Prediction of hydrocarbon recovery from turbidite sandstones with linked-debrite facies: Numerical flow-simulation studies

Amy, Lawrence; Peachey, Simon; Gardiner, Andrew; Talling, Peter J.

doi:10.1016/j.marpetgeo.2009.02.017

Cited by 26 publications

(20 citation statements)

References 19 publications

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“…Their presence tends to have a negative effect on reservoir volume and quality, due to the clay-rich texture of the H3 divisions which act as baffles to flow (Amy et al, 2009) Rapid lateral facies variability increases well correlation uncertainty at bed level as even wells only a few hundred metres apart could have beds with very different bed characteristics in core, and/or wireline signatures. Accordingly, three guidelines for well correlation in hybrid-dominated lobes are proposed: i) M A N U S C R I P T…”

Section: Implications For Reservoir Performancementioning

confidence: 99%

Short length-scale variability of hybrid event beds and its applied significance

Fonnesu

Haughton

Felletti

et al. 2015

Marine and Petroleum Geology

107

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Please cite this article as: Fonnesu, M., Haughton, P., Felletti, F., McCaffrey, W., Short length-scale variability of hybrid event beds and its applied significance, Marine and Petroleum Geology (2015), doi: 10.1016/j.marpetgeo.2015.03.028. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Section: Implications For Reservoir Performancementioning

confidence: 99%

Short length-scale variability of hybrid event beds and its applied significance

Fonnesu

Haughton

Felletti

et al. 2015

Marine and Petroleum Geology

107

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“…In the subsurface, the cohesive flow component of hybrid beds could form low permeability layers that might hinder hydrocarbon fluid flow in otherwise sand-prone successions, depending on their stratigraphic distribution (Amy, 2009). However, terrestrially derived organic material has been shown to provide important source material in certain deep-water hydrocarbon reservoirs (Saller et al, 2006) and therefore organic-prone hybrid facies may be economically beneficial in some systems.…”

Section: What Is the Lateral Variability And Dimension Of Hybrid Beds?mentioning

confidence: 99%

Distribution and origin of hybrid beds in sand-rich submarine fans of the Tanqua depocentre, Karoo Basin, South Africa

Hodgson

2009

Marine and Petroleum Geology

176

268

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“…Such hybrid or linked turbidite-debrite beds were described previously (e.g., Wood and Smith, 1958;Middleton, 1979, 1980;RicciLucchi and Valmori, 1980;Zeng et al, 1991), but only recently has it become apparent that they are common in many locations worldwide (Haughton et al, 2003(Haughton et al, , 2009Sylvester and Lowe, 2004;Talling et al, 2004Talling et al, , 2007cTalling et al, , 2010Amy and Talling, 2006;Ito, 2008;Zeng et al, 1991;Amy et al, 2009;Hodgson, 2009;Jackson et al, 2009;Pyles and Jennette, 2009;Muzzi Magalhaes and Tinterri, 2010). Understanding these hybrid fl ows is important because they are a common feature of the most important processes for delivering sediment to the deep ocean.…”

Section: Introductionmentioning

confidence: 79%

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et al. 2012

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The Miocene Marnoso-arenacea Formation (Italy) is the only ancient sequence where deposits of individual submarine density fl ow deposits have been mapped in detail for long (>100 km) distances, thereby providing unique information on how such fl ows evolve. These beds were deposited by large and infrequent fl ows in a low-relief basin plain. An almost complete lack of bed amalgamation aids bed correlation, and resembles some modern abyssal plains, but contrasts with ubiquitous bed amalgamation seen in fan-lobe deposits worldwide. Despite the subdued topography of this basin plain, the beds have a complicated character. Previous work showed that a single fl ow can commonly comprise both turbidity current and cohesive mud-rich debris fl ows. The debris fl ows were highly mobile on low gradients, but their deposits are absent in outcrops nearest to source. Similar hybrid beds have been documented in numerous distal fan deposits worldwide, and they represent an important process for delivering sediment into the deep ocean. It is therefore important to understand their origin and fl ow dynamics. To account for the absence of debrites in proximal Marnoso-arenacea Formation outcrops, it was proposed that debris fl ows originated within the study area due to erosion of mud-rich seafl oor; we show that this is incorrect. Clast and matrix composition show that sediment within the cohesive debris fl ows originated outside the study area. Previous work showed that intermediate and low strength debris fl ows produced different downfl ow-trending facies tracts. Here, we show that intermediate strength debris fl ows entered the study area as debris fl ows, while low strength (clast poor) debris fl ows most likely formed through local transformation from an initially turbulent mud-rich suspension. New fi eld data document debrite planform shape across the basin plain. Predicting this shape is important for subsurface oil and gas reservoirs.Low strength and intermediate strength debrites have substantially different planform shapes. However, the shape of each type of debrite is consistent. Low strength debrites occur in two tongues at the margins of the outcrop area, while intermediate strength debrite forms a single tongue near the basin center. Intermediate strength debrites are underlain by a thin layer of structure less clean sandstone that may have settled out from the debris fl ow at a late stage, as seen in laboratory experiments, or been deposited by a forerunning turbidity current that is closely linked to the debris fl ow. Low strength debrites can infi ll relief created by underlying dune crests, suggesting gentle emplacement. Dewatering of basal clean sand did not cause a long runout of debris fl ows in this location. Hybrid beds are common in a much thicker stratigraphic interval than was studied previously, and the same two types of debrite occur there. Hybrid fl ows transported large volumes (as much as 10 km 3 per fl ow) of sediment into this basin plain, over a prolonged period of time.

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Prediction of hydrocarbon recovery from turbidite sandstones with linked-debrite facies: Numerical flow-simulation studies

Cited by 26 publications

References 19 publications

Short length-scale variability of hybrid event beds and its applied significance

Short length-scale variability of hybrid event beds and its applied significance

Distribution and origin of hybrid beds in sand-rich submarine fans of the Tanqua depocentre, Karoo Basin, South Africa

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