A5083792330- Digital Humanities and Scholarship
- Enhanced Oil Recovery Techniques
- Semantic Web and Ontologies
- Hydraulic Fracturing and Reservoir Analysis
- Geographic Information Systems Studies
- CO2 Sequestration and Geologic Interactions
- Hydrocarbon exploration and reservoir analysis
- Natural Language Processing Techniques
- Image Processing and 3D Reconstruction
- Data Visualization and Analytics
- 3D Modeling in Geospatial Applications
- Data Management and Algorithms
- 3D Surveying and Cultural Heritage
- Artificial Intelligence in Games
- Digital and Traditional Archives Management
- Language, Metaphor, and Cognition
- Seismic Imaging and Inversion Techniques
- Library Science and Information Systems
- Web Data Mining and Analysis
- Pickering emulsions and particle stabilization
- Computer Graphics and Visualization Techniques
- Education, Healthcare and Sociology Research
- 3D Shape Modeling and Analysis
- Geotechnical and construction materials studies
- Drilling and Well Engineering
Equinor (Norway)
2025
University of Cologne
2016-2024
King's College London
2023
University of Bergen
2013-2020
University of Passau
2014-2016
Institut für Informationsverarbeitung
2016
University of Oslo
2007-2012
Aker BP (Norway)
2005
Synopsis The present Paper describes a procedure for estimating the danger of base failure in strutted excavation clay. Terzaghi and Tschebotarioff have previously given formulae such calculations, but these are limited to shallow excavations. On basis familiar bearing capacity calculations foundations on clay new approach problem is developed, which critical depth an by: where s y undrained shear strength density clay, respectively. N c dimensionless coefficient depending form excavation,...
Abstract The poor rock quality and matrix permeability several orders of magnitude lower than conventional oil reservoirs observed in unconventional liquid (ULR) presents many uncertainties on the storage capacity possibility enhancing recovery. technological advances multiple stage hydraulic fracturing horizontal drilling have improved overall profitability shale plays by – wellbore connectivity. combination these technologies has become key factor for operators to reach economically...
Abstract The development of subsurface reservoirs involves complex decision-making process. success field projects depends on the ability making good techno-economic decisions based currently available information about subsurface. Multi-million investment are made in presence uncertainties. To assist decision makers this task, Equinor and TNO have been jointly developing EVEREST™ framework – a support platform employing flexible computationally efficient model-based methodology for...
Summary This work demonstrates that diffusion may be a viable oil-recovery mechanism in fractured reservoirs during injection of carbon dioxide (CO2) for enhanced oil recovery, depending on the CO2 distribution within fracture network and distance between fractures. High recovery was observed miscible, supercritical (RF = 86% original place) laboratory with chalk core plug large permeability contrast. Dynamic 3D fluid saturations from computed-tomography (CT) imaging made it possible to...
Summary This paper presents an ongoing CO2–foam upscaling research project that aims to advance technology for accelerating and increasing oil recovery, while reducing operational costs lessening the carbon footprint left during CO2 enhanced recovery (EOR). Laboratory behavior was upscaled pilot scale in onshore carbonate reservoir Texas, USA. Important properties, such as local foam generation, bubble texture, apparent viscosity, shear–thinning with a nonionic surfactant, were evaluated...
Summary The use of nanoparticles for CO2-foam mobility is an upcoming technology carbon capture, utilization, and storage (CCUS) in mature fields. Silane-modified hydrophilic silica enhance the thermodynamic stability CO2 foam at elevated temperatures salinities presence oil. aqueous nanofluid mixes with porous media to generate enhanced oil recovery (EOR) by improving sweep efficiency, resulting reduced footprint from production geological anthropogenic CO2. Our objective was investigate...
