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 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...

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...

Entrapment of arsenic-contaminated groundwater in point bars: Case study of Holocene Ganges River deposits, Bihar, India (abstract)

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

The spatial distribution of arsenic contamination in fluvial sediment of the Ganges River: Case study from Bihar, India

Shallow aquifers in the Ganges River channel belt (Bihar, India) have high and spatially variable concentrations of arsenic contamination. The arsenic is of geogenic origin. Hydrated iron-arsenic-oxide coatings on quartz and clay minerals occur in the Ganges River deposits. The arsenic is subsequently released to the groundwater in a...

Identification and evaluation of CCS sweet spots in the West Netherlands Basin

Carbon Capture and Sequestration (CCS) is expected to become a serious CO2-emission reduction technology in the Netherlands, for example in the mature West Netherlands Basin (WNB). This study aims to identify and evaluate potential CO2-storage reservoirs based on geological boundary conditions. These criteria are applied to a basin-scale...

Point bars as stratigraphic traps for arsenic contamination in groundwater: Case study of the Ganges River, Bihar, India (abstract)

Arsenic-contaminated groundwater causes a wide-spread, serious health risk affecting millions of people worldwide. Focus of the research is the floodplain of the Ganges River in the State of Bihar (India) where groundwater is the principal source of drinking water and irrigation, and where the levels of arsenic exceed the World Health...

Identification and evaluation of CCS sweet spots in the West Netherlands Basin

Interaction between aeolian and rivers in a dryland fluvial system with remote sensing techniques

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

Comparing different shallow geophysical methods in a tidal estuary, Verdronken Land van Saeftinge, Western Scheldt, the Netherlands

In order to validate existing models of sedimentation in active sedimentary environments, detailed stratigraphic information is indispensable. Near-surface geophysical methods provide a means to acquire high-resolution images of the stratigraphic succession in the shallow subsurface. Land-based and marine methods have been tested in the...

Facies architecture of heterolithic tidal deposits: The Holocene Holland Tidal Basin

The size, shape and spatial position of lithofacies types (or facies architecture) in a tidal estuarine basin are complex and therefore difficult to model. The tidal currents in the basin concentrate sand-sized sediment in a branching pattern of tidal channels and fringing tidal flats. Away from the sandy tidal flats the sediment gradually...

Reservoir modelling of heterolithic tidal deposits: Sensitivity analysis of an object-based stochastic model

Object-based stochastic modelling techniques are routinely employed to generate multiple realisations of the spatial distribution of sediment properties in settings where data density is insufficient to construct a unique deterministic facies architecture model. Challenge is to limit the wide range of possible outcomes of the stochastic model....

Barier island coasts and relative sea level rise: Preservation potential, facies architecture and sequence analysis