Connectivity of fluvial point-bar deposits: An example from the Miocene Huesca fluvial fan, Ebro Basin, Spain

Donselaar, M.E.; Overeem, I.

doi:10.1306/04180807079

Cited by 90 publications

(56 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Where these mud-prone abandoned channel fills border genetically related sand-rich macroforms, they may act as barriers or baffles to hydrocarbon flow, and, as a result, they can compartmentalize meander-belt reservoirs ( Figure 1). The potential importance of the compartmentalization of meander-belt reservoir by mud-prone abandoned channel fills, and its important control on sand connectivity and effectiveness of primary and secondary hydrocarbon recovery, are widely recognized (Berg 1968;Busch 1974;Richardson et al 1987;Ambrose et al 1991;Jordan & Pryor 1992;Galloway & Hobday 1996;Weimer et al 1998;de Rooij et al 2002;Edie & Andrichuk 2003;Jiao et al 2005;Donselaar & Overeem 2008;Shepherd 2009;Reijenstein et al 2011;Alpak & Barton 2014;Shu et al 2015; and references therein). Yet, this problem is typically described and considered at a qualitative level.…”

Section: 1mentioning

confidence: 99%

“…In fluvial successions deposited by meandering rivers, channel-belt deposits can be conceptualized as being made of point bars that are either (i) entirely compartmentalized by mud plugs, representing the infill of abandoned channels, or (ii) connected through base-ofchannel thalweg sands or gravels, in a so-called string-of-beads fashion (Donselaar & Overeem 2008). Thus, fluvial successions with string-of-beads architecture will display higher static connectivity, for a given value of net-to-gross ratio (Donselaar & Overeem 2008).These are just idealized end-member scenarios: in reality it is plausible that channel belts might display both behaviours, i.e., may contain bars that are isolated, and bars that are connected to others by base-of-channel reservoir-quality deposits.…”

Section: Assessment Of Compartmentalization Stylementioning

confidence: 99%

“…Thus, fluvial successions with string-of-beads architecture will display higher static connectivity, for a given value of net-to-gross ratio (Donselaar & Overeem 2008).These are just idealized end-member scenarios: in reality it is plausible that channel belts might display both behaviours, i.e., may contain bars that are isolated, and bars that are connected to others by base-of-channel reservoir-quality deposits. FAKTS data are used to test the relative prevalence of these two end-member models of meander-belt architecture.…”

Section: Assessment Of Compartmentalization Stylementioning

confidence: 99%

See 2 more Smart Citations

Geometry and compartmentalization of fluvial meander-belt reservoirs at the bar-form scale: Quantitative insight from outcrop, modern and subsurface analogues

Colombera

Mountney

Russell

et al. 2017

Marine and Petroleum Geology

View full text Add to dashboard Cite

The preserved deposits of fluvial meander belts typically take the form of patchworks of sand-prone bar-form elements bordered by genetically related, muddy channel fills. In meander belts that act as hydrocarbon reservoirs, characteristics of sedimentary architecture, including the geometry of point-bar elements and the internal compartmentalization exerted by the presence of mud-prone abandoned channel fills, control the effectiveness of primary and enhanced hydrocarbon recovery. Therefore, a quantitative description of meander-belt architectures is desired to provide constraints to subsurface predictions.To this end, an examination of sedimentological datasets, enabled by database-assisted analysis, is undertaken. Sixty-four database case studies of modern, ancient outcropping and subsurface fluvial depositional systems are characterized in a quantitative manner, to assess the relative importance of different styles of lithological compartmentalization, and to provide constraints that can be applied to inform predictions of the geometry and connectivity of bar-scale sandbodies in meander-belt reservoirs. The results of this study include: (i) a set of empirical relationships that relate dimensional parameters describing the geometry of point-bar elements, associated channel fills, channel complexes and potentially unswept compartments; (ii) probabilistic descriptions that relate well density to both the proportion of compartments intersected by a well array, and the maximum volume of untapped bar-form compartments.The resulting predictive tools can be applied to assist reservoir development and production, either directly or through incorporation into reservoir models. For example, it is shown how to use these quantitative constraints to predict the likely volume of point-bar reservoir compartments with potential bypassed hydrocarbons, and to optimize drilling strategies (e.g., whether and how to perform infill drilling or horizontal drilling), by providing a measure of the likely presence, size, spacing, and orientation of bypassed hydrocarbon volumes.

show abstract

Section: 1mentioning

confidence: 99%

Section: Assessment Of Compartmentalization Stylementioning

confidence: 99%

Section: Assessment Of Compartmentalization Stylementioning

confidence: 99%

See 1 more Smart Citation

Geometry and compartmentalization of fluvial meander-belt reservoirs at the bar-form scale: Quantitative insight from outcrop, modern and subsurface analogues

Colombera

Mountney

Russell

et al. 2017

Marine and Petroleum Geology

View full text Add to dashboard Cite

show abstract

“…9, No. 3;2017 monosandbody (Fu et al, 2003;Labourdette & Jones, 2007;Donselaar & Overeem, 2008). Many methods have been proposed to extract parameters (MacDonald & Halland, 1993;Lyu, Ma, & Tian, 1994;Li, 1996;Liu, Yang, & Yang, 2004;Fabuel-Perez, Hodgetts, & Redfern, 2009;Wu, Hou, Wang, Cui, & Shuqing., 2014), and our research focuses on the technique for determining the obliquity of the thin interlayer superface based on the configuration of paired wells and abandoned channel surface.…”

