Northern and central regions of Verkhoyansk Foredeep: sedimentary cover petroleum potential and hydrocarbon traps prediction

2021 ◽  
pp. 25-36
Author(s):  
Leonid Naidenov
Keyword(s):  
Sedimentary Cover ◽  
Petroleum Potential ◽  
Hydrocarbon Traps ◽  
Central Regions

Tectonic-structural analysis of deposits in sediments of contact between sedimentary cover and basement

2020 ◽  
pp. 8-19
Author(s):  
E. S. Milei ◽  
S. R. Bembel
Keyword(s):  
Oil And Gas ◽  
Pannonian Basin ◽  
Sedimentary Cover ◽  
Geological Structure ◽  
Southeastern Part ◽  
Hydrocarbon Traps ◽  
Deep Faults ◽  
Adjacent Structures ◽  
Wide Range ◽  
Characteristic Features

The article is devoted to a comprehensive analysis of the geological structure of a complex oil reservoir located in the southeastern part of the Pannonian basin. The concept of the hydrocarbon traps formation is based on the connection with the deep processes of oil and gas formation and phenomena, which lead to the formation of cracks, faults, local positive structures in the interval from the foundation to the upper part of the sedimentary cover. The article shows the significance of deep faults in the basement during the formation of sedimentary cover structures. These processes result in a wide range of oil and gas potential of the Pannonian basin deposits. In studying the specifics of tectonic movements and the features of gravitational deposits (conglobreccia), a tectono-sedimentary approach has been developed that can reduce a number of methodological difficulties in creating geological models and concepts. Recommendations are given on the additional study of adjacent structures in order to detect hydrocarbon deposits on the slopes with protrusions of the crystalline basement. Characteristic features of the geological structure are the local volume of the identified oil and gas deposits, small foci of increased productivity and improved filtration properties of reservoirs. Such features of the uneven distribution of sites of different productivity have a significant impact on the success of prospecting and exploration, the effectiveness of development of oil and gas deposits.

Features of filling reservoirs with hydrocarbons in the territories with a low maturity of the oil and gas parent rocks (a case study of Jurassic hydrocarbon traps in the Uvat district)

2021 ◽  
pp. 21-35
Author(s):  
O. V. Elisheva ◽  
M. N. Melnikova ◽  
M. M. Kudrayvtseva ◽  
I. O. Baburina
Keyword(s):  
Oil And Gas ◽  
Sedimentary Cover ◽  
Great Influence ◽  
Lateral Migration ◽  
Bazhenov Formation ◽  
Local Structures ◽  
Hydrocarbon Traps ◽  
Parent Rocks ◽  
Geological Factors

The article is devoted to the results of an analysis of geological factors that had a great influence on the filling of Jurassic traps with hydrocarbons. Based on the results of paleotectonic analysis, three key stages of reconstructions of the structural plans of sedimentary cover deposits were identified. Each stage was characterized not only by the appearance of new traps in the interval of Jurassic deposits, but also by the sinking of rocks of Bazhenov formation to a certain depth. It is revealed that in most of the territory of the Uvat district, Bazhenov formation didn't have time to fully realize its hydrocarbon-generating potential. In the Central and Eastern regions it entered the main zone of oil formation only in the Paleogene. Since the development of the relief of modern structural plans of Jurassic deposits in this area occurred in several stages, both the formation of traps and the lateral migration of hydrocarbons also occurred in stages. The first stage of migration occurred at the boundary of the lower and upper Cretaceous, the second stage occurred at the beginning of the Paleogene. As a result, the combined influence of lateral migration of hydrocarbons and the gradual formation of local structures in different areas of the Uvat district led to selective filling of Jurassic hydrocarbon traps.

Hammerfest Basin Composite Tectono-Sedimentary Element

2021 ◽  
pp. M57-2017-23
Author(s):  
E. Henriksen ◽  
L. Kvamme ◽  
T. A. Rydningen
Keyword(s):  
Late Jurassic ◽  
Oil And Gas ◽  
Barents Sea ◽  
Oil Field ◽  
Upper Permian ◽  
Tectonic Event ◽  
Petroleum Potential ◽  
Isostatic Rebound ◽  
Hydrocarbon Traps ◽  
Entry Points

