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Gómez, J.F. (author), Shoeibi Omrani, P.S. (author), Belfroid, S.P.C. (author)In gas wells, decreased/unstable production can occur due to difficult-to-predict dynamic effects resulted from late-life phenomena, such as liquid loading and flooding. To minimize the negative impact of these effects, maximize production and extend the wells’ lifetime, wells are often operated in an intermittent production regime. The goal of...conference paper 2021
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van 't Westende, J.M.C. (author), van Nimwegen, A.T. (author), Belfroid, S.P.C. (author), Slot, H.J. (author)Experiments were performed to investigate the physics behind intermittent production and liquid loading, using a setup containing a reservoir model coupled to a vertical production tubing. In the experiments both gas and liquid are injected into the reservoir, which is a container in which sand with two different permeabilities is placed. Quick...conference paper 2021
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Paap, B. (author), Kraaijpoel, D. (author), Wassing, B. (author), van Wees, J.D. (author)Numerical simulations of seismic wave propagation usually rely on a simple source modelconsisting of an idealized point location and a moment tensor. In general, this is a validapproximation when the source dimensions are small relative to the distance of points at whichthe seismic wave motions are to be evaluated. Otherwise, a more realistic...article 2020
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Hanea, R.G. (author), Bjorlykke, O.P. (author), Hashmi, Y. (author), Feng, T. (author), Fonseca, R.M. (author)In this paper we present our results, challenges and learnings, over a two-year period wherein robust multi-objective optimization was applied at the Mariner asset which is being currently developed. Many different problems were solved with different objectives. These problems were formulated based on the phases of planning and development at...conference paper 2019
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TerHeege, J.H. (author), Osinga, S. (author), Carpentier, S. (author)The properties of faults and fractures under dynamic reservoir conditions are critical in determining flow and performance of geothermal doublets in fractured reservoirs. The complexity of faults obtained from geological and seismic characterization is usually not honored in flow models for fractured reservoirs. Fault zone architectures may...conference paper 2018
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Carpentier, S.F.A. (author), Abidin, H. (author), Steeghs, P. (author), Veldkamp, J.G. (author)CO2 storage needs economic business cases through cost-effective exploration and production and needs license-to-operate through public support. Re-interpretation and reprocessing of vintage geophysical data is a means to achieve cost-effective exploration whereas de-risking and conformance control of storage operations is a means to obtain...conference paper 2018
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Feng, T. (author), Leeuwenburgh, O. (author), Hewson, C. (author), Hanea, R.G. (author)Alternating injection of water and gas (WAG) has been widely applied as an oil recovery strategy since the late 1950s. The expected benefits are improved macroscopic sweep, with the water and gas sweeping lower and upper zones of the reservoir respectively, and improved microscopic sweep due to various effects leading to lowering of the residual...conference paper 2017
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Zhang, Y. (author), Leeuwenburgh, O. (author), Carpentier, S. (author), Steeghs, P. (author)A distance parameterization of flood fronts derived from time-lapse seismic anomalies was recently developed to facilitate incorporation of time-lapse seismic data into history matching workflows based on ensemble methods such as the ensemble Kalman filter (EnKF) and the ensemble smoother (ES). A number of advantages were demonstrated on...conference paper 2017
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Carpentier, S.F.A. (author), Steeghs, T.P.H. (author), Zhang, Y. (author), Leeuwenburgh, O. (author)Recent progress in 4D seismic history matching benefits greatly from the use of 4D seismic timelapse data. Several methods for inversion of 4D seismic timelapse data for reservoir pressure and saturation have been developed with mixed success. Most of these methods work well on synthetic data or real data with low noise levels, but degrade in...conference paper 2017
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Osinga, S. (author), Wassing, B.B.T. (author), Pizzocolo, F. (author), Fokker, P.A. (author), Eijs, R.M.H.E van (author), van den Bogert, P.A.J. (author)Pressure maintenance by injection of nitrogen into a reservoir is one of the potential options to mitigate induced seismicity during gas production. It is expected that seismicity and the seismic hazard can be reduced by decreasing the stress changes and compaction associated with the declining pore pressure in the reservoir rocks. However,...conference paper 2017
