COMPUTER MODELING OF THE SAND BODIES DEPOSITIONAL HISTORY OF THE MIDDLE JURASSIC PETROLEUM PLAY (BY THE EXAMPLE OF THE GERASIMOVSKOE FIELD, WESTERN SIBERIA)

The present paper describes the DIONISOS software package (Beicip-Technologies), where the reconstruction of the accumulation conditions and facies modeling of sand reservoirs Yu10, Yu9, Yu8, Yu7 and Yu6 of the Tyumenskaya Formation and carbonaceous-clay members acting as fluid seals within the Gerasimovskoye oil and gas condensate field located in the south of the Parabel district of the Tomsk region. Reconstructions of facies environments make it possible to consistently restore conditions and create a general principled model of the accumulation of sandy-argillaceous deposits of the Middle Jurassic PP in a given territory. Polyfacies deposits of the Bajocian are represented by sands of distributaries and stream-mouth bars, underwater slope of delta, above-water and underwater delta plains, argillaceous-carbonaceous sediments of floodplain lakes, bogs, marshes and lagoons, clays formed at the border of the above-water and underwater deltaic plains, silt deposits of above-water and underwater delta plains, prodelta clays. As a result of the 3D facies model construction, it is shown that the subcontinental sedimentary environments of sand reservoirs Yu10–Yu8 are replaced by deltaic and floodplain-lacustrine-boggy ones, and the formation of Yu7–Yu6 reservoirs occurs in conditions of coastal plain, periodically flooded by the sea. In total, 5 lithotypes of sand deposits have been identified, 1 – argillaceous-carbonaceous, 2 – argillaceous and 1 – silty. Computer facies 3D modeling of the sand bodies assemblage (hydrocarbon reservoirs) of the Bajocian age for the Gerasimovskoye oil and gas condensate field has been performed.

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TRIASSIC-JURASSIC DEPOSITIONAL HISTORY OF THE DAMPIER AND BEAGLE SUB-BASINS, NORTHWEST SHELF OF AUSTRALIA

The APPEA Journal ◽

10.1071/aj79003 ◽

1980 ◽

Vol 20 (1) ◽

pp. 25

Author(s):

A. Crostella ◽

T. Barter

Keyword(s):

Middle Jurassic ◽

Early Jurassic ◽

Late Triassic ◽

Depositional History ◽

Reservoir Rocks ◽

Potential Source ◽

Regional Tectonic ◽

History Of ◽

Extensional Faulting ◽

Coastal Sedimentation

Very large gas accumulations were discovered in the Dampier Sub-basin on the Northwest Shelf of Australia during the early 1970's. The majority of the reservoirs are fluvial and marginal marine sandstones within a thick intra-cratonic clastic sequence of Early Triassic to Middle Jurassic age. Parts of this succession have been penetrated by more than 60 wells within the Dampier Sub-basin and the adjacent Beagle and Barrow Sub-basins.Broad regional palaeoenvironmental episodes have been established using oriented core supplemented by seismic, palaeontologic and wireline log data. The earliest episode was an Early to Middle Triassic transgressive-regressive cycle which led to marine and marginal marine deposition, followed during the Middle to Late Triassic by dominantly fluvial deposition. A transgression began in the early Rhaetian, characterised by deltaic, estuarine, lagoonal and coastal sedimentation which gave way to fully marine conditions during the Early Jurassic (Hettangian); this was followed by a regressive cycle.A regional tectonic episode followed which resulted in development of troughs, and brought about associated extensional faulting. Marine conditions which typified the Early Jurassic (Sinemurian) persisted until the beginning of the Middle Jurassic (Bajocian) in the Dampier Sub-basin, but passed rapidly to a fluvio-deltaic cycle in the Beagle Sub-basin. Regressive conditions extended gradually westward until sedimentation was interrupted by the onset of major continental break-up toward the end of the Middle Jurassic.The deposition of an alternating sequence of thick shale and sand during mainly restricted marine and continental conditions has provided the area with potential source and reservoir rocks.

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EXPLORATION WELLS COMPLETION IN ICE CONDITIONS OF THE ARCTIC

Oil and Gas Studies ◽

10.31660/0445-0108-2016-2-61-66 ◽

2016 ◽

pp. 61-66

Author(s):

D. A. Kustyshev ◽

A. V. Kustyshev ◽

A. A. Barkov ◽

M. D. Antonov ◽

V. A. Dolgushin

Keyword(s):

Oil And Gas ◽

Gas Condensate ◽

The Arctic ◽

History Of Development ◽

Oil And Gas Resources ◽

History Of ◽

Ice Conditions

The article considers the history of development of oil and gas resources of seas and oceans, and prospects of the Arctic off-shore fields development. The analysis of the project solutions on development of the off-shore gas and gas-condensate fields in the Tyumen region north has been carried out. The technology solutions are proposed aimed on completion of prospecting wells from the ice islands at time deficit using drill rigs, as well as on completion of wells with using the preventing units.

