Subsurface and outcrop characterization of large tidally influenced point bars of the Cretaceous McMurray Formation (Alberta, Canada)

Musial, Geoffray; Reynaud, Jean‐Yves; Gingras, Murray K.; Féniès, Hugues; Labourdette, Richard; Parize, Olivier

doi:10.1016/j.sedgeo.2011.04.020

Cited by 162 publications

(141 citation statements)

References 26 publications

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“…point bars. Musial et al (2011) describe a meander loop width ranging between 4 and 8 km, with a point bar thickness of 30 m. The point bars of the Scalby Fm. are much smaller: their width is estimated between 500 m and 1 km and their thicknesses are less than 10 m. Consequently, the size of the heterogeneities is overall greater in the Mc Murray point bar deposits than in the Scalby Fm.…”

Section: Analogy With Subsurface MC Murray Formationmentioning

confidence: 99%

Analysis of Heavy Oil Recovery by Thermal EOR in a Meander Belt: From Geological to Reservoir Modeling

Deschamps

Guy²,

Preux³

et al. 2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Section: Analogy With Subsurface MC Murray Formationmentioning

confidence: 99%

Analysis of Heavy Oil Recovery by Thermal EOR in a Meander Belt: From Geological to Reservoir Modeling

Deschamps

Guy²,

Preux³

et al. 2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…The incised valley model (Hein et al 2001;Hein and Langenberg 2003;AEUB 2003) interprets the existence of tens-of-metres thick sand trends as accumulations that filled deeply incised channels formed as response to several or more 20-50 m sea-level falls followed by rapid rises. Alternatively, the parasequence model (Ranger andGingras 2001, 2006;Musial et al 2012) interprets the middle and upper McMurray strata as a succession of parasequences that prograded northward across a relatively stable, low-relief coastal plain with only relatively minor fluctuations in the overall rising sea level. These models also differ on the existence or non-existence of a major stratigraphic boundary between the middle and upper McMurray intervals.…”

Section: Introductionmentioning

confidence: 99%

Syndepositional architecture of the northern Athabasca Oil Sands Deposit, northeastern Alberta

Broughton

2015

Can. J. Earth Sci.

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Salt dissolution collapse-subsidence is proposed as the dominant tectono-stratigraphic control on the deposition of major sand trends across the northern Athabasca Oil Sands Deposit. Salt removal along linear dissolution trends 200 m below in the Prairie Evaporite (Middle Devonian) halite beds resulted in the collapse of the overlying Upper Devonian strata. The collapse-induced differential subsidence of the fault blocks formed the floor underlying the McMurray deposits in the 50 km long V-shaped Bitumount Trough extending across the northern area of the Athabasca Oil Sands Deposit. The lower and middle-upper McMurray sand trends filled the accommodation created by collapses of a linear chain of Upper Devonian fault blocks along the northern margin of the western Trough. A pair of tens-of-metres thick and 20-30 km long sand trends developed parallel in overlying accumulations of the lower and middle-upper McMurray Formation (Aptian). This half-graben tilted northward as the dissolution trend in the underlying Prairie Evaporite salt scarp widened, and the scarp margin was deeply embayed. Salt dissolution-induced structures were the principal control that located the large sand complexes exploited by bitumen mining projects. Earlier models of McMurray architecture interpreted the underlying karst collapse to have been largely pre-Cretaceous. This new architectural model reinterprets the spatiotemporal balance between erosion at the pre-Cretaceous surface and within the buried salt beds. Extensive salt removal resulted in collapse of the underlying hypogene karst during the late Aptian age. This resulted in the over-thickened multi-kilometres long McMurray sand trends. The underlying karst collapse resulted in unstable deposition surfaces along the sub-Cretaceous trough floors. This tectono-stratigraphic architecture, called the syndepositional model in this study, is proposed as an alternative to two other models, one of which proposes that deeply incised channel valleys and fills resulted from multiple significant sea-level fluctuations, while the other proposes that stacked parasequences accumulated along overlying shallow channels that meandered across a stable fluvio-estuarine coast.Résumé : La dissolution de sel causant la subsidence / l'effondrement est proposée en tant que le contrôle tectonique / stratigraphique dominant de la tendance de la déposition du sable à travers le secteur nord du gisement des sables bitumineux de l'Athabasca. Le retrait du sel le long de tendances de dissolution linéaires à 200 m plus bas dans les lits de halite Prairie Evaporite (Dévonien moyen) a causé l'effondrement des strates du Dévonien supérieur qui se trouvaient au-dessus. La subsidence différentielle, engendrée par l'effondrement de blocs de faille, a formé le plancher sous les gisements McMurray dans la fosse Bitmount, laquelle a une longueur de 50 km et une forme en V. Cette fosse s'étend à travers le secteur nord du gisement de sables bitumineux de l'Athabasca. Les tendances de sable inférieures et moyennes-supérieures...

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“…The evaluation of a reservoir seepage field should not only reflect the characteristics of water flooding percolation in various stages but also take into account the evaluations of the history and present situation (Musial et al 2012). The main idea of this study is to consider the historical reservoir evaluation index, determine the ineffective water circulation area, the non-producing reserves area, high flow and low flow strength area; considering the present reservoir evaluation index to determine the critical flow velocity.…”

Section: Study On Evaluation Methods Of Reservoir Seepage Field In Higmentioning

confidence: 99%

Study on evaluation and reconstruction of reservoir seepage field in high water cut stage based on analysis of seepage characteristics

Guo¹,

Meng²

2018

J Petrol Explor Prod Technol

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Aiming at the problem of a reservoir in the high water cut stage, and specifically an understanding of the distribution of the residual oil, the existing evaluation methods cannot effectively reflect the flow and distribution of the underground fluid. In this contribution, the seepage field is divided into six sections based on the evaluation of the seepage characteristics of the high water content in the reservoir. The seepage field evolution processes were studied respectively from the different well patterns and the reservoir heterogeneity, and a corresponding seepage field reconstruction method is proposed based on the flow field equilibrium. The results show that the seepage field partition can well reflect the characteristics of the different development stages of reservoir seepage. The seepage field evaluation and reconstruction method is applied to the Nm3-4-1 layer of Gang Dong oilfield, where the water content decreased by 3.8%, and the variation coefficient of the seepage field decreased by 0.33. The evaluation method is of great significance for the exploitation of the remaining oil in high water cut reservoirs.

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Subsurface and outcrop characterization of large tidally influenced point bars of the Cretaceous McMurray Formation (Alberta, Canada)

Cited by 162 publications

References 26 publications

Analysis of Heavy Oil Recovery by Thermal EOR in a Meander Belt: From Geological to Reservoir Modeling

Analysis of Heavy Oil Recovery by Thermal EOR in a Meander Belt: From Geological to Reservoir Modeling

Syndepositional architecture of the northern Athabasca Oil Sands Deposit, northeastern Alberta

Study on evaluation and reconstruction of reservoir seepage field in high water cut stage based on analysis of seepage characteristics

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