Structural-Tectonic Model of Hydrocarbons Formation in the Basement of the Vietnam Shelf

The purpose of this study is to identify patterns of hydrocarbon origin within the Pre-Cenozoic basement of the Vietnam shelf. It is shown that the formation of hydrocarbon deposits is associated with protrusive granite massifs that underwent structural-tectonic reworking at the prototectonic and po...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-04, Vol.459 (4), p.42091
Main Authors: Kerimov, V Yu, Leonov, M G, Mustaev, R N
Format: Article
Language:English
Subjects:
Basements
Cenozoic
Granite
Hydrocarbons
Inhomogeneity
Lamination
Massifs
Miocene
Oligocene
Rock properties
Rocks
Tectonics
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Summary:The purpose of this study is to identify patterns of hydrocarbon origin within the Pre-Cenozoic basement of the Vietnam shelf. It is shown that the formation of hydrocarbon deposits is associated with protrusive granite massifs that underwent structural-tectonic reworking at the prototectonic and posthumous (postmagmatic) tectonic stage. Together, the posthumous structure-forming processes led to changes in the viscosity properties of rocks, their tectonic and material inhomogeneity, lamination, and, as a result, vertical and lateral spatial redistribution with the formation of granite protrusions. The mechanisms by which voids and oil and gas traps formed within protrusions are considered. Possible mechanisms for hydrocarbon migration and accumulation in basement rocks are considered. It is confirmed that the formation of hydrocarbon deposits occurred due to lateral and downward migration of hydrocarbons via contact zones from Oligocene and Miocene oil source rocks into crystalline massifs: into voids and increased fracture zones in the protrusion body.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/459/4/042091