A holistic view on avulsion dynamics in a dryland river fan based on comprehensive geomorphological analysis

Dryland river fans form by repeated switching (avulsion) of an ephemeral stream as it progrades and accumulates sediment onto a low-gradient alluvial plain. Successive channel belts are organised in a radial pattern through a process of compensational stacking, where each consecutive river path avoids the positive relief left by its predecessors...

Dryland avulsion sequences: Insights from data-model comparison of a terminal dryland river system

An advection–diffusion model of fluvial processes was used to analyze the stratigraphic expression of avulsions in terminal river systems and understand their control on basin-fill architecture. The initial and boundary conditions of the model runs (i.e., catchment area, smoothed initial topographic surface, grain-size distribution and...

High resolution reservoir quality prediction from cores by multifaceted analysis: A Carboniferous example from the Dutch offshore

Integrated core analysis for quantitative reservoir-quality assessment

An evaluation of interferences in heat production from low enthalpy geothermal doublets systems

Required distance between doublet systems in low enthalpy geothermal heat exploitation is often not fully elucidated. The required distance aims to prevent negative interference influencing the utilisation efficiency of doublet systems. Currently production licence areas are often issued based on the expected extent of the reinjected cold...

On the origin of crevasse-splay amalgamation in the Huesca fluvial fan (Ebro Basin, Spain): Implications for connectivity in low net-to-gross fluvial deposits

Floodplain deposits are abundant in low-gradient dryland river systems, but their contribution to connected reservoir volumes has not yet been fully acknowledged due to their poor detectability with typical wireline log suites and relatively-lower reservoir quality. This study presents an analysis of stacked crevasse splays in the distal part of...

On the origin of crevasse-splay amalgamation in the Huesca fluvial fan (Ebro Basin, Spain): Implications for connectivity in low net-to-gross fluvial deposits

Floodplain deposits are abundant in low-gradient dryland river systems, but their contribution to connected reservoir volumes has not yet been fully acknowledged due to their poor detectability with typical wireline log suites and relatively-lower reservoir quality. This study presents an analysis of stacked crevasse splays in the distal part of...

Reservoir potential of thin-bedded sandstone in continental mudrock successions - The search for hidden treasures

The subsurface of the West European gas province contains up to several hundred meters thick continuous Upper Rotliegend and Lower Triassic mud rock sequences which have to date been labelled as nonreservoir ‘waste zone’. The mud rock formed as fluvial floodplain deposits in a semi-arid climate. The sequences contain thin-bedded porous and...

Reservoir architecture and tough gas reservoir potential of fluvial crevasse-splay deposits

Unconventional tough gas reservoirs in low-net-to-gross fluvial stratigraphic intervals may constitute a secondary source of fossil energy to prolong the gas supply in the future. To date, however, production from these thin-bedded, fine-grained reservoirs has been hampered by the economic risks associated with the uncertainties in their...

Influence of fluvial sandstone architecture on geothermal energy production

Fluvial sandstone reservoirs composed of stacked meander belts are considered as potential geothermal resources in the Netherlands. Net-to-gross, orientation and stacking pattern of the channel belts is of major importance for the connectivity between the injection and production well in such reservoirs. Understanding the influence of the...

Quantifying rock's structural fabric: A multi-scale hierarchical approach to natural fracture systems and stochastic modelling

Characterizing thin-bedded, low-N/G tough gas reservoirs through reservoir-analogue and core studies

Reservoir modelling of Lower Cretaceous West Netherland Basin aquifers for geothermal energy production

3D modelling of particle-size distributions in the shallow subsurface: Zeeland, The Netherlands

Grain size distribution of unconsolidated sediments at the terminus of a semi-arid river system and its use to reconstruct paleo-geomorphology

Reconstruction of sediment supply from mass accumulation rates in the Northern Adriatic Basin (Italy) over the past 19,000 years

Reconstruction of sediment supply is hampered by the incompleteness of the stratigraphic record. This problem may be partly circumvented by studying mass accumulation rates in closed systems, i.e., basins in which no sediment has bypassed the site of deposition over the time interval of interest. We present time-averaged basin-wide mass...

Bioavailabiltiy of Lanthanides to Freshwater Organisms: Speciation, Accumulation and Toxicity

The lanthanides consist of a group of fifteen homologous metals and together with scandium (Sc) and yttrium (Y) they are known as the rare earth elements (REE). Contrasting to what this name suggests they are not rare at all and lanthanides can be found in most soils and sediments in quantities comparable to those of Pb and Cd. However, their...