volume 2017, p.1 - 5
Abstract
Investigation of Domanik deposits of the Timan-Pechora province has enabled us to clarify approaches to the resources estimation through the use of geochemical parameters interconnecting with reservoir properties characteristics.
Residual hydrocarbon potential of petroleum source shale strata is determined by conditions of high-carbon deposits’ sedimentation and occurrence, scale of generation, migration and preservation ability. Comparison of the two most common approaches (standard volume and volume-genetic – geochemical) has enabled us to reveal the differences from the evaluation of conventional hydrocarbon accumulations (due to inclusion of the low-porous and low-permeable reservoirs in the effective thickness, and the need to assess the volume that left the thickness of hydrocarbon generation, and also preserved directly within it) and to offer comprehensive assessment method.
It was found that if the amount of “residual oil” (geological resources) in Domanik formation of the Timan-Pechora province estimated at 176.5 billion tones, than the residual oil volumes in petroleum source thickness can be estimated at 74 billion tons of oil and 34 trillion cubic meters of gas on the basis of comprehensive evaluation method of porous and fracture-porous space.
The main high-bituminous strata of Russia can be estimated on the basis of the proposed approach.