CRMgeo is a formal ontology intended to be used as global schema for integrating spatiotemporal properties of temporal entities and persistent items. Its primary purpose provide consistent with the CIDOC CRM integrate geoinformation using conceptualizations, definitions, encoding standards topological relations defined by Open Geospatial Consortium in GeoSPARQL. To build ontology, same engineering methodology was CRM. first introduced concept Spacetime volume that subsequently included...
In this paper we focus on modelling as a creative process to gain new knowledge about material and immaterial objects by generating manipulating external representations of them. We aim at enriching the current theoretical understanding contextualising digital humanities practices within semiotic conceptualisation modelling. A approach enables us contextualise in scholarly framework well suited humanistic enquiries, forcing investigate how models function signs specific contexts production...
Foam implementation for carbon capture, utilization and storage (CCUS) can greatly improve CO2 mobility control, resulting in enhanced hydrocarbon production capacity. The use of nanoparticles (NP) to create robust foam structures has recently gained attention. Local generation coalescence dynamics be described by mathematical models. Here we address knowledge gaps NP porous media tracking the bubble density (nf) data spatially temporally using an established surfactant (SF)...
Network visualization is one of the most widely used tools in digital humanities research. The idea uncertain or “fuzzy” data also a core notion Yet network visualizations do not always prominently represent uncertainty. In this article, we present mathematical and logical model uncertainty as range values which can be visualizations. We review some principles for visualizing different kinds, visual variables that representing uncertainty, how these have been to types drawn from...
Inspired by explanations of machine learning concepts in children’s books, we developed an approach to introduce supervised, unsupervised, and reinforcement using a block-based programming language combination with the benefits educational robotics. Instead blocks as high-end APIs access AI cloud services or reproduce algorithms, use them means put student “in algorithm’s shoes.” We adapt training neural networks, Q-learning, k-means algorithms design format suitable for children equip...
The content in information systems and virtual reconstructions the cultural heritage sector is to a large degree directly based on deduced from study of texts. In many cases, even if texts are available electronically, links facts original not cases very costly re-establish. Reproducibility results core concept text-based research as all research. Thus, such should be expressed explicitly accordance with data standards developed fields text encoding conceptual modelling. To do this it...
It is still a big technical problem to establish relation between shape and its meaning in sustainable way. We present solution with markup method that allows for labeling parts of 3D object very much like hypertext. A can serve both as hyperlink link anchor, which the key bidirectional linking objects Web documents. Our focus on software infrastructure application scenarios ranging from email Internet over authoring browsing semantic networks interactive museum presentations. demonstrate...
This paper discusses the relationships between TEI and ontologies from perspective of computer-based modeling, understood here as a way to establish meaning. The distinctions creation use models well modeling for production understanding are presented compared with other categorizations or modeling. One method establishing meaning in documents is achieved via linking mechanisms external ontologies. How such can be done what it may imply semantic openness usability practical focus this article.
Computer based modelling in cultural heritage has focused on database development, generalised as data standards and, since the 1990s, also formal ontologies. Modelling digital humanities had its core textual scholarship, including close reading and text encoding of literary historical sources well models corpora, usually relying statistical methods. Integration between two paradigms been undertaken at practical level. This paper goes beyond pragmatic concerns by focusing comparing...
It is still a big technical problem to establish relation between shape and its meaning in sustainable way. We present solution with markup method that allows label parts of 3D object similar way labeling hypertext. A 3D-markup can serve both as hyperlink link anchor, which the key bi-directional linking objects web documents. Our focus on software infrastructure for application scenarios ranging from e-mail internet over authoring browsing semantic networks interactive museum...
Abstract This work experimentally investigates a two-step, integrated EOR technique for heavily fractured, oil-wet carbonate rocks by combining fracture mobility control and chase fluid injections increased sweep. The combination of using cross-linked Cr(III)-Acetate HPAM polymer gel, three different fluids (water, surfactant or CO2 foam) was investigated as an approach. Waterflood oil recovery low with poor sweep efficiency production from the volume only. Fracture conductivity...