Section: Configuration Parameter Extraction Of Lateral Accretion Thinmentioning

confidence: 99%

A Study of Architecture of Thin Interlayer within Meandering River Monosandbody of Thick-Bedded Oil Layers

Shan¹,

Lin

Chen³

et al. 2017

JGG

View full text Add to dashboard Cite

This paper investigates the reservoir architecture of thin interlayer within meandering river monosandbody in the thick-bedded oil layers. The thin interlayer within the monosandbody of the terrestrial reservoir is one of the dominant factors which form the reservoir heterogeneity of fluid motion. It is of equal importance in comparison with the rhythmic distribution of permeability, and it is also the important content of the elaborate representation of reservoirs. However, previous researches of the heterogeneity of reservoir focus mostly on the theory of distribution disparity of the permeability and neglect the influence of thin interlayer on the heterogeneity. Therefore, taking the PⅠ2 individual reservoir at the Putaohua reservoir formation in Daqing oilfield as an example, this paper analyzes the distribution, formation, and the three-dimensional construction of the internal thin interlayer of the monosandbody from a new point of view, on the basis of which a set of cycle research technique about it is put forward. With the method of configuration parameter extraction, which is most important before establishing interlayer configuration in three dimensions, this study clarifies the classification, causes of formation and the differences of distinct monosandbodies. Ultimately, four categories of thin interlayer according to the characteristics of the studied area is divided and two dominate causes for thin interlayer formation is discussed: argillaceous and arenaceous rock interlayer through deposition and interlayer in process of sedimentary diagenesis.For the convenience of the study, here mainly focuses on the thick -thin interlayer. Techniques are taken the use of determining the obliquity of the thin interlayer superface based on the configuration of paired wells and abandoned channel surface. The causes for thin interlayer and their classification, distribution and the three-dimensional construction are entirely revealed, which would possess important geologic meaning for taking affective engineering measures in the aspects of the elaborate representation of oil reservoir, and the research of remaining oil formation and distribution.

show abstract

“…Factors that influence the connectivity of channelized fluvial sandbodies include: (1) the NTG ratio; (2) the width and thickness of the sandbodies; (3) plan-view geometry of the sandbodies, which is typically considered in terms of sinuosity and range of sandbody orientations; (4) the organization of sandbody stacking; and (5) the sandstone content of crevasse-splay and other non-channelized floodplain deposits (Allen 1978;Leeder 1978;Bridge & Leeder 1979;Allard & HERESIM Group 1993;Jones et al 1995;North 1996;Ainsworth 2005;Larue & Hovadik 2006;Donselaar & Overeem 2008;Pranter & Sommer 2011;Pranter et al 2014). Reservoir modelling studies have typically assumed a combination of deterministic stratigraphic layering (e.g.…”

Section: Introductionmentioning

confidence: 99%

Object-based modelling of avulsion-generated sandbody distributions and connectivity in a fluvial reservoir analogue of low to moderate net-to-gross ratio

Villamizar

Hampson

Flood

et al. 2015

View full text Add to dashboard Cite

Data from a large-scale outcrop analogue (Upper Cretaceous Blackhawk Formation, Wasatch Plateau, central Utah, USA) were used to construct three-dimensional, object-based reservoir models of low to moderate net-to-gross (NTG) ratios (11-32%). Two descriptive spatial statistical measures, lacunarity and Ripley's K function, were used to characterize sandbody distribution patterns in the different models. Lacunarity is sensitive to sandbody abundance and NTG ratio, while Ripley's K function identifies clustered, random and regular spacing of sandbodies. The object-based modelling algorithm reproduces sandbody dimensions and abundances, but patterns of sandbody distribution generated by river avulsion are poorly replicated because pseudo-well spacing provides only limited constraint on sandbody positions.In common with previous studies, the connected sand fraction in the reservoir models increases with increasing NTG ratio and increasing range of sandbody orientations, but there is significant stochastic variation around both of these trends. In addition, low NTG reservoir models in which sandbodies exhibit strong clustering may also have a low connected sand fraction across the model volume because the sandbody clusters are widely spaced and, thus, tend to be isolated from each other. Consequently, connected sand fraction could be overestimated if avulsion-generated sandbody clusters are not identified and replicated in models of such reservoirs. Research article petgeo2015-004r esearch-articleResearch article10.1144/petgeo2015-004Object-based modelling of avulsion-generated sandbody distributions and connectivity in a fluvial reservoir analogue of low to moderate net-to-gross ratioCarlos

show abstract

Connectivity of fluvial point-bar deposits: An example from the Miocene Huesca fluvial fan, Ebro Basin, Spain

Cited by 90 publications

References 23 publications

Geometry and compartmentalization of fluvial meander-belt reservoirs at the bar-form scale: Quantitative insight from outcrop, modern and subsurface analogues

Geometry and compartmentalization of fluvial meander-belt reservoirs at the bar-form scale: Quantitative insight from outcrop, modern and subsurface analogues

A Study of Architecture of Thin Interlayer within Meandering River Monosandbody of Thick-Bedded Oil Layers

Object-based modelling of avulsion-generated sandbody distributions and connectivity in a fluvial reservoir analogue of low to moderate net-to-gross ratio

Contact Info

Product

Resources

About