The oil and gas contents of the Lower Jurassic and Achimovka reservoirs of the Nyurol’ka megadepression

The paper describes Lower Jurassic (horizons J16 and J15) and Achimovka (Neocomian clinoforms) reservoirs in the area of the Nyurol’ka megadepression and its framing (42,000km2). The total thicknesses of seven Achimovka sedimentary cycles are mapped. The thermal history of the Togur and Bazhenov par...

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Bibliographic Details
Published inRussian geology and geophysics Vol. 55; no. 12; pp. 1418 - 1428
Main Authors Isaev, V.I., Lobova, G.A., Osipova, E.N.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2014
Allerton Press
Subjects
Achimov Formation
Achimovka reservoir
Asia
Bazhenov Formation
Commonwealth of Independent States
Cretaceous
Criteria
deep drilling
Density
density of oil resources
drilling
Economic geology
energy sources
Framing
Geophysics
Jurassic
Lower Cretaceous
Lower Jurassic
Lower Jurassic reservoir
Mesozoic
Natural gas
Neocomian
Nyurolka Depression
Nyurol’ka megadepression
petroleum
petroleum exploration
reservoir rocks
Reservoirs
Russian Federation
sedimentary rocks
Sketches
stratigraphic traps
thermal history
thermal history of parental sediments
Togur Formation
Tomsk Russian Federation
traps
West Siberia
density of oil resources
thermal history of parental sediments
Lower Jurassic reservoir
Nyurol’ka megadepression
Achimovka reservoir
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Summary:The paper describes Lower Jurassic (horizons J16 and J15) and Achimovka (Neocomian clinoforms) reservoirs in the area of the Nyurol’ka megadepression and its framing (42,000km2). The total thicknesses of seven Achimovka sedimentary cycles are mapped. The thermal history of the Togur and Bazhenov parental sediments in the sections of 39 deep wells is reconstructed by paleotemperature modeling. The geotemperature criterion is used to identify paleosources of oil generation, starting from the Jurassic. The distribution of the relative density of the resources of the generated Togur and Bazhenov oils is estimated and shown on sketch maps. The Lower Jurassic reservoir is divided into zones depending on the distribution of the relative density of the Togur oil resources, and the Achimovka reservoir, of the Bazhenov oil resources. The priority oil search zones are proposed.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1068-7971
1878-030X
DOI:10.1016/j.rgg.2014.11.006