V.A. Krinin
Geological controls on the formation, occurrence, and hydrocarbon potential of the Riphean reservoir in the Baikit anteclise
DOI 10.47148/0016-7894-2026-3-37-52
Key words: Baikitsky anteclise; Yurubcheno-Tokhomsky Zone of hydrocarbon accumulation; Riphean reservoir; Kamovsky group; Vanavarsky and Oskobinsky formations; tested zone; reservoir; geological model; surface of nondepositional unconformity; nonsequence; formation thickness.
For citation: Krinin V.A. Geological controls on the formation, occurrence, and hydrocarbon potential of the Riphean reservoir in the Baikit anteclise. Geologiya nefti i gaza. 2026;(3):37–52. DOI: 10.47148/0016-7894-2026-3-37-52. In Russ.
In the central part of the Baikitsky anteclise, the Yurubcheno-Tokhomsky hydrocarbon accumulation zone is delineated, where the Yurubcheno-Tokhomsky and Kuyumbinsky fields have been discovered. Most of the commercial reserves of these fields are associated with the Riphean reservoir represented by lithologically and chronologically diverse series of the Kamovsky group underlying a nondepositional unconformity/ An exceptionally complicated reservoir architecture and low matrix porosity are typical of them. Therefore, the creation of an adequate geological model of the Riphean reservoir that allows significant improving the efficiency of hydrocarbon exploration, prospecting, and field development in the Yurubcheno-Tokhomsky zone and structurally similar objects is still necessary. Based on a large dataset on formation fluid flow rates obtained from exploration and prospecting well testing, this study identifies the geological factors affecting inflow intensity and creates a geological model of the Riphean reservoir in which three reservoir productivity zones with dominant pore-space types are identified. On the basis of the proposed model, zoning of the central part of the Baikitsky anteclise was carried out according to reservoir productivity, and new promising areas for reserves growth were identified.
Vladimir A. Krinin ORCiD
Candidate of Geological and Mineralogical Sciences,
Leading Researcher,
Krasnoyarsk Department of
All-Russian Research
Geological Oil Institute
Novosibirsk Branch,
78B, ul. Karla Marksa, Krasnoyarsk, 660000, Russia
e-mail: vkrinin@vnigni.ru
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