AbstractThe Hammerfest Basin is an E -W trending graben located between the Loppa High and the Finnmark Platform in the southern part of the Norwegian Barents Sea. Mainly siliciclastic strata of Carboniferous to Cenozoic age cover the Caledonian basement and have a total estimated thickness of 5-8 km. The basin evolved through several tectonic phases: the Carboniferous rifting, Late Jurassic rifting, the opening of the Atlantic Ocean, Oligocene reorganisation of plate movements and postglacial isostatic rebound. An E-W trending dome in the centre of the basin developed during the main extensional tectonic event in Late Jurassic. Horst structures represent the main hydrocarbon traps. Erosional channels on the flanks of the basin represent entry points for Lower Cretaceous sands. For the rest of the Cretaceous and Cenozoic intervals no significant reservoir sands are expected.The first exploration well in the Barents Sea in 1980 was located in the Hammerfest basin, and by 2019 a total of 45 wells had been drilled in the basin where 34 are classified as exploration wells. The result is 18 oil and gas discoveries, which gives a discovery rate of 53%. Two fields are now in production: the Snøhvit gas-condensate fields and the Goliat oil field.A total of 340 Msm3 (2140 Mbbl) recoverable oil equivalents have been discovered. For the middle Jurassic Play, the yet-to-find potential may be around 50 Msm3, distributed in several small structures in the basin. Following the oil discovery in the Middle Triassic interval in the Goliat structure, and because several of the previously drilled structures only penetrated the Jurassic and the uppermost Triassic section, considerable exploration potential may exist in the deeper Triassic interval in structures with the best reservoir facies. Stratigraphic traps of Cretaceous age may have a moderate petroleum potential, with excellent reservoirs encountered along the flank of the basin. Exploration potential may also exist in Upper Permian sandstones along the southern and eastern flanks of the basin. However, in large parts of the basin, the remaining potential is in the deep structures and hence is gas prone.

scholarly journals SEISMIC AND GEOLOGICAL CHARACTERISTICS OF SEDIMENTARY SEQUENCES AND PETROLEUM POTENTIAL OF THE YAMAL, GYDAN AND SOUTH KARA PETROLEUM AREAS (Arctic regions of West Siberia, the Kara Sea shelf)

2019 ◽  
pp. 10-26
Author(s):  
V. A. Kontorovich ◽  
D. V. Ayunova ◽  
S. M. Guseva ◽  
L. M. Kalinina ◽  
A. Yu. Kalinin ◽  
...  
Keyword(s):  
Sedimentary Cover ◽  
West Siberia ◽  
Kara Sea ◽  
The Arctic ◽  
Bright Spot ◽  
Petroleum Potential ◽  
Seismic Sequences ◽  
Sedimentary Sequences ◽  
Arctic Regions ◽  
Seismic Anomaly

There are six sedimentary seismic sequences overlying pre-Mesozoic basement in the Mesozoic-Cenozoic sedimentary cover of the Arctic regions of West Siberia and the Kara Sea shelf. The paper describes the seismic markers characteristics and the seismic-facial features of the Paleozoic, Triassic, Jurassic, Neocomian, Apt-Cenomanian and TuronianCenozoic seismic sequences. It was concluded that the features of large Cenomanian gas pools are seismic markers associated with gas-water contacts; Apt-Albian pools are displayed on time sections by a bright spot seismic anomaly.

FEATURES OF THE FORMATION OF STRUCTURAL TRAPS AND THEIR RELATIONSHIP WITH OIL AND GAS CONTENT(ON EXAMPLE OF THE CENTRAL REGIONS OF WESTERN SIBERIA)

2017 ◽  
pp. 47-53
Author(s):  
F. Z. Khafizov ◽  
Ya. R. Kekhter
Keyword(s):  
Western Siberia ◽  
Oil And Gas ◽  
Gas Content ◽  
Petroleum Potential ◽  
Local Structures ◽  
Central Regions ◽  
Tectonic Development

The article describes the study of the formation of local structures in the Middle Ob region. The connec-tion between the tectonic development of the territory and its petroleum potential has been proved.

scholarly journals STUDY OF JURASSIC AND NEOCOMIAN AGE BARRIER TRAPS TO INCREASE THE PETROLEUM POTENTIAL OF THE YAMAL PENINSULA

2016 ◽  
pp. 25-29
Author(s):  
I. V. Kislukhin ◽  
V. I. Kislukhin
Keyword(s):  
Sedimentary Cover ◽  
Yamal Peninsula ◽  
Geologic Structure ◽  
Petroleum Potential ◽  
North East ◽  
The North ◽  
Barrier Type ◽  
The Yamal Peninsula

In the article the geologic structure of the Jurassic and Neocomian age sedimentary cover in the Yamal Peninsula is considered. The regional unconformities of the north-east strike where the traps of barrier type are formed and the petroleum potential of which has been proved in Novoportovskoye, Rostovtelecoye and in a number of other fields have been mapped.

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