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Muller, C. (author), Maldonado, A.G. (author), Varnek, A. (author), Creton, B. (author)Each oil reservoir could be characterized by a set of parameters such as temperature, pressure, oil composition, and brine salinity, etc. In the context of the chemical enhanced oil recovery (EOR), the selection of high performance surfactants is a challenging and time-consuming task since this strongly depends on the reservoir's conditions. The...article 2015
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van der Linden, R.J.P. (author), Marck, J.W. (author), de Boer, J.P. (author)Operating maturing assets poses increasingly complex challenges to operators. Meeting hourly or daily production targets becomes more difficult when wells are more often shut in for e.g. water washes (against salt deposition) or solvent jobs (at asphaltenes deposition). Declining reservoir pressure in turn results in less margin to compensate...conference paper 2015
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Hanea, R. (author), Evensen, G. (author), Hustoft, L. (author), Ek, T. (author), Chitu, A. (author), Wilschut, F. (author)Statoil is implementing "Fast Model Update (FMU)," an integrated and automated workflow for reservoir modeling and characterization. FMU connects all steps and disciplines from seismic depth conversion to prediction and reservoir management taking into account relevant reservoir uncertainty. FMU delivers an ensemble of geologically-consistent...conference paper 2015
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Fonseca, R.M. (author), Leeuwenburgh, O. (author), Rossa, E.D. (author), van den Hof, P.M.J. (author), Jansen, J.D. (author)We consider robust ensemble-based (EnOpt) multi-objective production optimization of on-off inflow control devices (ICDs) for a sector model inspired on a real-field case. The use of on-off valves as optimization variables leads to a discrete control problem. We propose a re-parameterization of such discrete controls in terms of switching times,...conference paper 2015
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Fonseca, R.M. (author), Kahrobaei, S.S. (author), van Gastel, L.J.T. (author), Leeuwenburgh, O. (author), Jansen, J.D. (author)With an increase in the number of applications of ensemble optimization (EnOpt) for production optimization, the theoretical understanding of the gradient quality has received little attention. An important factor that influences the quality of the gradient estimate is the number of samples. In this study we use principles from statistical...conference paper 2015
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ter Heege, J.H. (author), de Bruin, G. (author)The sealing capacity of faults is one of the main controlling factors determining column heights of hydrocarbons in structural traps and potentially bypassed gas in undrained reservoir compartments. Limited available data in early exploration phases often hampers full incorporation of fault seal analysis and fault zone permeability in...conference paper 2015
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Gruson, J.F. (author), Serbutoviez, S. (author), Delprat-Jannaud, F. (author), Akhurst, M. (author), Nielsen, C. (author), Dalhoff, F. (author), Bergmo, P. (author), Bos, C. (author), Volpi, V. (author), Iacobellis, S. (author)Carbon Capture and Storage (CCS) should be a key technology in order to achieve a decline in the CO2 emissions intensity of the power sector and other intensive industry, but this potential deployment could be restricted by cost issues as the International Energy Agency (IEA) in their last projections (World Energy Outlook 2013) has considered...article 2015
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ter Heege, J.H. (author), Zijp, M.H.A.A. (author), de Bruin, G. (author), ten Veen, J.H. (author)Uncertainties in upfront predictions of hydraulic fracturing and gas production of underexplored shale gas targets are important as often large potential resources are deduced based on limited available data. In this paper, uncertainties are quantified by using normal distributions of different input parameters in wellbased models for hydraulic...conference paper 2014
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Verreussel, R.M.C.H. (author), Munsterman, D.K. (author), Ten Veen, J.H. (author), van de Weerd, A. (author), Dybkjaer, K. (author), Johannessen, P.N. (author)In order to be able to predict the distribution of reservoir sands and of grainsize and porosity trends in a hydrocarbon province, it is essential to understand the basin evolution in detail. In this study, an attempt is made to reconstruct the complex basin evolution of the southern Central Graben area by careful correlation of sedimentary...conference paper 2014
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ten Veen, J.H. (author), Verreussel, R.M.C.H. (author), Ventra, D. (author), Zijp, M.H.A.A. (author)Shale gas reservoir stimulation procedures (e.g. hydraulic fracturing) require upfront prediction and planning that should be supported by a comprehensive reservoir characterization. Therefore, understanding shale depositional processes and associated vertical and lateral sedimentological variability is key in predicting the character and...conference paper 2014