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DEPOSITIONAL HISTORY OF THE SOUTHERN TAROOM TROUGH, QUEENSLAND

The APPEA Journal ◽

10.1071/aj94022 ◽

1995 ◽

Vol 35 (1) ◽

pp. 344

Author(s):

J.W. Beeston ◽

O. Dixon ◽

P.M. Green

Keyword(s):

Oil And Gas ◽

Oil Field ◽

Depositional History ◽

Oil And Gas Fields ◽

Depositional Settings ◽

Sediment Input ◽

History Of ◽

Complex Relationships ◽

Gas Fields ◽

Seismic Reflector

The Permian succession in the southern Taroom Trough is generally believed to be the source of hydrocarbons in the Roma Shelf oil and gas fields and the Moonie oil field. The succession is characterised by complex relationships between marine and fluvio-deltaic facies which reflect marked differences in the depositional history of the Trough.On the basis of transgressive events, the succession has been subdivided into four sedimentary cycles, the boundaries of which do not always correspond to formation boundaries or seismic horizons. Notably, the top coal in any area forms a prominent seismic reflector, but coals in individual areas can be demonstrated to occur at different stratigraphic positions relative to the major interval of coal development. These higher coals reflect changing depositional settings with time.Palaeogeographic reconstructions demonstrate a complex depositional history of sediment input onto a shallow shelf from differing directions and with different rates of input.

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New Insights into the Post-Middle Jurassic Subsidence and Depositional History of Offshore Alabama, Northeastern Gulf of Mexico, based on Backstripping Analysis : ABSTRACT

AAPG Bulletin ◽

10.1306/3b05c186-172a-11d7-8645000102c1865d ◽

1997 ◽

Vol 81 (1997) ◽

Author(s):

LI, X., and R. T. BUFFLER 

Keyword(s):

Gulf Of Mexico ◽

Middle Jurassic ◽

Depositional History ◽

History Of ◽

Northeastern Gulf Of Mexico

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Stratigraphy and Depositional History of Thousand Pockets Tongue of Page Sandstone and Crystal Creek Member of Carmel Formation (Middle Jurassic), Southwestern Utah: ABSTRACT

AAPG Bulletin ◽

10.1306/2f919841-16ce-11d7-8645000102c1865d ◽

1981 ◽

Vol 65 ◽

Author(s):

Mario V. Caputo

Keyword(s):

Middle Jurassic ◽

Depositional History ◽

History Of

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The Penguins Cluster, Blocks 211/13a and 211/14, UK North Sea

Geological Society London Memoirs ◽

10.1144/m52-2018-71 ◽

2020 ◽

Vol 52 (1) ◽

pp. 916-927 ◽

Cited By ~ 1

Author(s):

D. Thorpe ◽

M. Porter ◽

T. McKie ◽

L. J. Ritchie

Keyword(s):

North Sea ◽

Middle Jurassic ◽

Oil And Gas ◽

Upper Jurassic ◽

Gas Condensate ◽

The North ◽

Average Porosity ◽

Exploration And Production

AbstractThe Penguins Cluster of fields are owned jointly (50:50) by Shell UK Ltd (Shell) and Esso Exploration and Production UK Ltd (Esso), with Shell as the operator. The cluster was discovered in 1974 and is composed of a combination of oil and gas condensate accumulations located 50–65 km north of the Brent Field, at the northern end of the North Viking Graben. Two main producing reservoirs are present: the Penguins West Field (Penguin A) consists of an Upper Jurassic Magnus Sandstone Member reservoir, while the Penguins East Field (Penguin C, D and E) consists of a Middle Jurassic Brent Group reservoir, underlain by currently undeveloped Statfjord and Triassic (Cormorant) reservoirs. The Magnus reservoir is composed of turbidite sands with an average porosity of 15% and permeabilities of 0.10–300 mD. The Brent reservoirs are composed of deltaic shoreface deposits with an average porosity of 14% and permeabilities of 0.01–1000 mD.The fields were brought on stream in 2003 as a subsea development via what at the time was the world's longest comingled tieback to the Brent Charlie facility. A total of nine producing wells have been drilled from four subsea manifolds, producing c. 78 MMboe to date through depletion drive.

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