Prospects of early Jurassic deposits within the Khapchagay megaswell of the Vilyuy syneclise
https://doi.org/10.31660/0445-0108-2024-5-23-33
Abstract
The study of terrigenous Jurassic deposits in the Vilyuy syneclise has become increasingly important. This is because the fields contains shallow gas reserves and were first discovered in anticline traps during the 1960s. Renewed geological exploration in this region is now providing valuable new geological and geophysical data.
The aim of research is to select exploration criteria for locating hydrocarbon deposits in the territory.
Seismic exploration is a leading method of research. Based on this, an analysis is conducted on the characteristics of hydrocarbon gas deposit formation and distribution within the early Jurassic stratigraphic complex of the Vilyuy oil and gas Vilyuy oil and gas bearing region. In particular, the Khapchagay megaswell has been analyzed. The study has identified the Nedzhelinskoye local uplift as an inversion structure. A dynamic anomaly of the "bright spot" type is observed at the roof of the productive lower Jurassic deposits of the Kyzylsyr suite in the central block. Well tests confirmed the difference in hydrocarbon fluid saturation between the western and eastern parts of the Nedzhelinskaya structure. The presence of dynamic anomalies of inversion type can be seen as an exploration indicator for hydrocarbon accumulation zones in the terrigenous deposits of the Vilyuy syneclise. This is a practical significance of the work.
Keywords
Vilyuy syneclise,
Khapchagay megaswell,
early Jurassic deposits,
Kyzylsyr suite,
inversion-ring structures,
gas deposit
1.6.11. Geology, prospecting, exploration and exploitation of oil and gas fields (geological and mineralogical sciences)
About the Author
E. А. Deliu
Gazprom VNIIGAZ LLC; Industrial University of Tyumen
Russian Federation
Russian Federation
Ekaterina А. Deliu, senior geologist, Postgraduate
Tyumen
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Review
For citations:
Deliu E.А. Prospects of early Jurassic deposits within the Khapchagay megaswell of the Vilyuy syneclise. Oil and Gas Studies. 2024;(5):23-33. (In Russ.) https://doi.org/10.31660/0445-0108-2024-5-23-33
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