Sedimentology and reservoir modelling of the Ormen Lange field, mid Norway

Smith, R. D. A.; Möller, Nicola Kerstin

doi:10.1016/j.marpetgeo.2003.03.004

Cited by 33 publications

(21 citation statements)

References 24 publications

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“…Nevertheless, codes that include explicit accounts of bedforms and facies are starting to be used not only in research but also in practical applications (e.g. Smith &Moller 2003;Liwanag 2005).…”

Section: T H E P R E S E N T -D a Y S A N D S T O N E S E Q U E N C Ementioning

confidence: 99%

Towards prediction of saturated-zone pollutant movement in groundwaters in fractured permeable-matrix aquifers: the case of the UK Permo-Triassic sandstones

Tellam

Barker

2006

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Abstract:The UK on-shore Permo-Triassic sandstones are fluvial and aeolian red beds showing a nested cyclic architecture on scales from millimetres to 100s of metres. They are typical of many continental sandstone sequences throughout the world. Groundwater flows through both matrix and fractures, with natural flow rates generally of less than 200 m year -1. At less than 30 m horizontal distances, below important minimum representative volumes for both matrix and fracture network permeability, breakthroughs are likely to be multimodal, especially close to wells, with proportionately large apparent dispersivities. 'Antifractures' -discontinuities with permeability much less than that of the host rockmay have a dominating effect. Where present, low-permeability matrix (e.g. mudstones) will significantly affect vertical flow, but will rarely prevent eventual breakthrough. Quantitative prediction of breakthrough is associated with large uncertainty. At scales of 30 to a few 100s of metres, multimodal breakthroughs from a single source become less common, although very rapid fracture flow has been recorded. At distances of hundreds of metres to a few kilometres, there is evidence that breakthroughs are unimodal, and may be more immediately amenable to quantitative prediction, even in some cases for reacting solutes. At this and greater scales, regional fault structures (both slip surfaces and granulation seams) can have major effects on sub-horizontal solute movement, and mudstones and cemented units will discourage vertical penetration. The aquifer has limited oxidizing capacity despite the almost ubiquitous presence of oxides, limited reductive capacity and limited organic sorption capacity. It has a moderate cation-exchange capacity, and frequently contains carbonate. Mn oxides are important for sorption and oxidation, but are present in limited quantity. Relationships between hydraulic and chemical properties are largely unknown. 'Hard' evidence for the solute transport conceptual model presented above is relatively limited. To be able to predict to a reasonably estimated degree of uncertainty requires knowledge of: the geological, and thence the hydraulic and geo-chemical, structure of the complex sandstone architecture (including the correlations between these properties); the development of suitable investigation techniques (especially geophysical) for mapping the structures; and the development of modelling tools incorporating matrix, fractures, 'antimatrix' and antifracture elements, each with associated hydraulic and possibly geochemical properties. In common with solute movement studies in most aquifer types, much more geological characterization needs to be undertaken. Although new investigation and modelling tools are being developed specifically for (shallow) hydrogeological applications with some considerable success, much greater advantage could be taken of importing techniques from other disciplines, and in particular from oil exploration and development.

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Section: T H E P R E S E N T -D a Y S A N D S T O N E S E Q U E N C Ementioning

confidence: 99%

Towards prediction of saturated-zone pollutant movement in groundwaters in fractured permeable-matrix aquifers: the case of the UK Permo-Triassic sandstones

Tellam

Barker

2006

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“…can be populated. It can be described as a fundamental model honoring all available Bhard^data, such as seismic information and lithofacies in wells, as well as Bsoft^data derived from global knowledge of stratigraphic architectures (Smith and Møllern 2003).…”

Section: Structural Modelingmentioning

confidence: 99%

Geostatistical modeling for fine reservoir description of Wei2 block of Weicheng oilfield, Dongpu depression, China

et al. 2015

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The Wei2 block of Weicheng oilfield is characterized by complicated structure mainly caused by high degree of fault development. Multiple reservoir types are found in this block and the reservoir heterogeneity is severe. The oil and gas reservoirs have already stepped into the stagnant stage of a great water-cut degree together with a rapid production decline rate. Thereby, both stabilizing the oil and gas production and optimizing adjustment for further exploitation make it urgent for geomodelers to build a useful model to predict the inter-well parameters and the distribution of the remaining oil and gas. A three-dimensional geological model established with the help of stochastic modeling technique may provide a perfect window and carrier for fine structure interpretation and reservoir heterogeneity description, compared with a traditional two-dimensional model. Hence, based on stratigraphical layering points, significant surfaces and fault points as well seismic interpretation, an integrated structure model is developed. Using the truncated Gaussian simulation and taking the existing geological maps as references, the sedimentary microfacies model was successfully constructed. Through the use of sequential Gaussian simulation method and the facies-controlled modeling method, the reservoir physical properties are populated. Meanwhile, the comparison between facies-controlled and non-facies-controlled property models indicates that the former is more loyal to previous researching and the representation of heterogeneity is ideal. Finally, the ideas of sample density and reserves fitting are proposed to evaluate the practicability and accuracy of the property models.

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“…Significant effort has been focused upon understanding their architecture and internal sandstone body geometries in order to facilitate reservoirscale facies modelling (see recent examples in Wonham et al, 2000;Cunha et al, 2001;Purvis et al, 2002;Smith and Moller, 2003;Conybeare et al, 2004;Satur et al, 2005). Sedimentological heterogeneities that affect hydrocarbon production can occur at a scale that is both sub-seismic (Slatt and Weimer, 1999;Coleman and Sheppard, 2000;de Araujo Simoes-Filho and Queiroz de Castro, 2001) and less than the typical development well spacing (Hurst et al, 1999).…”

Section: Reservoir Models Turbidite Systems and Outcrop Analoguesmentioning

confidence: 99%

“…Most models incorporate a subdivision using the deterministic reconstruction of laterally extensive surfaces, picked from seismic data or interpolated from wells (Stephen et al, 2002;Smith and Moller, 2003;Conybeare et al, 2004). Smaller heterogeneity scales are incorporated stochastically in the facies models.…”

Section: Facies Modelsmentioning

confidence: 99%

“…Smaller heterogeneity scales are incorporated stochastically in the facies models. This is usually achieved by means of object-based (Purvis et al, 2002;Stephen et al, 2002;Smith and Moller, 2003;Hauge et al, 2003;Conybeare et al, 2004;Larue and Friedmann, 2005;Satur et al, 2005) or pixel-based methods (Wonham et al, 2000;Felletti, 2004;Strebelle et al, 2002). More detailed variability caused by the presence of laminae, clasts, etc.…”

Section: Facies Modelsmentioning

confidence: 99%

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Hierarchical geocellular facies modelling of a turbidite reservoir analogue from the Eocene of the Ainsa basin, NE Spain

Falivene

Arbués

Howell

et al. 2006

Marine and Petroleum Geology

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Sedimentology and reservoir modelling of the Ormen Lange field, mid Norway

Cited by 33 publications

References 24 publications

Towards prediction of saturated-zone pollutant movement in groundwaters in fractured permeable-matrix aquifers: the case of the UK Permo-Triassic sandstones

Towards prediction of saturated-zone pollutant movement in groundwaters in fractured permeable-matrix aquifers: the case of the UK Permo-Triassic sandstones

Geostatistical modeling for fine reservoir description of Wei2 block of Weicheng oilfield, Dongpu depression, China

Hierarchical geocellular facies modelling of a turbidite reservoir analogue from the Eocene of the Ainsa basin, NE Spain

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