TY - JOUR

T1 - Evaluation of Cretaceous deposits of the Yamal Peninsula for their hydrocarbon potential based on the water-gas equilibria modeling results

AU - Novikov, D. A.

PY - 2020/9/9

Y1 - 2020/9/9

N2 - Results of the evaluation of petroleum-bearing potential of Yamal's Cretaceous deposits based on the study of water-gas equilibria are presented. It has been established that the "water-gas"system within them has a complex and unequal pattern. Hydrocarbon accumulations serve as "relics"of antecedent hydrogeological epochs, with groundwater being the most mobile component of this system. The sediments composition is therefore subjected to a slow directional change aimed at establishing an equilibrium, which subsequently results in a qualitatively new state of their geochemical framework. Most of the studied area is characterized by very favorable conditions for persistent preservation of oil and gas accumulations. In northern and central regions of Yamal, there is a slight shift in the water - gas system phase equilibrium, suggesting a potential for discovery of new oil/gas pools and significant hydrocarbon reserves within them. The analysis confirmed the presence of earlier discovered hydrocarbon pools within the studied fields and enabled prediction of new thirteen accumulations. The hydrogeochemical analysis and the water-gas equilibria modeling results have shown that the prospects are significantly lower for new discoveries in SW Yamal.

AB - Results of the evaluation of petroleum-bearing potential of Yamal's Cretaceous deposits based on the study of water-gas equilibria are presented. It has been established that the "water-gas"system within them has a complex and unequal pattern. Hydrocarbon accumulations serve as "relics"of antecedent hydrogeological epochs, with groundwater being the most mobile component of this system. The sediments composition is therefore subjected to a slow directional change aimed at establishing an equilibrium, which subsequently results in a qualitatively new state of their geochemical framework. Most of the studied area is characterized by very favorable conditions for persistent preservation of oil and gas accumulations. In northern and central regions of Yamal, there is a slight shift in the water - gas system phase equilibrium, suggesting a potential for discovery of new oil/gas pools and significant hydrocarbon reserves within them. The analysis confirmed the presence of earlier discovered hydrocarbon pools within the studied fields and enabled prediction of new thirteen accumulations. The hydrogeochemical analysis and the water-gas equilibria modeling results have shown that the prospects are significantly lower for new discoveries in SW Yamal.

KW - equilibrium

KW - modeling

KW - prediction of petroleum potential

KW - the Arctic

KW - water-gas system

KW - Western Siberia

KW - Yamal

UR - http://www.scopus.com/inward/record.url?scp=85091800037&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1451/1/012015

DO - 10.1088/1742-6596/1451/1/012015

M3 - Conference article

AN - SCOPUS:85091800037

VL - 1451

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012015

T2 - 2nd International Conference on Applied Physics, Power and Material Science, ICAPPM 2019

Y2 - 20 December 2019 through 21 December 2019

ER -